| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. L Mazi vs J Bosch |
| 1-0 | 63 | 1990 | Dutch Open | B40 Sicilian |
| 27. J Bosch vs B den Boer |
| ½-½ | 13 | 1990 | Dutch Open | B42 Sicilian, Kan |
| 28. H Klip vs J Bosch |
| 1-0 | 45 | 1990 | Dutch Open | B40 Sicilian |
| 29. J R Markus vs J Bosch |
| 0-1 | 42 | 1990 | Dutch Open | A46 Queen's Pawn Game |
| 30. J Bosch vs F Krudde |
| ½-½ | 16 | 1990 | Dutch Open | B01 Scandinavian |
| 31. T Bottema vs J Bosch |
| 1-0 | 56 | 1990 | Dutch Open | B33 Sicilian |
| 32. J Bosch vs M Heintze |
| 1-0 | 23 | 1990 | Dutch Open | C42 Petrov Defense |
| 33. J Bosch vs S Loeffler |
| 1-0 | 34 | 1991 | Kecskemet Szechenyi-B | C45 Scotch Game |
| 34. J Bosch vs R Cifuentes |
| 0-1 | 45 | 1991 | Netherlands | B88 Sicilian, Fischer-Sozin Attack |
| 35. J Bosch vs Van Wely |
| 0-1 | 52 | 1992 | Hyeres op | B86 Sicilian, Fischer-Sozin Attack |
| 36. D Komljenovic vs J Bosch |
| 1-0 | 35 | 1993 | Barcelona op 9394 | A80 Dutch |
| 37. M Marsal Valles vs J Bosch |
| ½-½ | 47 | 1993 | Vilanova op | B00 Uncommon King's Pawn Opening |
| 38. H Danielsen vs J Bosch |
| 1-0 | 41 | 1993 | Leeuwarden Open | A04 Reti Opening |
| 39. J Bosch vs P Straub |
| 1-0 | 29 | 1993 | Leeuwarden Open | C46 Three Knights |
| 40. J Bosch vs Kharlov |
| 1-0 | 55 | 1993 | Leeuwarden Open | B57 Sicilian |
| 41. N Davies vs J Bosch |
| 0-1 | 34 | 1993 | Leeuwarden Open | A04 Reti Opening |
| 42. J Bosch vs Yakovich |
 | 1-0 | 38 | 1993 | Leeuwarden Open | B33 Sicilian |
| 43. J Horvath vs J Bosch |
| ½-½ | 13 | 1993 | Leeuwarden Open | D20 Queen's Gambit Accepted |
| 44. J Bosch vs J Piket |
| 0-1 | 30 | 1993 | Leeuwarden Open | C48 Four Knights |
| 45. D Reinderman vs J Bosch |
| ½-½ | 13 | 1993 | Leeuwarden Open | B23 Sicilian, Closed |
| 46. R Cifuentes vs J Bosch |
| ½-½ | 34 | 1993 | Leeuwarden Open | D02 Queen's Pawn Game |
| 47. G Timmerman vs J Bosch |
| 0-1 | 42 | 1993 | NED-ch sf | B32 Sicilian |
| 48. R Ziatdinov vs J Bosch |
| 0-1 | 57 | 1993 | Groningen Open | B36 Sicilian, Accelerated Fianchetto |
| 49. D Zoler vs J Bosch |
| ½-½ | 26 | 1993 | Groningen Open | D21 Queen's Gambit Accepted |
| 50. J Bosch vs Y Nesterov |
| 1-0 | 32 | 1993 | Groningen Open | A42 Modern Defense, Averbakh System |
Kibitzing
