Marcin Sieciechowicz
Country
POL
Birth Year
1992
Gender
M
Title
International Master
FIDE ID
1130170
FIDE rating history
View rating lists
Available Games
Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-10-09 (UTC).
Online games are identified from known tournament names, playing sites and PGN mode. Other games are listed as OTB (over-the-board).
| # | Date | Event | Site | Round | White | Black | Result | Moves | View |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 10 | Szpar,Milosz | Sieciechowicz,M | 1-0 | 35 | Open |
| 2 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 8 | Sieciechowicz,M | Sukandar,I | 1-0 | 35 | Open |
| 3 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 11 | Rosen,E | Sieciechowicz,M | 1-0 | 19 | Open |
| 4 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 4 | Sieciechowicz,M | Marsden,Samuel | 1-0 | 36 | Open |
| 5 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 6 | Rabin,E | Sieciechowicz,M | 0-1 | 29 | Open |
| 6 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 9 | Sieciechowicz,M | Taran,Sebastian | 1-0 | 22 | Open |
| 7 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 7 | Tahmasebi,Hamidreza | Sieciechowicz,M | 1-0 | 36 | Open |
| 8 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 3 | Manukyan,Artyom | Sieciechowicz,M | 1/2-1/2 | 47 | Open |
| 9 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 2 | Sieciechowicz,M | Schilstra,Laurens | 1-0 | 49 | Open |
| 10 | 2026-09-17 | 2nd 3-0 Thu 17th Sep 2026 | chess.com INT | 5 | Sieciechowicz,M | Rogov,Matfey | 0-1 | 27 | Open |
| 11 | 2026-08-25 | Titled Tue 25th Aug 2026 | chess.com INT | 3 | Sieciechowicz,M | Devaev,A | 0-1 | 21 | Open |
| 12 | 2026-08-25 | Titled Tue 25th Aug 2026 | chess.com INT | 1 | Sieciechowicz,M | Abuzyarov,Arlan | 0-1 | 96 | Open |
| 13 | 2026-08-25 | Titled Tue 25th Aug 2026 | chess.com INT | 2 | EYETONGHAN,Denyefa Callistus | Sieciechowicz,M | 0-1 | 21 | Open |
| 14 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 3 | Tregubov,P | Sieciechowicz,M | 1-0 | 20 | Open |
| 15 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 4 | Sieciechowicz,M | Rusu,Lucas | 1-0 | 28 | Open |
| 16 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 11 | Sieciechowicz,M | Kengurov,Yaroslav | 0-1 | 76 | Open |
| 17 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 9 | Sieciechowicz,M | Le Tuan Minh | 0-1 | 43 | Open |
| 18 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 2 | Sieciechowicz,M | Movahed,Sina | 0-1 | 46 | Open |
| 19 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 10 | Koneru,H | Sieciechowicz,M | 0-1 | 77 | Open |
| 20 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 8 | Ivanytska,Liudmyla | Sieciechowicz,M | 0-1 | 33 | Open |
| 21 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 5 | Mayta Aiza,Maveric | Sieciechowicz,M | 1-0 | 74 | Open |
| 22 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 7 | Samdanov,S | Sieciechowicz,M | 0-1 | 63 | Open |
| 23 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 6 | Sieciechowicz,M | Alonso,Leonardo Espinha | 1-0 | 52 | Open |
| 24 | 2026-05-12 | Titled Tue 12th May 2026 | chess.com INT | 1 | Sieciechowicz,M | Tugaj,S | 1-0 | 33 | Open |
| 25 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 11 | Sieciechowicz,M | Kollars,Dmitrij | 0-1 | 26 | Open |
| 26 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 2 | Yoganathan,Sakithyan | Sieciechowicz,M | 0-1 | 46 | Open |
| 27 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 4 | Sieciechowicz,M | Mattenberger,Matthias | 1/2-1/2 | 70 | Open |
| 28 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 9 | Sieciechowicz,M | Jyotshnav Talukdar | 1-0 | 32 | Open |
| 29 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 7 | Kalyani Sirin | Sieciechowicz,M | 1-0 | 25 | Open |
| 30 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 10 | Williams,Si1 | Sieciechowicz,M | 0-1 | 42 | Open |
| 31 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 8 | Olhovik,Andrei | Sieciechowicz,M | 0-1 | 74 | Open |
| 32 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 6 | Sieciechowicz,M | Terry,R | 0-1 | 29 | Open |
| 33 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 5 | Lana Rodriguez,D | Sieciechowicz,M | 0-1 | 53 | Open |
| 34 | 2026-04-28 | Titled Tue 28th Apr 2026 | chess.com INT | 3 | Sieciechowicz,M | Fisher,Timofey | 1-0 | 58 | Open |
| 35 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 9 | Abhimanyu Mishra | Marcin Sieciechowicz | 1-0 | 37 | Open |
| 36 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 9 | Marcin Sieciechowicz | Srihari L R | 1-0 | 35 | Open |
| 37 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 8 | Saidakbar Saydaliev | Marcin Sieciechowicz | 0-1 | 48 | Open |
| 38 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 8 | Marcin Sieciechowicz | Nikita Matinian | 1-0 | 35 | Open |
| 39 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 7 | Anatoly Krutko | Marcin Sieciechowicz | 0-1 | 53 | Open |
| 40 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 7 | Stanislav Bukreev | Marcin Sieciechowicz | 0-1 | 61 | Open |
| 41 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 6 | Marcin Sieciechowicz | David 1981 Martinez Martin | 1-0 | 39 | Open |
| 42 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 6 | Andrzej Krzywda | Marcin Sieciechowicz | 0-1 | 25 | Open |
| 43 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 5 | Adrian Jafeth Miranda Samudio | Marcin Sieciechowicz | 0-1 | 30 | Open |
| 44 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 5 | Marcin Sieciechowicz | Alexander Moskalenko | 0-1 | 41 | Open |
| 45 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 4 | Marcin Sieciechowicz | Stanislav Kovalevsky | 1/2-1/2 | 54 | Open |
| 46 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 4 | Marcin Sieciechowicz | Horacio Pereyra | 1-0 | 50 | Open |
| 47 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 3 | Evan Rabin | Marcin Sieciechowicz | 0-1 | 33 | Open |
| 48 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 3 | Amir Hadzovic | Marcin Sieciechowicz | 0-1 | 32 | Open |
| 49 | 2025-06-10 | Titled Tue 10th Jun Early | chess.com INT | 2 | Marcin Sieciechowicz | Dorsa Sadat Khalafvand | 0-1 | 52 | Open |
| 50 | 2025-06-10 | Titled Tue 10th Jun Late | chess.com INT | 2 | Marcin Sieciechowicz | Quang Thai Ngo | 1-0 | 30 | Open |
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