Marcin Sieciechowicz
Country
POL
Birth Year
1992
Gender
M
Title
International Master
FIDE ID
1130170
FIDE Rating
2395
FIDE Rating Graph
Games
| # | Date | Event | Site | Round | White | Black | Result | Moves | View |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025-12-07 | Semifinals ch-POL 2025 | Poronin POL | 9.5 | Marcin Sieciechowicz | Adam Gibala | 1/2-1/2 | 41 | Open |
| 2 | 2025-12-06 | Semifinals ch-POL 2025 | Poronin POL | 8.6 | Tymon Czernek | Marcin Sieciechowicz | 1/2-1/2 | 33 | Open |
| 3 | 2025-12-05 | Semifinals ch-POL 2025 | Poronin POL | 7.4 | Marcin Sieciechowicz | Jacek Szwed | 1/2-1/2 | 74 | Open |
| 4 | 2025-12-04 | Semifinals ch-POL 2025 | Poronin POL | 6.5 | Aleksander Hnydiuk | Marcin Sieciechowicz | 1/2-1/2 | 17 | Open |
| 5 | 2025-12-03 | Semifinals ch-POL 2025 | Poronin POL | 5.11 | Marcin Sieciechowicz | Lukasz Nowak | 1-0 | 53 | Open |
| 6 | 2025-12-02 | Semifinals ch-POL 2025 | Poronin POL | 4.6 | Bartlomiej Rog | Marcin Sieciechowicz | 1/2-1/2 | 51 | Open |
| 7 | 2025-12-01 | Semifinals ch-POL 2025 | Poronin POL | 3.9 | Marcin Sieciechowicz | Patryk Mrozowski | 1-0 | 44 | Open |
| 8 | 2025-11-30 | Semifinals ch-POL 2025 | Poronin POL | 2.8 | Bruno Terkiewicz | Marcin Sieciechowicz | 1-0 | 68 | Open |
| 9 | 2025-11-29 | Semifinals ch-POL 2025 | Poronin POL | 1.8 | Marcin Sieciechowicz | Kacper Staniczek | 1-0 | 39 | Open |
| 10 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 9.4 | Marcin Sieciechowicz | Lukasz Cyborowski | 1-0 | 52 | Open |
| 11 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 8.9 | Bartlomiej Rog | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 12 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 7.17 | Marcin Sieciechowicz | Tymoteusz Hury | 1-0 | 51 | Open |
| 13 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 6.6 | Zbigniew Pakleza | Marcin Sieciechowicz | 1-0 | 44 | Open |
| 14 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 5.1 | Marcin Sieciechowicz | Jakub Liskiewicz | 1-0 | 27 | Open |
| 15 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 4.16 | Kamil Kaliszuk | Marcin Sieciechowicz | 0-1 | 72 | Open |
| 16 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 2.16 | Marcin Bartoszewicz | Marcin Sieciechowicz | 1/2-1/2 | 43 | Open |
| 17 | 2025-10-04 | ch-POL Rapid 2025 | Lublin POL | 1.17 | Marcin Sieciechowicz | Marcin Somyk | 1-0 | 53 | Open |
| 18 | 2025-09-07 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 9.1 | Marcin Sieciechowicz | Kacper Ugorek | 1-0 | 57 | Open |
| 19 | 2025-09-06 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 8.1 | Marcin Dziuba | Marcin Sieciechowicz | 1-0 | 52 | Open |
| 20 | 2025-09-05 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 7.1 | Dominik Marczuk | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 21 | 2025-09-04 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 6.1 | Marcin Sieciechowicz | Karina Cyfka | 1/2-1/2 | 27 | Open |
| 22 | 2025-09-03 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 5.1 | Jakub Suder | Marcin Sieciechowicz | 1/2-1/2 | 39 | Open |
| 23 | 2025-09-02 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 4.1 | Marcin Sieciechowicz | Tymon Czernek | 1-0 | 32 | Open |
| 24 | 2025-09-01 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 3.7 | Przemyslaw Kindler | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 25 | 2025-08-31 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 2.25 | Marcin Sieciechowicz | Oleksandr Sushchov | 1-0 | 32 | Open |
| 26 | 2025-08-30 | TCh-POL 2nd League 2025 | Jastrzebia Gora POL | 1.55 | Piotr Renkowski | Marcin Sieciechowicz | 1-0 | 49 | Open |
| 27 | 2025-08-02 | Adolf Anderssen Mem 2025 | Wroclaw POL | 8.13 | Marcin Sieciechowicz | Bartlomiej Mondrzycki | 0-1 | 30 | Open |
| 28 | 2025-08-02 | Adolf Anderssen Mem 2025 | Wroclaw POL | 7.2 | Maciej Klekowski | Marcin Sieciechowicz | 1-0 | 52 | Open |
| 29 | 2025-08-02 | Adolf Anderssen Mem 2025 | Wroclaw POL | 6.1 | Kacper Klys | Marcin Sieciechowicz | 0-1 | 56 | Open |
| 30 | 2025-08-02 | Adolf Anderssen Mem 2025 | Wroclaw POL | 5.13 | Marcin Sieciechowicz | Franciszek Borkowski | 1-0 | 29 | Open |
| 31 | 2025-08-02 | Adolf Anderssen Mem 2025 | Wroclaw POL | 4.3 | Marcin Tazbir | Marcin Sieciechowicz | 1-0 | 49 | Open |
| 32 | 2025-08-02 | Adolf Anderssen Mem 2025 | Wroclaw POL | 3.15 | Marcin Sieciechowicz | Andrzej Krzywda | 1-0 | 23 | Open |
| 33 | 2025-08-02 | Adolf Anderssen Mem 2025 | Wroclaw POL | 2.17 | Wojciech Pelczarski | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 34 | 2025-07-06 | Grand Hotel Kielce Open | Kiel GER | 9.4 | Marcin Sieciechowicz | Savitha Shri B | 1/2-1/2 | 26 | Open |
| 35 | 2025-07-05 | Grand Hotel Kielce Open | Kiel GER | 8.5 | Swara Lakshmi S Nair | Marcin Sieciechowicz | 0-1 | 57 | Open |
| 36 | 2025-07-04 | Grand Hotel Kielce Open | Kiel GER | 7.5 | Marcin Sieciechowicz | Stanislaw Mirski | 1/2-1/2 | 86 | Open |
| 37 | 2025-07-03 | Grand Hotel Kielce Open | Kiel GER | 6.9 | Bruno Terkiewicz | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 38 | 2025-07-03 | Grand Hotel Kielce Open | Kiel GER | 5.2 | Marcin Sieciechowicz | Jakub Kosakowski | 0-1 | 42 | Open |
| 39 | 2025-07-02 | Grand Hotel Kielce Open | Kiel GER | 4.1 | Marcin Sieciechowicz | Rohith S | 1/2-1/2 | 71 | Open |
| 40 | 2025-07-01 | Grand Hotel Kielce Open | Kiel GER | 3.1 | Jadranko Plenca | Marcin Sieciechowicz | 1/2-1/2 | 32 | Open |
| 41 | 2025-07-01 | Grand Hotel Kielce Open | Kiel GER | 2.5 | Marcin Sieciechowicz | Patil Priyanshu | 1-0 | 48 | Open |
| 42 | 2025-06-30 | Grand Hotel Kielce Open | Kiel GER | 1.7 | Jani Kushal R | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 43 | 2025-06-22 | ch-Malopolska 2025 | Krakow POL | 7.4 | Olaf Gradalski | Marcin Sieciechowicz | 0-1 | 64 | Open |
| 44 | 2025-06-21 | ch-Malopolska 2025 | Krakow POL | 6.7 | Marcin Sieciechowicz | Filip Wnek | 1-0 | 30 | Open |
| 45 | 2025-06-21 | ch-Malopolska 2025 | Krakow POL | 5.6 | Tetyana Skarbarchuk | Marcin Sieciechowicz | 1/2-1/2 | 46 | Open |
| 46 | 2025-06-20 | ch-Malopolska 2025 | Krakow POL | 4.5 | Marcin Sieciechowicz | Dariusz Fistek | 1/2-1/2 | 14 | Open |
| 47 | 2025-06-20 | ch-Malopolska 2025 | Krakow POL | 3.1 | Nikita Semenukha | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 48 | 2025-06-19 | ch-Malopolska 2025 | Krakow POL | 2.15 | Marcin Sieciechowicz | Jacek Orzechowski | 1-0 | 52 | Open |
| 49 | 2025-06-19 | ch-Malopolska 2025 | Krakow POL | 1.2 | Bartlomiej Cichon | Marcin Sieciechowicz | 1-0 | 51 | Open |
| 50 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 9 | Abhimanyu Mishra | Marcin Sieciechowicz | 1-0 | 37 | Open |
| 51 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 9 | Marcin Sieciechowicz | Srihari L R | 1-0 | 35 | Open |
| 52 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 8 | Saidakbar Saydaliev | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 53 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 8 | Marcin Sieciechowicz | Nikita Matinian | 1-0 | 35 | Open |
| 54 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 7 | Anatoly Krutko | Marcin Sieciechowicz | 0-1 | 53 | Open |
| 55 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 7 | Stanislav Bukreev | Marcin Sieciechowicz | 0-1 | 61 | Open |
| 56 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 6 | Marcin Sieciechowicz | David 1981 Martinez Martin | 1-0 | 39 | Open |
| 57 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 6 | Andrzej Krzywda | Marcin Sieciechowicz | 0-1 | 25 | Open |
| 58 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 5 | Adrian Jafeth Miranda Samudio | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 59 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 5 | Marcin Sieciechowicz | Alexander Moskalenko | 0-1 | 41 | Open |
| 60 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 4 | Marcin Sieciechowicz | Stanislav Kovalevsky | 1/2-1/2 | 54 | Open |
| 61 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 4 | Marcin Sieciechowicz | Horacio Pereyra | 1-0 | 50 | Open |
| 62 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 3 | Evan Rabin | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 63 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 3 | Amir Hadzovic | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 64 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 2 | Marcin Sieciechowicz | Dorsa Sadat Khalafvand | 0-1 | 52 | Open |
| 65 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 2 | Marcin Sieciechowicz | Quang Thai Ngo | 1-0 | 30 | Open |
| 66 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 1 | 790419 | Marcin Sieciechowicz | 1-0 | 27 | Open |
| 67 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 1 | Lucian Nita | Marcin Sieciechowicz | 1-0 | 36 | Open |
| 68 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 11 | Marcin Sieciechowicz | Rustam Rustamov | 1-0 | 64 | Open |
| 69 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 11 | Marko Fadi | Marcin Sieciechowicz | 0-1 | 25 | Open |
| 70 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 10 | Arystanbek Urazayev | Marcin Sieciechowicz | 1/2-1/2 | 64 | Open |
| 71 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 10 | Marcin Sieciechowicz | Milosz Szpar | 0-1 | 38 | Open |
| 72 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 8 | Tihomir Yanev | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 73 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 7 | Marcin Sieciechowicz | Lorelei Cornelisse | 1-0 | 65 | Open |
| 74 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 6 | Amir Ali Ghafourian | Marcin Sieciechowicz | 1-0 | 28 | Open |
| 75 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 5 | Marcin Sieciechowicz | Dmitry Minko | 1-0 | 79 | Open |
| 76 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 4 | Radin Yadegar | Marcin Sieciechowicz | 1-0 | 34 | Open |
| 77 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 3 | Marcin Sieciechowicz | David Paravyan | 1/2-1/2 | 25 | Open |
| 78 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 2 | Michel Liah Ferraz | Marcin Sieciechowicz | 0-1 | 66 | Open |
| 79 | 2025-06-03 | Titled Tue 3rd Jan Late | chess.com INT | 1 | Marcin Sieciechowicz | Evan S Rosenberg | 1-0 | 51 | Open |
| 80 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 9 | Mohammad Mahdi Alizadeh | Marcin Sieciechowicz | 1/2-1/2 | 83 | Open |
| 81 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 8 | Marcin Sieciechowicz | Marco Materia | 0-1 | 16 | Open |
| 82 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 7 | Austin Mei | Marcin Sieciechowicz | 0-1 | 63 | Open |
| 83 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 6 | Marcin Sieciechowicz | Tanitoluwa Adewumi | 0-1 | 32 | Open |
| 84 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 5 | Alexander Reprintsev | Marcin Sieciechowicz | 0-1 | 23 | Open |
| 85 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 4 | Marcin Sieciechowicz | Jakhongir Vakhidov | 0-1 | 46 | Open |
| 86 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 3 | Marcin Sieciechowicz | Marius Nicula | 1-0 | 35 | Open |
| 87 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 2 | Angel Nathanael Montiel | Marcin Sieciechowicz | 1/2-1/2 | 48 | Open |
| 88 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 1 | Marcin Sieciechowicz | Elnur Aliyev | 1-0 | 51 | Open |
| 89 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 11 | Pawel Dudzinski | Marcin Sieciechowicz | 0-1 | 53 | Open |
| 90 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 10 | Marcin Sieciechowicz | Vitor Hugo Vieira Ferreira | 1-0 | 62 | Open |
| 91 | 2025-05-20 | Titled Tue 20th May Late | chess.com INT | 6 | Marcin Sieciechowicz | Teoman Guney Ersoz | 0-1 | 40 | Open |
| 92 | 2025-05-20 | Titled Tue 20th May Late | chess.com INT | 5 | Jonathan Tayar | Marcin Sieciechowicz | 1/2-1/2 | 82 | Open |
| 93 | 2025-05-20 | Titled Tue 20th May Late | chess.com INT | 4 | Marcin Sieciechowicz | Antonio Naranjo Moreno | 0-1 | 34 | Open |
| 94 | 2025-05-20 | Titled Tue 20th May Late | chess.com INT | 3 | Marcin Sieciechowicz | Jeffery Xiong | 0-1 | 62 | Open |
| 95 | 2025-05-20 | Titled Tue 20th May Late | chess.com INT | 2 | Alexander Zlatin | Marcin Sieciechowicz | 0-1 | 66 | Open |
| 96 | 2025-05-20 | Titled Tue 20th May Late | chess.com INT | 1 | Marcin Sieciechowicz | Andres Iglesias Ferreira | 1-0 | 52 | Open |
| 97 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 9 | Marcin Sieciechowicz | Veronika Shubenkova | 1-0 | 40 | Open |
| 98 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 8 | Alireza Aghaei | Marcin Sieciechowicz | 0-1 | 31 | Open |
| 99 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 7 | Babageldi Annaberdiyev | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 100 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 6 | Marcin Sieciechowicz | Konstantin Popov | 0-1 | 44 | Open |
| 101 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 5 | Marcin Sieciechowicz | Levente Miszler | 1-0 | 25 | Open |
| 102 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 4 | Mahdi Gholami Orimi | Marcin Sieciechowicz | 1-0 | 55 | Open |
| 103 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 3 | Anton Demchenko | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 104 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 2 | Marcin Sieciechowicz | Parham Maghsoodloo | 1/2-1/2 | 87 | Open |
| 105 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 1 | Marcin Sieciechowicz | Jesper Kjaergaard-Jensen | 1-0 | 67 | Open |
| 106 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 11 | Marcin Sieciechowicz | Davide Cappai | 0-1 | 35 | Open |
| 107 | 2025-05-13 | Titled Tue 13th May Late | chess.com INT | 10 | Mehran Azamikia | Marcin Sieciechowicz | 1/2-1/2 | 45 | Open |
| 108 | 2025-04-15 | Titled Tue 15th Apr Late | chess.com INT | 2 | Attila Jr. Forgacs | Marcin Sieciechowicz | 1-0 | 29 | Open |
| 109 | 2025-04-15 | Titled Tue 15th Apr Late | chess.com INT | 1 | Marcin Sieciechowicz | Stanislav Kovalevsky | 0-1 | 32 | Open |
| 110 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 4 | Guillermo Di Benedetto | Marcin Sieciechowicz | 1-0 | 18 | Open |
| 111 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 3 | Marcin Sieciechowicz | Benjamin Bok | 0-1 | 34 | Open |
| 112 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 2 | Rushan Bogaudinov | Marcin Sieciechowicz | 0-1 | 67 | Open |
| 113 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 1 | Marcin Sieciechowicz | Petar Ratkovic | 1/2-1/2 | 33 | Open |
| 114 | 2025-02-04 | Titled Tue 4th Feb Late | chess.com INT | 7 | Matt Zavortink | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 115 | 2025-02-04 | Titled Tue 4th Feb Late | chess.com INT | 6 | Marcin Sieciechowicz | Sargis A. Manukyan | 0-1 | 42 | Open |
| 116 | 2025-02-04 | Titled Tue 4th Feb Late | chess.com INT | 5 | Keaton Kiewra | Marcin Sieciechowicz | 0-1 | 22 | Open |
| 117 | 2025-02-04 | Titled Tue 4th Feb Late | chess.com INT | 4 | Quang Liem Le | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 118 | 2025-02-04 | Titled Tue 4th Feb Late | chess.com INT | 3 | Marcin Sieciechowicz | Ilhan Serhat Salman | 1-0 | 18 | Open |
| 119 | 2025-02-04 | Titled Tue 4th Feb Late | chess.com INT | 2 | Dila Baloglu | Marcin Sieciechowicz | 1/2-1/2 | 32 | Open |
| 120 | 2025-02-04 | Titled Tue 4th Feb Late | chess.com INT | 1 | Marcin Sieciechowicz | Xavier Martinez Pla | 1-0 | 10 | Open |
| 121 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 9 | Pa Iniyan | Marcin Sieciechowicz | 1-0 | 30 | Open |
| 122 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 8 | Ihor Samunenkov | Marcin Sieciechowicz | 1/2-1/2 | 47 | Open |
| 123 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 7 | Marcin Sieciechowicz | Maksim Tsaruk | 1-0 | 22 | Open |
| 124 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 6 | Marcin Sieciechowicz | Kaiqi Yang | 1-0 | 41 | Open |
| 125 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 5 | Tuan Minh Le | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 126 | 2025-01-28 | Titled Tue 28th Jan Late | chess.com INT | 5 | Marcin Sieciechowicz | Nikolai Vlassov | 0-1 | 44 | Open |
| 127 | 2025-01-28 | Titled Tue 28th Jan Late | chess.com INT | 4 | Matias Jaque Gutierrez | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 128 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 4 | Alejandro Cuellar Montes | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 129 | 2025-01-28 | Titled Tue 28th Jan Late | chess.com INT | 3 | Marcin Sieciechowicz | Grigory Sharankov | 1/2-1/2 | 44 | Open |
| 130 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 3 | Marcin Sieciechowicz | Sergey Slugin | 1-0 | 23 | Open |
| 131 | 2025-01-28 | Titled Tue 28th Jan Late | chess.com INT | 2 | Ilija Stanojevic | Marcin Sieciechowicz | 1-0 | 48 | Open |
| 132 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 2 | Anna Shukhman | Marcin Sieciechowicz | 1/2-1/2 | 49 | Open |
| 133 | 2025-01-28 | Titled Tue 28th Jan Late | chess.com INT | 1 | Marcin Sieciechowicz | Max Pert | 1-0 | 52 | Open |
| 134 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 1 | Marcin Sieciechowicz | Thomas A Eggleston | 1-0 | 32 | Open |
| 135 | 2025-01-28 | Titled Tue 28th Jan Early | chess.com INT | 10 | Marcin Sieciechowicz | Asish Panda | 0-1 | 46 | Open |
| 136 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 9 | Vardan Danielian | Marcin Sieciechowicz | 1/2-1/2 | 61 | Open |
| 137 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 9 | Marcin Sieciechowicz | Fabian Platzgummer | 1-0 | 54 | Open |
| 138 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 8 | Alessio Boraso | Marcin Sieciechowicz | 0-1 | 22 | Open |
| 139 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 8 | Marcin Sieciechowicz | Vasif Durarbayli | 0-1 | 40 | Open |
| 140 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 7 | Dushyant Sharma | Marcin Sieciechowicz | 1/2-1/2 | 60 | Open |
| 141 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 7 | Marcin Sieciechowicz | Sean Senft | 1-0 | 32 | Open |
| 142 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 6 | Milosz Szpar | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 143 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 6 | Marcin Sieciechowicz | Lut Yin Luke Lau | 1-0 | 42 | Open |
| 144 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 5 | Marcin Sieciechowicz | Alexander Devaev | 0-1 | 37 | Open |
| 145 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 5 | Marcin Sieciechowicz | Sudarshan Sriniaiyer | 1-0 | 38 | Open |
| 146 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 4 | Lancelot von Naso | Marcin Sieciechowicz | 0-1 | 25 | Open |
| 147 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 4 | Dmitry Gurevich | Marcin Sieciechowicz | 0-1 | 31 | Open |
| 148 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 3 | Marcin Sieciechowicz | Trisha Kanyamarala | 1-0 | 51 | Open |
| 149 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 3 | Marcin Sieciechowicz | Daniel Ser | 0-1 | 35 | Open |
| 150 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 2 | Ronan Le Goff | Marcin Sieciechowicz | 0-1 | 65 | Open |
| 151 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 2 | Martin Christian Huber | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 152 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 1 | Marcin Sieciechowicz | Matias Mingo Fernandez | 0-1 | 33 | Open |
| 153 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 1 | Marcin Sieciechowicz | Tomasz Mika | 0-1 | 54 | Open |
| 154 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 11 | Marcin Sieciechowicz | Daniel Centron Antuna | 1-0 | 47 | Open |
| 155 | 2025-01-21 | Titled Tue 21st Jan Late | chess.com INT | 10 | Svyatoslav Korneev Leskova | Marcin Sieciechowicz | 1/2-1/2 | 86 | Open |
| 156 | 2025-01-21 | Titled Tue 21st Jan Early | chess.com INT | 10 | Kacper Ugorek | Marcin Sieciechowicz | 1-0 | 17 | Open |
| 157 | 2025-01-14 | Titled Tue 14th Jan Early | chess.com INT | 3 | Roman Goldin | Marcin Sieciechowicz | 1-0 | 16 | Open |
| 158 | 2025-01-14 | Titled Tue 14th Jan Early | chess.com INT | 2 | Marcin Sieciechowicz | Alessio Boraso | 0-1 | 30 | Open |
| 159 | 2025-01-14 | Titled Tue 14th Jan Early | chess.com INT | 1 | Ed Urquhart | Marcin Sieciechowicz | 1/2-1/2 | 54 | Open |
| 160 | 2025-01-07 | Titled Tue 7th Jan Early | chess.com INT | 6 | Marcin Sieciechowicz | Alexander Timerkhanov | 0-1 | 39 | Open |
| 161 | 2025-01-07 | Titled Tue 7th Jan Early | chess.com INT | 5 | Tuan Minh Le | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 162 | 2025-01-07 | Titled Tue 7th Jan Late | chess.com INT | 4 | Roman Mitra | Marcin Sieciechowicz | 1-0 | 70 | Open |
| 163 | 2025-01-07 | Titled Tue 7th Jan Early | chess.com INT | 4 | Marcin Sieciechowicz | Benjamin Bok | 1/2-1/2 | 43 | Open |
| 164 | 2025-01-07 | Titled Tue 7th Jan Early | chess.com INT | 3 | Savitha Shri B | Marcin Sieciechowicz | 0-1 | 35 | Open |
| 165 | 2025-01-07 | Titled Tue 7th Jan Late | chess.com INT | 3 | Marcin Sieciechowicz | Ali Mortazavi | 0-1 | 23 | Open |
| 166 | 2025-01-07 | Titled Tue 7th Jan Late | chess.com INT | 2 | Cristian Camilo Soto | Marcin Sieciechowicz | 1/2-1/2 | 39 | Open |
| 167 | 2025-01-07 | Titled Tue 7th Jan Early | chess.com INT | 2 | Kanan Hajiyev | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 168 | 2025-01-07 | Titled Tue 7th Jan Late | chess.com INT | 1 | Marcin Sieciechowicz | Giovanni Marchesich | 1-0 | 43 | Open |
| 169 | 2025-01-07 | Titled Tue 7th Jan Early | chess.com INT | 1 | Marcin Sieciechowicz | Aleksandras Jegorovas | 1-0 | 41 | Open |
| 170 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 8 | Timofey Iljin | Marcin Sieciechowicz | 1-0 | 30 | Open |
| 171 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 7 | Marcin Sieciechowicz | Nikolay Pavlov | 1-0 | 32 | Open |
| 172 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 6 | David Paravyan | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 173 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 5 | Marcin Sieciechowicz | Semen Kazmin | 1-0 | 42 | Open |
| 174 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 4 | Dravid Shailesh | Marcin Sieciechowicz | 0-1 | 56 | Open |
| 175 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 3 | Marcin Sieciechowicz | Giovanni Marchesich | 1-0 | 52 | Open |
| 176 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 2 | Mihai-Lucian Grunberg | Marcin Sieciechowicz | 1-0 | 56 | Open |
| 177 | 2024-12-17 | Titled Tue 17th Dec Early | chess.com INT | 1 | Marcin Sieciechowicz | Sultanbeibarys Dumanuly | 1-0 | 26 | Open |
| 178 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 9 | Hikaru Nakamura | Marcin Sieciechowicz | 1-0 | 50 | Open |
| 179 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 8 | Marcin Sieciechowicz | Dinesh Rajan M | 1-0 | 49 | Open |
| 180 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 7 | Vitus Bondo Medhus | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 181 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 6 | Marcin Sieciechowicz | Moritz Weishaeutel | 1/2-1/2 | 58 | Open |
| 182 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 5 | Matthias Bluebaum | Marcin Sieciechowicz | 1-0 | 29 | Open |
| 183 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 4 | Marcin Sieciechowicz | Timur Yonal | 1-0 | 38 | Open |
| 184 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 3 | Mladen Gajic | Marcin Sieciechowicz | 1/2-1/2 | 41 | Open |
| 185 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 2 | Marcin Sieciechowicz | Nikolay Pavlov | 1-0 | 58 | Open |
| 186 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 1 | David Arenas | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 187 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 11 | Thomas E Rendle | Marcin Sieciechowicz | 1/2-1/2 | 36 | Open |
| 188 | 2024-12-10 | Titled Tue 10th Dec Early | chess.com INT | 10 | Marcin Sieciechowicz | Eelke De Boer | 1-0 | 31 | Open |
| 189 | 2024-11-19 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 11.95 | Marcin Sieciechowicz | Alexandr Lauda | 1-0 | 38 | Open |
| 190 | 2024-11-18 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 10.1 | Andrej Gal | Marcin Sieciechowicz | 1/2-1/2 | 33 | Open |
