Hans Guenther Kosak
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Landesliga2 West 9900 | ??/??/1999 | 96 | Germany |
| Salzwedel op | ??/??/2000 | 315 | Germany |
| LEM-chB | ??/??/1995 | 49 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| B30 | Sicilian defence | 2 games |
| B25 | Sicilian, closed | 2 games |
| E97 | King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) | 1 games |
| D60 | Queen's Gambit Declined, Orthodox defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C56 | Two knights defence | 2 games |
| B20 | Sicilian defence | 1 games |
| A00 | Polish (Sokolsky) opening | 1 games |
| E77 | King's Indian, Four pawns attack, 6.Be2 | 1 games |


Germany