Male
FIDE ID:
Marek Kosiorek
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| 33rd Cracovia Open A | 12/27/2022 | 2242 |  Poland |
| 33rd Czech Open A 2022 | 07/22/2022 | 2257 |  Czech Republic |
| 30th Czech Open A 2019 | 07/19/2019 | 2285 | Czech Republic |
| 21st Czech GM Open | 07/23/2010 | 2340 | Czech Republic |
Most Played Openings as White
| ECO | Opening | Games |
| E97 | King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) | 4 games |
| B01 | Scandinavian (centre counter) defence | 3 games |
| A46 | Queen's pawn game | 3 games |
| E70 | King's Indian, 4.e4 | 3 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B22 | Sicilian, Alapin's variation (2.c3) | 4 games |
| D85 | Gruenfeld, exchange variation | 3 games |
| B85 | Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6 | 3 games |
| C42 | Petrov's defence | 3 games |