| 191 | 2024-11-17 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 9.118 | Marcin Sieciechowicz | Allahverdi Hamidov | 1-0 | 28 | Open |
| 192 | 2024-11-16 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 8.103 | Nikita Rychagov | Marcin Sieciechowicz | 1-0 | 47 | Open |
| 193 | 2024-11-15 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 7.106 | Marcin Sieciechowicz | Mihailo Djokic | 1/2-1/2 | 47 | Open |
| 194 | 2024-11-13 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 6.54 | Kacper Piorun | Marcin Sieciechowicz | 1-0 | 58 | Open |
| 195 | 2024-11-12 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 5.111 | Marcin Sieciechowicz | Christian-Arrydan Tamas | 1-0 | 57 | Open |
| 196 | 2024-11-11 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 4.104 | Maksym Dubnevych | Marcin Sieciechowicz | 1/2-1/2 | 38 | Open |
| 197 | 2024-11-10 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 3.116 | Marcin Sieciechowicz | Peko Djurovic | 1/2-1/2 | 116 | Open |
| 198 | 2024-11-09 | 24th ch-EUR Indiv 2024 | Petrovac MNE | 2.51 | Vahap Sanal | Marcin Sieciechowicz | 1-0 | 57 | Open |
| 199 | 2024-10-22 | Titled Tue 22nd Oct Early | chess.com INT | 1 | Konstantin Egorov | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 200 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 9.3 | Marcin Sieciechowicz | Krzysztof Raczek | 0-1 | 76 | Open |
| 201 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 8.8 | Aleksander Kumala | Marcin Sieciechowicz | 0-1 | 49 | Open |
| 202 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 7.13 | Marcin Sieciechowicz | Jaroslaw Rogowski | 1-0 | 24 | Open |
| 203 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 6.8 | Mateusz Gorkiewicz | Marcin Sieciechowicz | 1/2-1/2 | 31 | Open |
| 204 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 5.1 | Marcin Sieciechowicz | Lukasz Cyborowski | 1/2-1/2 | 26 | Open |
| 205 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 4.13 | Marcin Pilzak | Marcin Sieciechowicz | 0-1 | 35 | Open |
| 206 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 3.15 | Marcin Sieciechowicz | Tymoteusz Hury | 1-0 | 38 | Open |
| 207 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 2.17 | Marzena Kozlowska | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 208 | 2024-10-05 | ch-POL Rapid 2024 | Lublin POL | 1.17 | Marcin Sieciechowicz | Janusz Kilanski | 1-0 | 50 | Open |
| 209 | 2024-09-22 | TCh-POL 1st League 2024 | Darlowo POL | 9.1 | Platon Galperin | Marcin Sieciechowicz | 1-0 | 39 | Open |
| 210 | 2024-09-21 | TCh-POL 1st League 2024 | Darlowo POL | 8.7 | Marcin Sieciechowicz | Karol Kucza | 1-0 | 43 | Open |
| 211 | 2024-09-20 | TCh-POL 1st League 2024 | Darlowo POL | 7.7 | Yuri Solodovnichenko | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 212 | 2024-09-19 | TCh-POL 1st League 2024 | Darlowo POL | 6.19 | Marcin Sieciechowicz | Kamil Stachowiak | 1/2-1/2 | 41 | Open |
| 213 | 2024-09-18 | TCh-POL 1st League 2024 | Darlowo POL | 5.13 | Kosma Pacan-Milej | Marcin Sieciechowicz | 1/2-1/2 | 11 | Open |
| 214 | 2024-09-17 | TCh-POL 1st League 2024 | Darlowo POL | 4.31 | Marcin Sieciechowicz | Stanislaw Zylka | 1/2-1/2 | 63 | Open |
| 215 | 2024-09-16 | TCh-POL 1st League 2024 | Darlowo POL | 3.31 | Ryszard Eggink | Marcin Sieciechowicz | 1/2-1/2 | 20 | Open |
| 216 | 2024-09-15 | TCh-POL 1st League 2024 | Darlowo POL | 2.13 | Marcin Sieciechowicz | Piotr Mickiewicz | 1/2-1/2 | 71 | Open |
| 217 | 2024-09-14 | TCh-POL 1st League 2024 | Darlowo POL | 1.19 | Bartlomiej Niedbala | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 218 | 2024-09-03 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 9.2 | Marcin Sieciechowicz | Pawel Teclaf | 1/2-1/2 | 4 | Open |
| 219 | 2024-09-02 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 8.4 | Md Imran | Marcin Sieciechowicz | 1/2-1/2 | 56 | Open |
| 220 | 2024-09-01 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 7.3 | Marcin Sieciechowicz | Piotr Brodowski | 1/2-1/2 | 10 | Open |
| 221 | 2024-08-31 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 6.3 | Aleksander Hnydiuk | Marcin Sieciechowicz | 1/2-1/2 | 13 | Open |
| 222 | 2024-08-30 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 5.2 | Marcin Sieciechowicz | Bartosz Socko | 1/2-1/2 | 20 | Open |
| 223 | 2024-08-29 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 4.5 | Marek Madej | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 224 | 2024-08-28 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 3.1 | Marcin Sieciechowicz | Szymon Gumularz | 1/2-1/2 | 18 | Open |
| 225 | 2024-08-27 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 2.7 | Jakub Janeczko | Marcin Sieciechowicz | 0-1 | 83 | Open |
| 226 | 2024-08-26 | Bydgoszcz Open A 2024 | Bydgoszcz POL | 1.9 | Marcin Sieciechowicz | Jaroslaw Paprocki | 1-0 | 51 | Open |
| 227 | 2024-08-20 | Titled Tue 20th Aug Late | chess.com INT | 6 | Pavel Eljanov | Marcin Sieciechowicz | 1-0 | 34 | Open |
| 228 | 2024-08-20 | Titled Tue 20th Aug Late | chess.com INT | 5 | Marcin Sieciechowicz | Rudolf Jun | 1-0 | 45 | Open |
| 229 | 2024-08-20 | Titled Tue 20th Aug Late | chess.com INT | 4 | Marcin Sieciechowicz | Adam Collins | 1/2-1/2 | 42 | Open |
| 230 | 2024-08-20 | Titled Tue 20th Aug Late | chess.com INT | 3 | Konstantin Popov | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 231 | 2024-08-20 | Titled Tue 20th Aug Late | chess.com INT | 2 | Marcin Sieciechowicz | Ariel Marichal Gonzalez | 1-0 | 56 | Open |
| 232 | 2024-08-20 | Titled Tue 20th Aug Late | chess.com INT | 1 | Aleksa Micic | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 233 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 9.1 | Marcin Sieciechowicz | Krzysztof Madrawski | 1-0 | 30 | Open |
| 234 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 8.6 | Lukasz Butkiewicz | Marcin Sieciechowicz | 1-0 | 62 | Open |
| 235 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 7.4 | Marcin Sieciechowicz | Serafym Oliinyk | 1/2-1/2 | 42 | Open |
| 236 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 6.4 | Karol Kucza | Marcin Sieciechowicz | 0-1 | 68 | Open |
| 237 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 5.11 | Marcin Sieciechowicz | Andriy Smeryk | 1/2-1/2 | 51 | Open |
| 238 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 4.4 | Wojciech Golenia | Marcin Sieciechowicz | 1-0 | 32 | Open |
| 239 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 3.6 | Marcin Sieciechowicz | Dariusz Szopka | 1-0 | 35 | Open |
| 240 | 2024-08-15 | Adolf Anderssen Mem 2024 | Wroclaw POL | 2.7 | Daniel Tyran | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 241 | 2024-08-14 | Wroclaw Open A 2024 | Wroclaw POL | 9.6 | Marcin Sieciechowicz | Arkadiusz Babiarz | 1-0 | 62 | Open |
| 242 | 2024-08-13 | Wroclaw Open A 2024 | Wroclaw POL | 8.4 | Eduardas Rozentalis | Marcin Sieciechowicz | 1/2-1/2 | 39 | Open |
| 243 | 2024-08-12 | Wroclaw Open A 2024 | Wroclaw POL | 7.4 | Marcin Sieciechowicz | Adam Gibala | 1/2-1/2 | 58 | Open |
| 244 | 2024-08-12 | Wroclaw Open A 2024 | Wroclaw POL | 6.1 | Mieszko Mis | Marcin Sieciechowicz | 1-0 | 85 | Open |
| 245 | 2024-08-11 | Wroclaw Open A 2024 | Wroclaw POL | 5.2 | Marcin Sieciechowicz | Gerrit Hourigan | 1-0 | 82 | Open |
| 246 | 2024-08-10 | Wroclaw Open A 2024 | Wroclaw POL | 4.3 | Marcin Sieciechowicz | Michal Koziorowicz | 1/2-1/2 | 66 | Open |
| 247 | 2024-08-09 | Wroclaw Open A 2024 | Wroclaw POL | 3.4 | Bhagat Kush | Marcin Sieciechowicz | 0-1 | 41 | Open |
| 248 | 2024-08-09 | Wroclaw Open A 2024 | Wroclaw POL | 2.13 | Marcin Sieciechowicz | Piotr Rainer | 1-0 | 24 | Open |
| 249 | 2024-08-08 | Wroclaw Open A 2024 | Wroclaw POL | 1.3 | Piotr Sygulski | Marcin Sieciechowicz | 1/2-1/2 | 31 | Open |
| 250 | 2024-06-29 | Krakow International 2024 | Krakow POL | 9.9 | Marcin Sieciechowicz | Sauat Nurgaliyev | 1-0 | 60 | Open |
| 251 | 2024-06-28 | Krakow International 2024 | Krakow POL | 8.9 | Selim Citak | Marcin Sieciechowicz | 1/2-1/2 | 21 | Open |
| 252 | 2024-06-27 | Krakow International 2024 | Krakow POL | 7.8 | Marcin Sieciechowicz | Mateusz Gorkiewicz | 1/2-1/2 | 30 | Open |
| 253 | 2024-06-26 | Krakow International 2024 | Krakow POL | 6.4 | Eduardas Rozentalis | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 254 | 2024-06-25 | Krakow International 2024 | Krakow POL | 5.3 | Marcin Sieciechowicz | Alexandr Fier | 1-0 | 30 | Open |
| 255 | 2024-06-24 | Krakow International 2024 | Krakow POL | 4.3 | Jakub Kosakowski | Marcin Sieciechowicz | 1/2-1/2 | 39 | Open |
| 256 | 2024-06-23 | Krakow International 2024 | Krakow POL | 3.12 | Marcin Sieciechowicz | Mahitosh Dey | 1-0 | 41 | Open |
| 257 | 2024-06-23 | Krakow International 2024 | Krakow POL | 2.7 | Jakub Janeczko | Marcin Sieciechowicz | 1/2-1/2 | 31 | Open |
| 258 | 2024-06-22 | Krakow International 2024 | Krakow POL | 1.17 | Marcin Sieciechowicz | Jan Vortmeier | 1-0 | 33 | Open |
| 259 | 2024-06-02 | ch-Malopolska 2024 | Krakow POL | 7.1 | Piotr Brzezina | Marcin Sieciechowicz | 1/2-1/2 | 24 | Open |
| 260 | 2024-06-01 | ch-Malopolska 2024 | Krakow POL | 6.2 | Marcin Sieciechowicz | Mateusz Brozyna | 1-0 | 73 | Open |
| 261 | 2024-05-31 | ch-Malopolska 2024 | Krakow POL | 4.4 | Marcin Sieciechowicz | Patryk Michalowski | 1-0 | 66 | Open |
| 262 | 2024-05-31 | ch-Malopolska 2024 | Krakow POL | 3.3 | Stanislaw Mirski | Marcin Sieciechowicz | 1/2-1/2 | 125 | Open |
| 263 | 2024-05-30 | ch-Malopolska 2024 | Krakow POL | 2.3 | Marcin Sieciechowicz | Anastasiia Hnatyshyn | 1-0 | 46 | Open |
| 264 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 9 | Marek Karas | Marcin Sieciechowicz | 1/2-1/2 | 67 | Open |
| 265 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 8 | Samuel Jesus P Goncalves | Marcin Sieciechowicz | 0-1 | 46 | Open |
| 266 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 7 | Marcin Sieciechowicz | Orest Vovk | 1-0 | 32 | Open |
| 267 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 6 | Ulysse Bottazzi | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 268 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 5 | Gata Kamsky | Marcin Sieciechowicz | 1-0 | 24 | Open |
| 269 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 4 | Marcin Sieciechowicz | Aydin Suleymanli | 0-1 | 35 | Open |
| 270 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 3 | Marcin Sieciechowicz | Jaime Santos Latasa | 1-0 | 51 | Open |
| 271 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 2 | Jacorey Bynum | Marcin Sieciechowicz | 0-1 | 37 | Open |
| 272 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 1 | Marcin Sieciechowicz | Katarzyna Dwilewicz | 1-0 | 32 | Open |
| 273 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 11 | Marcin Sieciechowicz | Havard Haug | 0-1 | 45 | Open |
| 274 | 2024-05-28 | Titled Tue 28th May Late | chess.com INT | 10 | Marcin Sieciechowicz | Vidar Grahn | 1-0 | 77 | Open |
| 275 | 2024-04-28 | 100th Ann. Silesian Chess | Katowice POL | 9.18 | Marcin Sieciechowicz | Honorata Kucharska | 1-0 | 60 | Open |
| 276 | 2024-04-28 | 100th Ann. Silesian Chess | Katowice POL | 8.3 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | 35 | Open |
| 277 | 2024-04-28 | 100th Ann. Silesian Chess | Katowice POL | 7.16 | Marcin Sieciechowicz | Maciej Adamczewski | 1-0 | 50 | Open |
| 278 | 2024-04-28 | 100th Ann. Silesian Chess | Katowice POL | 11.16 | Jakub Seemann | Marcin Sieciechowicz | 1/2-1/2 | 115 | Open |
| 279 | 2024-04-28 | 100th Ann. Silesian Chess | Katowice POL | 10.1 | Antoni Kozak | Marcin Sieciechowicz | 1/2-1/2 | 51 | Open |
| 280 | 2024-04-27 | 100th Ann. Silesian Chess | Katowice POL | 6.24 | Maxim Shynkarchuk | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 281 | 2024-04-27 | 100th Ann. Silesian Chess | Katowice POL | 5.14 | Marcin Sieciechowicz | Adrian Wisniewski | 1/2-1/2 | 67 | Open |
| 282 | 2024-04-27 | 100th Ann. Silesian Chess | Katowice POL | 4.23 | Jaroslaw Paprocki | Marcin Sieciechowicz | 0-1 | 119 | Open |
| 283 | 2024-04-27 | 100th Ann. Silesian Chess | Katowice POL | 3.31 | Marcin Sieciechowicz | Igor Musial | 1/2-1/2 | 48 | Open |
| 284 | 2024-04-27 | 100th Ann. Silesian Chess | Katowice POL | 2.32 | Pawel Chmiel | Marcin Sieciechowicz | 0-1 | 49 | Open |
| 285 | 2024-04-27 | 100th Ann. Silesian Chess | Katowice POL | 1.31 | Marcin Sieciechowicz | Andrzej Panek | 1-0 | 21 | Open |
| 286 | 2024-02-25 | 2nd Bundesliga Nord 23-24 | Germany GER | 8.3 | Gordon Andre | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 287 | 2024-02-24 | 2nd Bundesliga Nord 23-24 | Germany GER | 7.3 | Marcin Sieciechowicz | Moritz Gentemann | 1/2-1/2 | 25 | Open |
| 288 | 2024-02-04 | 2nd Bundesliga Nord 23-24 | Germany GER | 6.6 | Marcin Sieciechowicz | Michal Luch | 1/2-1/2 | 18 | Open |
| 289 | 2024-02-03 | 2nd Bundesliga Nord 23-24 | Germany GER | 5.6 | Joerg Seils | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 290 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 9 | Todd Andrews | Marcin Sieciechowicz | 0-1 | 47 | Open |
| 291 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 9 | Marcin Sieciechowicz | Hamed Wafa | 1-0 | 54 | Open |
| 292 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 8 | Anastasia Avramidou | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 293 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 8 | Marcin Sieciechowicz | Kayden Troff | 0-1 | 48 | Open |
| 294 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 7 | Le Thao Nguyen Pham | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 295 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 7 | Anna Kubicka | Marcin Sieciechowicz | 0-1 | 76 | Open |
| 296 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 6 | Marcin Sieciechowicz | Anton Smirnov | 0-1 | 32 | Open |
| 297 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 6 | Marcin Sieciechowicz | Aadit Bhatia | 0-1 | 42 | Open |
| 298 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 5 | Ilhan Serhat Salman | Marcin Sieciechowicz | 0-1 | 51 | Open |
| 299 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 5 | Marcin Sieciechowicz | Tobias Lang Nilsen | 1-0 | 66 | Open |
| 300 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 4 | Jack Mizzi | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 301 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 4 | Bora Cilek | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 302 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 3 | Jaiveer Mahendru | Marcin Sieciechowicz | 1/2-1/2 | 57 | Open |
| 303 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 3 | Marcin Sieciechowicz | Alexander Chernyavsky | 1-0 | 40 | Open |
| 304 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 2 | Alfeu Junior Varela Bueno | Marcin Sieciechowicz | 0-1 | 46 | Open |
| 305 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 2 | Marcin Sieciechowicz | Daniel Naroditsky | 0-1 | 50 | Open |
| 306 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 1 | Marcin Sieciechowicz | Kelvin Antonio Sanchez Alvares | 1-0 | 54 | Open |
| 307 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 1 | Marcin Sieciechowicz | Andrzej Krzywda | 0-1 | 45 | Open |
| 308 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 11 | Marcin Sieciechowicz | Atousa Pourkashiyan | 1-0 | 20 | Open |
| 309 | 2024-01-09 | Titled Tue 9th Jan Late | chess.com INT | 10 | Sebastien Joie | Marcin Sieciechowicz | 1/2-1/2 | 61 | Open |
| 310 | 2024-01-09 | Titled Tue 9th Jan Early | chess.com INT | 10 | Marco Materia | Marcin Sieciechowicz | 1-0 | 27 | Open |
| 311 | 2024-01-04 | 34th Cracovia Open A | Krakow POL | 9.15 | Pawel Piekielny | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 312 | 2024-01-03 | 34th Cracovia Open A | Krakow POL | 8.21 | Marcin Sieciechowicz | Tamer Tarik Selbes | 1-0 | 65 | Open |
| 313 | 2024-01-02 | 34th Cracovia Open A | Krakow POL | 7.15 | Dariusz Dziewonski | Marcin Sieciechowicz | 1-0 | 23 | Open |
| 314 | 2024-01-02 | 34th Cracovia Open A | Krakow POL | 6.14 | Marcin Sieciechowicz | R. Ashwath | 1/2-1/2 | 13 | Open |
| 315 | 2023-12-31 | 34th Cracovia Open A | Krakow POL | 5.9 | Julia Antolak | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 316 | 2023-12-30 | 34th Cracovia Open A | Krakow POL | 4.3 | Marcin Sieciechowicz | Abhimanyu Puranik | 1/2-1/2 | 42 | Open |
| 317 | 2023-12-29 | 34th Cracovia Open A | Krakow POL | 3.4 | Igor Janik | Marcin Sieciechowicz | 1/2-1/2 | 15 | Open |
| 318 | 2023-12-28 | 34th Cracovia Open A | Krakow POL | 2.12 | Marcin Sieciechowicz | Shahin Valiyev | 1-0 | 41 | Open |
| 319 | 2023-12-27 | 34th Cracovia Open A | Krakow POL | 1.2 | Krzysztof Szczurek | Marcin Sieciechowicz | 0-1 | 67 | Open |
| 320 | 2023-12-12 | ch-POL Semifinal 2023 | Karpacz POL | 9.2 | Radoslaw Psyk | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 321 | 2023-12-11 | ch-POL Semifinal 2023 | Karpacz POL | 8.1 | Marcin Sieciechowicz | Jakub Kosakowski | 1/2-1/2 | 21 | Open |
| 322 | 2023-12-10 | ch-POL Semifinal 2023 | Karpacz POL | 7.3 | Bartlomiej Rog | Marcin Sieciechowicz | 0-1 | 38 | Open |
| 323 | 2023-12-09 | ch-POL Semifinal 2023 | Karpacz POL | 6.2 | Marcin Sieciechowicz | Wojciech Moranda | 1/2-1/2 | 20 | Open |
| 324 | 2023-12-08 | ch-POL Semifinal 2023 | Karpacz POL | 5.4 | Marcin Sieciechowicz | Michal Fiedorek | 1-0 | 37 | Open |
| 325 | 2023-12-07 | ch-POL Semifinal 2023 | Karpacz POL | 4.6 | Wladyslaw Pycinski | Marcin Sieciechowicz | 0-1 | 89 | Open |
| 326 | 2023-12-06 | ch-POL Semifinal 2023 | Karpacz POL | 3.8 | Marcin Sieciechowicz | Adam Gibala | 1-0 | 41 | Open |
| 327 | 2023-12-05 | ch-POL Semifinal 2023 | Karpacz POL | 2.11 | Jan Krol | Marcin Sieciechowicz | 1/2-1/2 | 47 | Open |
| 328 | 2023-12-04 | ch-POL Semifinal 2023 | Karpacz POL | 1.7 | Marcin Sieciechowicz | Patryk Rekuc | 1/2-1/2 | 66 | Open |
| 329 | 2023-12-03 | 2nd Bundesliga Nord 23-24 | Germany GER | 4.5 | Krzysztof Jakubowski | Marcin Sieciechowicz | 0-1 | 37 | Open |
| 330 | 2023-11-12 | 17th Figueira da Foz Open | Figueira da Foz POR | 9.13 | Marcin Sieciechowicz | Aleksander Kaczmarek | 0-1 | 44 | Open |
| 331 | 2023-11-11 | 17th Figueira da Foz Open | Figueira da Foz POR | 8.18 | Miguel Almeida Morais | Marcin Sieciechowicz | 0-1 | 69 | Open |
| 332 | 2023-11-10 | 17th Figueira da Foz Open | Figueira da Foz POR | 7.16 | Marcin Sieciechowicz | Chitlange Sakshi | 1/2-1/2 | 62 | Open |
| 333 | 2023-11-09 | 17th Figueira da Foz Open | Figueira da Foz POR | 6.18 | Jose Padeiro | Marcin Sieciechowicz | 1/2-1/2 | 34 | Open |
| 334 | 2023-11-08 | 17th Figueira da Foz Open | Figueira da Foz POR | 5.15 | Marcin Sieciechowicz | Mikkel Manosri Jacobsen | 1/2-1/2 | 38 | Open |
| 335 | 2023-11-07 | 17th Figueira da Foz Open | Figueira da Foz POR | 4.13 | Anustoop Biswas | Marcin Sieciechowicz | 1/2-1/2 | 31 | Open |
| 336 | 2023-11-07 | 17th Figueira da Foz Open | Figueira da Foz POR | 3.3 | Marcin Sieciechowicz | Lalit Babu M R | 0-1 | 35 | Open |
| 337 | 2023-11-06 | 17th Figueira da Foz Open | Figueira da Foz POR | 2.21 | Joao Pedro Menezes Andias | Marcin Sieciechowicz | 0-1 | 50 | Open |
| 338 | 2023-11-05 | 17th Figueira da Foz Open | Figueira da Foz POR | 1.21 | Marcin Sieciechowicz | Ana Ines Teixeira Da Silva | 1-0 | 46 | Open |
| 339 | 2023-10-22 | 2nd Bundesliga Nord 23-24 | Germany GER | 2.3 | Marcin Sieciechowicz | Armen Ar. Barseghyan | 1-0 | 35 | Open |
| 340 | 2023-10-21 | 2nd Bundesliga Nord 23-24 | Germany GER | 1.3 | Frederick Waldhausen Gordon | Marcin Sieciechowicz | 1/2-1/2 | 33 | Open |
| 341 | 2023-10-16 | Rapid Chess Superleague | Poland POL | 14.3 | Marcin Sieciechowicz | Pawel Kowalczyk | 1-0 | 47 | Open |
| 342 | 2023-10-16 | Rapid Chess Superleague | Poland POL | 13.3 | Bartosz Socko | Marcin Sieciechowicz | 1/2-1/2 | 62 | Open |
| 343 | 2023-10-16 | Rapid Chess Superleague | Poland POL | 12.3 | Marcin Sieciechowicz | Dariusz Mikrut | 1/2-1/2 | 49 | Open |
| 344 | 2023-10-16 | Rapid Chess Superleague | Poland POL | 11.3 | Szymon Gumularz | Marcin Sieciechowicz | 1-0 | 32 | Open |
| 345 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 9.12 | Pawel Stempin | Marcin Sieciechowicz | 1/2-1/2 | 39 | Open |
| 346 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 8.11 | Marcin Sieciechowicz | Jolanta Zawadzka | 1/2-1/2 | 43 | Open |
| 347 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 7.12 | Piotr Madajczak | Marcin Sieciechowicz | 1/2-1/2 | 62 | Open |
| 348 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 6.13 | Marcin Sieciechowicz | Grzegorz Dabrowski | 1-0 | 29 | Open |
| 349 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 5.14 | Pawel Piekielny | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 350 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 4.2 | Marcin Sieciechowicz | Igor Wilk | 1/2-1/2 | 98 | Open |
| 351 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 3.17 | Kamil Kaliszuk | Marcin Sieciechowicz | 1/2-1/2 | 32 | Open |
| 352 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 2.19 | Marcin Sieciechowicz | Jerzy Kot | 1-0 | 20 | Open |
| 353 | 2023-10-07 | ch-POL Rapid 2023 | Lublin POL | 1.19 | Przemyslaw Lichwa | Marcin Sieciechowicz | 0-1 | 18 | Open |
| 354 | 2023-10-01 | TCh-POL 1st League 2023 | Leba POL | 9.5 | Jan Kokoszczynski | Marcin Sieciechowicz | 1/2-1/2 | 23 | Open |
| 355 | 2023-09-30 | TCh-POL 1st League 2023 | Leba POL | 8.7 | Marcin Sieciechowicz | Jaroslaw Paprocki | 1-0 | 39 | Open |
| 356 | 2023-09-29 | TCh-POL 1st League 2023 | Leba POL | 7.5 | Kosma Pacan-Milej | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 357 | 2023-09-28 | TCh-POL 1st League 2023 | Leba POL | 6.4 | Marcin Sieciechowicz | Patryk Chylewski | 1/2-1/2 | 17 | Open |
| 358 | 2023-09-27 | TCh-POL 1st League 2023 | Leba POL | 5.2 | Marcin Sieciechowicz | Marcin Dziuba | 1/2-1/2 | 24 | Open |
| 359 | 2023-09-26 | TCh-POL 1st League 2023 | Leba POL | 4.2 | Antoni Kozak | Marcin Sieciechowicz | 0-1 | 26 | Open |
| 360 | 2023-09-25 | TCh-POL 1st League 2023 | Leba POL | 3.4 | Radoslaw Psyk | Marcin Sieciechowicz | 0-1 | 64 | Open |
| 361 | 2023-09-24 | TCh-POL 1st League 2023 | Leba POL | 2.1 | Marcin Sieciechowicz | Kamil Dragun | 0-1 | 36 | Open |
| 362 | 2023-09-23 | TCh-POL 1st League 2023 | Leba POL | 1.6 | Andrzej Krzywda | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 363 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 9.6 | Marcin Sieciechowicz | Artem Padalka | 1-0 | 42 | Open |
| 364 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 8.2 | Igor Janik | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 365 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 7.1 | Marcin Sieciechowicz | Szymon Gumularz | 1/2-1/2 | 58 | Open |
| 366 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 6.4 | Jakub Kosakowski | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 367 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 5.6 | Marcin Sieciechowicz | Michal Bartel | 1-0 | 37 | Open |
| 368 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 4.6 | Marcin Sieciechowicz | Maria Malicka | 1/2-1/2 | 70 | Open |
| 369 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 3.9 | Kacper Jarzebowski | Marcin Sieciechowicz | 0-1 | 24 | Open |
| 370 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 2.1 | Marcin Sieciechowicz | Gabriela Kroliczek | 1-0 | 58 | Open |
| 371 | 2023-09-17 | Szansa Open Rapid 2023 | Warsaw POL | 1.11 | Jakub Prokopiuk | Marcin Sieciechowicz | 0-1 | 31 | Open |
| 372 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 9 | Bartosz Socko | Marcin Sieciechowicz | 1/2-1/2 | 33 | Open |
| 373 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 8 | Marcin Sieciechowicz | Maciej Malik | 1-0 | 24 | Open |
| 374 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 7 | Marek Chomczyk | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 375 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 6 | Marcin Sieciechowicz | Filip Klim | 1-0 | 35 | Open |
| 376 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 5 | Platon Galperin | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 377 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 4 | Marcin Sieciechowicz | Tykhon Cherniaiev | 1/2-1/2 | 41 | Open |
| 378 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 3 | Adrian Budzisz | Marcin Sieciechowicz | 0-1 | 29 | Open |
| 379 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 2 | Marcin Sieciechowicz | Michal Goslawski | 1-0 | 25 | Open |
