Pekka Mattila
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Helsinki We X op | ??/??/1998 | 974 | Finland |
| Turku We TuTS op | ??/??/1998 | 1296 | Finland |
| Pori We PSY op | ??/??/1998 | 1031 | Finland |
| Turku We TuTS op | ??/??/1997 | 602 | Finland |
Most Played Openings as White
| ECO | Opening | Games |
| E32 | Nimzo-Indian, classical variation | 1 games |
| D06 | Queen's Gambit | 1 games |
| D87 | Gruenfeld, exchange, Spassky variation | 1 games |
| A90 | Dutch defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D58 | Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) system | 1 games |
| B50 | Sicilian | 1 games |
| B25 | Sicilian, closed | 1 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 1 games |


Finland