Poland
Male
FIDE ID:
Mariusz Pecak
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| POL-chT 2nd div North | ??/??/1999 | 1658 |  Poland |
| Lodz-ch | ??/??/1997 | 1469 | Poland |
Mariusz Pecak Repertoire with White pieces (most played)
| ECO | Opening | Games |
| D31 | Queen's Gambit Declined, 3.Nc3 | 2 games |
| D85 | Gruenfeld, exchange variation | 1 games |
| E81 | King's Indian, Saemisch, 5...O-O | 1 games |
| E12 | Queen's Indian defence | 1 games |
Mariusz Pecak Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| A05 | Reti opening | 1 games |
| D42 | Queen's Gambit Declined, Semi-Tarrasch, 7.Bd3 | 1 games |
| D03 | Torre attack (Tartakower variation) | 1 games |
| B13 | Caro-Kann, exchange variation | 1 games |
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