| 380 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 1 | Piotr Flis | Marcin Sieciechowicz | 0-1 | 26 | Open |
| 381 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 13 | Lukasz Licznerski | Marcin Sieciechowicz | 1-0 | 36 | Open |
| 382 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 12 | Artem Padalka | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 383 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 11 | Marcin Sieciechowicz | Grzegorz Nasuta | 0-1 | 28 | Open |
| 384 | 2023-09-16 | Szansa Open Blitz 2023 | Warsaw POL | 10 | Marcin Sieciechowicz | Jakub Kosakowski | 1/2-1/2 | 75 | Open |
| 385 | 2023-09-10 | 10th POL-HUN Rapid 2023 | Katowice POL | 9.32 | Blazej Grot | Marcin Sieciechowicz | 1/2-1/2 | 78 | Open |
| 386 | 2023-09-10 | 10th POL-HUN Rapid 2023 | Katowice POL | 8.3 | Marcin Sieciechowicz | Martyna Starosta | 1/2-1/2 | 47 | Open |
| 387 | 2023-09-10 | 10th POL-HUN Rapid 2023 | Katowice POL | 7.19 | Wojciech Golenia | Marcin Sieciechowicz | 1-0 | 29 | Open |
| 388 | 2023-09-10 | 10th POL-HUN Rapid 2023 | Katowice POL | 6.5 | Marcin Sieciechowicz | Pawel Czarnota | 0-1 | 54 | Open |
| 389 | 2023-09-09 | 10th POL-HUN Rapid 2023 | Katowice POL | 5.12 | Adrian Wisniewski | Marcin Sieciechowicz | 0-1 | 35 | Open |
| 390 | 2023-09-09 | 10th POL-HUN Rapid 2023 | Katowice POL | 4.3 | Marcin Sieciechowicz | Szymon Gumularz | 1/2-1/2 | 64 | Open |
| 391 | 2023-09-09 | 10th POL-HUN Rapid 2023 | Katowice POL | 3.21 | Flawian Krawczyk | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 392 | 2023-09-09 | 10th POL-HUN Rapid 2023 | Katowice POL | 2.27 | Marcin Sieciechowicz | Bartlomiej Cichon | 1-0 | 27 | Open |
| 393 | 2023-09-09 | 10th POL-HUN Rapid 2023 | Katowice POL | 1.27 | Quoc Anh Nguyen Doan | Marcin Sieciechowicz | 0-1 | 23 | Open |
| 394 | 2023-07-19 | Najdorf Mem Open A 2023 | Warsaw POL | 9.8 | Michal Taranowicz | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 395 | 2023-07-18 | Najdorf Mem Open A 2023 | Warsaw POL | 8.2 | Marcin Sieciechowicz | Deep Sengupta | 0-1 | 60 | Open |
| 396 | 2023-07-17 | Najdorf Mem Open A 2023 | Warsaw POL | 7.4 | Filip Cukrowski | Marcin Sieciechowicz | 1/2-1/2 | 36 | Open |
| 397 | 2023-07-16 | Najdorf Mem Open A 2023 | Warsaw POL | 6.3 | Marcin Sieciechowicz | Krzysztof Jakubowski | 1/2-1/2 | 23 | Open |
| 398 | 2023-07-15 | Najdorf Mem Open A 2023 | Warsaw POL | 5.1 | Valery Kazakouski | Marcin Sieciechowicz | 1/2-1/2 | 65 | Open |
| 399 | 2023-07-14 | Najdorf Mem Open A 2023 | Warsaw POL | 4.5 | Rafal Kowalczyk | Marcin Sieciechowicz | 0-1 | 24 | Open |
| 400 | 2023-07-13 | Najdorf Mem Open A 2023 | Warsaw POL | 3.3 | Marcin Sieciechowicz | Valiantsin Yezhel | 1/2-1/2 | 26 | Open |
| 401 | 2023-07-12 | Najdorf Mem Open A 2023 | Warsaw POL | 2.6 | Maciej Zalega | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 402 | 2023-07-11 | Najdorf Mem Open A 2023 | Warsaw POL | 1.8 | Marcin Sieciechowicz | Victoriano Sanz Losada | 1-0 | 58 | Open |
| 403 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 9.11 | Marcin Sieciechowicz | Jan Kokoszczynski | 0-1 | 55 | Open |
| 404 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 8.8 | Patryk Chylewski | Marcin Sieciechowicz | 1/2-1/2 | 55 | Open |
| 405 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 7.13 | Marcin Sieciechowicz | Patryk Rekuc | 1-0 | 41 | Open |
| 406 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 6.1 | Anna Jakubowska | Marcin Sieciechowicz | 1/2-1/2 | 34 | Open |
| 407 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 5.12 | Marcin Sieciechowicz | Adam Jedrusik | 1-0 | 39 | Open |
| 408 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 4.13 | Mariusz Szewczyk | Marcin Sieciechowicz | 1-0 | 47 | Open |
| 409 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 3.15 | Marcin Sieciechowicz | Artem Padalka | 1-0 | 44 | Open |
| 410 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 2.14 | Adam Lasota | Marcin Sieciechowicz | 0-1 | 56 | Open |
| 411 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 11.17 | Marcin Sieciechowicz | Tymon Ochedzan | 0-1 | 21 | Open |
| 412 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 10.14 | Kyrylo Nesterenko | Marcin Sieciechowicz | 1/2-1/2 | 31 | Open |
| 413 | 2023-07-10 | Jana Maciei Mem 2023 | Warsaw POL | 1.15 | Marcin Sieciechowicz | Radoslaw Krzyzewski | 1-0 | 28 | Open |
| 414 | 2023-07-02 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 9.9 | Marcin Sieciechowicz | Maksym Dubnevych | 1-0 | 19 | Open |
| 415 | 2023-07-01 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 8.7 | Pawel Czarnota | Marcin Sieciechowicz | 1/2-1/2 | 77 | Open |
| 416 | 2023-06-30 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 7.7 | Marcin Sieciechowicz | Krzysztof Chojnacki | 1/2-1/2 | 27 | Open |
| 417 | 2023-06-29 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 6.12 | Kacper Kacprzak | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 418 | 2023-06-28 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 5.3 | Marcin Sieciechowicz | Szymon Gumularz | 0-1 | 39 | Open |
| 419 | 2023-06-27 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 4.2 | Mircea-Emilian Parligras | Marcin Sieciechowicz | 1/2-1/2 | 51 | Open |
| 420 | 2023-06-26 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 3.1 | Marcin Sieciechowicz | Adam Zielonka | 1-0 | 40 | Open |
| 421 | 2023-06-25 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 2.14 | Wiktor Golis | Marcin Sieciechowicz | 1/2-1/2 | 83 | Open |
| 422 | 2023-06-24 | Bydgoszcz Open A 2023 | Bydgoszcz POL | 1.14 | Marcin Sieciechowicz | Krzysztof Lewandowski | 1-0 | 44 | Open |
| 423 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 8 | Marcin Sieciechowicz | Bojan Maksimovic | 0-1 | 40 | Open |
| 424 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 7 | Aryan Tari | Marcin Sieciechowicz | 0-1 | 55 | Open |
| 425 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 6 | Mark Liubarov | Marcin Sieciechowicz | 0-1 | 38 | Open |
| 426 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 5 | Marcin Sieciechowicz | Arthur Kruckenhauser | 1-0 | 46 | Open |
| 427 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 4 | Machteld Van Foreest | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 428 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 3 | Alejandro Uzcategui Rodriguez | Marcin Sieciechowicz | 0-1 | 77 | Open |
| 429 | 2023-06-13 | Titled Tue 13th Jun Early | chess.com INT | 3 | Stanislav Kovalevsky | Marcin Sieciechowicz | 1-0 | 118 | Open |
| 430 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 2 | Marcin Sieciechowicz | Nihal Sarin | 0-1 | 51 | Open |
| 431 | 2023-06-13 | Titled Tue 13th Jun Early | chess.com INT | 2 | Marcin Sieciechowicz | Vladimir Fedoseev | 0-1 | 35 | Open |
| 432 | 2023-06-13 | Titled Tue 13th Jun Late | chess.com INT | 1 | Raymond Gao | Marcin Sieciechowicz | 0-1 | 68 | Open |
| 433 | 2023-06-13 | Titled Tue 13th Jun Early | chess.com INT | 1 | Marcin Sieciechowicz | Roman Goldin | 1-0 | 23 | Open |
| 434 | 2023-06-11 | ch-Malopolska 2023 | Krakow POL | 7.2 | Marcin Sieciechowicz | Jakub Suder | 1-0 | 30 | Open |
| 435 | 2023-06-10 | ch-Malopolska 2023 | Krakow POL | 6.2 | Jerzy Kyc | Marcin Sieciechowicz | 1/2-1/2 | 53 | Open |
| 436 | 2023-06-10 | ch-Malopolska 2023 | Krakow POL | 5.1 | Marcin Sieciechowicz | Egor Bogdanov | 1/2-1/2 | 32 | Open |
| 437 | 2023-06-09 | ch-Malopolska 2023 | Krakow POL | 4.2 | Petro Golubka | Marcin Sieciechowicz | 1/2-1/2 | 57 | Open |
| 438 | 2023-06-09 | ch-Malopolska 2023 | Krakow POL | 3.3 | Marcin Sieciechowicz | Witold Klepek | 1-0 | 35 | Open |
| 439 | 2023-06-08 | ch-Malopolska 2023 | Krakow POL | 2.4 | Rafal Tymrakiewicz | Marcin Sieciechowicz | 0-1 | 69 | Open |
| 440 | 2023-06-08 | ch-Malopolska 2023 | Krakow POL | 1.5 | Marcin Sieciechowicz | Filip Wnek | 1-0 | 22 | Open |
| 441 | 2023-06-07 | Rapid Chess Superleague | Poland POL | 9.3 | Kamil Dzida | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 442 | 2023-06-07 | Rapid Chess Superleague | Poland POL | 8.3 | Marcin Sieciechowicz | Platon Galperin | 1/2-1/2 | 42 | Open |
| 443 | 2023-06-07 | Rapid Chess Superleague | Poland POL | 10.3 | Marcin Sieciechowicz | Marcin Dziuba | 1/2-1/2 | 28 | Open |
| 444 | 2023-06-06 | Titled Tue 6th Jun Late | chess.com INT | 7 | Serafin Moral Garcia | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 445 | 2023-06-06 | Titled Tue 6th Jun Late | chess.com INT | 6 | Marcin Sieciechowicz | Matthew J Wadsworth | 0-1 | 38 | Open |
| 446 | 2023-06-06 | Titled Tue 6th Jun Late | chess.com INT | 5 | Maxim Matlakov | Marcin Sieciechowicz | 1-0 | 34 | Open |
| 447 | 2023-06-06 | Titled Tue 6th Jun Late | chess.com INT | 4 | Robert Safin | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 448 | 2023-06-06 | Titled Tue 6th Jun Late | chess.com INT | 3 | Marcin Sieciechowicz | Evgenij Novikov | 1-0 | 49 | Open |
| 449 | 2023-06-06 | Titled Tue 6th Jun Late | chess.com INT | 2 | Mark Liubarov | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 450 | 2023-06-06 | Titled Tue 6th Jun Late | chess.com INT | 1 | Marcin Sieciechowicz | Sabrina Vega Gutierrez | 1/2-1/2 | 64 | Open |
| 451 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 8 | Ivan Martic | Marcin Sieciechowicz | 1-0 | 63 | Open |
| 452 | 2023-05-30 | Titled Tue 30th May Early | chess.com INT | 7 | Marcin Sieciechowicz | Anastasia Bodnaruk | 1/2-1/2 | 63 | Open |
| 453 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 7 | Marcin Sieciechowicz | Ali Mortazavi | 1/2-1/2 | 60 | Open |
| 454 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 6 | Artai Bringas Gomez | Marcin Sieciechowicz | 0-1 | 67 | Open |
| 455 | 2023-05-30 | Titled Tue 30th May Early | chess.com INT | 6 | Aleksandr Lenderman | Marcin Sieciechowicz | 1-0 | 60 | Open |
| 456 | 2023-05-30 | Titled Tue 30th May Early | chess.com INT | 5 | Peter T Roberson | Marcin Sieciechowicz | 0-1 | 62 | Open |
| 457 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 5 | Marcin Sieciechowicz | Cristian Sanhueza | 1-0 | 22 | Open |
| 458 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 4 | Radislav Atanassov | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 459 | 2023-05-30 | Titled Tue 30th May Early | chess.com INT | 4 | Marcin Sieciechowicz | Sanan Sjugirov | 0-1 | 89 | Open |
| 460 | 2023-05-30 | Titled Tue 30th May Early | chess.com INT | 3 | Semen Kazmin | Marcin Sieciechowicz | 0-1 | 47 | Open |
| 461 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 3 | Marcin Sieciechowicz | Juan Rottenwohrer Suarez | 1/2-1/2 | 78 | Open |
| 462 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 2 | Patryk Chylewski | Marcin Sieciechowicz | 1-0 | 37 | Open |
| 463 | 2023-05-30 | Titled Tue 30th May Early | chess.com INT | 2 | Marcin Sieciechowicz | Patryk Chylewski | 1-0 | 39 | Open |
| 464 | 2023-05-30 | Titled Tue 30th May Early | chess.com INT | 1 | Florian Gatterer | Marcin Sieciechowicz | 0-1 | 92 | Open |
| 465 | 2023-05-30 | Titled Tue 30th May Late | chess.com INT | 1 | Marcin Sieciechowicz | Inigo Argandona Riveiro | 1-0 | 52 | Open |
| 466 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 8 | Marcin Sieciechowicz | Jake Kleiman | 0-1 | 31 | Open |
| 467 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 7 | Hamed Wafa | Marcin Sieciechowicz | 1/2-1/2 | 74 | Open |
| 468 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 6 | Marcin Sieciechowicz | Artem Dyachuk | 1-0 | 47 | Open |
| 469 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 5 | Kevin Chor | Marcin Sieciechowicz | 1-0 | 59 | Open |
| 470 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 4 | Marcin Sieciechowicz | Vugar Rasulov | 0-1 | 34 | Open |
| 471 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 3 | Cristian-Stefan Serban | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 472 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 2 | Semetei Tologon tegin | Marcin Sieciechowicz | 0-1 | 29 | Open |
| 473 | 2023-05-23 | Titled Tue 23rd May Late | chess.com INT | 1 | Marcin Sieciechowicz | Frederick Litchfield | 1-0 | 47 | Open |
| 474 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 9 | Gyula Pap | Marcin Sieciechowicz | 1-0 | 50 | Open |
| 475 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 9 | Denis Lazavik | Marcin Sieciechowicz | 1-0 | 20 | Open |
| 476 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 8 | Leonid Starozhilov | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 477 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 8 | Marcin Sieciechowicz | Sergey Grigoriants | 1/2-1/2 | 56 | Open |
| 478 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 7 | Dmitry Andreikin | Marcin Sieciechowicz | 1-0 | 39 | Open |
| 479 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 7 | Marcin Sieciechowicz | Ivan Yeletsky | 0-1 | 87 | Open |
| 480 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 6 | Marcin Sieciechowicz | Matthias Bluebaum | 1-0 | 81 | Open |
| 481 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 6 | Alan Pichot | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 482 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 5 | Vladimir Demin | Marcin Sieciechowicz | 0-1 | 31 | Open |
| 483 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 5 | Marcin Sieciechowicz | Krikor Sevag Mekhitarian | 1-0 | 67 | Open |
| 484 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 4 | Marcin Sieciechowicz | Jose Eduardo Martinez Alcantara | 0-1 | 34 | Open |
| 485 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 4 | Marcin Sieciechowicz | Vugar Rasulov | 1-0 | 66 | Open |
| 486 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 3 | Mika Karttunen | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 487 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 3 | Marcin Sieciechowicz | Nadya Toncheva | 1-0 | 65 | Open |
| 488 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 2 | Marcin Sieciechowicz | Oleg Papayan | 1-0 | 46 | Open |
| 489 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 2 | Wojciech Przybylski | Marcin Sieciechowicz | 1/2-1/2 | 69 | Open |
| 490 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 1 | Sai Han Thiha | Marcin Sieciechowicz | 1/2-1/2 | 68 | Open |
| 491 | 2023-05-16 | Titled Tue 16th May Early | chess.com INT | 1 | Marcin Sieciechowicz | Pawel Dudzinski | 1-0 | 47 | Open |
| 492 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 11 | Marcin Sieciechowicz | Vasif Durarbayli | 0-1 | 44 | Open |
| 493 | 2023-05-16 | Titled Tue 16th May Late | chess.com INT | 10 | Marcin Sieciechowicz | Aleks Sahakyan | 1-0 | 44 | Open |
| 494 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 9 | Eric Rosen | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 495 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 8 | Marcin Sieciechowicz | Sargis A. Manukyan | 1-0 | 71 | Open |
| 496 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 7 | Marcin Sieciechowicz | Renato Terry | 0-1 | 62 | Open |
| 497 | 2023-05-09 | Titled Tue 9th May Early | chess.com INT | 7 | Aran Kohler | Marcin Sieciechowicz | 1-0 | 29 | Open |
| 498 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 6 | Semetei Tologon tegin | Marcin Sieciechowicz | 0-1 | 35 | Open |
| 499 | 2023-05-09 | Titled Tue 9th May Early | chess.com INT | 6 | Marcin Sieciechowicz | Jakub Seemann | 0-1 | 74 | Open |
| 500 | 2023-05-09 | Titled Tue 9th May Early | chess.com INT | 5 | Piotr Piesik | Marcin Sieciechowicz | 1/2-1/2 | 67 | Open |
| 501 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 5 | Marcin Sieciechowicz | Lennert Lenaerts | 1/2-1/2 | 64 | Open |
| 502 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 4 | Jose Eduardo Martinez Alcantara | Marcin Sieciechowicz | 1-0 | 35 | Open |
| 503 | 2023-05-09 | Titled Tue 9th May Early | chess.com INT | 4 | Lazaro Lorenzo De La Riva | Marcin Sieciechowicz | 1/2-1/2 | 47 | Open |
| 504 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 3 | Marcos Rodriguez Fontecha | Marcin Sieciechowicz | 0-1 | 35 | Open |
| 505 | 2023-05-09 | Titled Tue 9th May Early | chess.com INT | 3 | Marcin Sieciechowicz | Artem Dyachuk | 1/2-1/2 | 54 | Open |
| 506 | 2023-05-09 | Titled Tue 9th May Early | chess.com INT | 2 | Nikolai Vlassov | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 507 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 2 | Marcin Sieciechowicz | Angel Gabriel Cordoba Roa | 1-0 | 39 | Open |
| 508 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 1 | Adrian Villuendas Valero | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 509 | 2023-05-09 | Titled Tue 9th May Early | chess.com INT | 1 | Marcin Sieciechowicz | Yosha Iglesias | 1-0 | 26 | Open |
| 510 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 11 | Marcin Sieciechowicz | Li Min Peng | 0-1 | 22 | Open |
| 511 | 2023-05-09 | Titled Tue 9th May Late | chess.com INT | 10 | Marcin Sieciechowicz | Alan Pichot | 0-1 | 34 | Open |
| 512 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 9 | David Paravyan | Marcin Sieciechowicz | 1-0 | 28 | Open |
| 513 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 9 | Marcin Sieciechowicz | Robert Baskin | 1-0 | 28 | Open |
| 514 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 8 | Maxim Matlakov | Marcin Sieciechowicz | 1-0 | 26 | Open |
| 515 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 8 | Marcin Sieciechowicz | Aleksandr Shimanov | 0-1 | 56 | Open |
| 516 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 7 | Parham Maghsoodloo | Marcin Sieciechowicz | 1/2-1/2 | 57 | Open |
| 517 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 7 | Marcin Sieciechowicz | Vladimir Kramnik | 1/2-1/2 | 88 | Open |
| 518 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 6 | Yuriy Kuzubov | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 519 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 6 | Marcin Sieciechowicz | Farid Mustafayev | 1-0 | 44 | Open |
| 520 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 5 | Alvaro Valdes Escobar | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 521 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 5 | Aram Hakobyan | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 522 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 4 | Shant Sargsyan | Marcin Sieciechowicz | 0-1 | 56 | Open |
| 523 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 4 | Marcin Sieciechowicz | Ivan Vihor Krsnik Cohar | 1-0 | 23 | Open |
| 524 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 3 | Gerson Principe | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 525 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 3 | Marcin Sieciechowicz | Marek Karas | 1-0 | 56 | Open |
| 526 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 2 | Kostya Kavutskiy | Marcin Sieciechowicz | 0-1 | 62 | Open |
| 527 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 2 | Marcin Sieciechowicz | Jaime Vaglio Munoz | 1-0 | 33 | Open |
| 528 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 1 | Alejandro Castellanos Gomez | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 529 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 1 | Marcin Sieciechowicz | Ilya Gutkin | 1-0 | 39 | Open |
| 530 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 11 | Jakub Seemann | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 531 | 2023-05-02 | Titled Tue 2nd May Late | chess.com INT | 10 | Marcin Sieciechowicz | Mahammad Muradli | 1/2-1/2 | 110 | Open |
| 532 | 2023-05-02 | Titled Tue 2nd May Early | chess.com INT | 10 | Michal Bartel | Marcin Sieciechowicz | 1-0 | 19 | Open |
| 533 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 9 | Marcin Sieciechowicz | Viktor Shapiro | 1-0 | 32 | Open |
| 534 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 8 | Nikolaos Aggelis | Marcin Sieciechowicz | 0-1 | 63 | Open |
| 535 | 2023-04-25 | Titled Tue 25th Apr Early | chess.com INT | 7 | Marcin Sieciechowicz | Viktor Skliarov | 0-1 | 62 | Open |
| 536 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 7 | Marcin Sieciechowicz | Eline Roebers | 0-1 | 38 | Open |
| 537 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 6 | Rasmus Svane | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 538 | 2023-04-25 | Titled Tue 25th Apr Early | chess.com INT | 6 | Alexander Bagrationi | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 539 | 2023-04-25 | Titled Tue 25th Apr Early | chess.com INT | 5 | Marcin Sieciechowicz | Gukesh D | 0-1 | 77 | Open |
| 540 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 5 | Marcin Sieciechowicz | Nicholas Ladan | 1-0 | 64 | Open |
| 541 | 2023-04-25 | Titled Tue 25th Apr Early | chess.com INT | 4 | Jose Eduardo Martinez Alcantara | Marcin Sieciechowicz | 0-1 | 64 | Open |
| 542 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 4 | Eric Liu | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 543 | 2023-04-25 | Titled Tue 25th Apr Early | chess.com INT | 3 | Marcin Sieciechowicz | Robert Safin | 1-0 | 42 | Open |
| 544 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 3 | Marcin Sieciechowicz | Guillermo Baches Garcia | 1-0 | 24 | Open |
| 545 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 2 | Mikhail Pesotskiy | Marcin Sieciechowicz | 1-0 | 74 | Open |
| 546 | 2023-04-25 | Titled Tue 25th Apr Early | chess.com INT | 2 | Marcin Sieciechowicz | Dilshad Mohammed | 1-0 | 45 | Open |
| 547 | 2023-04-25 | Titled Tue 25th Apr Early | chess.com INT | 1 | Fabian Ernesto Vivas Zamora | Marcin Sieciechowicz | 1/2-1/2 | 67 | Open |
| 548 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 1 | Marcin Sieciechowicz | Kleyton Alcantara Lima | 1-0 | 28 | Open |
| 549 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 11 | Patrik Aalto | Marcin Sieciechowicz | 0-1 | 41 | Open |
| 550 | 2023-04-25 | Titled Tue 25th Apr Late | chess.com INT | 10 | Yasser Quesada Perez | Marcin Sieciechowicz | 1-0 | 66 | Open |
| 551 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 9 | Alexander Devaev | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 552 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 9 | Sergei Zhigalko | Marcin Sieciechowicz | 1-0 | 24 | Open |
| 553 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 8 | Marcin Sieciechowicz | Eric Liu | 1-0 | 29 | Open |
| 554 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 8 | Marcin Sieciechowicz | Blazej Grot | 1/2-1/2 | 18 | Open |
| 555 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 7 | Eric Hansen | Marcin Sieciechowicz | 1-0 | 37 | Open |
| 556 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 7 | Marcin Sieciechowicz | Jasper Rom | 1-0 | 33 | Open |
| 557 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 6 | Olga Matveeva | Marcin Sieciechowicz | 0-1 | 51 | Open |
| 558 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 6 | Marcin Sieciechowicz | Mateusz Bartel | 1/2-1/2 | 57 | Open |
| 559 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 5 | David Anton Guijarro | Marcin Sieciechowicz | 1/2-1/2 | 61 | Open |
| 560 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 5 | Marcin Sieciechowicz | Nicodim-Cosmin Stepanencu | 0-1 | 52 | Open |
| 561 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 4 | Dimitry Korol | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 562 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 4 | Marcin Sieciechowicz | Jan Boder | 1-0 | 52 | Open |
| 563 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 3 | Oleg Papayan | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 564 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 3 | Marcin Sieciechowicz | Jose Joaquin Bas Mas | 0-1 | 37 | Open |
| 565 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 2 | Denis Lazavik | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 566 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 2 | Marcin Sieciechowicz | Alireza Firouzja | 0-1 | 34 | Open |
| 567 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 1 | Djuro Skaric | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 568 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 1 | Felix Rose | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 569 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 11 | Marcin Sieciechowicz | Matvey Galchenko | 0-1 | 21 | Open |
