Sergej Nikolaev
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| White Nights op | ??/??/1997 | 1805 | Russian Federation |
| Graz op | 09/??/1994 | 2042 | Austria |
| St Petersburg op | ??/??/1992 | 1025 | Russian Federation |
| Moscow Tal mem | 08/??/1992 | 2239 | Russian Federation |
Most Played Openings as White
| ECO | Opening | Games |
| E15 | Queen's Indian, 4.g3 | 7 games |
| E11 | Bogo-Indian defence | 3 games |
| A70 | Benoni, classical with e4 and Nf3 | 2 games |
| E14 | Queen's Indian, 4.e3 | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A57 | Benko gambit | 6 games |
| E05 | Catalan, open, classical line | 3 games |
| B42 | Sicilian, Kan, 5.Bd3 | 3 games |
| A46 | Queen's pawn game | 2 games |


Russian Federation
Austria