Ed Koster
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| North Bay op | 08/??/1996 | 1256 | United States |
| Lansing-ch MI M/X | ??/??/1995 | 391 | United States |
| Flint-ch MI M/X | ??/??/1993 | 242 | United States |
| USA-op | ??/??/1992 | 435 | United States |
Most Played Openings as White
| ECO | Opening | Games |
| C19 | French, Winawer, advance, 6...Ne7 | 4 games |
| E62 | King's Indian, fianchetto variation | 2 games |
| B01 | Scandinavian (centre counter) defence | 2 games |
| C18 | French, Winawer, advance variation | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C56 | Two knights defence | 3 games |
| D90 | Gruenfeld, Three knights variation | 2 games |
| A07 | Reti, King's Indian attack (Barcza system) | 1 games |
| C44 | King's pawn game | 1 games |


United States