| 570 | 2023-04-18 | Titled Tue 18th Apr Early | chess.com INT | 10 | Arsen Kukhmazov | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 571 | 2023-04-18 | Titled Tue 18th Apr Late | chess.com INT | 10 | Marcin Sieciechowicz | Lazaro Lorenzo De La Riva | 0-1 | 73 | Open |
| 572 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 9 | Marcin Sieciechowicz | David W L Howell | 0-1 | 46 | Open |
| 573 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 8 | Dmitry Goltsev | Marcin Sieciechowicz | 1/2-1/2 | 28 | Open |
| 574 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 7 | Marcin Sieciechowicz | Jack Mizzi | 1-0 | 37 | Open |
| 575 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 6 | Sergei Lobanov | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 576 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 5 | Marcin Sieciechowicz | Vladimir Mikhalsky | 1-0 | 80 | Open |
| 577 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 4 | Dmitry Minko | Marcin Sieciechowicz | 0-1 | 71 | Open |
| 578 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 3 | Marcin Sieciechowicz | Guillermo Baches Garcia | 1/2-1/2 | 52 | Open |
| 579 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 2 | Aram Hakobyan | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 580 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 1 | Marcin Sieciechowicz | Ieuan C Ward | 1-0 | 42 | Open |
| 581 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 11 | Marcin Sieciechowicz | Przemyslaw Liwak | 1/2-1/2 | 28 | Open |
| 582 | 2023-04-11 | Titled Tue 11th Apr Late | chess.com INT | 10 | Amir Hadzovic | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 583 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 9 | Leandro Jimenez Jimenez | Marcin Sieciechowicz | 0-1 | 31 | Open |
| 584 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 9 | Marcin Sieciechowicz | Dmitrij Kollars | 0-1 | 60 | Open |
| 585 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 8 | Marcin Sieciechowicz | Alexandra Shvedova | 1-0 | 45 | Open |
| 586 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 8 | Marcin Sieciechowicz | Denis Makhnev | 0-1 | 42 | Open |
| 587 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 7 | Sergey Kim | Marcin Sieciechowicz | 0-1 | 58 | Open |
| 588 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 7 | Zaur Mammadov | Marcin Sieciechowicz | 1/2-1/2 | 98 | Open |
| 589 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 6 | Marcin Sieciechowicz | Attila Jr. Forgacs | 1-0 | 26 | Open |
| 590 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 6 | Marcin Sieciechowicz | Alexei Gubajdullin | 1-0 | 44 | Open |
| 591 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 5 | Marcin Sieciechowicz | Ruslan Kashtanov | 1-0 | 43 | Open |
| 592 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 5 | Przemyslaw Liwak | Marcin Sieciechowicz | 1/2-1/2 | 57 | Open |
| 593 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 4 | Florian Gatterer | Marcin Sieciechowicz | 0-1 | 56 | Open |
| 594 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 4 | Marcin Sieciechowicz | Patrik Aalto | 1-0 | 45 | Open |
| 595 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 3 | Nguyen Hong Nhung | Marcin Sieciechowicz | 1-0 | 60 | Open |
| 596 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 3 | Marcin Sieciechowicz | Ekaterina Goltseva | 0-1 | 53 | Open |
| 597 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 2 | Vladimir Fedoseev | Marcin Sieciechowicz | 1-0 | 28 | Open |
| 598 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 2 | Marcin Sieciechowicz | Tomasz Mika | 1-0 | 36 | Open |
| 599 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 1 | Marcin Sieciechowicz | Gordon McNeill | 1-0 | 44 | Open |
| 600 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 1 | Andrzej Krzywda | Marcin Sieciechowicz | 1-0 | 53 | Open |
| 601 | 2023-04-04 | Titled Tue 4th Apr Early | chess.com INT | 10 | Oleg Terletsky | Marcin Sieciechowicz | 1-0 | 6 | Open |
| 602 | 2023-04-04 | Titled Tue 4th Apr Late | chess.com INT | 10 | Marcin Sieciechowicz | Arystanbek Urazayev | 0-1 | 33 | Open |
| 603 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 8 | Marcin Sieciechowicz | Zbigniew Pakleza | 0-1 | 30 | Open |
| 604 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 7 | Marcos Vinicius Torsani Pires | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 605 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 6 | Marcin Sieciechowicz | Jens Hirneise | 1/2-1/2 | 21 | Open |
| 606 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 5 | Marcin Sieciechowicz | Zaur Mammadov | 0-1 | 34 | Open |
| 607 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 4 | Garrett L Smith | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 608 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 3 | Kamil Dzida | Marcin Sieciechowicz | 0-1 | 7 | Open |
| 609 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 2 | Marcin Sieciechowicz | Maxime Vachier-Lagrave | 0-1 | 25 | Open |
| 610 | 2023-03-28 | Titled Tue 28th Mar Late | chess.com INT | 1 | Khanya Mazibuko | Marcin Sieciechowicz | 0-1 | 0 | Open |
| 611 | 2023-02-28 | Titled Tue 28th Feb Late | chess.com INT | 7 | Marcin Sieciechowicz | Jake Kleiman | 0-1 | 22 | Open |
| 612 | 2023-02-28 | Titled Tue 28th Feb Late | chess.com INT | 6 | Arman Erzhanov | Marcin Sieciechowicz | 1/2-1/2 | 72 | Open |
| 613 | 2023-02-28 | Titled Tue 28th Feb Late | chess.com INT | 5 | Marcin Sieciechowicz | Robert Sanchez | 1-0 | 38 | Open |
| 614 | 2023-02-28 | Titled Tue 28th Feb Late | chess.com INT | 4 | Marcin Sieciechowicz | Daniel Girsh | 0-1 | 41 | Open |
| 615 | 2023-02-28 | Titled Tue 28th Feb Late | chess.com INT | 3 | David Paravyan | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 616 | 2023-02-28 | Titled Tue 28th Feb Late | chess.com INT | 2 | Marcin Sieciechowicz | Fabiano Caruana | 1/2-1/2 | 77 | Open |
| 617 | 2023-02-28 | Titled Tue 28th Feb Late | chess.com INT | 1 | Jaime Vaglio Munoz | Marcin Sieciechowicz | 0-1 | 55 | Open |
| 618 | 2023-02-26 | 2nd Bundesliga Nord 22-23 | Germany GER | 8.4 | Radoslaw Barski | Marcin Sieciechowicz | 1-0 | 54 | Open |
| 619 | 2023-02-25 | 2nd Bundesliga Nord 22-23 | Germany GER | 7.4 | Marcin Sieciechowicz | Magnus Arndt | 0-1 | 74 | Open |
| 620 | 2023-02-22 | 39th Cappelle Open 2023 | Cappelle la Grande FRA | 7.5 | Thomas Beerdsen | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 621 | 2023-02-21 | 39th Cappelle Open 2023 | Cappelle la Grande FRA | 5.3 | Harsha Bharathakoti | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 622 | 2023-02-20 | 39th Cappelle Open 2023 | Cappelle la Grande FRA | 4.2 | Marcin Sieciechowicz | Jakub Kosakowski | 1/2-1/2 | 79 | Open |
| 623 | 2023-02-20 | 39th Cappelle Open 2023 | Cappelle la Grande FRA | 3.8 | Fabian Frey | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 624 | 2023-02-05 | 2nd Bundesliga Nord 22-23 | Germany GER | 6.3 | Sven Joachim | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 625 | 2023-02-04 | 2nd Bundesliga Nord 22-23 | Germany GER | 5.3 | Marcin Sieciechowicz | Stefan, Dr. Walter | 1-0 | 66 | Open |
| 626 | 2023-01-04 | 33rd Cracovia Open A | Krakow POL | 9.4 | Marcin Sieciechowicz | Krzysztof Szczurek | 1/2-1/2 | 43 | Open |
| 627 | 2023-01-03 | 33rd Cracovia Open A | Krakow POL | 8.5 | Franciszek Sernecki | Marcin Sieciechowicz | 0-1 | 69 | Open |
| 628 | 2023-01-02 | 33rd Cracovia Open A | Krakow POL | 7.5 | Marcin Sieciechowicz | Damian Balinski | 1-0 | 27 | Open |
| 629 | 2023-01-02 | 33rd Cracovia Open A | Krakow POL | 6.6 | Tom Meurs | Marcin Sieciechowicz | 1/2-1/2 | 45 | Open |
| 630 | 2022-12-31 | 33rd Cracovia Open A | Krakow POL | 5.5 | Marcin Sieciechowicz | Cristian Fernandez Diaz | 1/2-1/2 | 37 | Open |
| 631 | 2022-12-30 | 33rd Cracovia Open A | Krakow POL | 4.15 | Kemal Bashirov | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 632 | 2022-12-29 | 33rd Cracovia Open A | Krakow POL | 3.25 | Marcin Sieciechowicz | Wojciech Maslanka | 1-0 | 24 | Open |
| 633 | 2022-12-28 | 33rd Cracovia Open A | Krakow POL | 2.13 | Jerzy Kyc | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 634 | 2022-12-27 | 33rd Cracovia Open A | Krakow POL | 1.5 | Marcin Sieciechowicz | Konrad Bus | 1/2-1/2 | 101 | Open |
| 635 | 2022-11-27 | 2nd Bundesliga Nord 22-23 | Germany GER | 4.5 | Philipp Balcerak | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 636 | 2022-11-26 | 2nd Bundesliga Nord 22-23 | Germany GER | 3.5 | Marcin Sieciechowicz | Benedict Krause | 1/2-1/2 | 25 | Open |
| 637 | 2022-11-13 | 12th Dziedzica Mem 2022 | Trzcianka POL | 9.1 | Marcin Sieciechowicz | Pawel Teclaf | 1-0 | 23 | Open |
| 638 | 2022-11-13 | 12th Dziedzica Mem 2022 | Trzcianka POL | 8.3 | Michal Krasenkow | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 639 | 2022-11-13 | 12th Dziedzica Mem 2022 | Trzcianka POL | 7.5 | Marcin Sieciechowicz | Jakub Luberanski | 1-0 | 80 | Open |
| 640 | 2022-11-13 | 12th Dziedzica Mem 2022 | Trzcianka POL | 6.7 | Piotr Jagodzinski | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 641 | 2022-11-13 | 12th Dziedzica Mem 2022 | Trzcianka POL | 5.9 | Marcin Sieciechowicz | Bartosz Przybylski | 1-0 | 50 | Open |
| 642 | 2022-11-13 | 12th Dziedzica Mem 2022 | Trzcianka POL | 4.1 | Marek Zakrzewski | Marcin Sieciechowicz | 1-0 | 55 | Open |
| 643 | 2022-10-23 | 2nd Bundesliga Nord 22-23 | Germany GER | 2.5 | Marcin Sieciechowicz | Clemens, Dr. Rietze | 0-1 | 52 | Open |
| 644 | 2022-10-22 | 2nd Bundesliga Nord 22-23 | Germany GER | 1.5 | Kamil Stachowiak | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 645 | 2022-09-11 | TCh-POL 1st League 2022 | Sypniewo POL | 9.8 | Andrzej Krzywda | Marcin Sieciechowicz | 0-1 | 66 | Open |
| 646 | 2022-09-10 | TCh-POL 1st League 2022 | Sypniewo POL | 8.6 | Marcin Sieciechowicz | Kosma Pacan-Milej | 1-0 | 34 | Open |
| 647 | 2022-09-09 | TCh-POL 1st League 2022 | Sypniewo POL | 7.4 | Antoni Kozak | Marcin Sieciechowicz | 1-0 | 51 | Open |
| 648 | 2022-09-08 | TCh-POL 1st League 2022 | Sypniewo POL | 6.5 | Marcin Sieciechowicz | Lukasz Nowak | 0-1 | 61 | Open |
| 649 | 2022-09-07 | TCh-POL 1st League 2022 | Sypniewo POL | 5.7 | Krzysztof Chojnacki | Marcin Sieciechowicz | 1/2-1/2 | 25 | Open |
| 650 | 2022-09-06 | TCh-POL 1st League 2022 | Sypniewo POL | 4.7 | Marcin Sieciechowicz | Maciej Klekowski | 1/2-1/2 | 19 | Open |
| 651 | 2022-09-05 | TCh-POL 1st League 2022 | Sypniewo POL | 3.1 | Jacek Stachanczyk | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 652 | 2022-09-04 | TCh-POL 1st League 2022 | Sypniewo POL | 2.7 | Marcin Sieciechowicz | Jan Klimkowski | 1-0 | 47 | Open |
| 653 | 2022-09-03 | TCh-POL 1st League 2022 | Sypniewo POL | 1.2 | Mykhaylo Oleksiyenko | Marcin Sieciechowicz | 1-0 | 65 | Open |
| 654 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 9.8 | Marcin Sieciechowicz | Boris Dr Lanin | 1/2-1/2 | 53 | Open |
| 655 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 8.6 | Miroslaw Grabarczyk | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 656 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 7.8 | Maurycy Zerebiec | Marcin Sieciechowicz | 1/2-1/2 | 59 | Open |
| 657 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 6.3 | Marcin Sieciechowicz | Igor Kowalski | 0-1 | 39 | Open |
| 658 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 5.5 | Marcin Sieciechowicz | Alexander Zubarev | 1-0 | 41 | Open |
| 659 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 4.9 | Tomasz Skrzyczek | Marcin Sieciechowicz | 0-1 | 41 | Open |
| 660 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 3.17 | Marcin Sieciechowicz | Grzegorz Latacz | 1-0 | 30 | Open |
| 661 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 2.6 | Michal Demski | Marcin Sieciechowicz | 1/2-1/2 | 108 | Open |
| 662 | 2022-07-30 | Adolf Anderssen Mem 2022 | Wroclaw POL | 1.6 | Marcin Sieciechowicz | Artem Tsviatko | 1-0 | 31 | Open |
| 663 | 2022-07-25 | Warsaw Chess Open A 2022 | Warsaw POL | 9.2 | Artem Padalka | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 664 | 2022-07-24 | Warsaw Chess Open A 2022 | Warsaw POL | 8.5 | Marcin Sieciechowicz | Jha Sriram | 1-0 | 37 | Open |
| 665 | 2022-07-23 | Warsaw Chess Open A 2022 | Warsaw POL | 7.1 | Igor Janik | Marcin Sieciechowicz | 1/2-1/2 | 20 | Open |
| 666 | 2022-07-23 | Warsaw Chess Open A 2022 | Warsaw POL | 6.7 | Marcin Sieciechowicz | Jakub Chyzy | 1-0 | 53 | Open |
| 667 | 2022-07-22 | Warsaw Chess Open A 2022 | Warsaw POL | 5.2 | Kosma Pacan-Milej | Marcin Sieciechowicz | 1-0 | 37 | Open |
| 668 | 2022-07-21 | Warsaw Chess Open A 2022 | Warsaw POL | 4.4 | Marcin Sieciechowicz | Iwo Karolczuk | 1-0 | 35 | Open |
| 669 | 2022-07-20 | Warsaw Chess Open A 2022 | Warsaw POL | 3.7 | Flawian Krawczyk | Marcin Sieciechowicz | 0-1 | 52 | Open |
| 670 | 2022-07-19 | Warsaw Chess Open A 2022 | Warsaw POL | 2.15 | Marcin Sieciechowicz | Oissine Murchadha | 1-0 | 35 | Open |
| 671 | 2022-07-18 | Warsaw Chess Open A 2022 | Warsaw POL | 1.8 | Aleksander Choroszej | Marcin Sieciechowicz | 1/2-1/2 | 42 | Open |
| 672 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 9.11 | Patryk Chylewski | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 673 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 8.19 | Marcin Sieciechowicz | Ewa Rudnicka | 1-0 | 41 | Open |
| 674 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 7.22 | Marcin Sieciechowicz | Marta Bartel | 1-0 | 29 | Open |
| 675 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 6.8 | Piotr Brodowski | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 676 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 5.26 | Marcin Sieciechowicz | Adam Jedrusik | 1-0 | 38 | Open |
| 677 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 4.28 | Michal Mirski | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 678 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 11.11 | Michal Olszewski | Marcin Sieciechowicz | 0-1 | 69 | Open |
| 679 | 2022-07-08 | Jana Maciei Mem 2022 | Warsaw POL | 10.5 | Marcin Sieciechowicz | Marcin Dziuba | 0-1 | 45 | Open |
| 680 | 2022-07-04 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 10.1 | Franciszek Sernecki | Marcin Sieciechowicz | 0-1 | 55 | Open |
| 681 | 2022-07-03 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 9.9 | Marcin Sieciechowicz | Sergei Ulasevich | 1/2-1/2 | 66 | Open |
| 682 | 2022-07-02 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 8.9 | Kacper Kacprzak | Marcin Sieciechowicz | 1/2-1/2 | 16 | Open |
| 683 | 2022-07-01 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 7.9 | Marcin Sieciechowicz | Valentyn Prokofiev | 1/2-1/2 | 48 | Open |
| 684 | 2022-06-30 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 6.4 | Pawel Czarnota | Marcin Sieciechowicz | 1-0 | 59 | Open |
| 685 | 2022-06-29 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 5.3 | Marcin Sieciechowicz | Lukasz Licznerski | 1/2-1/2 | 39 | Open |
| 686 | 2022-06-28 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 4.5 | Igor Janik | Marcin Sieciechowicz | 1/2-1/2 | 55 | Open |
| 687 | 2022-06-27 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 3.9 | Karol Kacprzak | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 688 | 2022-06-26 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 2.1 | Marcin Sieciechowicz | Jacek Tomczak | 1/2-1/2 | 27 | Open |
| 689 | 2022-06-25 | Bydgoszcz Open A 2022 | Bydgoszcz POL | 1.11 | Marcin Sieciechowicz | Rohan Shan Tze Navaratnam | 1-0 | 55 | Open |
| 690 | 2022-05-06 | Swietokrzyskie IM 2022 | Zagnansk POL | 9.1 | Mikulas Manik | Marcin Sieciechowicz | 1/2-1/2 | 16 | Open |
| 691 | 2022-05-05 | Swietokrzyskie IM 2022 | Zagnansk POL | 8.1 | Marcin Sieciechowicz | Valentyn Prokofiev | 0-1 | 39 | Open |
| 692 | 2022-05-04 | Swietokrzyskie IM 2022 | Zagnansk POL | 7.1 | Jan Malek | Marcin Sieciechowicz | 0-1 | 52 | Open |
| 693 | 2022-05-04 | Swietokrzyskie IM 2022 | Zagnansk POL | 6.1 | Marcin Sieciechowicz | Martyna Wikar | 1/2-1/2 | 86 | Open |
| 694 | 2022-05-03 | Swietokrzyskie IM 2022 | Zagnansk POL | 5.1 | Patryk Chylewski | Marcin Sieciechowicz | 1/2-1/2 | 45 | Open |
| 695 | 2022-05-02 | Swietokrzyskie IM 2022 | Zagnansk POL | 4.1 | Marcin Sieciechowicz | Andrzej Krzywda | 1/2-1/2 | 74 | Open |
| 696 | 2022-05-01 | Swietokrzyskie IM 2022 | Zagnansk POL | 3.1 | Michael Kotyk | Marcin Sieciechowicz | 0-1 | 76 | Open |
| 697 | 2022-05-01 | Swietokrzyskie IM 2022 | Zagnansk POL | 2.1 | Marcin Sieciechowicz | Anatole Vlachos | 1/2-1/2 | 61 | Open |
| 698 | 2022-04-30 | Swietokrzyskie IM 2022 | Zagnansk POL | 1.1 | Lukasz Nowak | Marcin Sieciechowicz | 1/2-1/2 | 51 | Open |
| 699 | 2022-03-12 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 9.1 | Marcin Sieciechowicz | Piotr Murdzia | 1-0 | 42 | Open |
| 700 | 2022-03-12 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 8.1 | Marcin Sieciechowicz | Marcin Molenda | 1/2-1/2 | 44 | Open |
| 701 | 2022-03-12 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 7.1 | Piotr Brodowski | Marcin Sieciechowicz | 1-0 | 52 | Open |
| 702 | 2022-03-12 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 6.1 | Marcin Sieciechowicz | Bartosz Socko | 0-1 | 38 | Open |
| 703 | 2022-03-12 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 10.1 | Jacek Tomczak | Marcin Sieciechowicz | 1/2-1/2 | 24 | Open |
| 704 | 2022-03-11 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 5.1 | Marcin Sieciechowicz | Jacek Tomczak | 0-1 | 63 | Open |
| 705 | 2022-03-11 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 4.1 | Piotr Murdzia | Marcin Sieciechowicz | 1-0 | 53 | Open |
| 706 | 2022-03-11 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 3.1 | Marcin Molenda | Marcin Sieciechowicz | 1/2-1/2 | 29 | Open |
| 707 | 2022-03-11 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 2.1 | Marcin Sieciechowicz | Piotr Brodowski | 1-0 | 35 | Open |
| 708 | 2022-03-11 | Polish Rapid Ekstraliga A | Bydgoszcz POL | 1.1 | Bartosz Socko | Marcin Sieciechowicz | 1/2-1/2 | 50 | Open |
| 709 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 9 | Marcin Sieciechowicz | Nikolai Vlassov | 1/2-1/2 | 51 | Open |
| 710 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 8 | Aleksandr Rakhmanov | Marcin Sieciechowicz | 1-0 | 28 | Open |
| 711 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 7 | Marcin Sieciechowicz | Onno Elgersma | 1-0 | 75 | Open |
| 712 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 6 | Mergen Kakabayev | Marcin Sieciechowicz | 0-1 | 25 | Open |
| 713 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 5 | Marcin Sieciechowicz | Arash Tahbaz | 0-1 | 40 | Open |
| 714 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 4 | Marcin Sieciechowicz | Pavel Chernomordik | 1-0 | 29 | Open |
| 715 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 3 | Jean Marco Cruz Mendez | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 716 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 2 | Marcin Sieciechowicz | Robert Sanchez | 1-0 | 35 | Open |
| 717 | 2021-12-21 | Titled Tuesday 21st Dec | chess.com INT | 1 | Richard Polaczek | Marcin Sieciechowicz | 1-0 | 50 | Open |
| 718 | 2021-12-01 | 1st Resovia Chess Masters | Krakow POL | 7.2 | Marcin Sieciechowicz | Mikolaj Wojcik | 1-0 | 28 | Open |
| 719 | 2021-12-01 | 1st Resovia Chess Masters | Krakow POL | 6.3 | Kacper Majek | Marcin Sieciechowicz | 0-1 | 38 | Open |
| 720 | 2021-11-30 | 1st Resovia Chess Masters | Krakow POL | 5.3 | Marcin Sieciechowicz | Tobias Kuegel | 1-0 | 1 | Open |
| 721 | 2021-11-30 | 1st Resovia Chess Masters | Krakow POL | 4.2 | Lubomir Mikhaletz | Marcin Sieciechowicz | 1/2-1/2 | 54 | Open |
| 722 | 2021-11-29 | 1st Resovia Chess Masters | Krakow POL | 3.4 | Marcin Sieciechowicz | Dmitriy Kushko | 1/2-1/2 | 54 | Open |
| 723 | 2021-11-29 | 1st Resovia Chess Masters | Krakow POL | 2.1 | Artur Chowaniec | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 724 | 2021-11-28 | 1st Resovia Chess Masters | Krakow POL | 1.4 | Arkadiusz Babiarz | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 725 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 9 | Marcin Sieciechowicz | Ivan G Stankovic | 1-0 | 18 | Open |
| 726 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 8 | Vasif Durarbayli | Marcin Sieciechowicz | 1/2-1/2 | 38 | Open |
| 727 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 7 | Marcin Sieciechowicz | Ilja Haitin | 1-0 | 46 | Open |
| 728 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 6 | Kirill Shubin | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 729 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 5 | Marcin Sieciechowicz | Michal Redzisz | 1-0 | 82 | Open |
| 730 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 4 | Viktor Berezin | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 731 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 3 | Marcin Sieciechowicz | Christopher Woojin Yoo | 0-1 | 35 | Open |
| 732 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 2 | Oleg Boricsev | Marcin Sieciechowicz | 1/2-1/2 | 50 | Open |
| 733 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 1 | Marcin Sieciechowicz | Asghar Golizadeh | 1-0 | 48 | Open |
| 734 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 11 | Marcin Sieciechowicz | Jerzy Jesus Perez Leiva | 1-0 | 61 | Open |
| 735 | 2021-11-16 | Titled Tuesday 16th Nov | chess.com INT | 10 | Alfonso Llorente Zaro | Marcin Sieciechowicz | 1-0 | 67 | Open |
| 736 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 9 | Pawel Grabowski | Marcin Sieciechowicz | 1-0 | 34 | Open |
| 737 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 8 | Marcin Sieciechowicz | Nikolai Gritsenko | 0-1 | 47 | Open |
| 738 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 7 | Marcin Sieciechowicz | Marcos Vinicius Torsani Pires | 1-0 | 63 | Open |
| 739 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 6 | Maria Gevorgyan | Marcin Sieciechowicz | 0-1 | 51 | Open |
| 740 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 5 | Marcin Sieciechowicz | Aleksandar Topalov | 1/2-1/2 | 64 | Open |
| 741 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 4 | Vugar Manafov | Marcin Sieciechowicz | 1-0 | 62 | Open |
| 742 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 3 | Sargis Sargissyan | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 743 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 2 | Marcin Sieciechowicz | Conrad Holt | 0-1 | 38 | Open |
| 744 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 1 | Marcin Sieciechowicz | Bristy Mukherjee | 1-0 | 29 | Open |
| 745 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 11 | Marcin Sieciechowicz | Luca Suvorov | 1-0 | 70 | Open |
| 746 | 2021-09-28 | Titled Tuesday 28th Sept | chess.com INT | 10 | Galina Novikova | Marcin Sieciechowicz | 0-1 | 37 | Open |
| 747 | 2021-09-19 | PGNiG POL Bydgoszcz Blitz | Bydgoszcz POL | 9.7 | Lukasz Luba | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 748 | 2021-09-19 | PGNiG POL Bydgoszcz Blitz | Bydgoszcz POL | 8.1 | Marcin Sieciechowicz | Michal Karpus | 1-0 | 24 | Open |
| 749 | 2021-09-19 | PGNiG POL Bydgoszcz Blitz | Bydgoszcz POL | 11.6 | Krzysztof Jakubowski | Marcin Sieciechowicz | 1-0 | 36 | Open |
| 750 | 2021-09-18 | PGNiG Polish Bydgoszcz Pr | Bydgoszcz POL | 9.19 | Sebastian Poltorak | Marcin Sieciechowicz | 1-0 | 34 | Open |
| 751 | 2021-09-18 | PGNiG Polish Bydgoszcz Pr | Bydgoszcz POL | 8.11 | Marcin Sieciechowicz | Arkadiusz Bebel | 1/2-1/2 | 54 | Open |
| 752 | 2021-09-18 | PGNiG Polish Bydgoszcz Pr | Bydgoszcz POL | 7.18 | Daniel Sanz Wawer | Marcin Sieciechowicz | 0-1 | 53 | Open |
| 753 | 2021-09-18 | PGNiG Polish Bydgoszcz Pr | Bydgoszcz POL | 5.14 | Kosma Pacan-Milej | Marcin Sieciechowicz | 1-0 | 62 | Open |
| 754 | 2021-09-18 | PGNiG Polish Bydgoszcz Pr | Bydgoszcz POL | 3.17 | Kacper Kacprzak | Marcin Sieciechowicz | 1/2-1/2 | 48 | Open |
| 755 | 2021-09-18 | PGNiG Polish Bydgoszcz Pr | Bydgoszcz POL | 2.19 | Marcin Sieciechowicz | Aleksander Kielbratowski | 1-0 | 20 | Open |
| 756 | 2021-09-18 | PGNiG Polish Bydgoszcz Pr | Bydgoszcz POL | 1.2 | Krzysztof Staszewski | Marcin Sieciechowicz | 0-1 | 41 | Open |
| 757 | 2021-09-12 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 9.3 | Bartlomiej Niedbala | Marcin Sieciechowicz | 1/2-1/2 | 67 | Open |
| 758 | 2021-09-11 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 8.2 | Marcin Sieciechowicz | Igor Kovalenko | 1/2-1/2 | 88 | Open |
