Ruben Gideon Koellner
Country
GER
Birth Year
2004
Gender
M
Title
International Master
FIDE ID
12993093
FIDE rating history
View rating lists
Available Games
Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-10-13 (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 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 4 | Koellner,Ruben Gideon | Hnatyshyn,Anastasiia | 1-0 | 50 | Open |
| 2 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 2 | Sargissyan,S | Koellner,Ruben Gideon | 0-1 | 45 | Open |
| 3 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 7 | Koellner,Ruben Gideon | Shearsby,Jude | 1-0 | 36 | Open |
| 4 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 6 | Materia,Marco | Koellner,Ruben Gideon | 1-0 | 36 | Open |
| 5 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 10 | Koellner,Ruben Gideon | Nguyen Truong An Khang | 1/2-1/2 | 57 | Open |
| 6 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 3 | Nesterov,Arseniy | Koellner,Ruben Gideon | 1-0 | 56 | Open |
| 7 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 11 | Zharas,Aldiyar | Koellner,Ruben Gideon | 0-1 | 105 | Open |
| 8 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 1 | Koellner,Ruben Gideon | Muzis,Renars | 1/2-1/2 | 46 | Open |
| 9 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 9 | Bok,B | Koellner,Ruben Gideon | 1-0 | 55 | Open |
| 10 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 5 | Kiringoda,Thehas Rithmitha | Koellner,Ruben Gideon | 0-1 | 129 | Open |
| 11 | 2026-09-01 | Titled Tue 1st Sep 2026 | chess.com INT | 8 | Koellner,Ruben Gideon | Drygalov,Andrey | 1-0 | 55 | Open |
| 12 | 2026-06-02 | Titled Tue 2nd Jun 2026 | chess.com INT | 3 | Budrewicz,K | Koellner,Ruben Gideon | 1-0 | 92 | Open |
| 13 | 2026-06-02 | Titled Tue 2nd Jun 2026 | chess.com INT | 1 | Harriott,Tyrell | Koellner,Ruben Gideon | 0-1 | 68 | Open |
| 14 | 2026-06-02 | Titled Tue 2nd Jun 2026 | chess.com INT | 2 | Koellner,Ruben Gideon | Terry,R | 0-1 | 46 | Open |
| 15 | 2025-08-18 | Abu Dhabi Masters Online | chess.com INT | 4 | Sharath Radhakrishnan | Ruben Gideon Koellner | 1-0 | 47 | Open |
| 16 | 2025-08-18 | Abu Dhabi Masters Online | chess.com INT | 3 | Ruben Gideon Koellner | Mikkel Vinh Loftgaard | 1/2-1/2 | 71 | Open |
| 17 | 2025-08-18 | Abu Dhabi Masters Online | chess.com INT | 2 | Artemii Khanbutaev | Ruben Gideon Koellner | 0-1 | 35 | Open |
| 18 | 2025-08-12 | Titled Tue 12th Aug Late | chess.com INT | 3 | Ruben Gideon Koellner | Luca Silva | 0-1 | 42 | Open |
| 19 | 2025-08-12 | Titled Tue 12th Aug Late | chess.com INT | 2 | Alexei Belov | Ruben Gideon Koellner | 1/2-1/2 | 49 | Open |
| 20 | 2025-08-12 | Titled Tue 12th Aug Late | chess.com INT | 1 | Ruben Gideon Koellner | Tomasz Mika | 1-0 | 22 | Open |
| 21 | 2025-06-24 | Titled Tue 24th Jun Late | chess.com INT | 3 | William Graif | Ruben Gideon Koellner | 1-0 | 19 | Open |
| 22 | 2025-06-24 | Titled Tue 24th Jun Late | chess.com INT | 2 | Ruben Gideon Koellner | Alexei Gubajdullin | 1-0 | 57 | Open |
| 23 | 2025-06-24 | Titled Tue 24th Jun Late | chess.com INT | 1 | Gedeon Hartge | Ruben Gideon Koellner | 0-1 | 63 | Open |
| 24 | 2025-06-17 | Titled Tue 17th Jun Late | chess.com INT | 4 | Ruben Gideon Koellner | Martin Oksendal | 0-1 | 50 | Open |
