| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. P De Rooi vs F Kuijpers |
| 1-0 | 31 |
1961 |
IBM | B31 Sicilian, Rossolimo Variation |
| 2. P De Rooi vs C B Van den Berg |
| 1-0 | 39 |
1961 |
IBM | B40 Sicilian |
| 3. P Smederevac vs P De Rooi |
| 1-0 | 29 |
1962 |
Beverwijk | C44 King's Pawn Game |
| 4. P De Rooi vs Portisch |
| 0-1 | 33 |
1963 |
Amsterdam | C68 Ruy Lopez, Exchange |
| 5. P De Rooi vs M Czerniak |
| 1-0 | 44 |
1963 |
IBM | A16 English |
| 6. F Kuijpers vs P De Rooi |
| 1-0 | 36 |
1963 |
IBM | B24 Sicilian, Closed |
| 7. P De Rooi vs A Dunkelblum |
| ½-½ | 23 |
1964 |
Beverwijk I | C15 French, Winawer |
| 8. Parma vs P De Rooi |
| 1-0 | 38 |
1964 |
Beverwijk I | B32 Sicilian |
| 9. Keres vs P De Rooi |
| 1-0 | 37 |
1964 |
Beverwijk | B35 Sicilian, Accelerated Fianchetto, Modern Variation with Bc4 |
| 10. T Krabbe vs P De Rooi |
 | 1-0 | 22 |
1964 |
Amsterdam prel. ch Netherlands | B17 Caro-Kann, Steinitz Variation |
| 11. J H Donner vs P De Rooi |
| ½-½ | 53 |
1964 |
Beverwijk I | A40 Queen's Pawn Game |
| 12. P De Rooi vs I Nei |
| ½-½ | 17 |
1964 |
Hoogovens | D27 Queen's Gambit Accepted, Classical |
| 13. L Lengyel vs P De Rooi |
| 1-0 | 28 |
1964 |
Beverwijk I | E60 King's Indian Defense |
| 14. Ivkov vs P De Rooi |
| 1-0 | 46 |
1964 |
Beverwijk | D37 Queen's Gambit Declined |
| 15. Larsen vs P De Rooi |
| 1-0 | 43 |
1964 |
Hoogovens | E71 King's Indian, Makagonov System (5.h3) |
| 16. P De Rooi vs K Darga |
| 0-1 | 60 |
1964 |
Hoogovens | B42 Sicilian, Kan |
| 17. C Zuidema vs P De Rooi |
| 1-0 | 42 |
1964 |
Beverwijk I | B32 Sicilian |
| 18. P De Rooi vs M Bobotsov |
| 0-1 | 27 |
1964 |
Hoogovens | A26 English |
| 19. P De Rooi vs C B Van den Berg |
| 0-1 | 25 |
1964 |
Hoogovens | D01 Richter-Veresov Attack |
| 20. Portisch vs P De Rooi |
| 1-0 | 36 |
1964 |
Beverwijk | E71 King's Indian, Makagonov System (5.h3) |
| 21. P De Rooi vs T Van Scheltinga |
| 0-1 | 34 |
1964 |
Beverwijk I | A17 English |
| 22. P De Rooi vs Filip |
| 0-1 | 39 |
1964 |
Hoogovens | B42 Sicilian, Kan |
| 23. R De Graaff vs P De Rooi |
| 1-0 | 35 |
1965 |
? | C51 Evans Gambit |
| 24. Balashov vs P De Rooi |
| 1-0 | 39 |
1965 |
Hoogovens-B | E90 King's Indian |
| 25. P Smederevac vs P De Rooi |
| 1-0 | 34 |
1967 |
Amsterdam IBM II | C44 King's Pawn Game |