| 759 | 2021-09-10 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 7.5 | Marcin Sieciechowicz | Jakub Kosakowski | 1/2-1/2 | 43 | Open |
| 760 | 2021-09-09 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 6.6 | Mikolaj Tomczak | Marcin Sieciechowicz | 1/2-1/2 | 5 | Open |
| 761 | 2021-09-08 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 5.2 | Marcin Sieciechowicz | Mateusz Paszewski | 1/2-1/2 | 28 | Open |
| 762 | 2021-09-07 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 4.6 | Kamil Stachowiak | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 763 | 2021-09-06 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 3.6 | Marcin Sieciechowicz | Nazar Ustianovich | 1/2-1/2 | 27 | Open |
| 764 | 2021-09-05 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 2.1 | Jacek Tomczak | Marcin Sieciechowicz | 0-1 | 60 | Open |
| 765 | 2021-09-04 | TCh-POL 1st League 2021 | Szklarska Poreba POL | 1.6 | Marcin Sieciechowicz | Mateusz Bobula | 1-0 | 42 | Open |
| 766 | 2021-08-20 | 2nd Tras-os-Montes Open | Braganca POR | 3.4 | Max Warmerdam | Marcin Sieciechowicz | 1-0 | 36 | Open |
| 767 | 2021-08-10 | 1st Merlin Lezajsk Master | Lezajsk POL | 9.5 | Marcin Sieciechowicz | Lukasz Licznerski | 1/2-1/2 | 46 | Open |
| 768 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 9.2 | Marcin Sieciechowicz | Stepan Zilka | 1-0 | 44 | Open |
| 769 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 8.2 | Daniel Trybus | Marcin Sieciechowicz | 1/2-1/2 | 34 | Open |
| 770 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 7.3 | Marcin Sieciechowicz | Arkadiusz Babiarz | 1-0 | 29 | Open |
| 771 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 6.2 | Lukasz Licznerski | Marcin Sieciechowicz | 1/2-1/2 | 41 | Open |
| 772 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 5.5 | Barbara Trybowska | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 773 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 4.2 | Marcin Sieciechowicz | Vladimir Sergeev | 1-0 | 43 | Open |
| 774 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 3.1 | Baadur Jobava | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 775 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 2.6 | Marcin Sieciechowicz | Jakub Owoc | 1-0 | 31 | Open |
| 776 | 2021-08-10 | 1st Merlin Lezajsk Blitz | Lezajsk POL | 1.6 | Konrad Cwieka | Marcin Sieciechowicz | 0-1 | 35 | Open |
| 777 | 2021-08-09 | 1st Merlin Lezajsk Master | Lezajsk POL | 8.3 | Vojtech Zwardon | Marcin Sieciechowicz | 1-0 | 79 | Open |
| 778 | 2021-08-08 | 1st Merlin Lezajsk Master | Lezajsk POL | 7.2 | Baadur Jobava | Marcin Sieciechowicz | 1/2-1/2 | 47 | Open |
| 779 | 2021-08-08 | 1st Merlin Lezajsk Master | Lezajsk POL | 6.3 | Marcin Sieciechowicz | Stepan Zilka | 1/2-1/2 | 15 | Open |
| 780 | 2021-08-07 | 1st Merlin Lezajsk Master | Lezajsk POL | 5.6 | Adrian Miasik | Marcin Sieciechowicz | 0-1 | 63 | Open |
| 781 | 2021-08-06 | 1st Merlin Lezajsk Master | Lezajsk POL | 4.5 | Marcin Sieciechowicz | Tobias Kuegel | 1/2-1/2 | 31 | Open |
| 782 | 2021-08-06 | 1st Merlin Lezajsk Master | Lezajsk POL | 3.6 | Lubomir Mikhaletz | Marcin Sieciechowicz | 1/2-1/2 | 73 | Open |
| 783 | 2021-08-05 | 1st Merlin Lezajsk Master | Lezajsk POL | 2.4 | Marcin Sieciechowicz | Vladimir Sergeev | 1/2-1/2 | 26 | Open |
| 784 | 2021-08-04 | 1st Merlin Lezajsk Master | Lezajsk POL | 1.8 | Szymon Gaj | Marcin Sieciechowicz | 1/2-1/2 | 57 | Open |
| 785 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 9.3 | Marcin Sieciechowicz | Zbigniew Pakleza | 1/2-1/2 | 32 | Open |
| 786 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 8.5 | Christian Troyke | Marcin Sieciechowicz | 0-1 | 49 | Open |
| 787 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 7.7 | Marcin Sieciechowicz | Lennard Den Boer | 1-0 | 35 | Open |
| 788 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 6.3 | Oskar Wieczorek | Marcin Sieciechowicz | 1-0 | 39 | Open |
| 789 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 5.3 | Dariusz Szoen | Marcin Sieciechowicz | 1/2-1/2 | 32 | Open |
| 790 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 4.1 | Marcin Sieciechowicz | Erik Van den Doel | 1-0 | 41 | Open |
| 791 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 3.9 | Marcin Sieciechowicz | Emil Osinski | 1-0 | 46 | Open |
| 792 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 2.9 | Malgorzata Kucypera | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 793 | 2021-07-31 | Adolf Anderssen Mem 2021 | Wroclaw POL | 1.9 | Marcin Sieciechowicz | Mateusz Bednarczyk | 1-0 | 23 | Open |
| 794 | 2021-07-26 | Warsaw Chess Open A 2021 | Warsaw POL | 9.2 | Paulius Pultinevicius | Marcin Sieciechowicz | 1-0 | 52 | Open |
| 795 | 2021-07-25 | Warsaw Chess Open A 2021 | Warsaw POL | 8.7 | Marcin Sieciechowicz | Oliwia Kiolbasa | 1-0 | 47 | Open |
| 796 | 2021-07-24 | Warsaw Chess Open A 2021 | Warsaw POL | 7.9 | Arvin Rasti | Marcin Sieciechowicz | 1/2-1/2 | 19 | Open |
| 797 | 2021-07-24 | Warsaw Chess Open A 2021 | Warsaw POL | 6.14 | Marcin Sieciechowicz | Ilya Razdolski | 1-0 | 32 | Open |
| 798 | 2021-07-23 | Warsaw Chess Open A 2021 | Warsaw POL | 5.9 | Kacper Karwowski | Marcin Sieciechowicz | 1/2-1/2 | 35 | Open |
| 799 | 2021-07-22 | Warsaw Chess Open A 2021 | Warsaw POL | 4.14 | Marcin Sieciechowicz | Barbara Goraj | 1-0 | 56 | Open |
| 800 | 2021-07-21 | Warsaw Chess Open A 2021 | Warsaw POL | 3.12 | Michal Goslawski | Marcin Sieciechowicz | 1/2-1/2 | 32 | Open |
| 801 | 2021-07-20 | Warsaw Chess Open A 2021 | Warsaw POL | 2.16 | Marcin Sieciechowicz | Hyo Lee | 1/2-1/2 | 41 | Open |
| 802 | 2021-07-19 | Warsaw Chess Open A 2021 | Warsaw POL | 1.11 | Magdalena Harazinska | Marcin Sieciechowicz | 1/2-1/2 | 81 | Open |
| 803 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 9 | Iulian-Ioan Taras | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 804 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 7 | Grigory Seletsky | Marcin Sieciechowicz | 1/2-1/2 | 67 | Open |
| 805 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 6 | Marcin Sieciechowicz | Edwin Urbina Quiroz | 1-0 | 26 | Open |
| 806 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 5 | Olga Karavaeva | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 807 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 4 | Marcin Sieciechowicz | Vlada Sviridova | 0-1 | 35 | Open |
| 808 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 3 | Qing Aun Lee | Marcin Sieciechowicz | 1-0 | 44 | Open |
| 809 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 2 | Marcin Sieciechowicz | Tamir Nabaty | 0-1 | 58 | Open |
| 810 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 1 | Dorina Demeter | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 811 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 11 | Narmin Khalafova | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 812 | 2021-07-06 | Titled Tuesday 6th July | chess.com INT | 10 | Marcin Sieciechowicz | Michael Bon | 0-1 | 42 | Open |
| 813 | 2021-07-04 | 9th POL-HUN Rapid 2021 | Katowice POL | 8.7 | Jan Golenia | Marcin Sieciechowicz | 1/2-1/2 | 91 | Open |
| 814 | 2021-07-04 | 9th POL-HUN Rapid 2021 | Katowice POL | 7.2 | Marcin Sieciechowicz | Maciej Klekowski | 0-1 | 42 | Open |
| 815 | 2021-07-04 | 9th POL-HUN Rapid 2021 | Katowice POL | 6.3 | Daniel Sadzikowski | Marcin Sieciechowicz | 1/2-1/2 | 81 | Open |
| 816 | 2021-07-03 | 9th POL-HUN Rapid 2021 | Katowice POL | 5.5 | Marcin Sieciechowicz | Elena Krasenkowa | 1-0 | 34 | Open |
| 817 | 2021-07-03 | 9th POL-HUN Rapid 2021 | Katowice POL | 4.7 | Alicja Sliwicka | Marcin Sieciechowicz | 1/2-1/2 | 78 | Open |
| 818 | 2021-07-03 | 9th POL-HUN Rapid 2021 | Katowice POL | 3.1 | Marcin Sieciechowicz | Dawid Bednarski | 1-0 | 27 | Open |
| 819 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 9 | Marcin Sieciechowicz | Gianmarco Leiva | 0-1 | 29 | Open |
| 820 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 8 | Ivan Ivanisevic | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 821 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 7 | Zachary Tanenbaum | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 822 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 6 | Marcin Sieciechowicz | Read Samadov | 1-0 | 20 | Open |
| 823 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 5 | Mariami Janiashvili | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 824 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 4 | Marcin Sieciechowicz | Alexey Maly | 0-1 | 27 | Open |
| 825 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 3 | Marcin Sieciechowicz | Zbigniew Pakleza | 0-1 | 42 | Open |
| 826 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 2 | Burak Firat | Marcin Sieciechowicz | 0-1 | 63 | Open |
| 827 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 1 | Marcin Sieciechowicz | Marya Kiseljova | 1-0 | 26 | Open |
| 828 | 2021-06-29 | Titled Tuesday 29th June | chess.com INT | 11 | Marcin Sieciechowicz | Sharvesh Deviprasath | 1-0 | 55 | Open |
| 829 | 2021-06-22 | Titled Tuesday 22nd June | chess.com INT | 6 | Darius Viskelis | Marcin Sieciechowicz | 1-0 | 2 | Open |
| 830 | 2021-06-22 | Titled Tuesday 22nd June | chess.com INT | 4 | Marcin Sieciechowicz | Pavel Smirnov | 0-1 | 35 | Open |
| 831 | 2021-06-22 | Titled Tuesday 22nd June | chess.com INT | 3 | Assel Serikbay | Marcin Sieciechowicz | 0-1 | 55 | Open |
| 832 | 2021-06-22 | Titled Tuesday 22nd June | chess.com INT | 2 | Marcin Sieciechowicz | Hui Li | 1-0 | 36 | Open |
| 833 | 2021-06-22 | Titled Tuesday 22nd June | chess.com INT | 1 | Isaac Wiebe | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 834 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 9 | Olga Karavaeva | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 835 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 8 | Ryan W Porter | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 836 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 7 | Marcin Sieciechowicz | Luca Jr Moroni | 0-1 | 48 | Open |
| 837 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 6 | Marcin Sieciechowicz | Nderim Saraci | 1-0 | 88 | Open |
| 838 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 5 | Roman Yanchenko | Marcin Sieciechowicz | 1/2-1/2 | 50 | Open |
| 839 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 4 | Pavel Y. Politov | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 840 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 3 | Marcin Sieciechowicz | Nadya Toncheva | 1/2-1/2 | 53 | Open |
| 841 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 1 | Marcin Sieciechowicz | Jesper Morch Lauridsen | 0-1 | 33 | Open |
| 842 | 2021-06-08 | Titled Tuesday 8th June | chess.com INT | 11 | Marcin Sieciechowicz | Vjacheslav Weetik | 1-0 | 50 | Open |
| 843 | 2021-06-06 | Malopolska Championships | Krakow POL | 7.2 | Marcin Sieciechowicz | Mieszko Mis | 1/2-1/2 | 26 | Open |
| 844 | 2021-06-05 | Malopolska Championships | Krakow POL | 6.3 | Bernhard Sinz | Marcin Sieciechowicz | 1/2-1/2 | 18 | Open |
| 845 | 2021-06-05 | Malopolska Championships | Krakow POL | 5.8 | Tymon Czernek | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 846 | 2021-06-04 | Malopolska Championships | Krakow POL | 4.4 | Marcin Sieciechowicz | Jakub Suder | 1/2-1/2 | 22 | Open |
| 847 | 2021-06-04 | Malopolska Championships | Krakow POL | 3.8 | Marcin Sieciechowicz | Ryszard Kasperek | 1-0 | 42 | Open |
| 848 | 2021-06-03 | Malopolska Championships | Krakow POL | 2.9 | Katarzyna Dwilewicz | Marcin Sieciechowicz | 1/2-1/2 | 66 | Open |
| 849 | 2021-06-03 | Malopolska Championships | Krakow POL | 1.5 | Marcin Sieciechowicz | Arkadiusz Kaczmarek | 1/2-1/2 | 26 | Open |
| 850 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 8 | Marcin Sieciechowicz | Yvain Bruned | 1-0 | 60 | Open |
| 851 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 7 | Agoston Juhasz | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 852 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 6 | Marcin Sieciechowicz | Sergey Shtyka | 0-1 | 51 | Open |
| 853 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 5 | Hipolito Asis Gargatagli | Marcin Sieciechowicz | 1-0 | 52 | Open |
| 854 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 3 | Artyom Timofeev | Marcin Sieciechowicz | 1-0 | 64 | Open |
| 855 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 2 | Marcin Sieciechowicz | Steven Zierk | 1/2-1/2 | 69 | Open |
| 856 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 1 | Natasha Berdychevskaya | Marcin Sieciechowicz | 0-1 | 41 | Open |
| 857 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 11 | Marcin Sieciechowicz | Cem Kaan Gokerkan | 0-1 | 33 | Open |
| 858 | 2021-06-01 | Titled Tuesday 1st June | chess.com INT | 10 | Marcin Sieciechowicz | Gregory Shahade | 1-0 | 45 | Open |
| 859 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 9 | Marcin Sieciechowicz | Umid Aslanov | 1-0 | 28 | Open |
| 860 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 8 | Aziz Mert Erdogdu | Marcin Sieciechowicz | 1-0 | 46 | Open |
| 861 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 7 | Marcin Sieciechowicz | Evgeny Degtiarev | 1-0 | 31 | Open |
| 862 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 6 | Vasiliy Korchmar | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 863 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 5 | Alvaro Alves de Almeida Junior | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 864 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 4 | Marcin Sieciechowicz | Yinn Long Wong | 0-1 | 28 | Open |
| 865 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 3 | Pablo Salinas Herrera | Marcin Sieciechowicz | 1-0 | 18 | Open |
| 866 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 2 | Marcin Sieciechowicz | Alen Yeremyan | 1-0 | 69 | Open |
| 867 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 1 | Eduardo Muzzi | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 868 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 11 | Marcin Sieciechowicz | Rameshbabu Vaishali | 0-1 | 55 | Open |
| 869 | 2021-05-18 | Titled Tuesday 18th May | chess.com INT | 10 | Alexandros Papasimakopoulos | Marcin Sieciechowicz | 0-1 | 37 | Open |
| 870 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 9 | Marcin Sieciechowicz | Joran Aulin-Jansson | 1-0 | 26 | Open |
| 871 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 7 | Marcin Sieciechowicz | Andres Carrasco Miranda | 1-0 | 16 | Open |
| 872 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 5 | Pavel-Alexandru Nastore | Marcin Sieciechowicz | 0-1 | 26 | Open |
| 873 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 4 | Marcin Sieciechowicz | Armin Kekic | 0-1 | 71 | Open |
| 874 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 3 | Lubov Markelova | Marcin Sieciechowicz | 1-0 | 32 | Open |
| 875 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 2 | Marcin Sieciechowicz | Leon Livaic | 0-1 | 56 | Open |
| 876 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 11 | Damian Sliwicki | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 877 | 2021-05-11 | Titled Tuesday 11th May | chess.com INT | 10 | Aaron Bendayan Claros | Marcin Sieciechowicz | 0-1 | 46 | Open |
| 878 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 9 | Vuk Djordjevic | Marcin Sieciechowicz | 1-0 | 23 | Open |
| 879 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 8 | Marcin Sieciechowicz | Luis Enrique Valle Maytin | 1-0 | 72 | Open |
| 880 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 7 | Balazs Csonka | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 881 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 6 | Marcin Sieciechowicz | Pavel Shkapenko | 1/2-1/2 | 28 | Open |
| 882 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 5 | Svetlana Vifleemskaia | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 883 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 4 | Wellington S. Albuquerque Junior | Marcin Sieciechowicz | 0-1 | 69 | Open |
| 884 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 3 | Marcin Sieciechowicz | Anton Zhukov | 0-1 | 55 | Open |
| 885 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 2 | Vignesh N R | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 886 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 1 | Jan Roebers | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 887 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 11 | Marcin Sieciechowicz | Chitlange Sakshi | 1-0 | 58 | Open |
| 888 | 2021-05-04 | Titled Tuesday 4th May | chess.com INT | 10 | Marcin Sieciechowicz | Yedael Stepak | 1-0 | 63 | Open |
| 889 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 9 | Marcin Sieciechowicz | Aziz Degenbaev | 0-1 | 29 | Open |
| 890 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 8 | Ihor Samunenkov | Marcin Sieciechowicz | 1-0 | 55 | Open |
| 891 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 7 | Joachim Mouhamad | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 892 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 6 | Marcin Sieciechowicz | Daniel Titichoca Daza | 1-0 | 47 | Open |
| 893 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 5 | German Bazeev | Marcin Sieciechowicz | 1-0 | 46 | Open |
| 894 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 4 | Vladimir Dobrov | Marcin Sieciechowicz | 1/2-1/2 | 43 | Open |
| 895 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 3 | Marcin Sieciechowicz | Oleksandr Prokhorov | 1-0 | 31 | Open |
| 896 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 2 | Rinat Jumabayev | Marcin Sieciechowicz | 1-0 | 39 | Open |
| 897 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 1 | Evan S Rosenberg | Marcin Sieciechowicz | 0-1 | 38 | Open |
| 898 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 11 | Marcin Sieciechowicz | Jonathan Pein | 1-0 | 57 | Open |
| 899 | 2021-04-27 | Titled Tuesday 27th Apr | chess.com INT | 10 | Brewington Hardaway | Marcin Sieciechowicz | 1-0 | 27 | Open |
| 900 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 9 | Marcin Sieciechowicz | Evgenij Kretov | 1-0 | 36 | Open |
| 901 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 8 | Mihnea Costachi | Marcin Sieciechowicz | 0-1 | 53 | Open |
| 902 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 7 | Marcin Sieciechowicz | Rafal Tymrakiewicz | 1-0 | 42 | Open |
| 903 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 6 | Read Samadov | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 904 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 5 | Dominique Myers | Marcin Sieciechowicz | 0-1 | 57 | Open |
| 905 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 4 | Marcin Sieciechowicz | Roberto Junio Brito Molina | 0-1 | 20 | Open |
| 906 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 3 | Marcin Sieciechowicz | Evgeny Gersov | 1-0 | 65 | Open |
| 907 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 2 | Aaron Bendayan Claros | Marcin Sieciechowicz | 0-1 | 22 | Open |
| 908 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 1 | Marcin Sieciechowicz | Antonio Lopez Del Alamo | 0-1 | 36 | Open |
| 909 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 11 | Andrey Ermolaev | Marcin Sieciechowicz | 0-1 | 18 | Open |
| 910 | 2021-04-20 | Titled Tuesday 20th Apr | chess.com INT | 10 | Konstantin Borsuk | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 911 | 2021-03-02 | Titled Tuesday 2nd Mar | chess.com INT | 5 | Saparmyrat Atabayev | Marcin Sieciechowicz | 1-0 | 29 | Open |
| 912 | 2021-03-02 | Titled Tuesday 2nd Mar | chess.com INT | 4 | Marcin Sieciechowicz | Tim Kett | 1-0 | 44 | Open |
| 913 | 2021-03-02 | Titled Tuesday 2nd Mar | chess.com INT | 3 | Marcin Sieciechowicz | Eugene Yanayt | 1-0 | 21 | Open |
| 914 | 2021-03-02 | Titled Tuesday 2nd Mar | chess.com INT | 2 | Gata Kamsky | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 915 | 2021-03-02 | Titled Tuesday 2nd Mar | chess.com INT | 1 | Vit Bures | Marcin Sieciechowicz | 0-1 | 22 | Open |
| 916 | 2021-02-02 | Titled Tuesday 2nd Feb | chess.com INT | 6 | Marcin Sieciechowicz | M Ruben D Zacarias | 0-1 | 43 | Open |
| 917 | 2021-02-02 | Titled Tuesday 2nd Feb | chess.com INT | 5 | Brandon Jacobson | Marcin Sieciechowicz | 1-0 | 20 | Open |
| 918 | 2021-02-02 | Titled Tuesday 2nd Feb | chess.com INT | 4 | Marcin Sieciechowicz | Vinzent Spitzl | 1-0 | 60 | Open |
| 919 | 2021-02-02 | Titled Tuesday 2nd Feb | chess.com INT | 3 | Mitra Hejazipour | Marcin Sieciechowicz | 1/2-1/2 | 65 | Open |
| 920 | 2021-02-02 | Titled Tuesday 2nd Feb | chess.com INT | 2 | Marcin Sieciechowicz | Dmitry Andreikin | 0-1 | 32 | Open |
| 921 | 2021-02-02 | Titled Tuesday 2nd Feb | chess.com INT | 1 | Rachid Schrik | Marcin Sieciechowicz | 0-1 | 47 | Open |
| 922 | 2021-01-19 | Titled Tuesday 19th Jan | chess.com INT | 2 | Agoston Juhasz | Marcin Sieciechowicz | 1-0 | 70 | Open |
| 923 | 2021-01-19 | Titled Tuesday 19th Jan | chess.com INT | 1 | Marcin Sieciechowicz | Alexandra Shvedova | 1/2-1/2 | 57 | Open |
| 924 | 2021-01-04 | 31st Cracovia Open A | Krakow POL | 9.6 | Nazar Ustianovich | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 925 | 2021-01-03 | 31st Cracovia Open A | Krakow POL | 8.8 | Marcin Sieciechowicz | Jakub Seemann | 1/2-1/2 | 45 | Open |
| 926 | 2021-01-02 | 31st Cracovia Open A | Krakow POL | 7.1 | Alexander Donchenko | Marcin Sieciechowicz | 1-0 | 30 | Open |
| 927 | 2021-01-02 | 31st Cracovia Open A | Krakow POL | 6.8 | Marcin Sieciechowicz | Aras Vardanyan | 1-0 | 21 | Open |
| 928 | 2020-12-31 | 31st Cracovia Open A | Krakow POL | 5.3 | Grzegorz Nasuta | Marcin Sieciechowicz | 1/2-1/2 | 16 | Open |
| 929 | 2020-12-30 | 31st Cracovia Open A | Krakow POL | 4.9 | Marcin Sieciechowicz | Martyna Wikar | 1-0 | 43 | Open |
| 930 | 2020-12-29 | 31st Cracovia Open A | Krakow POL | 3.8 | Maria Malicka | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 931 | 2020-12-28 | 31st Cracovia Open A | Krakow POL | 2.18 | Marcin Sieciechowicz | Maciej Bablok | 1-0 | 35 | Open |
| 932 | 2020-12-27 | 31st Cracovia Open A | Krakow POL | 1.14 | Krzysztof Lisowski | Marcin Sieciechowicz | 1/2-1/2 | 26 | Open |
| 933 | 2020-12-22 | Titled Tuesday 22nd Dec | chess.com INT | 6 | Harsha Bharathakoti | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 934 | 2020-12-22 | Titled Tuesday 22nd Dec | chess.com INT | 5 | Marcin Sieciechowicz | Yuriy Kuzubov | 0-1 | 67 | Open |
| 935 | 2020-12-22 | Titled Tuesday 22nd Dec | chess.com INT | 4 | Marcin Sieciechowicz | Vasif Durarbayli | 1-0 | 33 | Open |
| 936 | 2020-12-22 | Titled Tuesday 22nd Dec | chess.com INT | 3 | Luca Suvorov | Marcin Sieciechowicz | 0-1 | 56 | Open |
| 937 | 2020-12-22 | Titled Tuesday 22nd Dec | chess.com INT | 1 | Marcin Sieciechowicz | Alvaro Blanco Fernandez | 1-0 | 40 | Open |
| 938 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 8 | Marcin Sieciechowicz | Karina Ambartsumova | 0-1 | 27 | Open |
| 939 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 7 | Denis Lazavik | Marcin Sieciechowicz | 1-0 | 60 | Open |
| 940 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 6 | Marcin Sieciechowicz | Shawn Rodrigue-Lemieux | 1-0 | 30 | Open |
| 941 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 5 | Marcin Sieciechowicz | Vladimir Bychkov | 1-0 | 46 | Open |
| 942 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 4 | Artur Gabrielian | Marcin Sieciechowicz | 1-0 | 45 | Open |
| 943 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 3 | Samvel Ter-Sahakyan | Marcin Sieciechowicz | 1/2-1/2 | 57 | Open |
| 944 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 2 | Marcin Sieciechowicz | Jeffery Xiong | 1-0 | 30 | Open |
| 945 | 2020-12-01 | Titled Tuesday 1st Dec | chess.com INT | 1 | Marcin Sieciechowicz | Maryana Huda | 1-0 | 33 | Open |
| 946 | 2020-11-03 | Titled Tuesday 3rd Nov | chess.com INT | 7 | Marcin Sieciechowicz | Maksim Chigaev | 0-1 | 47 | Open |
| 947 | 2020-11-03 | Titled Tuesday 3rd Nov | chess.com INT | 6 | Marcin Sieciechowicz | Thalia Cervantes Landeiro | 1-0 | 61 | Open |
| 948 | 2020-11-03 | Titled Tuesday 3rd Nov | chess.com INT | 5 | Ilja Haitin | Marcin Sieciechowicz | 0-1 | 43 | Open |
