Willem Mook
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Haarlem Nova College op | 07/07/2006 | 1969 |  Netherlands |
| Haarlem AKN op 10th | 07/06/2001 | 621 | Netherlands |
| Haarlem AKN op | ??/??/1992 | 653 | Netherlands |
Willem Mook Repertoire with White pieces (most played)
| ECO | Opening | Games |
| B06 | Robatsch (modern) defence | 1 games |
| C26 | Vienna, Falkbeer variation | 1 games |
| A00 | Polish (Sokolsky) opening | 1 games |
| B11 | Caro-Kann, two knights, 3...Bg4 | 1 games |
Willem Mook Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| C41 | Philidor's defence | 1 games |
| A40 | Queen's pawn | 1 games |
| B13 | Caro-Kann, exchange variation | 1 games |
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