| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. H Ree vs Keene |
| ½-½ | 37 |
1966 |
Olympiad | A76 Benoni, Classical, 9...Re8 |
| 27. Larsen vs H Ree |
| 0-1 | 32 |
1967 |
Hoogovens | E32 Nimzo-Indian, Classical |
| 28. K Darga vs H Ree |
| 1-0 | 26 |
1967 |
Hoogovens | E82 King's Indian, Samisch, double Fianchetto Variation |
| 29. Spassky vs H Ree |
 | 1-0 | 46 |
1967 |
Beverwijk | C96 Ruy Lopez, Closed |
| 30. F Kuijpers vs H Ree |
| ½-½ | 28 |
1967 |
NED-ch | B35 Sicilian, Accelerated Fianchetto, Modern Variation with Bc4 |
| 31. Gligoric vs H Ree |
| 0-1 | 38 |
1967 |
Hoogovens | E52 Nimzo-Indian, 4.e3, Main line with ...b6 |
| 32. C Zuidema vs H Ree |
 | 1-0 | 11 |
1967 |
Holland | B57 Sicilian |
| 33. H Ree vs F Kuijpers |
| 0-1 | 42 |
1967 |
Hoogovens | B85 Sicilian, Scheveningen, Classical |
| 34. H Ree vs H Bouwmeester |
| 1-0 | 25 |
1967 |
Hilversum (Netherlands) | C51 Evans Gambit |
| 35. H Ree vs Lutikov |
| ½-½ | 57 |
1967 |
Hoogovens | A50 Queen's Pawn Game |
| 36. Szabo vs H Ree |
| 1-0 | 20 |
1967 |
Beverwijk | E28 Nimzo-Indian, Samisch Variation |
| 37. H Ree vs M F Littleton |
| 1-0 | 24 |
1968 |
Lugano Olympiad | A16 English |
| 38. Timman vs H Ree |
 | ½-½ | 38 |
1968 |
Rotterdam m | A36 English |
| 39. H Ree vs Suttles |
 | 0-1 | 24 |
1968 |
Lugano | B09 Pirc, Austrian Attack |
| 40. H Ree vs N Padevsky |
| 0-1 | 56 |
1968 |
Wijk aan Zee I | A13 English |
| 41. H Ree vs Yanofsky |
| ½-½ | 42 |
1968 |
Netanya | A15 English |
| 42. H Ree vs D D Van Geet |
| 1-0 | 37 |
1968 |
Wijk aan Zee I | B00 Uncommon King's Pawn Opening |
| 43. H Ree vs Y Bernstein |
| ½-½ | 46 |
1968 |
Netanya | A00 Uncommon Opening |
| 44. H Ree vs Timman |
| 1-0 | 34 |
1968 |
Rotterdam m | A13 English |
| 45. Ivkov vs H Ree |
| 0-1 | 45 |
1968 |
Amsterdam | A22 English |
| 46. H Ree vs K Langeweg |
| 1-0 | 33 |
1968 |
Wijk aan Zee I | A19 English, Mikenas-Carls, Sicilian Variation |
| 47. H Ree vs Hort |
| ½-½ | 14 |
1968 |
Wijk aan Zee | B56 Sicilian |
| 48. H Ree vs M Czerniak |
| 0-1 | 82 |
1968 |
Netanya | A13 English |
| 49. Bobotsov vs H Ree |
| ½-½ | 22 |
1968 |
Hoogovens | D43 Queen's Gambit Declined Semi-Slav |
| 50. Szabo vs H Ree |
| ½-½ | 27 |
1968 |
Lugano | A04 Reti Opening |