| 949 | 2020-11-03 | Titled Tuesday 3rd Nov | chess.com INT | 4 | Marcin Sieciechowicz | Andrey Esipenko | 0-1 | 49 | Open |
| 950 | 2020-11-03 | Titled Tuesday 3rd Nov | chess.com INT | 2 | Marcin Sieciechowicz | Kirill Shevchenko | 0-1 | 28 | Open |
| 951 | 2020-11-03 | Titled Tuesday 3rd Nov | chess.com INT | 1 | Viktoriya Tarasova | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 952 | 2020-10-18 | ch-POL Rapid 2020 | Trzcianka POL | 9.3 | Marcin Sieciechowicz | Igor Janik | 0-1 | 58 | Open |
| 953 | 2020-10-18 | ch-POL Rapid 2020 | Trzcianka POL | 8.5 | Teofil Zima | Marcin Sieciechowicz | 0-1 | 46 | Open |
| 954 | 2020-10-18 | ch-POL Rapid 2020 | Trzcianka POL | 6.6 | Jan Klimkowski | Marcin Sieciechowicz | 1/2-1/2 | 39 | Open |
| 955 | 2020-10-18 | ch-POL Rapid 2020 | Trzcianka POL | 5.2 | Marcin Sieciechowicz | Michal Krasenkow | 0-1 | 47 | Open |
| 956 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 9 | Marcin Sieciechowicz | Leon Livaic | 1-0 | 25 | Open |
| 957 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 8 | Roberto Junio Brito Molina | Marcin Sieciechowicz | 0-1 | 29 | Open |
| 958 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 7 | Marcin Sieciechowicz | Ruben Gideon Koellner | 1-0 | 53 | Open |
| 959 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 6 | Mark Kotliar | Marcin Sieciechowicz | 0-1 | 20 | Open |
| 960 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 5 | Marcin Sieciechowicz | Baadur Jobava | 0-1 | 52 | Open |
| 961 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 4 | Bence Leszko | Marcin Sieciechowicz | 1/2-1/2 | 59 | Open |
| 962 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 3 | Alexandre Bouget | Marcin Sieciechowicz | 0-1 | 25 | Open |
| 963 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 2 | Marcin Sieciechowicz | Gukesh D | 0-1 | 24 | Open |
| 964 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 1 | Marcin Sieciechowicz | Ashokkumar Ramadoss | 1-0 | 47 | Open |
| 965 | 2020-10-06 | Titled Tuesday 6th Oct | chess.com INT | 10 | Gabor Nagy | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 966 | 2020-09-29 | Titled Tuesday 29th Sept | chess.com INT | 4 | Marcin Sieciechowicz | Gajwa Ankit | 0-1 | 51 | Open |
| 967 | 2020-09-29 | Titled Tuesday 29th Sept | chess.com INT | 3 | Shamsiddin Vokhidov | Marcin Sieciechowicz | 1-0 | 51 | Open |
| 968 | 2020-09-29 | Titled Tuesday 29th Sept | chess.com INT | 2 | Marcin Sieciechowicz | Andrew Tang | 1/2-1/2 | 85 | Open |
| 969 | 2020-09-29 | Titled Tuesday 29th Sept | chess.com INT | 1 | Isaac Wiebe | Marcin Sieciechowicz | 0-1 | 53 | Open |
| 970 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 9 | Mathias Womacka | Marcin Sieciechowicz | 1-0 | 24 | Open |
| 971 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 8 | Marcin Sieciechowicz | Erik Ronka | 1-0 | 66 | Open |
| 972 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 7 | Marcin Sieciechowicz | Nafisa Muminova | 1-0 | 52 | Open |
| 973 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 5 | Marcin Sieciechowicz | Artyom Timofeev | 0-1 | 37 | Open |
| 974 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 4 | Szymon Gumularz | Marcin Sieciechowicz | 1/2-1/2 | 38 | Open |
| 975 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 3 | Marcin Sieciechowicz | Djurabek Khamrakulov | 1/2-1/2 | 52 | Open |
| 976 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 2 | M. Amin Tabatabaei | Marcin Sieciechowicz | 0-1 | 28 | Open |
| 977 | 2020-09-22 | Titled Tuesday 22nd Sept | chess.com INT | 1 | Bryan Xie | Marcin Sieciechowicz | 0-1 | 56 | Open |
| 978 | 2020-09-13 | TCh-POL 2nd League 2020 | Poronin POL | 9.11 | Marcin Sieciechowicz | Mateusz Brozyna | 1/2-1/2 | 18 | Open |
| 979 | 2020-09-12 | TCh-POL 2nd League 2020 | Poronin POL | 8.7 | Dominik Marczuk | Marcin Sieciechowicz | 1/2-1/2 | 14 | Open |
| 980 | 2020-09-11 | TCh-POL 2nd League 2020 | Poronin POL | 7.13 | Marcin Sieciechowicz | Marcin Steczek | 1/2-1/2 | 28 | Open |
| 981 | 2020-09-10 | TCh-POL 2nd League 2020 | Poronin POL | 6.13 | Piotr Piesik | Marcin Sieciechowicz | 0-1 | 57 | Open |
| 982 | 2020-09-09 | TCh-POL 2nd League 2020 | Poronin POL | 5.9 | Marcin Sieciechowicz | Jakub Fus | 1/2-1/2 | 50 | Open |
| 983 | 2020-09-08 | TCh-POL 2nd League 2020 | Poronin POL | 4.14 | Dawid Niekras | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 984 | 2020-09-07 | TCh-POL 2nd League 2020 | Poronin POL | 3.17 | Marcin Sieciechowicz | Damian Bednarczyk | 1/2-1/2 | 41 | Open |
| 985 | 2020-09-06 | TCh-POL 2nd League 2020 | Poronin POL | 2.13 | Kacper Polok | Marcin Sieciechowicz | 1/2-1/2 | 45 | Open |
| 986 | 2020-09-05 | TCh-POL 2nd League 2020 | Poronin POL | 1.6 | Marcin Sieciechowicz | Radoslaw Jedynak | 1/2-1/2 | 26 | Open |
| 987 | 2020-08-25 | Titled Tue 25th Aug | chess.com INT | 5 | Ekaterina Miroshnik | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 988 | 2020-08-25 | Titled Tue 25th Aug | chess.com INT | 4 | Marcin Sieciechowicz | Ryan Hamley | 0-1 | 43 | Open |
| 989 | 2020-08-25 | Titled Tue 25th Aug | chess.com INT | 3 | Marcelo Villalba | Marcin Sieciechowicz | 0-1 | 47 | Open |
| 990 | 2020-08-25 | Titled Tue 25th Aug | chess.com INT | 2 | Marcin Sieciechowicz | Ruben Gideon Koellner | 1-0 | 44 | Open |
| 991 | 2020-08-18 | Titled Tue 18th Aug | chess.com INT | 7 | Marcin Sieciechowicz | Mamikon Gharibyan | 0-1 | 32 | Open |
| 992 | 2020-08-18 | Titled Tue 18th Aug | chess.com INT | 6 | Aleksey Sorokin | Marcin Sieciechowicz | 1-0 | 32 | Open |
| 993 | 2020-08-18 | Titled Tue 18th Aug | chess.com INT | 5 | Mikhail Kobalia | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 994 | 2020-08-18 | Titled Tue 18th Aug | chess.com INT | 4 | Marcin Sieciechowicz | Karina Ivanova | 1-0 | 51 | Open |
| 995 | 2020-08-18 | Titled Tue 18th Aug | chess.com INT | 3 | Marcin Sieciechowicz | Ketevan Arakhamia-Grant | 1-0 | 33 | Open |
| 996 | 2020-08-18 | Titled Tue 18th Aug | chess.com INT | 2 | Grigoriy Oparin | Marcin Sieciechowicz | 1-0 | 48 | Open |
| 997 | 2020-08-18 | Titled Tue 18th Aug | chess.com INT | 1 | Bommini Mounika Akshaya | Marcin Sieciechowicz | 0-1 | 46 | Open |
| 998 | 2020-08-11 | Titled Tue 11th Aug | chess.com INT | 4 | Natalia Zhukova | Marcin Sieciechowicz | 1-0 | 29 | Open |
| 999 | 2020-08-11 | Titled Tue 11th Aug | chess.com INT | 3 | Marcin Sieciechowicz | Vantika Agrawal | 1/2-1/2 | 29 | Open |
| 1000 | 2020-08-11 | Titled Tue 11th Aug | chess.com INT | 2 | Nikita Vitiugov | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 1001 | 2020-08-11 | Titled Tue 11th Aug | chess.com INT | 1 | Roza Idrisova | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 1002 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 9.2 | Rafal Kowalczyk | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 1003 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 8.3 | Marcin Sieciechowicz | Wojciech Reza | 1-0 | 59 | Open |
| 1004 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 7.2 | Vojtech Zwardon | Marcin Sieciechowicz | 1/2-1/2 | 59 | Open |
| 1005 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 6.5 | Marcin Sieciechowicz | Maciej Swicarz | 1-0 | 32 | Open |
| 1006 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 5.2 | Marcin Dziuba | Marcin Sieciechowicz | 1/2-1/2 | 61 | Open |
| 1007 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 4.5 | Marcin Sieciechowicz | Daniel Kopylov | 1-0 | 32 | Open |
| 1008 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 3.1 | Kamil Stachowiak | Marcin Sieciechowicz | 1/2-1/2 | 41 | Open |
| 1009 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 2.8 | Marcin Sieciechowicz | Tomasz Jankowiak | 1-0 | 34 | Open |
| 1010 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 11.1 | Radoslaw Barski | Marcin Sieciechowicz | 1/2-1/2 | 3 | Open |
| 1011 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 10.1 | Marcin Sieciechowicz | Michal Wisniewski | 1/2-1/2 | 30 | Open |
| 1012 | 2020-08-09 | Adolf Anderssen Mem 2020 | Wroclaw POL | 1.8 | Przemyslaw Borowski | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 1013 | 2020-08-08 | Wroclaw Open 2020 | Wroclaw POL | 9.4 | Pawel Piekielny | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 1014 | 2020-08-07 | Wroclaw Open 2020 | Wroclaw POL | 8.2 | Daniel Kopylov | Marcin Sieciechowicz | 1/2-1/2 | 48 | Open |
| 1015 | 2020-08-06 | Wroclaw Open 2020 | Wroclaw POL | 7.1 | Marcin Sieciechowicz | Filip Cukrowski | 1/2-1/2 | 52 | Open |
| 1016 | 2020-08-05 | Wroclaw Open 2020 | Wroclaw POL | 6.3 | Marcin Sieciechowicz | Paul Zwahr | 1-0 | 48 | Open |
| 1017 | 2020-08-04 | Wroclaw Open 2020 | Wroclaw POL | 5.4 | Alex Dac-Vuong Nguyen | Marcin Sieciechowicz | 1/2-1/2 | 24 | Open |
| 1018 | 2020-08-03 | Wroclaw Open 2020 | Wroclaw POL | 4.1 | Marcin Sieciechowicz | Radoslaw Barski | 1/2-1/2 | 70 | Open |
| 1019 | 2020-08-02 | Wroclaw Open 2020 | Wroclaw POL | 3.2 | Michael Kopylov | Marcin Sieciechowicz | 1/2-1/2 | 7 | Open |
| 1020 | 2020-08-02 | Wroclaw Open 2020 | Wroclaw POL | 2.4 | Marcin Sieciechowicz | Tomasz Jankowiak | 1-0 | 46 | Open |
| 1021 | 2020-08-01 | Wroclaw Open 2020 | Wroclaw POL | 1.4 | Konrad Szczesniak | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 1022 | 2020-07-21 | Titled Tuesday 21st July | chess.com INT | 6 | Pavel Chernomordik | Marcin Sieciechowicz | 1-0 | 49 | Open |
| 1023 | 2020-07-21 | Titled Tuesday 21st July | chess.com INT | 5 | Marcin Sieciechowicz | Mihailo Djokic | 0-1 | 35 | Open |
| 1024 | 2020-07-21 | Titled Tuesday 21st July | chess.com INT | 4 | Pavel Miroshnichenko | Marcin Sieciechowicz | 0-1 | 53 | Open |
| 1025 | 2020-07-21 | Titled Tuesday 21st July | chess.com INT | 3 | Irine Kharisma Sukandar | Marcin Sieciechowicz | 1-0 | 44 | Open |
| 1026 | 2020-07-21 | Titled Tuesday 21st July | chess.com INT | 2 | Marcin Sieciechowicz | Narayanan S L | 0-1 | 91 | Open |
| 1027 | 2020-07-21 | Titled Tuesday 21st July | chess.com INT | 1 | Marcin Sieciechowicz | Sriram Krishnakumar | 1-0 | 37 | Open |
| 1028 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 9 | Marcin Sieciechowicz | Marek Karas | 1-0 | 47 | Open |
| 1029 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 8 | Olga Babiy | Marcin Sieciechowicz | 1/2-1/2 | 107 | Open |
| 1030 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 7 | Marcin Sieciechowicz | Samvel Ter-Sahakyan | 0-1 | 50 | Open |
| 1031 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 6 | Marcin Sieciechowicz | Mikhail Pesotskiy | 1-0 | 30 | Open |
| 1032 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 5 | Tomasz Jaskolka | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 1033 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 4 | Marcin Sieciechowicz | Oleg Terletsky | 1-0 | 37 | Open |
| 1034 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 3 | Marcin Sieciechowicz | Maaike Keetman | 1/2-1/2 | 67 | Open |
| 1035 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 2 | Rushaan Mahajan | Marcin Sieciechowicz | 1/2-1/2 | 23 | Open |
| 1036 | 2020-07-14 | Titled Tuesday 14th July | chess.com INT | 1 | Marcin Sieciechowicz | Ildar F Idrisov | 0-1 | 82 | Open |
| 1037 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 9 | Yuliia Osmak | Marcin Sieciechowicz | 0-1 | 55 | Open |
| 1038 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 8 | Marcin Sieciechowicz | David Sh. Gevorgyan | 1-0 | 72 | Open |
| 1039 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 7 | Stanislav Tsyhanchuk | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 1040 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 6 | Marcin Sieciechowicz | Pablo Salinas Herrera | 0-1 | 64 | Open |
| 1041 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 5 | Jorge Carlos Antonio | Marcin Sieciechowicz | 0-1 | 41 | Open |
| 1042 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 3 | Gata Kamsky | Marcin Sieciechowicz | 1-0 | 35 | Open |
| 1043 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 2 | Marcin Sieciechowicz | Olexandr Bortnyk | 1/2-1/2 | 89 | Open |
| 1044 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 1 | Sriram Krishnakumar | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 1045 | 2020-07-07 | Titled Tuesday 7th July | chess.com INT | 10 | Marcin Sieciechowicz | Geanfrancesco Pereira | 0-1 | 29 | Open |
| 1046 | 2020-03-01 | 4NCL Div 1a 2019-20 | Daventry ENG | 2.34 | Jamie A Horton | Marcin Sieciechowicz | 0-1 | 66 | Open |
| 1047 | 2020-02-29 | 4NCL Div 1a 2019-20 | Daventry ENG | 1.14 | Marcin Sieciechowicz | Romain Edouard | 0-1 | 52 | Open |
| 1048 | 2020-02-09 | 2nd Bundesliga Nord 19-20 | Germany GER | 8.3 | Marcin Sieciechowicz | Mads Boe | 1/2-1/2 | 28 | Open |
| 1049 | 2020-02-08 | 2nd Bundesliga Nord 19-20 | Germany GER | 7.3 | Jari Reuker | Marcin Sieciechowicz | 1-0 | 55 | Open |
| 1050 | 2019-12-31 | XXXVIII Zamenhofa Mem | Bialystok POL | 9.7 | Marcin Sieciechowicz | Jakub Szostko | 1-0 | 73 | Open |
| 1051 | 2019-12-30 | XXXVIII Zamenhofa Mem | Bialystok POL | 8.8 | Marcin Pietruszewski | Marcin Sieciechowicz | 1/2-1/2 | 41 | Open |
| 1052 | 2019-12-30 | XXXVIII Zamenhofa Mem | Bialystok POL | 7.7 | Marcin Sieciechowicz | Jurij Tihonov | 1/2-1/2 | 24 | Open |
| 1053 | 2019-12-29 | XXXVIII Zamenhofa Mem | Bialystok POL | 6.5 | Arkadiusz Leniart | Marcin Sieciechowicz | 1-0 | 32 | Open |
| 1054 | 2019-12-29 | XXXVIII Zamenhofa Mem | Bialystok POL | 5.4 | Marcin Sieciechowicz | Filip Cukrowski | 1/2-1/2 | 44 | Open |
| 1055 | 2019-12-28 | XXXVIII Zamenhofa Mem | Bialystok POL | 4.7 | Jakub Luberanski | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 1056 | 2019-12-28 | XXXVIII Zamenhofa Mem | Bialystok POL | 3.8 | Marcin Sieciechowicz | Arkadiusz Kaczmarek | 1-0 | 49 | Open |
| 1057 | 2019-12-27 | XXXVIII Zamenhofa Mem | Bialystok POL | 2.1 | Bartlomiej Heberla | Marcin Sieciechowicz | 1-0 | 56 | Open |
| 1058 | 2019-12-27 | XXXVIII Zamenhofa Mem | Bialystok POL | 1.14 | Marcin Sieciechowicz | Alexander Pettersson | 1-0 | 55 | Open |
| 1059 | 2019-12-08 | 2nd Bundesliga Nord 19-20 | Germany GER | 6.3 | Marcin Sieciechowicz | Frank Bracker | 0-1 | 60 | Open |
| 1060 | 2019-12-07 | 2nd Bundesliga Nord 19-20 | Germany GER | 5.3 | Aljoscha Feuerstack | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 1061 | 2019-12-02 | 35th Voivoda Cup 2019 | Legnica POL | 9.5 | Marcin Sieciechowicz | Toms Kantans | 0-1 | 42 | Open |
| 1062 | 2019-12-01 | 35th Voivoda Cup 2019 | Legnica POL | 8.1 | Aleksander Hnydiuk | Marcin Sieciechowicz | 1/2-1/2 | 65 | Open |
| 1063 | 2019-11-30 | 35th Voivoda Cup 2019 | Legnica POL | 7.5 | Kacper Polok | Marcin Sieciechowicz | 0-1 | 77 | Open |
| 1064 | 2019-11-29 | 35th Voivoda Cup 2019 | Legnica POL | 6.2 | Marcin Sieciechowicz | Lukasz Cyborowski | 1/2-1/2 | 22 | Open |
| 1065 | 2019-11-29 | 35th Voivoda Cup 2019 | Legnica POL | 5.4 | Kacper Grela | Marcin Sieciechowicz | 0-1 | 60 | Open |
| 1066 | 2019-11-28 | 35th Voivoda Cup 2019 | Legnica POL | 4.3 | Marcin Sieciechowicz | Piotr Goluch | 1/2-1/2 | 40 | Open |
| 1067 | 2019-11-27 | 35th Voivoda Cup 2019 | Legnica POL | 3.3 | Yuri Solodovnichenko | Marcin Sieciechowicz | 0-1 | 38 | Open |
| 1068 | 2019-11-27 | 35th Voivoda Cup 2019 | Legnica POL | 2.4 | Marcin Sieciechowicz | Dhulipalla Bala Chandra Prasad | 1/2-1/2 | 44 | Open |
| 1069 | 2019-11-26 | 35th Voivoda Cup 2019 | Legnica POL | 1.2 | Petro Golubka | Marcin Sieciechowicz | 1/2-1/2 | 76 | Open |
| 1070 | 2019-11-24 | 2nd Bundesliga Nord 19-20 | Germany GER | 4.3 | Mladen Muse | Marcin Sieciechowicz | 1/2-1/2 | 23 | Open |
| 1071 | 2019-11-23 | 2nd Bundesliga Nord 19-20 | Germany GER | 3.3 | Marcin Sieciechowicz | Daniel Malek | 1/2-1/2 | 59 | Open |
| 1072 | 2019-10-20 | 2nd Bundesliga Nord 19-20 | Germany GER | 2.2 | Marcin Sieciechowicz | Andreas Penzold | 1/2-1/2 | 26 | Open |
| 1073 | 2019-10-19 | 2nd Bundesliga Nord 19-20 | Germany GER | 1.2 | Theo Gungl | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1074 | 2019-09-15 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 9.8 | Marcin Sieciechowicz | Rafal Tomczak | 1/2-1/2 | 52 | Open |
| 1075 | 2019-09-14 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 8.3 | Zbigniew Pakleza | Marcin Sieciechowicz | 1/2-1/2 | 46 | Open |
| 1076 | 2019-09-13 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 7.6 | Marcin Sieciechowicz | Radoslaw Psyk | 1-0 | 60 | Open |
| 1077 | 2019-09-12 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 6.7 | Tadeusz Helis | Marcin Sieciechowicz | 1/2-1/2 | 21 | Open |
| 1078 | 2019-09-11 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 5.9 | Marcin Sieciechowicz | Bartosz Nowicki | 1/2-1/2 | 22 | Open |
| 1079 | 2019-09-10 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 4.9 | Dawid Niekras | Marcin Sieciechowicz | 1/2-1/2 | 57 | Open |
| 1080 | 2019-09-08 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 2.13 | Piotr Goluch | Marcin Sieciechowicz | 1/2-1/2 | 42 | Open |
| 1081 | 2019-09-07 | TCh-POL 2nd League 2019 | Jastrzebia Gora POL | 1.4 | Marcin Sieciechowicz | Aleksander Kumala | 1/2-1/2 | 56 | Open |
| 1082 | 2019-08-25 | 27th Poznan Open 2019 | Poznan POL | 9.5 | Marcin Sieciechowicz | Jakub Suliborski | 1/2-1/2 | 100 | Open |
| 1083 | 2019-08-24 | 27th Poznan Open 2019 | Poznan POL | 8.7 | Mateusz Malaczek | Marcin Sieciechowicz | 0-1 | 58 | Open |
| 1084 | 2019-08-23 | 27th Poznan Open 2019 | Poznan POL | 7.8 | Marcin Sieciechowicz | Rafal Nowak | 1/2-1/2 | 46 | Open |
| 1085 | 2019-08-22 | 27th Poznan Open 2019 | Poznan POL | 6.14 | Dariusz Duszczak | Marcin Sieciechowicz | 0-1 | 57 | Open |
| 1086 | 2019-08-21 | 27th Poznan Open 2019 | Poznan POL | 5.4 | Marcin Sieciechowicz | Marcin Szelag | 0-1 | 64 | Open |
| 1087 | 2019-08-20 | 27th Poznan Open 2019 | Poznan POL | 4.2 | Lukasz Licznerski | Marcin Sieciechowicz | 1-0 | 81 | Open |
| 1088 | 2019-08-19 | 27th Poznan Open 2019 | Poznan POL | 3.2 | Marcin Sieciechowicz | Marcin Chmiel | 1-0 | 32 | Open |
| 1089 | 2019-08-18 | 27th Poznan Open 2019 | Poznan POL | 2.2 | Yakau Tsesler | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 1090 | 2019-08-18 | 27th Poznan Open 2019 | Poznan POL | 1.2 | Marcin Sieciechowicz | Krzysztof Rozumek | 1-0 | 54 | Open |
| 1091 | 2019-07-14 | Najdorf Mem Open A 2019 | Warsaw POL | 9.22 | Marcin Sieciechowicz | Przemyslaw Piotrowski | 0-1 | 55 | Open |
| 1092 | 2019-07-13 | Najdorf Mem Open A 2019 | Warsaw POL | 8.24 | Konrad Bus | Marcin Sieciechowicz | 1/2-1/2 | 77 | Open |
| 1093 | 2019-07-12 | Najdorf Mem Open A 2019 | Warsaw POL | 7.16 | Marcin Sieciechowicz | Krzysztof Budrewicz | 0-1 | 39 | Open |
| 1094 | 2019-07-11 | Najdorf Mem Open A 2019 | Warsaw POL | 6.4 | Kamil Dragun | Marcin Sieciechowicz | 1-0 | 55 | Open |
| 1095 | 2019-07-10 | Najdorf Mem Open A 2019 | Warsaw POL | 5.1 | Marcin Sieciechowicz | Igor Janik | 1-0 | 31 | Open |
| 1096 | 2019-07-09 | Najdorf Mem Open A 2019 | Warsaw POL | 4.22 | Bartosz Sowul | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 1097 | 2019-07-08 | Najdorf Mem Open A 2019 | Warsaw POL | 3.25 | Marcin Sieciechowicz | Kacper Zochowski | 1-0 | 52 | Open |
| 1098 | 2019-07-07 | Najdorf Mem Open A 2019 | Warsaw POL | 2.34 | Bartosz Panek | Marcin Sieciechowicz | 1/2-1/2 | 46 | Open |
| 1099 | 2019-07-06 | Najdorf Mem Open A 2019 | Warsaw POL | 1.33 | Marcin Sieciechowicz | Elizaveta Martynyuk | 1/2-1/2 | 72 | Open |
| 1100 | 2019-06-30 | 3rd Baltic Cup 2019 | Darlowko POL | 9.1 | Marcin Sieciechowicz | Pawel Krajewicz | 1/2-1/2 | 63 | Open |
| 1101 | 2019-06-29 | 3rd Baltic Cup 2019 | Darlowko POL | 8.1 | Adam Jordan | Marcin Sieciechowicz | 1/2-1/2 | 52 | Open |
| 1102 | 2019-06-28 | 3rd Baltic Cup 2019 | Darlowko POL | 7.2 | Marcin Sieciechowicz | Stanislaw Praczukowski | 1-0 | 59 | Open |
| 1103 | 2019-06-27 | 3rd Baltic Cup 2019 | Darlowko POL | 6.2 | Artur Oborski | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 1104 | 2019-06-26 | 3rd Baltic Cup 2019 | Darlowko POL | 5.3 | Marcin Sieciechowicz | Kamil Derylo | 1-0 | 70 | Open |
| 1105 | 2019-06-25 | 3rd Baltic Cup 2019 | Darlowko POL | 4.2 | Vadim Shishkin | Marcin Sieciechowicz | 1/2-1/2 | 14 | Open |
| 1106 | 2019-06-24 | 3rd Baltic Cup 2019 | Darlowko POL | 3.2 | Marcin Sieciechowicz | Witold Klepek | 0-1 | 70 | Open |
| 1107 | 2019-06-24 | 3rd Baltic Cup 2019 | Darlowko POL | 2.2 | 1100238 | Marcin Sieciechowicz | 0-1 | 26 | Open |
| 1108 | 2019-06-23 | 3rd Baltic Cup 2019 | Darlowko POL | 1.2 | Marcin Sieciechowicz | Jacek Szwaj | 1-0 | 42 | Open |
| 1109 | 2019-02-02 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 9.6 | Marcin Sieciechowicz | Bartlomiej Niedbala | 0-1 | 49 | Open |
| 1110 | 2019-02-01 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 8.4 | Krzysztof Budrewicz | Marcin Sieciechowicz | 1/2-1/2 | 96 | Open |
| 1111 | 2019-01-31 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 7.7 | Marcin Sieciechowicz | Jakub Seemann | 1-0 | 33 | Open |
| 1112 | 2019-01-30 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 6.4 | Bartlomiej Rozycki | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 1113 | 2019-01-29 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 5.7 | Marcin Sieciechowicz | Maria Malicka | 1-0 | 58 | Open |
| 1114 | 2019-01-28 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 4.5 | Rafal Malczyk | Marcin Sieciechowicz | 1-0 | 47 | Open |
| 1115 | 2019-01-27 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 3.7 | Marcin Sieciechowicz | Mateusz Budnik | 1-0 | 49 | Open |
| 1116 | 2019-01-26 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 2.7 | Daniel Trybus | Marcin Sieciechowicz | 1/2-1/2 | 34 | Open |
| 1117 | 2019-01-26 | 12th Gora Sw. Anny Open | Gora Swietej Anny POL | 1.1 | Marcin Sieciechowicz | Bartosz Fiszer | 0-1 | 63 | Open |
| 1118 | 2018-11-28 | 34th Voivoda Cup 2018 | Legnica POL | 9.5 | Tobias Hirneise | Marcin Sieciechowicz | 1/2-1/2 | 23 | Open |
| 1119 | 2018-11-27 | 34th Voivoda Cup 2018 | Legnica POL | 8.2 | Marcin Sieciechowicz | Pavel Simacek | 1-0 | 64 | Open |
| 1120 | 2018-11-26 | 34th Voivoda Cup 2018 | Legnica POL | 7.4 | Damian Lewtak | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 1121 | 2018-11-26 | 34th Voivoda Cup 2018 | Legnica POL | 6.3 | Marcin Sieciechowicz | Piotr Murdzia | 0-1 | 49 | Open |
| 1122 | 2018-11-25 | 34th Voivoda Cup 2018 | Legnica POL | 5.3 | Evgeny Gleizerov | Marcin Sieciechowicz | 1-0 | 47 | Open |
| 1123 | 2018-11-24 | 34th Voivoda Cup 2018 | Legnica POL | 4.4 | Marcin Sieciechowicz | Oskar Wieczorek | 1/2-1/2 | 43 | Open |
| 1124 | 2018-11-23 | 34th Voivoda Cup 2018 | Legnica POL | 3.2 | Pawel Teclaf | Marcin Sieciechowicz | 1/2-1/2 | 71 | Open |
| 1125 | 2018-11-23 | 34th Voivoda Cup 2018 | Legnica POL | 2.5 | Marcin Sieciechowicz | Grzegorz Nasuta | 1/2-1/2 | 69 | Open |
| 1126 | 2018-11-22 | 34th Voivoda Cup 2018 | Legnica POL | 1.1 | Marcin Sieciechowicz | Tadeas Kriebel | 0-1 | 41 | Open |
| 1127 | 2018-11-18 | Romania 100 Open 2018 | Alba Iulia ROU | 9.8 | Marcin Sieciechowicz | Gevorg Harutjunyan | 1/2-1/2 | 39 | Open |
| 1128 | 2018-11-17 | Romania 100 Open 2018 | Alba Iulia ROU | 8.5 | Vadim Moiseenko | Marcin Sieciechowicz | 1/2-1/2 | 41 | Open |
| 1129 | 2018-11-16 | Romania 100 Open 2018 | Alba Iulia ROU | 7.3 | Marcin Sieciechowicz | Evgeny A. Levin | 1/2-1/2 | 14 | Open |
| 1130 | 2018-11-14 | Romania 100 Open 2018 | Alba Iulia ROU | 4.5 | Mihail Marin | Marcin Sieciechowicz | 1/2-1/2 | 46 | Open |
| 1131 | 2018-11-13 | Romania 100 Open 2018 | Alba Iulia ROU | 3.2 | Marcin Sieciechowicz | Alexei Fedorov | 1/2-1/2 | 25 | Open |
| 1132 | 2018-10-28 | TCh-POL Ekstraliga 2018 | Poland POL | 9.4 | Marcin Sieciechowicz | Michal Luch | 1/2-1/2 | 34 | Open |
| 1133 | 2018-10-27 | TCh-POL Ekstraliga 2018 | Poland POL | 8.1 | Marcin Sieciechowicz | Oskar Wieczorek | 1-0 | 55 | Open |
| 1134 | 2018-10-26 | TCh-POL Ekstraliga 2018 | Poland POL | 7.1 | Radoslaw Sliwerski | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 1135 | 2018-10-14 | 8th Dziedzica Mem 2018 | Trzcianka POL | 7.8 | Mikolaj Nowak | Marcin Sieciechowicz | 1-0 | 55 | Open |
| 1136 | 2018-10-14 | 8th Dziedzica Mem 2018 | Trzcianka POL | 5.6 | Pawel Teclaf | Marcin Sieciechowicz | 1-0 | 25 | Open |
| 1137 | 2018-10-14 | 8th Dziedzica Mem 2018 | Trzcianka POL | 4.9 | Marcin Sieciechowicz | Jakub Chyzy | 1-0 | 41 | Open |
| 1138 | 2018-09-16 | TCh-POL Ekstraliga 2018 | Poland POL | 6.1 | Marcin Sieciechowicz | Aleksander Hnydiuk | 1/2-1/2 | 37 | Open |
