Jonathan Roolf
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| GER-chT north U13 | 09/??/1997 | 48 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| C50 | King's pawn game | 1 games |
| B74 | Sicilian, dragon, classical, 9.Nb3 | 1 games |
| B13 | Caro-Kann, exchange variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C50 | King's pawn game | 2 games |
| B02 | Alekhine's defence | 1 games |
| C45 | Scotch game | 1 games |


Germany