F. Jonkman
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Computerij op | 03/??/1998 | 1470 |  Netherlands |
| Computerij op | ??/??/1997 | 1289 | Netherlands |
| Soest op | ??/??/1996 | 518 | Netherlands |
| Dieren | ??/??/1988 | 119 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| A28 | English, four knights system | 2 games |
| E73 | King's Indian, 5.Be2 | 2 games |
| A14 | English, Neo-Catalan declined | 1 games |
| A42 | Modern defence, Averbakh system | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B70 | Sicilian, dragon variation | 1 games |
| A46 | Queen's pawn game | 1 games |
| A30 | English, symmetrical variation | 1 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 1 games |