| 1139 | 2018-09-15 | TCh-POL Ekstraliga 2018 | Poland POL | 5.1 | Roman Tomaszewski | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 1140 | 2018-09-14 | TCh-POL Ekstraliga 2018 | Poland POL | 4.1 | Marcin Sieciechowicz | Marcel Kanarek | 1/2-1/2 | 52 | Open |
| 1141 | 2018-09-09 | TCh-POL 2nd League 2018 | Jastrzebia Gora POL | 9.7 | Andrzej Krzywda | Marcin Sieciechowicz | 1/2-1/2 | 34 | Open |
| 1142 | 2018-09-08 | TCh-POL 2nd League 2018 | Jastrzebia Gora POL | 8.9 | Marcin Sieciechowicz | Mateusz Brzezinski | 1-0 | 54 | Open |
| 1143 | 2018-09-07 | TCh-POL 2nd League 2018 | Jastrzebia Gora POL | 7.11 | Przemyslaw Zielinski | Marcin Sieciechowicz | 1/2-1/2 | 38 | Open |
| 1144 | 2018-08-26 | 26th Poznan Open 2018 | Poznan POL | 9.3 | Jacek Orzechowski | Marcin Sieciechowicz | 1/2-1/2 | 28 | Open |
| 1145 | 2018-08-25 | 26th Poznan Open 2018 | Poznan POL | 8.2 | Marcin Sieciechowicz | 1100041 | 1/2-1/2 | 19 | Open |
| 1146 | 2018-08-24 | 26th Poznan Open 2018 | Poznan POL | 7.1 | Vitali Koziak | Marcin Sieciechowicz | 1/2-1/2 | 5 | Open |
| 1147 | 2018-08-23 | 26th Poznan Open 2018 | Poznan POL | 6.2 | Marcin Sieciechowicz | Klaudiusz Urban | 1/2-1/2 | 4 | Open |
| 1148 | 2018-08-22 | 26th Poznan Open 2018 | Poznan POL | 5.2 | Krzysztof Chojnacki | Marcin Sieciechowicz | 1/2-1/2 | 30 | Open |
| 1149 | 2018-08-21 | 26th Poznan Open 2018 | Poznan POL | 4.2 | Marcin Sieciechowicz | Marek Zakrzewski | 1-0 | 40 | Open |
| 1150 | 2018-08-20 | 26th Poznan Open 2018 | Poznan POL | 3.2 | Jakub Garbowski | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 1151 | 2018-08-19 | 26th Poznan Open 2018 | Poznan POL | 2.2 | Marcin Sieciechowicz | Wojciech Nadstoga | 1-0 | 36 | Open |
| 1152 | 2018-08-19 | 26th Poznan Open 2018 | Poznan POL | 1.2 | Anna Roszkiewicz | Marcin Sieciechowicz | 0-1 | 37 | Open |
| 1153 | 2018-07-16 | Najdorf Mem Open A 2018 | Warsaw POL | 9.5 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | 32 | Open |
| 1154 | 2018-07-15 | Najdorf Mem Open A 2018 | Warsaw POL | 8.12 | Marcin Sieciechowicz | Alex Krstulovic | 1-0 | 49 | Open |
| 1155 | 2018-07-14 | Najdorf Mem Open A 2018 | Warsaw POL | 7.8 | Marcin Sieciechowicz | Vitaliy Bernadskiy | 0-1 | 48 | Open |
| 1156 | 2018-07-13 | Najdorf Mem Open A 2018 | Warsaw POL | 6.6 | Marcel Kanarek | Marcin Sieciechowicz | 1/2-1/2 | 68 | Open |
| 1157 | 2018-07-12 | Najdorf Mem Open A 2018 | Warsaw POL | 5.13 | Marcin Sieciechowicz | Marek Chomczyk | 1-0 | 45 | Open |
| 1158 | 2018-07-11 | Najdorf Mem Open A 2018 | Warsaw POL | 4.15 | Monnisha G K | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 1159 | 2018-07-10 | Najdorf Mem Open A 2018 | Warsaw POL | 3.25 | Marcin Sieciechowicz | Jasem AlHuwar | 1-0 | 40 | Open |
| 1160 | 2018-07-09 | Najdorf Mem Open A 2018 | Warsaw POL | 2.11 | Alicja Sliwicka | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 1161 | 2018-07-08 | Najdorf Mem Open A 2018 | Warsaw POL | 1.21 | Marcin Sieciechowicz | Alexandra Zherebtsova | 1-0 | 29 | Open |
| 1162 | 2018-07-03 | 2nd Baltic Cup 2018 | Darlowko POL | 9.3 | Marcin Sieciechowicz | Antoni Szustakowski | 1-0 | 90 | Open |
| 1163 | 2018-07-02 | 2nd Baltic Cup 2018 | Darlowko POL | 8.2 | Marcin Sieciechowicz | Vadim Shishkin | 1/2-1/2 | 8 | Open |
| 1164 | 2018-07-01 | 2nd Baltic Cup 2018 | Darlowko POL | 7.1 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | 57 | Open |
| 1165 | 2018-06-29 | 2nd Baltic Cup 2018 | Darlowko POL | 6.2 | Igor Kowalski | Marcin Sieciechowicz | 0-1 | 58 | Open |
| 1166 | 2018-06-28 | 2nd Baltic Cup 2018 | Darlowko POL | 5.3 | Marcin Sieciechowicz | Jakub Kosakowski | 1-0 | 46 | Open |
| 1167 | 2018-06-27 | 2nd Baltic Cup 2018 | Darlowko POL | 4.2 | Evgeny Gleizerov | Marcin Sieciechowicz | 1/2-1/2 | 30 | Open |
| 1168 | 2018-06-26 | 2nd Baltic Cup 2018 | Darlowko POL | 3.4 | Marcin Sieciechowicz | Bartosz Fiszer | 1-0 | 27 | Open |
| 1169 | 2018-06-25 | 2nd Baltic Cup 2018 | Darlowko POL | 2.4 | Tygran Dzhuguryan | Marcin Sieciechowicz | 1/2-1/2 | 54 | Open |
| 1170 | 2018-06-24 | 2nd Baltic Cup 2018 | Darlowko POL | 1.5 | Marcin Sieciechowicz | Michal Fiedorek | 1-0 | 44 | Open |
| 1171 | 2018-03-04 | ch-POL Rapid 2018 | Zgierz POL | 9.31 | Marcin Sieciechowicz | Jakub Suliborski | 1-0 | 38 | Open |
| 1172 | 2018-03-04 | ch-POL Rapid 2018 | Zgierz POL | 5.22 | Marcin Sieciechowicz | Marek Chomczyk | 0-1 | 52 | Open |
| 1173 | 2018-03-04 | ch-POL Rapid 2018 | Zgierz POL | 4.33 | Beata Andrejczuk | Marcin Sieciechowicz | 0-1 | 34 | Open |
| 1174 | 2018-03-04 | ch-POL Rapid 2018 | Zgierz POL | 2.19 | Aleksander Kielbratowski | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1175 | 2018-03-04 | ch-POL Rapid 2018 | Zgierz POL | 1.19 | Marcin Sieciechowicz | Kacper Kacprzak | 1-0 | 56 | Open |
| 1176 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 9.3 | Marcin Sieciechowicz | Grzegorz Masternak | 1-0 | 44 | Open |
| 1177 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 8.7 | Pawel Kowalczyk | Marcin Sieciechowicz | 0-1 | 63 | Open |
| 1178 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 7.15 | Michal Mazurkiewicz | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 1179 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 6.19 | Marcin Sieciechowicz | Jan Golenia | 0-1 | 59 | Open |
| 1180 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 5.11 | Mariusz Duch | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 1181 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 4.19 | Marcin Sieciechowicz | Tomasz Rak | 1-0 | 44 | Open |
| 1182 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 3.15 | Krystian Jedryczka | Marcin Sieciechowicz | 1/2-1/2 | 41 | Open |
| 1183 | 2018-03-03 | TCh-POL Rapid 2018 | Zgierz POL | 2.19 | Marcin Sieciechowicz | Aleksander Masternak | 1-0 | 73 | Open |
| 1184 | 2018-01-24 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 10.1 | Michal Walentukiewicz | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 1185 | 2018-01-23 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 9.1 | Marcin Sieciechowicz | Igor Kowalski | 1/2-1/2 | 48 | Open |
| 1186 | 2018-01-22 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 8.2 | Marcin Sieciechowicz | Jan Kokoszczynski | 1-0 | 26 | Open |
| 1187 | 2018-01-21 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 7.2 | Stanislaw Praczukowski | Marcin Sieciechowicz | 0-1 | 18 | Open |
| 1188 | 2018-01-20 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 6.1 | Marcin Sieciechowicz | Patryk Chylewski | 1/2-1/2 | 49 | Open |
| 1189 | 2018-01-19 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 5.1 | Kamil Nowak | Marcin Sieciechowicz | 1/2-1/2 | 60 | Open |
| 1190 | 2018-01-18 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 4.1 | Marcin Sieciechowicz | Piotr Goluch | 1/2-1/2 | 40 | Open |
| 1191 | 2018-01-17 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 3.1 | Marcin Krzyzanowski | Marcin Sieciechowicz | 0-1 | 44 | Open |
| 1192 | 2018-01-17 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 2.2 | Marcin Sieciechowicz | Michal Fiedorek | 1-0 | 41 | Open |
| 1193 | 2018-01-16 | 11th Gora Sw. Anny Open | Gora Swietej Anny POL | 1.2 | Katarzyna Dwilewicz | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 1194 | 2017-12-31 | XXXVI Zamenhofa Mem | Bialystok POL | 9.1 | Damian Lewtak | Marcin Sieciechowicz | 1-0 | 54 | Open |
| 1195 | 2017-12-30 | XXXVI Zamenhofa Mem | Bialystok POL | 8.6 | Marcin Sieciechowicz | Piotr Bobras | 0-1 | 46 | Open |
| 1196 | 2017-12-30 | XXXVI Zamenhofa Mem | Bialystok POL | 7.11 | Arkadiusz Leniart | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 1197 | 2017-12-29 | XXXVI Zamenhofa Mem | Bialystok POL | 6.14 | Marcin Sieciechowicz | Radoslaw Dzierzak | 1-0 | 41 | Open |
| 1198 | 2017-12-29 | XXXVI Zamenhofa Mem | Bialystok POL | 5.8 | Maciej Klekowski | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 1199 | 2017-12-28 | XXXVI Zamenhofa Mem | Bialystok POL | 4.18 | Marcin Sieciechowicz | Jakub Szostko | 1/2-1/2 | 63 | Open |
| 1200 | 2017-12-28 | XXXVI Zamenhofa Mem | Bialystok POL | 3.5 | Tomasz Markowski | Marcin Sieciechowicz | 1-0 | 39 | Open |
| 1201 | 2017-12-27 | XXXVI Zamenhofa Mem | Bialystok POL | 2.1 | Marcin Sieciechowicz | Igor Kovalenko | 1/2-1/2 | 89 | Open |
| 1202 | 2017-12-27 | XXXVI Zamenhofa Mem | Bialystok POL | 1.24 | Artur Hrymowicz | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 1203 | 2017-12-17 | European Rapid 2017 | Katowice POL | 9.24 | Marcin Sieciechowicz | Kiril Georgiev | 0-1 | 74 | Open |
| 1204 | 2017-12-17 | European Rapid 2017 | Katowice POL | 8.27 | Marcin Sieciechowicz | Alexei Fedorov | 1/2-1/2 | 65 | Open |
| 1205 | 2017-12-17 | European Rapid 2017 | Katowice POL | 7.24 | Adrian Mikhalchishin | Marcin Sieciechowicz | 1/2-1/2 | 37 | Open |
| 1206 | 2017-12-17 | European Rapid 2017 | Katowice POL | 11.77 | Marcin Sieciechowicz | Kacper Tomaszewski | 1-0 | 35 | Open |
| 1207 | 2017-12-17 | European Rapid 2017 | Katowice POL | 10.72 | Jacek Orzechowski | Marcin Sieciechowicz | 1/2-1/2 | 69 | Open |
| 1208 | 2017-12-16 | European Rapid 2017 | Katowice POL | 6.22 | Marcin Sieciechowicz | Nikita Meshkovs | 1/2-1/2 | 123 | Open |
| 1209 | 2017-12-16 | European Rapid 2017 | Katowice POL | 5.24 | Evgeny Alekseev | Marcin Sieciechowicz | 0-1 | 38 | Open |
| 1210 | 2017-12-16 | European Rapid 2017 | Katowice POL | 4.73 | Marcin Sieciechowicz | Jacek Stachanczyk | 1-0 | 40 | Open |
| 1211 | 2017-12-16 | European Rapid 2017 | Katowice POL | 3.83 | Elena Krasenkowa | Marcin Sieciechowicz | 1/2-1/2 | 90 | Open |
| 1212 | 2017-12-16 | European Rapid 2017 | Katowice POL | 2.97 | Marcin Sieciechowicz | Piotr Meller | 1-0 | 29 | Open |
| 1213 | 2017-12-16 | European Rapid 2017 | Katowice POL | 1.1 | Olaf Bartoszewski-Reiski | Marcin Sieciechowicz | 0-1 | 52 | Open |
| 1214 | 2017-12-15 | European Blitz 2017 | Katowice POL | 9.63 | Marcin Sieciechowicz | Michal Cieslar | 1/2-1/2 | 72 | Open |
| 1215 | 2017-12-15 | European Blitz 2017 | Katowice POL | 6.1 | Alexander Maslak | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 1216 | 2017-12-15 | European Blitz 2017 | Katowice POL | 5.1 | Marcin Sieciechowicz | Alexander Maslak | 1-0 | 36 | Open |
| 1217 | 2017-12-15 | European Blitz 2017 | Katowice POL | 4.91 | Marcin Sieciechowicz | Filip Michalski | 1-0 | 37 | Open |
| 1218 | 2017-12-15 | European Blitz 2017 | Katowice POL | 3.91 | Filip Michalski | Marcin Sieciechowicz | 1/2-1/2 | 46 | Open |
| 1219 | 2017-12-15 | European Blitz 2017 | Katowice POL | 22.28 | Marcin Sieciechowicz | Maciej Klekowski | 0-1 | 45 | Open |
| 1220 | 2017-12-15 | European Blitz 2017 | Katowice POL | 21.28 | Maciej Klekowski | Marcin Sieciechowicz | 1-0 | 51 | Open |
| 1221 | 2017-12-15 | European Blitz 2017 | Katowice POL | 20.64 | Karol Jaroch | Marcin Sieciechowicz | 0-1 | 84 | Open |
| 1222 | 2017-12-15 | European Blitz 2017 | Katowice POL | 19.64 | Marcin Sieciechowicz | Karol Jaroch | 1-0 | 61 | Open |
| 1223 | 2017-12-15 | European Blitz 2017 | Katowice POL | 18.76 | Marcin Sieciechowicz | Maciej Mroziak | 1-0 | 33 | Open |
| 1224 | 2017-12-15 | European Blitz 2017 | Katowice POL | 17.76 | Maciej Mroziak | Marcin Sieciechowicz | 1/2-1/2 | 74 | Open |
| 1225 | 2017-12-15 | European Blitz 2017 | Katowice POL | 10.63 | Michal Cieslar | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 1226 | 2017-12-15 | European Blitz 2017 | Katowice POL | 1.95 | Mariusz Wojkowski | Marcin Sieciechowicz | 1-0 | 36 | Open |
| 1227 | 2017-12-13 | 33rd Voivoda Cup 2017 | Legnica POL | 9.4 | Marcin Sieciechowicz | Pavel Simacek | 1/2-1/2 | 23 | Open |
| 1228 | 2017-12-12 | 33rd Voivoda Cup 2017 | Legnica POL | 8.2 | Mikhail Simantsev | Marcin Sieciechowicz | 1/2-1/2 | 25 | Open |
| 1229 | 2017-12-11 | 33rd Voivoda Cup 2017 | Legnica POL | 7.5 | Marcin Sieciechowicz | Mikolaj Tomczak | 1/2-1/2 | 31 | Open |
| 1230 | 2017-12-11 | 33rd Voivoda Cup 2017 | Legnica POL | 6.1 | Pawel Teclaf | Marcin Sieciechowicz | 1/2-1/2 | 30 | Open |
| 1231 | 2017-12-10 | 33rd Voivoda Cup 2017 | Legnica POL | 5.5 | Lukasz Cyborowski | Marcin Sieciechowicz | 1/2-1/2 | 38 | Open |
| 1232 | 2017-12-09 | 33rd Voivoda Cup 2017 | Legnica POL | 4.2 | Marcin Sieciechowicz | Alexey Kislinsky | 1-0 | 40 | Open |
| 1233 | 2017-12-08 | 33rd Voivoda Cup 2017 | Legnica POL | 3.4 | Pawel Czarnota | Marcin Sieciechowicz | 1-0 | 32 | Open |
| 1234 | 2017-12-08 | 33rd Voivoda Cup 2017 | Legnica POL | 2.3 | Marcin Sieciechowicz | Tadeas Kriebel | 1/2-1/2 | 53 | Open |
| 1235 | 2017-12-07 | 33rd Voivoda Cup 2017 | Legnica POL | 1.3 | Kacper Grela | Marcin Sieciechowicz | 0-1 | 35 | Open |
| 1236 | 2017-11-26 | TCh-POL Ekstraliga 2017 | Poland POL | 9.5 | Oskar Wieczorek | Marcin Sieciechowicz | 1-0 | 56 | Open |
| 1237 | 2017-11-25 | TCh-POL Ekstraliga 2017 | Poland POL | 8.5 | Marcin Sieciechowicz | Bartosz Socko | 1/2-1/2 | 39 | Open |
| 1238 | 2017-11-24 | TCh-POL Ekstraliga 2017 | Poland POL | 7.5 | Radoslaw Barski | Marcin Sieciechowicz | 1-0 | 52 | Open |
| 1239 | 2017-10-01 | TCh-POL Ekstraliga 2017 | Poland POL | 6.4 | Mateusz Paszewski | Marcin Sieciechowicz | 1/2-1/2 | 37 | Open |
| 1240 | 2017-09-30 | TCh-POL Ekstraliga 2017 | Poland POL | 5.4 | Marcin Sieciechowicz | Bartlomiej Heberla | 1/2-1/2 | 39 | Open |
| 1241 | 2017-09-29 | TCh-POL Ekstraliga 2017 | Poland POL | 4.4 | Tomasz Warakomski | Marcin Sieciechowicz | 1/2-1/2 | 53 | Open |
| 1242 | 2017-08-27 | 25th Poznan Open 2017 | Poznan POL | 9.5 | Mateusz Malaczek | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 1243 | 2017-08-25 | 25th Poznan Open 2017 | Poznan POL | 7.3 | Rafal Nowak | Marcin Sieciechowicz | 1-0 | 0 | Open |
| 1244 | 2017-08-24 | 25th Poznan Open 2017 | Poznan POL | 6.4 | Marcin Sieciechowicz | Ihor Zadymov | 1/2-1/2 | 38 | Open |
| 1245 | 2017-08-23 | 25th Poznan Open 2017 | Poznan POL | 5.4 | Krzysztof Raczynski | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1246 | 2017-08-22 | 25th Poznan Open 2017 | Poznan POL | 4.4 | Marcin Sieciechowicz | Jacek Orzechowski | 1-0 | 28 | Open |
| 1247 | 2017-08-21 | 25th Poznan Open 2017 | Poznan POL | 3.4 | Tomasz Motyl | Marcin Sieciechowicz | 1/2-1/2 | 110 | Open |
| 1248 | 2017-08-20 | 25th Poznan Open 2017 | Poznan POL | 2.4 | Marcin Sieciechowicz | Hubert Niemier | 1-0 | 27 | Open |
| 1249 | 2017-08-20 | 25th Poznan Open 2017 | Poznan POL | 1.4 | Jacek Kwiatkowski | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 1250 | 2017-08-15 | Wroclaw Open 2017 | Wroclaw POL | 9.4 | Marcin Sieciechowicz | Karol Kucza | 1/2-1/2 | 30 | Open |
| 1251 | 2017-08-14 | Wroclaw Open 2017 | Wroclaw POL | 8.1 | Artem Omelja | Marcin Sieciechowicz | 1/2-1/2 | 6 | Open |
| 1252 | 2017-08-14 | Wroclaw Open 2017 | Wroclaw POL | 7.4 | Marcin Sieciechowicz | Filip Dowgird | 1-0 | 38 | Open |
| 1253 | 2017-08-13 | Wroclaw Open 2017 | Wroclaw POL | 6.3 | Marcin Sieciechowicz | Ashvin Sivakumar | 1/2-1/2 | 17 | Open |
| 1254 | 2017-08-12 | Wroclaw Open 2017 | Wroclaw POL | 5.2 | Maciej Swicarz | Marcin Sieciechowicz | 1/2-1/2 | 56 | Open |
| 1255 | 2017-08-12 | Wroclaw Open 2017 | Wroclaw POL | 4.2 | Marcin Sieciechowicz | Ihor Vypkhaniuk | 1/2-1/2 | 23 | Open |
| 1256 | 2017-08-11 | Wroclaw Open 2017 | Wroclaw POL | 3.3 | Piotr Jagodzinski | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 1257 | 2017-08-11 | Wroclaw Open 2017 | Wroclaw POL | 2.4 | Marcin Sieciechowicz | Ronald Van der Veen | 1-0 | 37 | Open |
| 1258 | 2017-08-10 | Wroclaw Open 2017 | Wroclaw POL | 1.4 | Jakub Pietraszko | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 1259 | 2017-05-07 | TCh-POL Ekstraliga 2017 | Gorzow Wielkopolski POL | 3.4 | Marcin Sieciechowicz | Zbigniew Pakleza | 0-1 | 67 | Open |
| 1260 | 2017-05-06 | TCh-POL Ekstraliga 2017 | Gorzow Wielkopolski POL | 2.4 | Miroslaw Jaworski | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 1261 | 2017-05-05 | TCh-POL Ekstraliga 2017 | Gorzow Wielkopolski POL | 1.4 | Marcin Sieciechowicz | Filip Cukrowski | 1/2-1/2 | 45 | Open |
| 1262 | 2017-01-04 | 27th Cracovia Open A | Krakow POL | 9.11 | Marcin Sieciechowicz | Lukasz Zaleski | 1-0 | 27 | Open |
| 1263 | 2017-01-03 | 27th Cracovia Open A | Krakow POL | 8.5 | Alexander Zubarev | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 1264 | 2017-01-02 | 27th Cracovia Open A | Krakow POL | 7.5 | Marcin Sieciechowicz | Michal Matuszewski | 1/2-1/2 | 28 | Open |
| 1265 | 2016-12-31 | 27th Cracovia Open A | Krakow POL | 6.8 | Piotr Goluch | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 1266 | 2016-12-30 | 27th Cracovia Open A | Krakow POL | 5.8 | Marcin Sieciechowicz | Szymon Gumularz | 1/2-1/2 | 32 | Open |
| 1267 | 2016-12-29 | 27th Cracovia Open A | Krakow POL | 4.7 | Arkadiusz Skawinski | Marcin Sieciechowicz | 1/2-1/2 | 33 | Open |
| 1268 | 2016-12-29 | 27th Cracovia Open A | Krakow POL | 3.12 | Marcin Sieciechowicz | Nataliya Buksa | 1-0 | 61 | Open |
| 1269 | 2016-12-28 | 27th Cracovia Open A | Krakow POL | 2.1 | Alexander Chernyavsky | Marcin Sieciechowicz | 1/2-1/2 | 42 | Open |
| 1270 | 2016-12-27 | 27th Cracovia Open A | Krakow POL | 1.15 | Marcin Sieciechowicz | Mariia Berdnyk | 1-0 | 23 | Open |
| 1271 | 2016-11-30 | XXXII Lower Silesia Cup | Legnica POL | 9.2 | Marcin Sieciechowicz | Tadeas Kriebel | 1/2-1/2 | 19 | Open |
| 1272 | 2016-11-29 | XXXII Lower Silesia Cup | Legnica POL | 8.4 | Igor Janik | Marcin Sieciechowicz | 0-1 | 59 | Open |
| 1273 | 2016-11-28 | XXXII Lower Silesia Cup | Legnica POL | 7.3 | Marcin Sieciechowicz | Marcel Kanarek | 1/2-1/2 | 47 | Open |
| 1274 | 2016-11-28 | XXXII Lower Silesia Cup | Legnica POL | 6.3 | Pavel Simacek | Marcin Sieciechowicz | 1-0 | 67 | Open |
| 1275 | 2016-11-27 | XXXII Lower Silesia Cup | Legnica POL | 5.4 | Marcin Sieciechowicz | Tomasz Warakomski | 0-1 | 42 | Open |
| 1276 | 2016-11-26 | XXXII Lower Silesia Cup | Legnica POL | 4.2 | Piotr Sabuk | Marcin Sieciechowicz | 1-0 | 38 | Open |
| 1277 | 2016-11-25 | XXXII Lower Silesia Cup | Legnica POL | 3.5 | Marcin Sieciechowicz | Petro Golubka | 1/2-1/2 | 33 | Open |
| 1278 | 2016-11-25 | XXXII Lower Silesia Cup | Legnica POL | 2.1 | Pawel Czarnota | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 1279 | 2016-11-24 | XXXII Lower Silesia Cup | Legnica POL | 1.5 | 14100690 | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 1280 | 2016-10-09 | TCh-POL Ekstraliga 2016 | Poland POL | 9.4 | Grzegorz Gajewski | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 1281 | 2016-10-08 | TCh-POL Ekstraliga 2016 | Poland POL | 8.4 | Marcin Sieciechowicz | Maciej Nurkiewicz | 1-0 | 39 | Open |
| 1282 | 2016-10-07 | TCh-POL Ekstraliga 2016 | Poland POL | 7.4 | Artur Jakubiec | Marcin Sieciechowicz | 1/2-1/2 | 49 | Open |
| 1283 | 2016-09-25 | TCh-POL Ekstraliga 2016 | Poland POL | 6.3 | Marcin Sieciechowicz | Tomasz Warakomski | 1/2-1/2 | 26 | Open |
| 1284 | 2016-09-24 | TCh-POL Ekstraliga 2016 | Poland POL | 5.2 | Michal Krasenkow | Marcin Sieciechowicz | 1-0 | 63 | Open |
| 1285 | 2016-09-23 | TCh-POL Ekstraliga 2016 | Poland POL | 4.2 | Marcin Sieciechowicz | Dariusz Mikrut | 0-1 | 34 | Open |
| 1286 | 2016-09-18 | 6th Dziedzica Mem 2016 | Trzcianka POL | 8.7 | Kacper Tomaszewski | Marcin Sieciechowicz | 1-0 | 101 | Open |
| 1287 | 2016-09-18 | 6th Dziedzica Mem 2016 | Trzcianka POL | 7.4 | Marcin Sieciechowicz | Robert Kempinski | 1/2-1/2 | 47 | Open |
| 1288 | 2016-09-18 | 6th Dziedzica Mem 2016 | Trzcianka POL | 6.3 | Kamil Dragun | Marcin Sieciechowicz | 1/2-1/2 | 52 | Open |
| 1289 | 2016-09-18 | 6th Dziedzica Mem 2016 | Trzcianka POL | 5.6 | Marcin Sieciechowicz | Piotr Jagodzinski | 1-0 | 87 | Open |
| 1290 | 2016-09-18 | 6th Dziedzica Mem 2016 | Trzcianka POL | 4.5 | Bartlomiej Heberla | Marcin Sieciechowicz | 1/2-1/2 | 60 | Open |
| 1291 | 2016-08-15 | 24th Poznan Open 2016 | Poznan POL | 9.2 | Radoslaw Barski | Marcin Sieciechowicz | 1/2-1/2 | 24 | Open |
| 1292 | 2016-08-14 | 24th Poznan Open 2016 | Poznan POL | 8.4 | Marcin Sieciechowicz | Dariusz Fraczek | 1-0 | 39 | Open |
| 1293 | 2016-08-13 | 24th Poznan Open 2016 | Poznan POL | 7.4 | Damian Bartkowiak | Marcin Sieciechowicz | 1/2-1/2 | 34 | Open |
| 1294 | 2016-08-13 | 24th Poznan Open 2016 | Poznan POL | 6.3 | Marcin Sieciechowicz | Oskar Woloch | 1/2-1/2 | 25 | Open |
| 1295 | 2016-08-12 | 24th Poznan Open 2016 | Poznan POL | 5.2 | Pawel Musialkiewicz | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 1296 | 2016-08-11 | 24th Poznan Open 2016 | Poznan POL | 4.3 | Marcin Sieciechowicz | Ihor Zadymov | 1/2-1/2 | 56 | Open |
| 1297 | 2016-08-10 | 24th Poznan Open 2016 | Poznan POL | 3.3 | Witoslaw Walkusz | Marcin Sieciechowicz | 0-1 | 23 | Open |
| 1298 | 2016-08-09 | 24th Poznan Open 2016 | Poznan POL | 2.3 | Marcin Sieciechowicz | Lukasz Kaluzny | 1-0 | 40 | Open |
| 1299 | 2016-08-08 | 24th Poznan Open 2016 | Poznan POL | 1.3 | Przemyslaw Lesien | Marcin Sieciechowicz | 0-1 | 45 | Open |
| 1300 | 2016-07-16 | Najdorf Mem Open A 2016 | Warsaw POL | 9.42 | Marcin Molenda | Marcin Sieciechowicz | 1/2-1/2 | 43 | Open |
| 1301 | 2016-07-15 | Najdorf Mem Open A 2016 | Warsaw POL | 8.32 | Marcin Sieciechowicz | Anna Warakomska | 0-1 | 60 | Open |
| 1302 | 2016-07-14 | Najdorf Mem Open A 2016 | Warsaw POL | 7.42 | Pall A. Thorarinsson | Marcin Sieciechowicz | 0-1 | 42 | Open |
| 1303 | 2016-07-13 | Najdorf Mem Open A 2016 | Warsaw POL | 6.43 | Marcin Sieciechowicz | Ewa Harazinska | 1/2-1/2 | 34 | Open |
| 1304 | 2016-07-12 | Najdorf Mem Open A 2016 | Warsaw POL | 5.44 | Kacper Polok | Marcin Sieciechowicz | 1/2-1/2 | 24 | Open |
| 1305 | 2016-07-11 | Najdorf Mem Open A 2016 | Warsaw POL | 4.36 | Marcin Sieciechowicz | Julian Martin | 0-1 | 44 | Open |
| 1306 | 2016-07-10 | Najdorf Mem Open A 2016 | Warsaw POL | 3.13 | Milos Perunovic | Marcin Sieciechowicz | 1-0 | 41 | Open |
| 1307 | 2016-07-09 | Najdorf Mem Open A 2016 | Warsaw POL | 2.13 | Marcin Sieciechowicz | Alexandr Fier | 1/2-1/2 | 40 | Open |
| 1308 | 2016-07-08 | Najdorf Mem Open A 2016 | Warsaw POL | 1.52 | Maciej Cajbel | Marcin Sieciechowicz | 0-1 | 49 | Open |
| 1309 | 2016-06-26 | TCh-POL Ekstraliga 2016 | Poland POL | 3.5 | Andrei Maksimenko | Marcin Sieciechowicz | 1/2-1/2 | 32 | Open |
| 1310 | 2016-06-25 | TCh-POL Ekstraliga 2016 | Poland POL | 2.1 | Marcin Sieciechowicz | Dimitrios Mastrovasilis | 0-1 | 57 | Open |
| 1311 | 2016-06-24 | TCh-POL Ekstraliga 2016 | Poland POL | 1.3 | Marcin Sieciechowicz | Piotr Brodowski | 0-1 | 43 | Open |
| 1312 | 2015-11-25 | 31st Voivoda Cup 2015 | Legnica POL | 9.1 | Kamil Stachowiak | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 1313 | 2015-11-24 | 31st Voivoda Cup 2015 | Legnica POL | 8.1 | Marcin Sieciechowicz | Kirill Stupak | 1/2-1/2 | 50 | Open |
| 1314 | 2015-11-23 | 31st Voivoda Cup 2015 | Legnica POL | 7.1 | Andrei Kovalev | Marcin Sieciechowicz | 1/2-1/2 | 47 | Open |
| 1315 | 2015-11-23 | 31st Voivoda Cup 2015 | Legnica POL | 6.1 | Marcin Sieciechowicz | Alexander Donchenko | 0-1 | 43 | Open |
| 1316 | 2015-11-22 | 31st Voivoda Cup 2015 | Legnica POL | 5.1 | Piotr Sabuk | Marcin Sieciechowicz | 1-0 | 46 | Open |
| 1317 | 2015-11-21 | 31st Voivoda Cup 2015 | Legnica POL | 4.1 | Marcin Sieciechowicz | Radoslaw Gajek | 1-0 | 27 | Open |
| 1318 | 2015-11-20 | 31st Voivoda Cup 2015 | Legnica POL | 3.1 | Tomasz Warakomski | Marcin Sieciechowicz | 1-0 | 45 | Open |
| 1319 | 2015-11-20 | 31st Voivoda Cup 2015 | Legnica POL | 2.1 | Marcin Sieciechowicz | Marcel Kanarek | 0-1 | 55 | Open |
| 1320 | 2015-11-19 | 31st Voivoda Cup 2015 | Legnica POL | 1.1 | Pavel Simacek | Marcin Sieciechowicz | 1/2-1/2 | 104 | Open |
| 1321 | 2015-09-13 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 9.14 | Marcin Sieciechowicz | Pavel Shkapenko | 1/2-1/2 | 62 | Open |
| 1322 | 2015-09-12 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 8.2 | Marcin Szelag | Marcin Sieciechowicz | 1-0 | 65 | Open |
| 1323 | 2015-09-11 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 7.8 | Marcin Sieciechowicz | Pawel Stoma | 1/2-1/2 | 24 | Open |
| 1324 | 2015-09-10 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 6.26 | Piotr Lach | Marcin Sieciechowicz | 0-1 | 40 | Open |
| 1325 | 2015-09-09 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 5.2 | Artur Jakubiec | Marcin Sieciechowicz | 1/2-1/2 | 15 | Open |
| 1326 | 2015-09-08 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 4.26 | Marcin Sieciechowicz | Piotr Piesik | 1-0 | 56 | Open |
