J. Cerna
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Ceske Budejovice op | ??/??/1996 | 1484 | Czech Republic |
| Prague Mladi op | ??/??/1995 | 1074 | Czech Republic |
| CZE-ch (Women) | ??/??/1993 | 386 | Czech Republic |
| CZE-ch (Women) | ??/??/1992 | 461 |
Most Played Openings as White
| ECO | Opening | Games |
| D03 | Torre attack (Tartakower variation) | 6 games |
| A45 | Queen's pawn game | 3 games |
| D02 | Queen's pawn game | 2 games |
| D00 | Queen's pawn game | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B21 | Sicilian, Grand Prix attack | 2 games |
| B43 | Sicilian, Kan, 5.Nc3 | 2 games |
| C00 | French defence | 1 games |
| B41 | Sicilian, Kan variation | 1 games |


Czech Republic