| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. A Pridorozhni vs J Berkvens |
| 0-1 | 28 | 1999 | EU-ch U18 | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 27. L Vajda vs J Berkvens |
| 0-1 | 29 | 1999 | World Championship U18 | B22 Sicilian, Alapin |
| 28. J Berkvens vs Fressinet |
| 0-1 | 60 | 1999 | World Championship U18 | A03 Bird's Opening |
| 29. Buhmann vs J Berkvens |
| 0-1 | 43 | 1999 | World Championship U18 | A85 Dutch, with c4 & Nc3 |
| 30. J Berkvens vs Fedorchuk |
| 0-1 | 18 | 1999 | World Championship U18 | C33 King's Gambit Accepted |
| 31. P Acs vs J Berkvens |
| 1-0 | 22 | 1999 | World Championship U18 | B90 Sicilian, Najdorf |
| 32. J Berkvens vs J Blot |
| 0-1 | 34 | 1999 | World Championship U18 | E77 King's Indian |
| 33. A S Rasmussen vs J Berkvens |
| ½-½ | 16 | 2000 | Hallsberg op | C45 Scotch Game |
| 34. H Tikkanen vs J Berkvens |
| 0-1 | 56 | 2000 | Hallsberg op | A81 Dutch |
| 35. J Berkvens vs Nisipeanu |
| ½-½ | 71 | 2000 | Corus Group B | B10 Caro-Kann |
| 36. W Hendriks vs J Berkvens |
| ½-½ | 27 | 2000 | Corus Group B | B90 Sicilian, Najdorf |
| 37. J Berkvens vs M Ashley |
| ½-½ | 21 | 2000 | Corus Group B | B90 Sicilian, Najdorf |
| 38. D Reinderman vs J Berkvens |
 | 1-0 | 17 | 2000 | Corus Group B | B23 Sicilian, Closed |
| 39. J Berkvens vs Onischuk |
| 0-1 | 36 | 2000 | Corus Group B | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 40. J Berkvens vs Avrukh |
| 0-1 | 44 | 2000 | Corus Group B | B09 Pirc, Austrian Attack |
| 41. S Danailov vs J Berkvens |
| 1-0 | 36 | 2000 | Corus Group B | A81 Dutch |
| 42. J Berkvens vs Nijboer |
| 0-1 | 18 | 2000 | Corus Group B | B06 Robatsch |
| 43. Tiviakov vs J Berkvens |
| 0-1 | 30 | 2000 | Corus Group B | B93 Sicilian, Najdorf, 6.f4 |
| 44. J Berkvens vs J Delemarre |
| 1-0 | 37 | 2000 | Corus Group B | B09 Pirc, Austrian Attack |
| 45. Van der Wiel vs J Berkvens |
| 1-0 | 35 | 2000 | Corus Group B | B82 Sicilian, Scheveningen |
| 46. C Navrotescu vs J Berkvens |
| 1-0 | 56 | 2000 | Cappelle Open | A43 Old Benoni |
| 47. J Berkvens vs A Los |
| 1-0 | 31 | 2000 | Zwolle Open | C74 Ruy Lopez, Modern Steinitz Defense |
| 48. J Berkvens vs Tiviakov |
| 0-1 | 35 | 2000 | Zwolle Open | B75 Sicilian, Dragon, Yugoslav Attack |
| 49. J Berkvens vs G van Otten |
| ½-½ | 40 | 2000 | Zwolle Open | B62 Sicilian, Richter-Rauzer |
| 50. H Kallio vs J Berkvens |
| 0-1 | 57 | 2000 | Budapest FS04 GM | B90 Sicilian, Najdorf |
Kibitzing
