| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Vanheste vs F Krudde |
| 0-1 | 52 | 1989 | Dutch Open | A30 English, Symmetrical |
| 27. F Krudde vs R Cifuentes |
| 0-1 | 63 | 1989 | Dutch Open | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 28. P Ostojic vs F Krudde |
| 1-0 | 19 | 1989 | Dutch Open | B93 Sicilian, Najdorf, 6.f4 |
| 29. G de Boer vs F Krudde |
| 1-0 | 36 | 1989 | Dutch Open | A77 Benoni, Classical, 9...Re8, 10.Nd2 |
| 30. F Krudde vs P D Kemp |
| 1-0 | 115 | 1989 | Dutch Open | D20 Queen's Gambit Accepted |
| 31. B den Boer vs F Krudde |
| 1-0 | 41 | 1989 | Dutch Open | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 32. A van de Oudeweetering vs F Krudde |
| ½-½ | 19 | 1989 | Dutch Open | C10 French |
| 33. N Kirov vs F Krudde |
| 1-0 | 29 | 1989 | Groningen Open | A30 English, Symmetrical |
| 34. J van Mil vs F Krudde |
| 1-0 | 48 | 1989 | Groningen Open | C10 French |
| 35. F Krudde vs R Dam |
| 1-0 | 41 | 1989 | Groningen Open | E70 King's Indian |
| 36. E Ermenkov vs F Krudde |
| 1-0 | 73 | 1989 | Groningen Open | C03 French, Tarrasch |
| 37. F Krudde vs M Bosman |
| ½-½ | 56 | 1989 | Groningen Open | A00 Uncommon Opening |
| 38. F Krudde vs P Kindl |
| 0-1 | 61 | 1989 | Groningen Open | A30 English, Symmetrical |
| 39. H Perez Garcia vs F Krudde |
| 1-0 | 35 | 1989 | Groningen Open | A07 King's Indian Attack |
| 40. F Krudde vs S Polgar |
| 1-0 | 71 | 1990 | NED-chT | A57 Benko Gambit |
| 41. F Krudde vs R Ziatdinov |
| 0-1 | 24 | 1990 | Dutch Open | D37 Queen's Gambit Declined |
| 42. S van Gisbergen vs F Krudde |
| 1-0 | 47 | 1990 | Dutch Open | A41 Queen's Pawn Game (with ...d6) |
| 43. F Krudde vs A Dekker |
 | ½-½ | 59 | 1990 | Dutch Open | A07 King's Indian Attack |
| 44. A van der Weij vs F Krudde |
| ½-½ | 48 | 1990 | Dutch Open | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 45. F Krudde vs M Jonker |
| ½-½ | 48 | 1990 | Dutch Open | A53 Old Indian |
| 46. R Osterman vs F Krudde |
| 1-0 | 34 | 1990 | Dutch Open | D37 Queen's Gambit Declined |
| 47. J Bosch vs F Krudde |
| ½-½ | 16 | 1990 | Dutch Open | B01 Scandinavian |
| 48. F Krudde vs O Rubingh |
| 0-1 | 22 | 1990 | Dutch Open | A97 Dutch, Ilyin-Genevsky |
| 49. O Wilgenhof vs F Krudde |
| 1-0 | 40 | 1990 | Dutch Open | A43 Old Benoni |
| 50. Korchnoi vs F Krudde |
| 0-1 | 32 | 1990 | Blindfold simul, 5b | B01 Scandinavian |
Kibitzing
