| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Benko vs H Van Riemsdijk |
| 1-0 | 48 |
1978 |
Lone Pine | B08 Pirc, Classical |
| 27. V Small vs H Van Riemsdijk |
| 0-1 | 46 |
1978 |
Buenos Aires (Argentina) | C26 Vienna |
| 28. H Van Riemsdijk vs J Donaldson |
| ½-½ | 60 |
1978 |
Lone Pine | C00 French Defense |
| 29. Najdorf vs H Van Riemsdijk |
| ½-½ | 39 |
1978 |
Sao Paulo | D07 Queen's Gambit Declined, Chigorin Defense |
| 30. Reshevsky vs H Van Riemsdijk |
| 1-0 | 29 |
1978 |
Lone Pine | A32 English, Symmetrical Variation |
| 31. Van der Wiel vs H Van Riemsdijk |
| 0-1 | 49 |
1979 |
Amsterdam IBM II | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 32. H Van Riemsdijk vs R Rodriguez |
| 0-1 | 47 |
1979 |
Riga izt | B06 Robatsch |
| 33. H Van Riemsdijk vs J Rigo |
| 1-0 | 33 |
1979 |
Lone Pine op | B76 Sicilian, Dragon, Yugoslav Attack |
| 34. H Van Riemsdijk vs Polugaevsky |
| ½-½ | 23 |
1979 |
Izt (cat.12) | B43 Sicilian, Kan, 5.Nc3 |
| 35. H Van Riemsdijk vs Y Gruenfeld |
| 1-0 | 40 |
1979 |
Riga izt | B95 Sicilian, Najdorf, 6...e6 |
| 36. Ljubojevic vs H Van Riemsdijk |
| 1-0 | 32 |
1979 |
Riga | B33 Sicilian |
| 37. F Braga vs H Van Riemsdijk |
| 1-0 | 38 |
1979 |
10s, San Pablo [Hiarcs 7.32 | A08 King's Indian Attack |
| 38. F Trois vs H Van Riemsdijk |
| ½-½ | 16 |
1979 |
Riga izt | B19 Caro-Kann, Classical |
| 39. J Whitehead vs H Van Riemsdijk |
| 0-1 | 41 |
1979 |
Lone Pine op | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 40. F Holzl vs H Van Riemsdijk |
| 1-0 | 51 |
1979 |
Amsterdam IBM | C26 Vienna |
| 41. H Van Riemsdijk vs Polugaevsky |
| ½-½ | 23 |
1979 |
Riga izt | B43 Sicilian, Kan, 5.Nc3 |
| 42. Larsen vs H Van Riemsdijk |
| 1-0 | 23 |
1979 |
Riga izt | A00 Uncommon Opening |
| 43. S Bouaziz vs H Van Riemsdijk |
| ½-½ | 12 |
1979 |
Riga izt | B17 Caro-Kann, Steinitz Variation |
| 44. Romanishin vs H Van Riemsdijk |
| 1-0 | 27 |
1979 |
Riga izt | C40 King's Knight Opening |
| 45. H Van Riemsdijk vs J Benjamin |
| 0-1 | 29 |
1979 |
4, Lone Pine op | B16 Caro-Kann, Bronstein-Larsen Variation |
| 46. H Van Riemsdijk vs Hort |
| ½-½ | 30 |
1979 |
Lone Pine op | B06 Robatsch |
| 47. H Van Riemsdijk vs Gheorghiu |
| 0-1 | 61 |
1979 |
Riga izt | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 48. D Root vs H Van Riemsdijk |
| ½-½ | 39 |
1979 |
Lone Pine op | A01 Nimzovich-Larsen Attack |
| 49. Miles vs H Van Riemsdijk |
| 1-0 | 57 |
1979 |
Riga izt | A16 English |
| 50. H Van Riemsdijk vs Adorjan |
| 0-1 | 33 |
1979 |
Riga | B33 Sicilian |