| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. A de Groot vs D Cleto |
| 0-1 | 42 | 1999 | EM/MN/010 | B07 Pirc |
| 27. F Trani vs A de Groot |
| 1-0 | 54 | 1999 | EM/MN/010 | A07 King's Indian Attack |
| 28. C Sender vs A de Groot |
| 1-0 | 41 | 1999 | EM/MN/010 | E33 Nimzo-Indian, Classical |
| 29. A Alpert vs A de Groot |
| 1-0 | 40 | 1999 | EM/MN/010 | E97 King's Indian |
| 30. F Costa vs A de Groot |
| 0-1 | 39 | 1999 | EM/MN/010 | D20 Queen's Gambit Accepted |
| 31. M Elent vs A de Groot |
| ½-½ | 29 | 1999 | EM/MN/010 | B98 Sicilian, Najdorf |
| 32. A de Groot vs G Carlsson |
| 1-0 | 41 | 1999 | EM/MN/010 | B76 Sicilian, Dragon, Yugoslav Attack |
| 33. A de Groot vs D Eilmes |
| ½-½ | 36 | 1999 | EM/MN/010 | E67 King's Indian, Fianchetto |
| 34. A de Groot vs G Vicoli |
| ½-½ | 51 | 1999 | EM/MN/010 | B32 Sicilian |
| 35. A de Groot vs R Galerne |
| 1-0 | 30 | 1999 | EM/M/A076 | B76 Sicilian, Dragon, Yugoslav Attack |
| 36. J Stephan vs A de Groot |
| 0-1 | 55 | 1999 | EM/M/A076 | B22 Sicilian, Alapin |
| 37. M Nowakowski vs A de Groot |
 | ½-½ | 32 | 1999 | EM/M/A076 | A58 Benko Gambit |
| 38. J C Knudsen vs A de Groot |
| ½-½ | 33 | 1999 | EM/M/A076 | A57 Benko Gambit |
| 39. A de Groot vs R Thomas |
| ½-½ | 25 | 1999 | EM/M/A076 | B92 Sicilian, Najdorf, Opocensky Variation |
| 40. A de Groot vs J J Mackie |
| 1-0 | 23 | 1999 | EM/M/A076 | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 41. A de Groot vs J C Hidalgo |
| 1-0 | 39 | 1999 | EM/M/A076 | C95 Ruy Lopez, Closed, Breyer |
| 42. A de Groot vs M Brezovar |
| ½-½ | 50 | 2000 | EM/OL14/G1/B4 ICCF Email | B42 Sicilian, Kan |
| 43. A de Groot vs V Vostrotin |
| ½-½ | 41 | 2001 | EM/M/A137 ICCF Email | B42 Sicilian, Kan |
| 44. A de Groot vs F Fleischanderl |
| ½-½ | 36 | 2002 | W-ch26 sf05 email | C80 Ruy Lopez, Open |
| 45. A de Groot vs A Ludgate |
| ½-½ | 32 | 2003 | W-ch27 sf07 email | B06 Robatsch |
| 46. A de Groot vs I Brooks |
| 0-1 | 28 | 2006 | WCCC26CT04(WS) | B23 Sicilian, Closed |
| 47. A de Groot vs M Glazman |
| 1-0 | 48 | 2006 | WCCC26CT04(WS) | B23 Sicilian, Closed |
Kibitzing
