Mariusz Peczak
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Lodz-ch | ??/??/1996 | 1320 |  Poland |
Most Played Openings as White
| ECO | Opening | Games |
| D36 | Queen's Gambit Declined, exchange, positional line, 6.Qc2 | 1 games |
| D20 | Queen's gambit accepted | 1 games |
| E11 | Bogo-Indian defence | 1 games |
| D85 | Gruenfeld, exchange variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B11 | Caro-Kann, two knights, 3...Bg4 | 2 games |
| E68 | King's Indian, fianchetto, classical variation, 8.e4 | 1 games |
| A45 | Queen's pawn game | 1 games |
| A48 | King's Indian, East Indian defence | 1 games |
