| Round 4 |
| za 03-06-2006 |  DVSB | - |  RDC Rijnsburg | | 2 | - | 6 | | | |
| Cock van Leeuwen (1356) | - | Bas Messemaker (1445) | | 1 | - | 1 | | |
| Laurens Fijn van Draat (1412) | - | Richard Kromhout (1325) | | 1 | - | 1 | | |
| Kees Binnenkade (1194) | - | Michiel Kloosterziel (1383) | | 0 | - | 2 | | |
| Harry Clasquin (1275) | - | Cor van Dusseldorp (1371) | | 0 | - | 2 | | |
|  Hiltex | - |  Van Stigt Thans | | 3 | - | 5 | | | |
| Kees Thijssen (1513) | - | Rob Clerc (1514) | | 1 | - | 1 | | | Game |
| Jasper Lemmen (1430) | - | Anton van Berkel (1409) | | 0 | - | 2 | | |
| Henk Klarenbeek (1372) | - | Frits Luteijn (1383) | | 1 | - | 1 | | |
| Johan Bastiaannet (1418) | - | Arie van de Weteringh Azn. (1384) | | 1 | - | 1 | | |
