| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Jonker vs T Polak |
| ½-½ | 59 | 1991 | World Championship U18 | B50 Sicilian |
| 27. C Gokhale vs M Jonker |
| ½-½ | 34 | 1991 | World Championship U18 | E97 King's Indian |
| 28. E Liss vs M Jonker |
| 1-0 | 50 | 1991 | World Championship U18 | B07 Pirc |
| 29. M Jonker vs M Huberty |
| 1-0 | 36 | 1991 | World Championship U18 | B50 Sicilian |
| 30. M Granados Gomez vs M Jonker |
| 1-0 | 39 | 1991 | World Championship U18 | A46 Queen's Pawn Game |
| 31. M Jonker vs A Jakubiec |
| 0-1 | 55 | 1991 | World Championship U18 | B90 Sicilian, Najdorf |
| 32. M Jonker vs H Loebler |
| 1-0 | 38 | 1991 | World Championship U18 | B30 Sicilian |
| 33. Kramnik vs M Jonker |
| 1-0 | 26 | 1991 | World Championship U18 | B07 Pirc |
| 34. P H Nielsen vs M Jonker |
| 0-1 | 53 | 1991 | World Championship U18 | B07 Pirc |
| 35. M Jonker vs M Playa |
| ½-½ | 71 | 1991 | World Championship U18 | C17 French, Winawer, Advance |
| 36. B Kohlweyer vs M Jonker |
| ½-½ | 24 | 1991 | Groningen Open | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 37. M Jonker vs J Blauert |
| 0-1 | 48 | 1991 | Groningen Open | C16 French, Winawer |
| 38. M Jonker vs L Keitlinghaus |
| ½-½ | 54 | 1991 | Groningen Open | C10 French |
| 39. O Renet vs M Jonker |
| 1-0 | 21 | 1991 | Groningen Open | B07 Pirc |
| 40. M Jonker vs E Hoeksema |
| ½-½ | 44 | 1991 | Groningen Open | B50 Sicilian |
| 41. M Jonker vs R Schweda |
| ½-½ | 22 | 1992 | World Championship U18 | B50 Sicilian |
| 42. R Liiva vs M Jonker |
| 0-1 | 57 | 1992 | World Championship U18 | B07 Pirc |
| 43. I Fancsy vs M Jonker |
| 1-0 | 34 | 1992 | World Championship U18 | E69 King's Indian, Fianchetto, Classical Main line |
| 44. M Jonker vs J Pitterson |
| 1-0 | 41 | 1992 | World Championship U18 | B53 Sicilian |
| 45. R Ahundov vs M Jonker |
| ½-½ | 40 | 1992 | World Championship U18 | B00 Uncommon King's Pawn Opening |
| 46. D Langier vs M Jonker |
| ½-½ | 44 | 1992 | World Championship U18 | B07 Pirc |
| 47. M Jonker vs A Escobedo Tinajero |
| 1-0 | 54 | 1992 | World Championship U18 | C14 French, Classical |
| 48. O Danielian vs M Jonker |
| 1-0 | 26 | 1992 | World Championship U18 | A41 Queen's Pawn Game (with ...d6) |
| 49. V Danilov vs M Jonker |
| ½-½ | 31 | 1992 | World Championship U18 | E69 King's Indian, Fianchetto, Classical Main line |
| 50. M Jonker vs A M Mohamed Ali |
| 1-0 | 57 | 1992 | World Championship U18 | B06 Robatsch |
Kibitzing
