| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Brink vs R de Boer |
| 1-0 | 42 |
1987 |
corres NLD | C33 King's Gambit Accepted |
| 2. R de Boer vs V Sogaard |
| 1-0 | 46 |
1988 |
WT/M/GT/246 | E21 Nimzo-Indian, Three Knights |
| 3. U Skorna vs R de Boer |
| ½-½ | 43 |
1988 |
WT/M/GT/246 | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 4. R de Boer vs O Skaslien |
| 0-1 | 30 |
1988 |
WT/M/GT/246 | D93 Grunfeld, with Bf4 & e3 |
| 5. B Gorokhovsky vs R de Boer |
| 1-0 | 24 |
1988 |
WT/M/GT/246 | B93 Sicilian, Najdorf, 6.f4 |
| 6. R de Boer vs H Horta |
| 0-1 | 39 |
1989 |
WT/M/GT/262 | D25 Queen's Gambit Accepted |
| 7. R de Boer vs D Langerak |
| 0-1 | 18 |
1989 |
corr NL ch 17 | C05 French, Tarrasch |
| 8. R de Boer vs V Kashlyuk |
| 0-1 | 24 |
1989 |
WT/M/GT/262 | E15 Queen's Indian |
| 9. M Etmans vs R de Boer |
| ½-½ | 40 |
1989 |
corr NL ch 17 | C77 Ruy Lopez |
| 10. R de Boer vs W Terpstra |
| ½-½ | 27 |
1989 |
corr NL ch 17 | D93 Grunfeld, with Bf4 & e3 |
| 11. R de Boer vs Alingh Prins J |
| 1-0 | 45 |
1989 |
corr NL ch 17 | E21 Nimzo-Indian, Three Knights |
| 12. R de Boer vs H Galje |
 | 1-0 | 49 |
1989 |
corr NL ch 17 | D19 Queen's Gambit Declined Slav, Dutch |
| 13. R de Boer vs J Schellingerhout |
| 1-0 | 49 |
1989 |
corr NL ch 17 | E94 King's Indian, Orthodox |
| 14. R de Boer vs J R Markus |
| ½-½ | 35 |
1989 |
corr NL ch 17 | A57 Benko Gambit |
| 15. U Wedemeyer vs R de Boer |
| ½-½ | 28 |
1989 |
WT/M/GT/262 | C82 Ruy Lopez, Open |
| 16. R Thierry vs R de Boer |
| ½-½ | 27 |
1989 |
corr NL ch 17 | C80 Ruy Lopez, Open |
| 17. J de Vries vs R de Boer |
| 0-1 | 32 |
1989 |
corr NL ch 17 | A56 Benoni Defense |
| 18. R de Boer vs L Compagnie |
 | 1-0 | 14 |
1989 |
corr NL ch 17 | D19 Queen's Gambit Declined Slav, Dutch |
| 19. R de Boer vs W Nitsche |
| ½-½ | 23 |
1989 |
WT/M/GT/262 | E92 King's Indian |
| 20. C P Gouw vs R de Boer |
| 0-1 | 25 |
1989 |
corr NL ch 17 | A56 Benoni Defense |
| 21. A W De Visser vs R de Boer |
| ½-½ | 34 |
1989 |
corr NL ch 17 | A00 Uncommon Opening |