Game |
| Result | Moves |
Year | Event/Locale | Opening |
26. L Joyner vs M Schulman |
 | ½-½ | 82 | 1965 | CAN-ch | E31 Nimzo-Indian, Leningrad, Main line |
27. Szabo vs J H Donner |
| ½-½ | 21 | 1965 | Amsterdam IBM | E31 Nimzo-Indian, Leningrad, Main line |
28. Philipp Struner vs F Kuijpers |
| 0-1 | 42 | 1966 | Clare Benedict Cup 13th | E31 Nimzo-Indian, Leningrad, Main line |
29. M J Freeman vs J Mollekens |
| 1-0 | 33 | 1966 | Havana Olympiad Final-B | E31 Nimzo-Indian, Leningrad, Main line |
30. A Lukin vs Karpov |
 | 0-1 | 58 | 1967 | 03, Moscow | E31 Nimzo-Indian, Leningrad, Main line |
31. Bagirov vs S Zinser |
 | 1-0 | 40 | 1968 | Moscow | E31 Nimzo-Indian, Leningrad, Main line |
32. H Lehmann vs S Tatai |
 | 0-1 | 49 | 1968 | Solingen | E31 Nimzo-Indian, Leningrad, Main line |
33. Cherepkov vs Taimanov |
| ½-½ | 26 | 1969 | Leningrad ch-SU sf | E31 Nimzo-Indian, Leningrad, Main line |
34. Krogius vs Bobotsov |
| 1-0 | 28 | 1969 | Varna | E31 Nimzo-Indian, Leningrad, Main line |
35. R Toran Albero vs H Liebert |
| 1-0 | 36 | 1970 | Siegen Olympiad Final-A | E31 Nimzo-Indian, Leningrad, Main line |
36. J A Rubinetti vs Polugaevsky |
| 0-1 | 38 | 1971 | Mar del Plata | E31 Nimzo-Indian, Leningrad, Main line |
37. G Mititelu vs Antoshin |
| ½-½ | 43 | 1971 | CSR-ch International | E31 Nimzo-Indian, Leningrad, Main line |
38. J Flesch vs Plachetka |
| ½-½ | 41 | 1971 | Novy Smokovec | E31 Nimzo-Indian, Leningrad, Main line |
39. N Stull vs J Sloth |
| 0-1 | 26 | 1972 | Skopje Olympiad qual-1 | E31 Nimzo-Indian, Leningrad, Main line |
40. S Johannessen vs K Janetschek |
| 1-0 | 52 | 1972 | Skopje Olympiad Final-B | E31 Nimzo-Indian, Leningrad, Main line |
41. Kunsztowicz vs Keres |
| ½-½ | 47 | 1973 | FRG-ch International | E31 Nimzo-Indian, Leningrad, Main line |
42. A H Williams vs Karpov |
  | 0-1 | 30 | 1974 | Nice Olympiad qual-1 | E31 Nimzo-Indian, Leningrad, Main line |
43. J Cooper vs Parma |
| 0-1 | 34 | 1974 | Nice Olympiad Final-A | E31 Nimzo-Indian, Leningrad, Main line |
44. Timman vs Razuvaev |
 | 1-0 | 51 | 1975 | Amsterdam IBM | E31 Nimzo-Indian, Leningrad, Main line |
45. H Bohm vs Szabo |
| ½-½ | 19 | 1975 | Amsterdam IBM | E31 Nimzo-Indian, Leningrad, Main line |
46. Timman vs C W Pritchett |
| 1-0 | 53 | 1975 | London | E31 Nimzo-Indian, Leningrad, Main line |
47. Timman vs Hort |
| ½-½ | 22 | 1975 | Teesside | E31 Nimzo-Indian, Leningrad, Main line |
48. Timman vs G Garcia Gonzalez |
| ½-½ | 54 | 1976 | Orense | E31 Nimzo-Indian, Leningrad, Main line |
49. Miles vs Iskov |
| 1-0 | 30 | 1976 | Dortmund | E31 Nimzo-Indian, Leningrad, Main line |
50. H Ree vs F Olafsson |
| ½-½ | 41 | 1976 | Amsterdam IBM | E31 Nimzo-Indian, Leningrad, Main line |