| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. P Dijkstra vs P van Hoorn |
| ½-½ | 24 | 1907 | Hilversum | C46 Three Knights |
| 2. Rotlewi vs P van Hoorn |
| 1-0 | 40 | 1911 | Simul, 28b | D33 Queen's Gambit Declined, Tarrasch |
| 3. G Oskam vs P van Hoorn |
| 1-0 | 38 | 1916 | NED-ch | C44 King's Pawn Game |
| 4. Olland vs P van Hoorn |
 | 1-0 | 42 | 1916 | Amsterdam | C23 Bishop's Opening |
| 5. P van Hoorn vs M Marchand |
 | ½-½ | 31 | 1916 | Amsterdam | B20 Sicilian |
| 6. P van Hoorn vs H Weenink |
| 1-0 | 33 | 1918 | Amsterdam | C26 Vienna |
| 7. Reti vs P van Hoorn |
| 1-0 | 36 | 1919 | Amsterdam | C86 Ruy Lopez, Worrall Attack |
| 8. Euwe vs P van Hoorn |
| 1-0 | 22 | 1920 | Amsterdam | D31 Queen's Gambit Declined |
| 9. P van Hoorn vs M Marchand |
| 1-0 | 23 | 1920 | unknown | A04 Reti Opening |
| 10. G Hogewind vs P van Hoorn |
| 0-1 | 37 | 1920 | VAS-Utrecht | C59 Two Knights |
| 11. B Beffie vs P van Hoorn |
| 1-0 | 35 | 1923 | VAS Winter Competition | A15 English |
| 12. Euwe vs P van Hoorn |
| 1-0 | 44 | 1923 | Amsterdam | D80 Grunfeld |
| 13. F de Villegas vs P van Hoorn |
| ½-½ | 38 | 1924 | Belgium - Netherlands | B20 Sicilian |
| 14. P van Hoorn vs Euwe |
| ½-½ | 48 | 1925 | NED-ch | E64 King's Indian, Fianchetto, Yugoslav System |
| 15. A Speijer vs P van Hoorn |
| 0-1 | 33 | 1925 | VAS-VAS Accent | D11 Queen's Gambit Declined Slav |
| 16. G W Kloosterboer vs P van Hoorn |
| ½-½ | 17 | 1926 | Dutch Championship | C55 Two Knights Defense |
| 17. P van Hoorn vs J Pannekoek |
| ½-½ | 50 | 1926 | Dutch Championship | E60 King's Indian Defense |
| 18. A van Foreest vs P van Hoorn |
| 1-0 | 58 | 1926 | Dutch Championship | B45 Sicilian, Taimanov |
| 19. P van Hoorn vs H Meyer |
| 1-0 | 18 | 1926 | Dutch Championship | E67 King's Indian, Fianchetto |
| 20. G Kroone vs P van Hoorn |
| ½-½ | 43 | 1926 | Dutch Championship | A04 Reti Opening |
| 21. P van Hoorn vs Euwe |
| ½-½ | 41 | 1926 | Dutch Championship | E64 King's Indian, Fianchetto, Yugoslav System |
| 22. P van Hoorn vs Olland |
| 1-0 | 15 | 1926 | Dutch Championship | A32 English, Symmetrical Variation |
| 23. L Fick vs P van Hoorn |
| ½-½ | 39 | 1926 | Dutch Championship | C01 French, Exchange |
| 24. P van Hoorn vs W Schelfhout |
| ½-½ | 21 | 1926 | Dutch Championship | D30 Queen's Gambit Declined |
| 25. J Kersten vs P van Hoorn |
| ½-½ | 73 | 1926 | Dutch Championship | A50 Queen's Pawn Game |
Kibitzing
