Boris Siff
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| New York op | 03/??/1985 | 1751 |  United States |
| US op | ??/??/1981 | 2151 | United States |
| Paul Masson op | ??/??/1977 | 2318 | United States |
Most Played Openings as White
| ECO | Opening | Games |
| C02 | French, advance variation | 1 games |
| E26 | Nimzo-Indian, Saemisch variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D43 | Queen's Gambit Declined semi-Slav | 1 games |
| C44 | King's pawn game | 1 games |
| C71 | Ruy Lopez, modern Steinitz defence | 1 games |
