Jan Visser
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Essent Amateur | 10/12/2001 | 1773 | Netherlands |
| Batatais ol U14 | 09/19/2001 | 590 | Brazil |
| Zilveren Toren op | ??/??/2000 | 507 | Belgium |
| NED-ch | ??/??/1957 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C40 | King's knight opening | 1 games |
| E63 | King's Indian, fianchetto, Panno variation | 1 games |
| C84 | Ruy Lopez, closed defence | 1 games |
| E48 | Nimzo-Indian, 4.e3 O-O, 5.Bd3 d5 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C41 | Philidor's defence | 2 games |
| C05 | French, Tarrasch, closed variation | 1 games |
| A13 | English opening | 1 games |
| C06 | French, Tarrasch, closed variation, main line | 1 games |


Netherlands
Brazil
Belgium