Fons Jonkers
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Haarlem AKN op 8th | 07/02/1999 | 769 | Netherlands |
| Haarlem AKN | ??/??/1994 | 626 | Netherlands |
| Haarlem AKN op | ??/??/1993 | 638 | Netherlands |
| Haarlem AKN op | ??/??/1992 | 653 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| E99 | King's Indian, orthodox, Aronin-Taimanov, main line | 1 games |
| D88 | Gruenfeld, Spassky variation, main line, 10...cd, 11.cd | 1 games |
| E73 | King's Indian, 5.Be2 | 1 games |
| A80 | Dutch | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B95 | Sicilian, Najdorf, 6...e6 | 3 games |
| D02 | Queen's pawn game | 1 games |
| B87 | Sicilian, Sozin with ...a6 and ...b5 | 1 games |
| B30 | Sicilian defence | 1 games |


Netherlands