| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. S J Solomon vs M Bosboom |
| 0-1 | 56 | 1984 | Regency Masters | B09 Pirc, Austrian Attack |
| 27. M Bosboom vs E Teichmann |
  | 1-0 | 37 | 1984 | Regency Masters | C39 King's Gambit Accepted |
| 28. Forintos vs M Bosboom |
| 1-0 | 69 | 1984 | Regency Masters | A57 Benko Gambit |
| 29. M Bosboom vs N Povah |
| 0-1 | 35 | 1984 | Regency Masters | B22 Sicilian, Alapin |
| 30. A Dunnington vs M Bosboom |
| ½-½ | 27 | 1984 | Regency Masters | E69 King's Indian, Fianchetto, Classical Main line |
| 31. B Jacobsen vs M Bosboom |
| 0-1 | 41 | 1985 | Politiken Cup | A23 English, Bremen System, Keres Variation |
| 32. M Bosboom vs G Jacoby |
| 0-1 | 41 | 1985 | Politiken Cup | B95 Sicilian, Najdorf, 6...e6 |
| 33. M Bosboom vs S Clausen |
| ½-½ | 75 | 1985 | Politiken Cup | B09 Pirc, Austrian Attack |
| 34. M Fette vs M Bosboom |
| 1-0 | 36 | 1985 | Politiken Cup | C50 Giuoco Piano |
| 35. M Bosboom vs J Fridjonsson |
| 0-1 | 33 | 1985 | Politiken Cup | B12 Caro-Kann Defense |
| 36. M Reinert vs M Bosboom |
| ½-½ | 30 | 1985 | Politiken Cup | B09 Pirc, Austrian Attack |
| 37. M Bosboom vs P N Andreasen |
| 1-0 | 19 | 1985 | Politiken Cup | B14 Caro-Kann, Panov-Botvinnik Attack |
| 38. S Brynell vs M Bosboom |
| ½-½ | 41 | 1985 | Politiken Cup | B12 Caro-Kann Defense |
| 39. T Stelting vs M Bosboom |
| 0-1 | 43 | 1985 | Politiken Cup | C80 Ruy Lopez, Open |
| 40. J Hector vs M Bosboom |
| 1-0 | 26 | 1985 | Politiken Cup | B09 Pirc, Austrian Attack |
| 41. M Bosboom vs D H Campora |
| ½-½ | 68 | 1985 | Amsterdam OHRA | B14 Caro-Kann, Panov-Botvinnik Attack |
| 42. B Enklaar vs M Bosboom |
| ½-½ | 51 | 1985 | Amsterdam OHRA | E95 King's Indian, Orthodox, 7...Nbd7, 8.Re1 |
| 43. M Bosboom vs H Bohm |
| 0-1 | 24 | 1985 | Amsterdam OHRA | C15 French, Winawer |
| 44. R Hartoch vs M Bosboom |
| 1-0 | 57 | 1985 | Amsterdam OHRA | B20 Sicilian |
| 45. M Bosboom vs P Boersma |
| 0-1 | 53 | 1985 | Amsterdam OHRA | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 46. W de Kok vs M Bosboom |
| 0-1 | 56 | 1985 | Amsterdam OHRA | E94 King's Indian, Orthodox |
| 47. S Belkhodja vs M Bosboom |
| ½-½ | 62 | 1985 | Amsterdam OHRA | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 48. M Bosboom vs E Ermenkov |
| 1-0 | 41 | 1985 | Amsterdam OHRA | C34 King's Gambit Accepted |
| 49. Lombardy vs M Bosboom |
| 1-0 | 28 | 1985 | Amsterdam OHRA | B50 Sicilian |
| 50. M Bosboom vs D K Johansen |
| 1-0 | 24 | 1986 | Biel MTO Open | C12 French, McCutcheon |
Kibitzing
