Game |
| Result | Moves |
Year | Event/Locale | Opening |
26. Y Gruenfeld vs V Chekhov |
 | 0-1 | 82 | 1976 | World Student Team Championship Final-A | B45 Sicilian, Taimanov |
27. J L Vilela vs Y Gruenfeld |
| ½-½ | 40 | 1976 | World Student Team Championship Final-A | D34 Queen's Gambit Declined, Tarrasch |
28. Y Gruenfeld vs A Malachi |
| 1-0 | 38 | 1977 | Netanya IM-B | E97 King's Indian |
29. Y Gruenfeld vs J Peters |
| 0-1 | 39 | 1978 | 2nd Lloyds Bank Masters Open | B01 Scandinavian |
30. Y Gruenfeld vs M Basman |
  | 0-1 | 34 | 1978 | 2nd Lloyds Bank Masters Open | A00 Uncommon Opening |
31. K J Wicker vs Y Gruenfeld |
| 1-0 | 46 | 1978 | 2nd Lloyds Bank Masters Open | A45 Queen's Pawn Game |
32. J C Henshaw vs Y Gruenfeld |
| 0-1 | 93 | 1978 | 2nd Lloyds Bank Masters Open | B22 Sicilian, Alapin |
33. Y Gruenfeld vs G H James |
| ½-½ | 47 | 1978 | 2nd Lloyds Bank Masters Open | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
34. Y Gruenfeld vs J Lind |
| 0-1 | 26 | 1978 | 2nd Lloyds Bank Masters Open | B77 Sicilian, Dragon, Yugoslav Attack |
35. K Langeweg vs Y Gruenfeld |
| 0-1 | 40 | 1978 | European Team Championship Qual Group 3 | A14 English |
36. Y Gruenfeld vs K Janetschek |
| 1-0 | 40 | 1978 | European Team Championship Qual Group 3 | C80 Ruy Lopez, Open |
37. Y Gruenfeld vs K Langeweg |
| ½-½ | 18 | 1978 | European Team Championship Qual Group 3 | B46 Sicilian, Taimanov Variation |
38. J Ager vs Y Gruenfeld |
| 0-1 | 108 | 1978 | European Team Championship Qual Group 3 | A33 English, Symmetrical |
39. Y Gruenfeld vs J Martin |
| 1-0 | 34 | 1978 | Buenos Aires Olympiad | B42 Sicilian, Kan |
40. Y Gruenfeld vs F Sanz Alonso |
| 1-0 | 39 | 1978 | Buenos Aires Olympiad | C60 Ruy Lopez |
41. C Coudari vs Y Gruenfeld |
| ½-½ | 33 | 1978 | Buenos Aires Olympiad | A16 English |
42. Y Gruenfeld vs J Letzelter |
| ½-½ | 51 | 1978 | Buenos Aires Olympiad | B03 Alekhine's Defense |
43. K E Kivipelto vs Y Gruenfeld |
| ½-½ | 50 | 1978 | Buenos Aires Olympiad | A05 Reti Opening |
44. Y Gruenfeld vs Romanishin |
| ½-½ | 73 | 1978 | Buenos Aires Olympiad | C95 Ruy Lopez, Closed, Breyer |
45. J Tarjan vs Y Gruenfeld |
| ½-½ | 51 | 1978 | Buenos Aires Olympiad | A77 Benoni, Classical, 9...Re8, 10.Nd2 |
46. Y Gruenfeld vs Csom |
| ½-½ | 35 | 1978 | Buenos Aires Olympiad | B62 Sicilian, Richter-Rauzer |
47. O Borik vs Y Gruenfeld |
| ½-½ | 13 | 1978 | Buenos Aires Olympiad | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
48. Y Gruenfeld vs K Helmers |
| 1-0 | 36 | 1979 | European Zone 2 Tt | B97 Sicilian, Najdorf |
49. Browne vs Y Gruenfeld |
| ½-½ | 53 | 1979 | Lone Pine | E17 Queen's Indian |
50. Y Gruenfeld vs A Lein |
| ½-½ | 59 | 1979 | Lone Pine | C05 French, Tarrasch |