| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. P du Chattel vs E Knoppert |
| 0-1 | 24 | 1987 | Dutch Open | A07 King's Indian Attack |
| 27. G Welling vs P du Chattel |
 | 1-0 | 42 | 1988 | Utrecht Open | A01 Nimzovich-Larsen Attack |
| 28. I Rogers vs P du Chattel |
| 1-0 | 62 | 1988 | Utrecht Open | B10 Caro-Kann |
| 29. P du Chattel vs G de Boer |
| ½-½ | 53 | 1989 | Dutch Open | E00 Queen's Pawn Game |
| 30. L Pliester vs P du Chattel |
| ½-½ | 55 | 1989 | Dutch Open | A04 Reti Opening |
| 31. R Hartoch vs P du Chattel |
| 1-0 | 37 | 1989 | Dutch Open | A04 Reti Opening |
| 32. P du Chattel vs H Klip |
| ½-½ | 36 | 1989 | Dutch Open | C61 Ruy Lopez, Bird's Defense |
| 33. M Bosman vs P du Chattel |
| 1-0 | 34 | 1989 | Dutch Open | A04 Reti Opening |
| 34. P du Chattel vs O Wilgenhof |
| ½-½ | 53 | 1989 | Dutch Open | A07 King's Indian Attack |
| 35. P du Chattel vs J Vogel |
| ½-½ | 44 | 1989 | Dutch Open | C00 French Defense |
| 36. M Etmans vs P du Chattel |
| ½-½ | 46 | 1989 | Dutch Open | B00 Uncommon King's Pawn Opening |
| 37. P du Chattel vs M Forster |
| 0-1 | 27 | 1989 | Dutch Open | C00 French Defense |
| 38. P du Chattel vs P Nieuwenhuis |
| 1-0 | 22 | 1990 | Utrecht | B45 Sicilian, Taimanov |
| 39. A J Schwartz vs P du Chattel |
| 0-1 | 36 | 1990 | Utrecht | B00 Uncommon King's Pawn Opening |
| 40. A Driedonks vs P du Chattel |
| 0-1 | 36 | 1990 | Utrecht | A40 Queen's Pawn Game |
Kibitzing