| 25 | 2025-06-17 | Titled Tue 17th Jun Late | chess.com INT | 3 | V Pranav | Ruben Gideon Koellner | 1-0 | 42 | Open |
| 26 | 2025-06-17 | Titled Tue 17th Jun Late | chess.com INT | 2 | Anjaneya Sripathy Rao | Ruben Gideon Koellner | 0-1 | 50 | Open |
| 27 | 2025-06-17 | Titled Tue 17th Jun Late | chess.com INT | 1 | Ruben Gideon Koellner | Elameir Fathy | 1-0 | 29 | Open |
| 28 | 2025-05-27 | Titled Tue 27th May Late | chess.com INT | 1 | Ruben Gideon Koellner | Nayak Rajesh | 1-0 | 28 | Open |
| 29 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 9 | David W L Howell | Ruben Gideon Koellner | 1-0 | 36 | Open |
| 30 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 8 | Ruben Gideon Koellner | Tudor-Gabriel Danila | 1-0 | 44 | Open |
| 31 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 7 | Artem Gogolev | Ruben Gideon Koellner | 0-1 | 36 | Open |
| 32 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 6 | Ilhan Serhat Salman | Ruben Gideon Koellner | 1/2-1/2 | 77 | Open |
| 33 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 5 | Ruben Gideon Koellner | Ivan Yeletsky | 0-1 | 37 | Open |
| 34 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 4 | Timur Kocharin | Ruben Gideon Koellner | 0-1 | 25 | Open |
| 35 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 3 | Ruben Gideon Koellner | Jules Moussard | 0-1 | 68 | Open |
| 36 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 2 | Ruben Gideon Koellner | Eduardo Cesar Da Matta | 1-0 | 51 | Open |
| 37 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 1 | Hui Li | Ruben Gideon Koellner | 0-1 | 44 | Open |
| 38 | 2025-04-29 | Titled Tue 29th Apr Late | chess.com INT | 10 | Ruben Gideon Koellner | Mert Ceyhan | 0-1 | 56 | Open |
| 39 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 9 | Alexey Sarana | Ruben Gideon Koellner | 1-0 | 44 | Open |
| 40 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 8 | Ruben Gideon Koellner | Stanley Badacsonyi | 1-0 | 39 | Open |
| 41 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 7 | Artin Ashraf | Ruben Gideon Koellner | 1-0 | 29 | Open |
| 42 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 6 | Richard Alejandro Rueda Rojas | Ruben Gideon Koellner | 0-1 | 56 | Open |
| 43 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 5 | Ruben Gideon Koellner | Amir Hadzovic | 1-0 | 78 | Open |
| 44 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 4 | Ruben Gideon Koellner | Andy Woodward | 0-1 | 50 | Open |
| 45 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 3 | Oleksii Karvatskyi | Ruben Gideon Koellner | 0-1 | 51 | Open |
| 46 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 2 | Ruben Gideon Koellner | Enrique Fernando Asensio Ramos | 1-0 | 48 | Open |
| 47 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 1 | Michal Redzisz | Ruben Gideon Koellner | 0-1 | 36 | Open |
| 48 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 11 | Ruben Gideon Koellner | Erigaisi Arjun | 0-1 | 49 | Open |
| 49 | 2025-03-18 | Titled Tue 18th Mar Late | chess.com INT | 10 | Ruben Gideon Koellner | Kevin George | 1-0 | 100 | Open |
| 50 | 2025-02-25 | Titled Tue 25th Feb Early | chess.com INT | 9 | Krzysztof Budrewicz | Ruben Gideon Koellner | 0-1 | 45 | Open |
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