J. Koncel
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| CZE-ch U10 | ??/??/1994 | 0 | Czech Republic |
| CZE Czechia-ch U10 | ??/??/1993 | 0 | Czech Republic |
| CZE-ch U10 | ??/??/1993 | 0 | Czech Republic |
Most Played Openings as White
| ECO | Opening | Games |
| C50 | King's pawn game | 3 games |
| C48 | Four knights, Spanish variation | 2 games |
| B33 | Sicilian defence | 2 games |
| B42 | Sicilian, Kan, 5.Bd3 | 2 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C50 | King's pawn game | 6 games |
| C54 | Giuoco Piano | 2 games |
| C41 | Philidor's defence | 1 games |
| B33 | Sicilian defence | 1 games |


Czech Republic