| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Trepp vs G Cools |
| 1-0 | 38 | 1981 | World Junior Championship | C77 Ruy Lopez |
| 27. M Trepp vs Hjartarson |
| 0-1 | 48 | 1981 | World Junior Championship | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 28. M Trepp vs B Sorensen |
| 0-1 | 36 | 1982 | Politiken Cup | C07 French, Tarrasch |
| 29. M Trepp vs G Carlsson |
| 1-0 | 38 | 1982 | Politiken Cup | C77 Ruy Lopez |
| 30. M Trepp vs J O Fries-Nielsen |
| 0-1 | 38 | 1982 | Politiken Cup | C41 Philidor Defense |
| 31. M Trepp vs E Bentzen |
 | 0-1 | 12 | 1982 | Politiken Cup | C45 Scotch Game |
| 32. M Trepp vs T Rosenlund |
| 1-0 | 34 | 1982 | Politiken Cup | B16 Caro-Kann, Bronstein-Larsen Variation |
| 33. D Heinbuch vs M Trepp |
| 1-0 | 42 | 1982 | Politiken Cup | A19 English, Mikenas-Carls, Sicilian Variation |
| 34. M Trepp vs K J Wicker |
| 0-1 | 40 | 1982 | Politiken Cup | C03 French, Tarrasch |
| 35. V Jensen vs M Trepp |
| ½-½ | 46 | 1982 | Politiken Cup | B22 Sicilian, Alapin |
| 36. L Pliester vs M Trepp |
| 1-0 | 37 | 1982 | Politiken Cup | E52 Nimzo-Indian, 4.e3, Main line with ...b6 |
| 37. G Kraehenbuehl vs M Trepp |
| ½-½ | 96 | 1982 | Politiken Cup | A04 Reti Opening |
| 38. M Trepp vs G Blackburn |
| 1-0 | 31 | 1982 | Lucerne Olympiad | B70 Sicilian, Dragon Variation |
| 39. Y Gruenfeld vs M Trepp |
| ½-½ | 52 | 1982 | Lucerne Olympiad | B62 Sicilian, Richter-Rauzer |
| 40. M Trepp vs Quinteros |
| 0-1 | 41 | 1982 | Lucerne Olympiad | B90 Sicilian, Najdorf |
| 41. M Trepp vs D Rivera |
| ½-½ | 26 | 1982 | Lucerne Olympiad | B33 Sicilian |
| 42. M Trepp vs Ribli |
| 1-0 | 41 | 1982 | Lucerne Olympiad | B90 Sicilian, Najdorf |
| 43. A Fernandez vs M Trepp |
| 0-1 | 40 | 1982 | Lucerne Olympiad | B62 Sicilian, Richter-Rauzer |
| 44. M Trepp vs J Sunye Neto |
| ½-½ | 40 | 1982 | Lucerne Olympiad | B90 Sicilian, Najdorf |
| 45. F Muco vs M Trepp |
| ½-½ | 53 | 1982 | Lucerne Olympiad | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 46. Z Franco Ocampos vs M Trepp |
| 1-0 | 31 | 1982 | Lucerne Olympiad | E12 Queen's Indian |
| 47. M Trepp vs D Dunne |
| 0-1 | 45 | 1982 | Lucerne Olympiad | B82 Sicilian, Scheveningen |
| 48. W Liu vs M Trepp |
| 1-0 | 26 | 1982 | Lucerne Olympiad | B62 Sicilian, Richter-Rauzer |
| 49. M Trepp vs B Kouatly |
| ½-½ | 27 | 1982 | Lucerne Olympiad | A07 King's Indian Attack |
| 50. J Arnason vs M Trepp |
| 1-0 | 41 | 1983 | WchT U26 | B62 Sicilian, Richter-Rauzer |
Kibitzing
