Heikki Koskinen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| FIN-chT | ??/??/1990 | 324 | Finland |
| FIN-chT | ??/??/1989 | 537 | Finland |
| FIN-ch | ??/??/1980 | 1247 | Finland |
| Siegen ol (Men) fin-B | 09/05/1970 | 0 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C04 | French, Tarrasch, Guimard main line | 3 games |
| B52 | Sicilian, Canal-Sokolsky attack, 3...Bd7 | 3 games |
| C91 | Ruy Lopez, closed, 9.d4 | 2 games |
| B51 | Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B16 | Caro-Kann, Bronstein-Larsen variation | 6 games |
| B12 | Caro-Kann defence | 4 games |
| B13 | Caro-Kann, exchange variation | 3 games |
| E14 | Queen's Indian, 4.e3 | 2 games |


Finland
Germany