| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Pavlovic vs M Beulen |
| 1-0 | 31 | 1989 | Forli Open | A04 Reti Opening |
| 27. M Beulen vs B Bartsch |
| ½-½ | 61 | 1989 | Forli Open | B29 Sicilian, Nimzovich-Rubinstein |
| 28. M Pastorini vs M Beulen |
| ½-½ | 13 | 1989 | Forli Open | C16 French, Winawer |
| 29. M Beulen vs B den Boer |
| ½-½ | 16 | 1989 | Forli Open | B09 Pirc, Austrian Attack |
| 30. M Beulen vs S de Eccher |
| ½-½ | 25 | 1989 | Forli Open | B77 Sicilian, Dragon, Yugoslav Attack |
| 31. M Beulen vs P J Sowray |
| 0-1 | 52 | 1989 | Dutch Open | C61 Ruy Lopez, Bird's Defense |
| 32. P D Kemp vs M Beulen |
| ½-½ | 31 | 1989 | Dutch Open | A11 English, Caro-Kann Defensive System |
| 33. R Dam vs M Beulen |
| 1-0 | 41 | 1989 | Dutch Open | D16 Queen's Gambit Declined Slav |
| 34. M Beulen vs J R Markus |
| ½-½ | 13 | 1989 | Dutch Open | C84 Ruy Lopez, Closed |
| 35. O Wilgenhof vs M Beulen |
| 1-0 | 61 | 1989 | Dutch Open | D02 Queen's Pawn Game |
| 36. M Beulen vs J Voormans |
| ½-½ | 10 | 1989 | Dutch Open | A46 Queen's Pawn Game |
| 37. M van der Linde vs M Beulen |
| ½-½ | 20 | 1989 | Dutch Open | D12 Queen's Gambit Declined Slav |
| 38. R Geisler vs M Beulen |
| ½-½ | 6 | 1989 | Dutch Open | D15 Queen's Gambit Declined Slav |
| 39. M Beulen vs J Vanheste |
| 0-1 | 26 | 1989 | Dutch Open | B80 Sicilian, Scheveningen |
| 40. M Beulen vs K Langeweg |
| 0-1 | 60 | 1989 | Groningen Open | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 41. M Fette vs M Beulen |
| 1-0 | 39 | 1989 | Groningen Open | C16 French, Winawer |
| 42. P Kindl vs M Beulen |
| ½-½ | 42 | 1989 | Groningen Open | D15 Queen's Gambit Declined Slav |
| 43. M Beulen vs M Kaminski |
| ½-½ | 42 | 1989 | Groningen Open | B90 Sicilian, Najdorf |
| 44. H Perez Garcia vs M Beulen |
| ½-½ | 14 | 1989 | Groningen Open | A07 King's Indian Attack |
| 45. M Beulen vs G Pieterse |
| ½-½ | 45 | 1989 | Groningen Open | B16 Caro-Kann, Bronstein-Larsen Variation |
| 46. R Dam vs M Beulen |
| 1-0 | 58 | 1989 | Groningen Open | C07 French, Tarrasch |
| 47. M Beulen vs M van Schaardenburg |
| 1-0 | 75 | 1989 | Groningen Open | C40 King's Knight Opening |
| 48. M Beulen vs P Boersma |
| 0-1 | 20 | 1989 | Groningen Open | B10 Caro-Kann |
| 49. F A Cuijpers vs M Beulen |
| 1-0 | 47 | 1990 | Dutch Open | C16 French, Winawer |
| 50. M Beulen vs V Ravikumar |
| ½-½ | 21 | 1990 | Dutch Open | B32 Sicilian |
Kibitzing