| 1327 | 2015-09-07 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 3.8 | Eneasz Wiewiora | Marcin Sieciechowicz | 1-0 | 60 | Open |
| 1328 | 2015-09-06 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 2.2 | Marcin Sieciechowicz | Maciej Nurkiewicz | 1/2-1/2 | 43 | Open |
| 1329 | 2015-09-05 | TCh-POL 1st League 2015 | Jastrzebia Gora POL | 1.14 | Michal Luch | Marcin Sieciechowicz | 1/2-1/2 | 31 | Open |
| 1330 | 2015-08-17 | 23rd Poznan Open 2015 | Poznan POL | 9.1 | Marcin Sieciechowicz | 14100177 | 1-0 | 26 | Open |
| 1331 | 2015-08-16 | 23rd Poznan Open 2015 | Poznan POL | 8.3 | Krzysztof Chojnacki | Marcin Sieciechowicz | 0-1 | 55 | Open |
| 1332 | 2015-08-15 | 23rd Poznan Open 2015 | Poznan POL | 7.3 | Marcin Sieciechowicz | Dawid Niekras | 0 | Open | |
| 1333 | 2015-08-15 | 23rd Poznan Open 2015 | Poznan POL | 6.1 | Vitali Koziak | Marcin Sieciechowicz | 1-0 | 44 | Open |
| 1334 | 2015-08-14 | 23rd Poznan Open 2015 | Poznan POL | 5.3 | Marcin Sieciechowicz | Damian Lewtak | 1-0 | 57 | Open |
| 1335 | 2015-08-13 | 23rd Poznan Open 2015 | Poznan POL | 4.4 | Radoslaw Dzierzak | Marcin Sieciechowicz | 0-1 | 24 | Open |
| 1336 | 2015-08-12 | 23rd Poznan Open 2015 | Poznan POL | 3.9 | Marcin Sieciechowicz | Jaroslaw Hemmerling | 1-0 | 27 | Open |
| 1337 | 2015-08-11 | 23rd Poznan Open 2015 | Poznan POL | 2.4 | Tomasz Kaluzny | Marcin Sieciechowicz | 1/2-1/2 | 53 | Open |
| 1338 | 2015-08-10 | 23rd Poznan Open 2015 | Poznan POL | 1.4 | Marcin Sieciechowicz | Karolina Jarmuzek | 1-0 | 21 | Open |
| 1339 | 2015-07-09 | 10th Wroclaw Open A 2015 | Wroclaw POL | 9.3 | Szymon Gumularz | Marcin Sieciechowicz | 1/2-1/2 | 14 | Open |
| 1340 | 2015-07-08 | 10th Wroclaw Open A 2015 | Wroclaw POL | 8.4 | Marcin Sieciechowicz | Szymon Kulas | 1-0 | 33 | Open |
| 1341 | 2015-07-07 | 10th Wroclaw Open A 2015 | Wroclaw POL | 7.2 | Kamil Stachowiak | Marcin Sieciechowicz | 1-0 | 53 | Open |
| 1342 | 2015-07-06 | 10th Wroclaw Open A 2015 | Wroclaw POL | 6.1 | Marcin Sieciechowicz | Lukasz Cyborowski | 1/2-1/2 | 6 | Open |
| 1343 | 2015-07-06 | 10th Wroclaw Open A 2015 | Wroclaw POL | 5.2 | Kacper Grela | Marcin Sieciechowicz | 0-1 | 57 | Open |
| 1344 | 2015-07-05 | 10th Wroclaw Open A 2015 | Wroclaw POL | 4.2 | Marcin Sieciechowicz | Piotr Dobrowolski | 1/2-1/2 | 23 | Open |
| 1345 | 2015-07-04 | 10th Wroclaw Open A 2015 | Wroclaw POL | 3.1 | Christof Sielecki | Marcin Sieciechowicz | 1/2-1/2 | 20 | Open |
| 1346 | 2015-07-04 | 10th Wroclaw Open A 2015 | Wroclaw POL | 2.1 | Marcin Sieciechowicz | Maciej Swicarz | 1-0 | 31 | Open |
| 1347 | 2015-07-03 | 10th Wroclaw Open A 2015 | Wroclaw POL | 1.2 | Wojciech Reza | Marcin Sieciechowicz | 0-1 | 51 | Open |
| 1348 | 2015-04-19 | 5th Dziedzica Mem 2015 | Trzcianka POL | 9.8 | Arkadij Naiditsch | Marcin Sieciechowicz | 1-0 | 48 | Open |
| 1349 | 2015-04-19 | 5th Dziedzica Mem 2015 | Trzcianka POL | 4.4 | Volodymyr Onyshchuk | Marcin Sieciechowicz | 1-0 | 52 | Open |
| 1350 | 2015-04-01 | ch-POL 2015 | Poznan POL | 9.5 | Mateusz Bartel | Marcin Sieciechowicz | 1-0 | 28 | Open |
| 1351 | 2015-03-31 | ch-POL 2015 | Poznan POL | 8.5 | Kacper Piorun | Marcin Sieciechowicz | 1-0 | 45 | Open |
| 1352 | 2015-03-30 | ch-POL 2015 | Poznan POL | 7.7 | Marcin Sieciechowicz | Pawel Weichhold | 1-0 | 40 | Open |
| 1353 | 2015-03-29 | ch-POL 2015 | Poznan POL | 6.8 | Marcin Krysztofiak | Marcin Sieciechowicz | 0-1 | 72 | Open |
| 1354 | 2015-03-28 | ch-POL 2015 | Poznan POL | 5.7 | Marcin Sieciechowicz | Aleksander Mista | 1/2-1/2 | 43 | Open |
| 1355 | 2015-03-27 | ch-POL 2015 | Poznan POL | 4.5 | Marcin Sieciechowicz | Jan-Krzysztof Duda | 0-1 | 61 | Open |
| 1356 | 2015-03-26 | ch-POL 2015 | Poznan POL | 3.1 | Wojciech Przybylski | Marcin Sieciechowicz | 0-1 | 50 | Open |
| 1357 | 2015-03-25 | ch-POL 2015 | Poznan POL | 2.1 | Marcin Sieciechowicz | Arkadiusz Skawinski | 1/2-1/2 | 50 | Open |
| 1358 | 2015-03-24 | ch-POL 2015 | Poznan POL | 1.3 | Bartosz Socko | Marcin Sieciechowicz | 1-0 | 80 | Open |
| 1359 | 2014-12-21 | European Rapid 2014 | Wroclaw POL | 9.56 | Marcin Sieciechowicz | Piotr Jagodzinski | 1-0 | 23 | Open |
| 1360 | 2014-12-21 | European Rapid 2014 | Wroclaw POL | 11.58 | Marcin Sieciechowicz | Tomasz Strozyk | 1-0 | 44 | Open |
| 1361 | 2014-12-21 | European Rapid 2014 | Wroclaw POL | 10.31 | Michal Krasenkow | Marcin Sieciechowicz | 1-0 | 65 | Open |
| 1362 | 2014-12-20 | European Rapid 2014 | Wroclaw POL | 7.33 | Marcin Sieciechowicz | Anton Korobov | 0-1 | 50 | Open |
| 1363 | 2014-12-20 | European Rapid 2014 | Wroclaw POL | 6.17 | Bartosz Socko | Marcin Sieciechowicz | 1/2-1/2 | 48 | Open |
| 1364 | 2014-12-20 | European Rapid 2014 | Wroclaw POL | 5.61 | Marcin Sieciechowicz | Vadim Pischikov | 1-0 | 41 | Open |
| 1365 | 2014-12-19 | European Blitz 2014 | Wroclaw POL | 3.2 | Olexandr Bortnyk | Marcin Sieciechowicz | 1-0 | 40 | Open |
| 1366 | 2014-12-19 | European Blitz 2014 | Wroclaw POL | 3.1 | Marcin Sieciechowicz | Olexandr Bortnyk | 0-1 | 46 | Open |
| 1367 | 2014-11-26 | XXX Lower Silesia Cup | Legnica POL | 9.3 | Marcin Sieciechowicz | 14100690 | 1-0 | 29 | Open |
| 1368 | 2014-11-25 | XXX Lower Silesia Cup | Legnica POL | 8.3 | Pavel Simacek | Marcin Sieciechowicz | 1-0 | 37 | Open |
| 1369 | 2014-11-24 | XXX Lower Silesia Cup | Legnica POL | 7.4 | Marcin Sieciechowicz | Pawel Czarnota | 1/2-1/2 | 31 | Open |
| 1370 | 2014-11-24 | XXX Lower Silesia Cup | Legnica POL | 6.2 | Piotr Sabuk | Marcin Sieciechowicz | 0-1 | 29 | Open |
| 1371 | 2014-11-23 | XXX Lower Silesia Cup | Legnica POL | 5.5 | Marcin Sieciechowicz | Radoslaw Gajek | 1-0 | 51 | Open |
| 1372 | 2014-11-22 | XXX Lower Silesia Cup | Legnica POL | 4.1 | Tadeas Kriebel | Marcin Sieciechowicz | 0-1 | 54 | Open |
| 1373 | 2014-11-21 | XXX Lower Silesia Cup | Legnica POL | 3.5 | Kamil Stachowiak | Marcin Sieciechowicz | 1-0 | 56 | Open |
| 1374 | 2014-11-21 | XXX Lower Silesia Cup | Legnica POL | 2.2 | Marcin Sieciechowicz | Tomas Oral | 0-1 | 24 | Open |
| 1375 | 2014-11-20 | XXX Lower Silesia Cup | Legnica POL | 1.4 | Lukasz Cyborowski | Marcin Sieciechowicz | 1/2-1/2 | 47 | Open |
| 1376 | 2014-09-07 | TCh-POL 1st League 2014 | Poronin POL | 9.2 | Krzysztof Jakubowski | Marcin Sieciechowicz | 1-0 | 34 | Open |
| 1377 | 2014-09-06 | TCh-POL 1st League 2014 | Poronin POL | 8.5 | Marcin Sieciechowicz | Dawid Janaszak | 1-0 | 42 | Open |
| 1378 | 2014-09-05 | TCh-POL 1st League 2014 | Poronin POL | 7.1 | Marcin Sieciechowicz | Orest Gritsak | 1/2-1/2 | 25 | Open |
| 1379 | 2014-09-04 | TCh-POL 1st League 2014 | Poronin POL | 6.5 | Michal Obrusnik | Marcin Sieciechowicz | 0-1 | 47 | Open |
| 1380 | 2014-09-03 | TCh-POL 1st League 2014 | Poronin POL | 5.2 | Marcin Sieciechowicz | Marek Kosiorek | 1/2-1/2 | 41 | Open |
| 1381 | 2014-09-03 | TCh-POL 1st League 2014 | Poronin POL | 4.4 | Vojtech Zwardon | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1382 | 2014-09-01 | TCh-POL 1st League 2014 | Poronin POL | 3.3 | Marcin Sieciechowicz | Tomasz Markowski | 1-0 | 36 | Open |
| 1383 | 2014-09-01 | TCh-POL 1st League 2014 | Poronin POL | 2.3 | Krzysztof Chojnacki | Marcin Sieciechowicz | 1/2-1/2 | 63 | Open |
| 1384 | 2014-08-31 | TCh-POL 1st League 2014 | Poronin POL | 1.4 | Marcin Sieciechowicz | Daniel Sadzikowski | 0-1 | 38 | Open |
| 1385 | 2014-07-25 | 5th Terre degli Elimi Open 2014 | Erice ITA | 9.4 | Marcin Sieciechowicz | Vladimir Petkov | 1-0 | 34 | Open |
| 1386 | 2014-07-24 | 5th Terre degli Elimi Open 2014 | Erice ITA | 8.8 | Marcin Sieciechowicz | Karsten Larsen | 1-0 | 73 | Open |
| 1387 | 2014-07-23 | 5th Terre degli Elimi Open 2014 | Erice ITA | 7.9 | Mischa Senders | Marcin Sieciechowicz | 0-1 | 31 | Open |
| 1388 | 2014-07-23 | 5th Terre degli Elimi Open 2014 | Erice ITA | 6.6 | Martijn Van der Eijk | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 1389 | 2014-07-22 | 5th Terre degli Elimi Open 2014 | Erice ITA | 5.5 | Marcin Sieciechowicz | Maria Manakova | 1/2-1/2 | 59 | Open |
| 1390 | 2014-07-21 | 5th Terre degli Elimi Open 2014 | Erice ITA | 4.3 | Twan Burg | Marcin Sieciechowicz | 1-0 | 66 | Open |
| 1391 | 2014-07-21 | 5th Terre degli Elimi Open 2014 | Erice ITA | 3.5 | Marcin Sieciechowicz | Arno Bezemer | 1-0 | 38 | Open |
| 1392 | 2014-07-20 | 5th Terre degli Elimi Open 2014 | Erice ITA | 2.5 | Anna Kantane | Marcin Sieciechowicz | 0-1 | 23 | Open |
| 1393 | 2014-07-19 | 5th Terre degli Elimi Open 2014 | Erice ITA | 1.6 | Marcin Sieciechowicz | Pietro Pisacane | 1-0 | 35 | Open |
| 1394 | 2014-06-17 | Chasing GM 2014 | Naklo nad Notecia POL | 9.5 | Nicolai Vesterbaek Pedersen | Marcin Sieciechowicz | 1/2-1/2 | 13 | Open |
| 1395 | 2014-06-16 | Chasing GM 2014 | Naklo nad Notecia POL | 8.2 | Marcin Sieciechowicz | Mikhail Kazakov | 1/2-1/2 | 31 | Open |
| 1396 | 2014-06-15 | Chasing GM 2014 | Naklo nad Notecia POL | 7.4 | Radoslaw Gajek | Marcin Sieciechowicz | 1-0 | 43 | Open |
| 1397 | 2014-06-15 | Chasing GM 2014 | Naklo nad Notecia POL | 6.3 | Marcin Sieciechowicz | Kamil Dragun | 1/2-1/2 | 43 | Open |
| 1398 | 2014-06-15 | Chasing GM 2014 | Naklo nad Notecia POL | 5.3 | Lukasz Licznerski | Marcin Sieciechowicz | 1/2-1/2 | 76 | Open |
| 1399 | 2014-06-15 | Chasing GM 2014 | Naklo nad Notecia POL | 4.4 | Marcin Sieciechowicz | Jacek Tomczak | 1/2-1/2 | 104 | Open |
| 1400 | 2014-06-15 | Chasing GM 2014 | Naklo nad Notecia POL | 3.2 | Vitali Koziak | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1401 | 2014-06-15 | Chasing GM 2014 | Naklo nad Notecia POL | 2.5 | Marcin Sieciechowicz | Rasmus Skytte | 1-0 | 33 | Open |
| 1402 | 2014-06-15 | Chasing GM 2014 | Naklo nad Notecia POL | 1.1 | Marcin Sieciechowicz | Kacper Drozdowski | 1/2-1/2 | 49 | Open |
| 1403 | 2014-06-14 | Chasing GM 2014 | Naklo nad Notecia POL | 6.3 | Marcin Sieciechowicz | Kamil Dragun | 1/2-1/2 | 43 | Open |
| 1404 | 2014-06-13 | Chasing GM 2014 | Naklo nad Notecia POL | 5.3 | Lukasz Licznerski | Marcin Sieciechowicz | 1/2-1/2 | 76 | Open |
| 1405 | 2014-06-12 | Chasing GM 2014 | Naklo nad Notecia POL | 4.4 | Marcin Sieciechowicz | Jacek Tomczak | 1/2-1/2 | 104 | Open |
| 1406 | 2014-06-11 | Chasing GM 2014 | Naklo nad Notecia POL | 3.2 | Vitali Koziak | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1407 | 2014-06-10 | Chasing GM 2014 | Naklo nad Notecia POL | 2.5 | Marcin Sieciechowicz | Rasmus Skytte | 1-0 | 33 | Open |
| 1408 | 2014-06-09 | Chasing GM 2014 | Naklo nad Notecia POL | 1.1 | Marcin Sieciechowicz | Kacper Drozdowski | 1/2-1/2 | 49 | Open |
| 1409 | 2014-04-13 | ch-POL Rapid 2014 | Trzcianka POL | 9.9 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | 60 | Open |
| 1410 | 2014-04-13 | ch-POL Rapid 2014 | Trzcianka POL | 6.1 | Marcin Sieciechowicz | Robert Kempinski | 0-1 | 23 | Open |
| 1411 | 2014-04-13 | ch-POL Rapid 2014 | Trzcianka POL | 3.2 | Alexander Moiseenko | Marcin Sieciechowicz | 1-0 | 33 | Open |
| 1412 | 2014-04-02 | ch-POL 2014 | Warsaw POL | 9.6 | Bartosz Socko | Marcin Sieciechowicz | 1-0 | 58 | Open |
| 1413 | 2014-04-01 | ch-POL 2014 | Warsaw POL | 8.9 | Marcin Sieciechowicz | Oskar Wieczorek | 1-0 | 47 | Open |
| 1414 | 2014-03-31 | ch-POL 2014 | Warsaw POL | 7.9 | Kacper Piorun | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 1415 | 2014-03-30 | ch-POL 2014 | Warsaw POL | 6.1 | Miroslaw Grabarczyk | Marcin Sieciechowicz | 1/2-1/2 | 42 | Open |
| 1416 | 2014-03-29 | ch-POL 2014 | Warsaw POL | 5.1 | Marcin Sieciechowicz | Pawel Weichhold | 1/2-1/2 | 75 | Open |
| 1417 | 2014-03-28 | ch-POL 2014 | Warsaw POL | 4.9 | Krzysztof Jakubowski | Marcin Sieciechowicz | 1-0 | 50 | Open |
| 1418 | 2014-03-27 | ch-POL 2014 | Warsaw POL | 3.1 | Marcin Sieciechowicz | Kamil Stachowiak | 1/2-1/2 | 76 | Open |
| 1419 | 2014-03-26 | ch-POL 2014 | Warsaw POL | 2.11 | Jan Adamski | Marcin Sieciechowicz | 1/2-1/2 | 34 | Open |
| 1420 | 2014-03-25 | ch-POL 2014 | Warsaw POL | 1.8 | Marcin Sieciechowicz | Tomasz Markowski | 0-1 | 70 | Open |
| 1421 | 2014-01-04 | Cracovia Open A 2013-14 | Krakow POL | 9.7 | Mikhail Yarmysty | Marcin Sieciechowicz | 1-0 | 21 | Open |
| 1422 | 2014-01-03 | Cracovia Open A 2013-14 | Krakow POL | 8.11 | Marcin Sieciechowicz | Andrzej Gbyl | 1-0 | 30 | Open |
| 1423 | 2014-01-02 | Cracovia Open A 2013-14 | Krakow POL | 7.5 | Michal Matuszewski | Marcin Sieciechowicz | 1-0 | 46 | Open |
| 1424 | 2013-12-31 | Cracovia Open A 2013-14 | Krakow POL | 6.1 | Marcin Sieciechowicz | Edyta Jakubiec | 1-0 | 48 | Open |
| 1425 | 2013-12-30 | Cracovia Open A 2013-14 | Krakow POL | 5.18 | Konrad Bus | Marcin Sieciechowicz | 0-1 | 49 | Open |
| 1426 | 2013-12-29 | Cracovia Open A 2013-14 | Krakow POL | 4.14 | Marcin Sieciechowicz | Mateusz Dubinski | 1/2-1/2 | 29 | Open |
| 1427 | 2013-12-29 | Cracovia Open A 2013-14 | Krakow POL | 3.9 | Ian D Thompson | Marcin Sieciechowicz | 1-0 | 75 | Open |
| 1428 | 2013-12-28 | Cracovia Open A 2013-14 | Krakow POL | 2.16 | Marcin Sieciechowicz | Silje Bjerke | 1-0 | 44 | Open |
| 1429 | 2013-12-27 | Cracovia Open A 2013-14 | Krakow POL | 1.1 | Roman Mucha | Marcin Sieciechowicz | 1/2-1/2 | 47 | Open |
| 1430 | 2013-12-14 | ch-European Rapid 2013 | Warsaw POL | 4.4 | Bartosz Warszawski | Marcin Sieciechowicz | 1-0 | 30 | Open |
| 1431 | 2013-12-14 | ch-European Rapid 2013 | Warsaw POL | 2.48 | Grzegorz Zareba | Marcin Sieciechowicz | 1/2-1/2 | 94 | Open |
| 1432 | 2013-12-14 | ch-European Rapid 2013 | Warsaw POL | 1.48 | Marcin Sieciechowicz | Stasys Povilaitis | 1-0 | 23 | Open |
| 1433 | 2013-11-27 | 29th Voivoda Cup | Legnica POL | 9 | Piotr Sabuk | Marcin Sieciechowicz | 1/2-1/2 | 93 | Open |
| 1434 | 2013-11-26 | 29th Voivoda Cup | Legnica POL | 8 | Marcin Sieciechowicz | Artur Pieniazek | 1-0 | 42 | Open |
| 1435 | 2013-11-25 | 29th Voivoda Cup | Legnica POL | 7 | Pavel Simacek | Marcin Sieciechowicz | 1-0 | 31 | Open |
| 1436 | 2013-11-25 | 29th Voivoda Cup | Legnica POL | 6 | Marcin Sieciechowicz | Muhammed Batuhan Dastan | 1/2-1/2 | 69 | Open |
| 1437 | 2013-11-24 | 29th Voivoda Cup | Legnica POL | 5 | 14100177 | Marcin Sieciechowicz | 1/2-1/2 | 30 | Open |
| 1438 | 2013-11-23 | 29th Voivoda Cup | Legnica POL | 4 | Marcin Sieciechowicz | Oleg M Romanishin | 1/2-1/2 | 32 | Open |
| 1439 | 2013-11-22 | 29th Voivoda Cup | Legnica POL | 3 | Mikael Agopov | Marcin Sieciechowicz | 0-1 | 69 | Open |
| 1440 | 2013-11-22 | 29th Voivoda Cup | Legnica POL | 2 | Marcin Sieciechowicz | Oskar Wieczorek | 1-0 | 46 | Open |
| 1441 | 2013-11-21 | 29th Voivoda Cup | Legnica POL | 1 | Andrei Maksimenko | Marcin Sieciechowicz | 1-0 | 51 | Open |
| 1442 | 2013-09-15 | TCh-POL Ekstraliga 2013 | Katowice POL | 9.5 | Grzegorz Gajewski | Marcin Sieciechowicz | 1-0 | 53 | Open |
| 1443 | 2013-09-14 | TCh-POL Ekstraliga 2013 | Katowice POL | 8.2 | Marcin Sieciechowicz | Marcin Dziuba | 1/2-1/2 | 46 | Open |
| 1444 | 2013-09-14 | TCh-POL Ekstraliga 2013 | Katowice POL | 7.4 | Aleksander Mista | Marcin Sieciechowicz | 1/2-1/2 | 51 | Open |
| 1445 | 2013-09-01 | TCh-POL Ekstraliga 2013 | Gorzow Wielkopolski POL | 6.3 | Wojciech Moranda | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1446 | 2013-08-31 | TCh-POL Ekstraliga 2013 | Gorzow Wielkopolski POL | 5.3 | Marcin Sieciechowicz | Daniel Sadzikowski | 1-0 | 84 | Open |
| 1447 | 2013-08-30 | TCh-POL Ekstraliga 2013 | Gorzow Wielkopolski POL | 4.4 | Aleksander Hnydiuk | Marcin Sieciechowicz | 1/2-1/2 | 48 | Open |
| 1448 | 2013-08-29 | 18th Konik Morski | Rewal POL | 9.9 | Marcin Sieciechowicz | Filip Zombirt | 1-0 | 50 | Open |
| 1449 | 2013-08-28 | 18th Konik Morski | Rewal POL | 8.5 | Marcin Sieciechowicz | Arkadiusz Skawinski | 0-1 | 27 | Open |
| 1450 | 2013-08-27 | 18th Konik Morski | Rewal POL | 7.6 | Mateusz Brzezinski | Marcin Sieciechowicz | 0-1 | 72 | Open |
| 1451 | 2013-08-26 | 18th Konik Morski | Rewal POL | 6.3 | Marcin Sieciechowicz | Jan Musialkiewicz | 0-1 | 36 | Open |
| 1452 | 2013-08-24 | 18th Konik Morski | Rewal POL | 5.1 | 14100177 | Marcin Sieciechowicz | 1-0 | 42 | Open |
| 1453 | 2013-08-23 | 18th Konik Morski | Rewal POL | 4.3 | Pawel Weichhold | Marcin Sieciechowicz | 0-1 | 47 | Open |
| 1454 | 2013-08-22 | 18th Konik Morski | Rewal POL | 3.3 | Marcin Sieciechowicz | Nastassia Ziaziulkina | 1-0 | 92 | Open |
| 1455 | 2013-08-21 | 18th Konik Morski | Rewal POL | 2.3 | Wojciech Reza | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 1456 | 2013-08-20 | 18th Konik Morski | Rewal POL | 1.3 | Marcin Sieciechowicz | Komil Khamidov | 1-0 | 90 | Open |
| 1457 | 2013-08-17 | XXIV Jozefa Kochana Mem | Koszalin POL | 9.2 | Leon Volosin | Marcin Sieciechowicz | 1/2-1/2 | 5 | Open |
| 1458 | 2013-08-16 | XXIV Jozefa Kochana Mem | Koszalin POL | 8.3 | Marcin Sieciechowicz | Adam Czajkowski | 1-0 | 35 | Open |
| 1459 | 2013-08-15 | XXIV Jozefa Kochana Mem | Koszalin POL | 7.2 | Kacper Karwowski | Marcin Sieciechowicz | 1/2-1/2 | 56 | Open |
| 1460 | 2013-08-14 | XXIV Jozefa Kochana Mem | Koszalin POL | 6.1 | Marcin Sieciechowicz | 14100177 | 1/2-1/2 | 6 | Open |
| 1461 | 2013-08-13 | XXIV Jozefa Kochana Mem | Koszalin POL | 5.1 | Piotr Dobrowolski | Marcin Sieciechowicz | 1/2-1/2 | 7 | Open |
| 1462 | 2013-08-12 | XXIV Jozefa Kochana Mem | Koszalin POL | 4.1 | Marcin Sieciechowicz | Pawel Piotrowski | 1-0 | 39 | Open |
| 1463 | 2013-08-11 | XXIV Jozefa Kochana Mem | Koszalin POL | 3.1 | Henryk Lisinski | Marcin Sieciechowicz | 0-1 | 25 | Open |
| 1464 | 2013-08-11 | XXIV Jozefa Kochana Mem | Koszalin POL | 2.1 | Marcin Sieciechowicz | Sebastian Fronczak | 1-0 | 28 | Open |
| 1465 | 2013-08-10 | XXIV Jozefa Kochana Mem | Koszalin POL | 1.2 | Filip Smolenski | Marcin Sieciechowicz | 0-1 | 50 | Open |
| 1466 | 2013-07-30 | Karpacz Open 2013 | Karpacz POL | 9.3 | Bartosz Siembab | Marcin Sieciechowicz | 0-1 | 79 | Open |
| 1467 | 2013-07-28 | Karpacz Open 2013 | Karpacz POL | 7.3 | Marcin Sieciechowicz | Adrian Grzeskow | 1-0 | 30 | Open |
| 1468 | 2013-07-27 | Karpacz Open 2013 | Karpacz POL | 6.2 | 14100177 | Marcin Sieciechowicz | 1/2-1/2 | 61 | Open |
| 1469 | 2013-07-26 | Karpacz Open 2013 | Karpacz POL | 5.2 | Wieslaw Kmak | Marcin Sieciechowicz | 0-1 | 52 | Open |
| 1470 | 2013-07-25 | Karpacz Open 2013 | Karpacz POL | 4.1 | Marcin Sieciechowicz | Wojciech Moranda | 0-1 | 67 | Open |
| 1471 | 2013-07-23 | Karpacz Open 2013 | Karpacz POL | 2.3 | Marian Sadzikowski | Marcin Sieciechowicz | 0-1 | 76 | Open |
| 1472 | 2013-07-22 | Karpacz Open 2013 | Karpacz POL | 1.3 | Marcin Sieciechowicz | Jakub Marszalek | 1-0 | 35 | Open |
| 1473 | 2013-07-08 | 9th Baltic Pearl 2013 | Lazy POL | 9.3 | Marcin Sieciechowicz | Michal Bugalski | 1/2-1/2 | 50 | Open |
| 1474 | 2013-07-07 | 9th Baltic Pearl 2013 | Lazy POL | 8.3 | Klaudiusz Urban | Marcin Sieciechowicz | 1/2-1/2 | 8 | Open |
| 1475 | 2013-07-06 | 9th Baltic Pearl 2013 | Lazy POL | 7.1 | Marcin Sieciechowicz | Tomasz Warakomski | 1/2-1/2 | 14 | Open |
| 1476 | 2013-07-05 | 9th Baltic Pearl 2013 | Lazy POL | 6.3 | Marcin Sieciechowicz | Ryszard Eggink | 1-0 | 55 | Open |
| 1477 | 2013-07-04 | 9th Baltic Pearl 2013 | Lazy POL | 5.3 | Joanna Majdan | Marcin Sieciechowicz | 1/2-1/2 | 26 | Open |
| 1478 | 2013-07-03 | 9th Baltic Pearl 2013 | Lazy POL | 4.5 | Marcin Sieciechowicz | Wojciech Reza | 1-0 | 56 | Open |
| 1479 | 2013-07-02 | 9th Baltic Pearl 2013 | Lazy POL | 3.5 | Nikolai Aliavdin | Marcin Sieciechowicz | 1/2-1/2 | 40 | Open |
| 1480 | 2013-07-01 | 9th Baltic Pearl 2013 | Lazy POL | 2.8 | Marcin Sieciechowicz | Jakub Suliborski | 1-0 | 43 | Open |
| 1481 | 2013-06-30 | 9th Baltic Pearl 2013 | Lazy POL | 1.4 | Maciej Adamowicz | Marcin Sieciechowicz | 1/2-1/2 | 41 | Open |
| 1482 | 2013-05-26 | TCh-POL Ekstraliga 2013 | Wroclaw POL | 3 | Marcin Sieciechowicz | Miroslaw Grabarczyk | 1/2-1/2 | 35 | Open |
| 1483 | 2013-05-25 | TCh-POL Ekstraliga 2013 | Wroclaw POL | 2 | Mateusz Bartel | Marcin Sieciechowicz | 0-1 | 39 | Open |
| 1484 | 2013-05-24 | TCh-POL Ekstraliga 2013 | Wroclaw POL | 1 | Marcin Szelag | Marcin Sieciechowicz | 0-1 | 41 | Open |
| 1485 | 2013-03-03 | 3rd Ferdynand Dziedzica Mem | Trzcianka POL | 4.6 | Pawel Jaracz | Marcin Sieciechowicz | 1-0 | 27 | Open |
| 1486 | 2013-02-24 | VI Karkonosze Open A | Karpacz POL | 9.1 | Mateusz Dubinski | Marcin Sieciechowicz | 0-1 | 47 | Open |
| 1487 | 2013-02-22 | VI Karkonosze Open A | Karpacz POL | 7.4 | Vladimir Sergeev | Marcin Sieciechowicz | 1-0 | 37 | Open |
| 1488 | 2013-02-21 | VI Karkonosze Open A | Karpacz POL | 6.4 | Marcin Sieciechowicz | Filip Delekta | 1-0 | 28 | Open |
| 1489 | 2013-02-20 | VI Karkonosze Open A | Karpacz POL | 5.4 | Mateusz Kolosowski | Marcin Sieciechowicz | 1/2-1/2 | 42 | Open |
| 1490 | 2013-02-19 | VI Karkonosze Open A | Karpacz POL | 4.2 | Marcin Sieciechowicz | Jakub Szotkowski | 1/2-1/2 | 38 | Open |
| 1491 | 2013-02-18 | VI Karkonosze Open A | Karpacz POL | 3.2 | Radoslaw Sliwerski | Marcin Sieciechowicz | 1/2-1/2 | 28 | Open |
| 1492 | 2013-02-17 | VI Karkonosze Open A | Karpacz POL | 2.3 | Marcin Sieciechowicz | Aleksandra Dadello | 1-0 | 48 | Open |
| 1493 | 2013-02-16 | VI Karkonosze Open A | Karpacz POL | 1.3 | Lukasz Zaleski | Marcin Sieciechowicz | 0-1 | 36 | Open |
| 1494 | 2013-01-04 | XXIII Krakow Open | Krakow POL | 9.6 | Marcin Sieciechowicz | Karel Malinovsky | 1-0 | 74 | Open |
| 1495 | 2013-01-03 | XXIII Krakow Open | Krakow POL | 8.4 | 14100177 | Marcin Sieciechowicz | 1/2-1/2 | 9 | Open |
| 1496 | 2013-01-02 | XXIII Krakow Open | Krakow POL | 7.2 | Marcin Sieciechowicz | Wojciech Moranda | 1/2-1/2 | 13 | Open |
| 1497 | 2012-12-31 | XXIII Krakow Open | Krakow POL | 6.6 | Vadim Shishkin | Marcin Sieciechowicz | 0-1 | 38 | Open |
| 1498 | 2012-12-30 | XXIII Krakow Open | Krakow POL | 5.11 | Marcin Sieciechowicz | Henri Pohjala | 1-0 | 50 | Open |
| 1499 | 2012-12-29 | XXIII Krakow Open | Krakow POL | 4.4 | Kirill Stupak | Marcin Sieciechowicz | 1-0 | 59 | Open |
| 1500 | 2012-12-29 | XXIII Krakow Open | Krakow POL | 3.4 | Marcin Sieciechowicz | Artur Jakubiec | 1/2-1/2 | 48 | Open |
| 1501 | 2012-12-28 | XXIII Krakow Open | Krakow POL | 2.12 | Magdalena Mucha | Marcin Sieciechowicz | 0-1 | 83 | Open |
| 1502 | 2012-12-27 | XXIII Krakow Open | Krakow POL | 1.17 | Marcin Sieciechowicz | Damian Balinski | 1-0 | 55 | Open |
| 1503 | 2012-12-16 | Amplico ch-EUR Rapid | Warsaw POL | 11.44 | Marcin Sieciechowicz | Piotr Piesik | 1-0 | 56 | Open |
| 1504 | 2012-12-15 | Amplico ch-EUR Rapid | Warsaw POL | 5.21 | Marcin Sieciechowicz | Grzegorz Gajewski | 0-1 | 29 | Open |
| 1505 | 2012-12-15 | Amplico ch-EUR Rapid | Warsaw POL | 4.1 | Andrei Istratescu | Marcin Sieciechowicz | 1/2-1/2 | 50 | Open |
| 1506 | 2012-11-28 | XXVIII Voivoda Cup | Legnica POL | 9.3 | Marcin Sieciechowicz | Aleksander Mista | 1/2-1/2 | 38 | Open |
| 1507 | 2012-11-27 | XXVIII Voivoda Cup | Legnica POL | 8.3 | Jolanta Zawadzka | Marcin Sieciechowicz | 1/2-1/2 | 21 | Open |
| 1508 | 2012-11-26 | XXVIII Voivoda Cup | Legnica POL | 7.4 | Marcin Sieciechowicz | Artur Pieniazek | 1/2-1/2 | 30 | Open |
| 1509 | 2012-11-26 | XXVIII Voivoda Cup | Legnica POL | 6.2 | Jaroslav Bures | Marcin Sieciechowicz | 1-0 | 39 | Open |
| 1510 | 2012-11-25 | XXVIII Voivoda Cup | Legnica POL | 5.5 | Marcin Sieciechowicz | Pavel Simacek | 1-0 | 52 | Open |
| 1511 | 2012-11-24 | XXVIII Voivoda Cup | Legnica POL | 4.1 | Kamil Dragun | Marcin Sieciechowicz | 1-0 | 56 | Open |
| 1512 | 2012-11-23 | XXVIII Voivoda Cup | Legnica POL | 3.5 | Oleksandr Sulypa | Marcin Sieciechowicz | 1/2-1/2 | 32 | Open |
| 1513 | 2012-11-23 | XXVIII Voivoda Cup | Legnica POL | 2.2 | Marcin Sieciechowicz | Oleg M Romanishin | 1/2-1/2 | 36 | Open |
| 1514 | 2012-11-22 | XXVIII Voivoda Cup | Legnica POL | 1.4 | Daniel Fraczek | Marcin Sieciechowicz | 1/2-1/2 | 27 | Open |
| 1515 | 2012-06-30 | XXI Adolf Anderssen Mem Prelim | Wroclaw POL | 9 | Marcin Sieciechowicz | Vidmantas Malisauskas | 0-1 | 47 | Open |
| 1516 | 2012-06-30 | XXI Adolf Anderssen Mem Prelim | Wroclaw POL | 8 | Petro Golubka | Marcin Sieciechowicz | 0-1 | 50 | Open |
| 1517 | 2012-06-30 | XXI Adolf Anderssen Mem Prelim | Wroclaw POL | 7 | Marcin Sieciechowicz | Bartosz Siembab | 1-0 | 21 | Open |
| 1518 | 2012-06-30 | XXI Adolf Anderssen Mem Prelim | Wroclaw POL | 5 | Marcin Sieciechowicz | Piotr Goluch | 0-1 | 41 | Open |
| 1519 | 2012-06-30 | XXI Adolf Anderssen Mem Prelim | Wroclaw POL | 2 | Piotr Sabuk | Marcin Sieciechowicz | 1-0 | 28 | Open |
| 1520 | 2012-06-30 | XXI Adolf Anderssen Mem Prelim | Wroclaw POL | 1 | Marcin Sieciechowicz | Andrzej Rakowiecki | 1-0 | 33 | Open |
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