Willem Jacobusse
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Bled ol (Men) | 10/26/2002 | 1978 | Slovenia |
| Vlissingen HZ op 5th | 07/28/2001 | 808 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| A47 | Queen's Indian defence | 3 games |
| D03 | Torre attack (Tartakower variation) | 2 games |
| D02 | Queen's pawn game | 1 games |
| A48 | King's Indian, East Indian defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 2 games |
| B17 | Caro-Kann, Steinitz variation | 2 games |
| E70 | King's Indian, 4.e4 | 1 games |
| A47 | Queen's Indian defence | 1 games |


Slovenia
Netherlands