| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. I Sokolov vs M Dutreeuw |
| 1-0 | 48 | 1988 | Brocco Open | D31 Queen's Gambit Declined |
| 27. J Baumgartner vs M Dutreeuw |
| 0-1 | 34 | 1988 | Brocco Open | A28 English |
| 28. M Dutreeuw vs C Lutz |
| 1-0 | 23 | 1988 | Brocco Open | B80 Sicilian, Scheveningen |
| 29. M Dutreeuw vs W Iclicki |
| 1-0 | 51 | 1989 | London Haringey | B17 Caro-Kann, Steinitz Variation |
| 30. M Dutreeuw vs Adams |
| 0-1 | 29 | 1989 | London Haringey | C16 French, Winawer |
| 31. M Dutreeuw vs I Nemet |
| ½-½ | 36 | 1989 | Brocco Open | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 32. Petursson vs M Dutreeuw |
| ½-½ | 56 | 1989 | Brocco Open | E06 Catalan, Closed, 5.Nf3 |
| 33. M Dutreeuw vs D Summermatter |
| ½-½ | 64 | 1989 | Brocco Open | B81 Sicilian, Scheveningen, Keres Attack |
| 34. I Sokolov vs M Dutreeuw |
| 1-0 | 24 | 1989 | Brocco Open | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 35. S Kindermann vs M Dutreeuw |
| 1-0 | 41 | 1989 | EUR-chT (Open) 9th | C92 Ruy Lopez, Closed |
| 36. M Dutreeuw vs I Ben-Menachem |
| ½-½ | 46 | 1989 | EUR-chT (Open) 9th | C60 Ruy Lopez |
| 37. M Dutreeuw vs S Soylu |
| 1-0 | 36 | 1989 | EUR-chT (Open) 9th | B90 Sicilian, Najdorf |
| 38. P Carton vs M Dutreeuw |
| ½-½ | 42 | 1989 | EUR-chT (Open) 9th | D24 Queen's Gambit Accepted |
| 39. V Inkiov vs M Dutreeuw |
| ½-½ | 18 | 1989 | EUR-chT (Open) 9th | E06 Catalan, Closed, 5.Nf3 |
| 40. C F Morris vs M Dutreeuw |
| 1-0 | 55 | 1989 | EUR-chT (Open) 9th | D55 Queen's Gambit Declined |
| 41. M Dutreeuw vs D Michael |
| 1-0 | 48 | 1989 | EUR-chT (Open) 9th | B18 Caro-Kann, Classical |
| 42. M Dutreeuw vs P Blaeser |
| 0-1 | 34 | 1989 | EUR-chT (Open) 9th | B29 Sicilian, Nimzovich-Rubinstein |
| 43. M Jukic vs M Dutreeuw |
| 1-0 | 30 | 1990 | Geneva Open | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 44. M Dutreeuw vs J Hector |
 | 1-0 | 36 | 1990 | Geneva Open | C40 King's Knight Opening |
| 45. M Dutreeuw vs H Fioramonti |
| 1-0 | 42 | 1990 | Geneva Open | B05 Alekhine's Defense, Modern |
| 46. E Preissmann vs M Dutreeuw |
| ½-½ | 41 | 1990 | Geneva Open | C56 Two Knights |
| 47. Petursson vs M Dutreeuw |
| 1-0 | 27 | 1990 | Brocco Open | D31 Queen's Gambit Declined |
| 48. M Dutreeuw vs S Kamuhangire |
| 1-0 | 40 | 1990 | Novi Sad Olympiad | B08 Pirc, Classical |
| 49. D Barua vs M Dutreeuw |
| ½-½ | 59 | 1990 | Novi Sad Olympiad | C55 Two Knights Defense |
| 50. R Ye vs M Dutreeuw |
| 1-0 | 41 | 1990 | Novi Sad Olympiad | D03 Torre Attack (Tartakower Variation) |
Kibitzing
