Male
FIDE ID:
Gustav Brejnik
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| 36th Czech Open A 2025 | 07/25/2025 | 2306 |  Czech Republic |
| TCh-CZE 1 Liga Zapad | 10/20/2024 | 2261 | Czech Republic |
| TCh-CZE 1 Liga Zapad | 10/29/2023 | 2229 | Czech Republic |
| ECo-C Extraliga 2022-23 | 10/15/2022 | 2439 | Czech Republic |
Gustav Brejnik Opening Repertoire with White pieces
| ECO | Opening | Games |
| D10 | Queen's Gambit Declined Slav defence | 3 games |
| E04 | Catalan, open, 5.Nf3 | 3 games |
| A62 | Benoni, fianchetto variation | 2 games |
| D12 | Queen's Gambit Declined Slav, 4.e3 Bf5 | 2 games |
Gustav Brejnik Opening Repertoire with Black pieces
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 5 games |
| B10 | Caro-Kann defence | 4 games |
| D02 | Queen's pawn game | 3 games |
| B11 | Caro-Kann, two knights, 3...Bg4 | 3 games |
