Jan Ontkovic
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| SVK-ch U16 | ??/??/1997 | 335 | Slovakia |
| SVK-ch | ??/??/1997 | 1490 | Slovakia |
Most Played Openings as White
| ECO | Opening | Games |
| B89 | Sicilian, Sozin, 7.Be3 | 1 games |
| C42 | Petrov's defence | 1 games |
| B13 | Caro-Kann, exchange variation | 1 games |
| C92 | Ruy Lopez, closed, 9.h3 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B79 | Sicilian, dragon, Yugoslav attack, 12.h4 | 1 games |
| C97 | Ruy Lopez, closed, Chigorin defence | 1 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 1 games |
| E70 | King's Indian, 4.e4 | 1 games |


Slovakia