Josef Koska
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Brno Gargulak mem | ??/??/1973 | 0 | |
| Bystrice nP Region-chB | 07/??/1973 | 0 | |
| Brno | ??/??/1937 | 0 | |
| Kautsky mem 12th | ??/??/1935 | 0 | Czech Republic |
Most Played Openings as White
| ECO | Opening | Games |
| E79 | King's Indian, Four pawns attack, main line | 1 games |
| B13 | Caro-Kann, exchange variation | 1 games |
| B85 | Sicilian, Scheveningen, classical variation with ...Qc7 and ...Nc6 | 1 games |
| B84 | Sicilian, Scheveningen (Paulsen), classical variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C66 | Ruy Lopez, Berlin defence, 4.O-O, d6 | 1 games |
| C97 | Ruy Lopez, closed, Chigorin defence | 1 games |
| C10 | French, Paulsen variation | 1 games |
| D48 | Queen's Gambit Declined semi-Slav, Meran, 8...a6 | 1 games |


Czech Republic