| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. A Petrosian vs V Zilberstein |
| 0-1 | 47 | 1974 | URS-ch qual | A37 English, Symmetrical |
| 27. J Petkevich vs A Petrosian |
| 1-0 | 62 | 1974 | URS-ch qual | E92 King's Indian |
| 28. Sveshnikov vs A Petrosian |
| 1-0 | 31 | 1974 | USSR | C45 Scotch Game |
| 29. A Petrosian vs Vasiukov |
| ½-½ | 30 | 1975 | 13th Soviet Team Championship qual-1 | A39 English, Symmetrical, Main line with d4 |
| 30. A Petrosian vs O Dzyuban |
| 1-0 | 34 | 1975 | 13th Soviet Team Championship Final-C | E83 King's Indian, Samisch |
| 31. G Govashelishvili vs A Petrosian |
| ½-½ | 41 | 1975 | 13th Soviet Team Championship qual-1 | E11 Bogo-Indian Defense |
| 32. Y Usmanov vs A Petrosian |
| 1-0 | 41 | 1975 | 13th Soviet Team Championship Final-C | A07 King's Indian Attack |
| 33. A Petrosian vs G Piesina |
| 1-0 | 71 | 1975 | 13th Soviet Team Championship qual-1 | E80 King's Indian, Samisch Variation |
| 34. D Mamatov vs A Petrosian |
| ½-½ | 16 | 1975 | 13th Soviet Team Championship Final-C | C84 Ruy Lopez, Closed |
| 35. A Petrosian vs H Geldimamedov |
| 1-0 | 25 | 1975 | 13th Soviet Team Championship Final-C | A04 Reti Opening |
| 36. Klovans vs A Petrosian |
| 0-1 | 40 | 1975 | 13th Soviet Team Championship qual-1 | C95 Ruy Lopez, Closed, Breyer |
| 37. Vaganian vs A Petrosian |
| 1-0 | 22 | 1976 | Yerevan | D37 Queen's Gambit Declined |
| 38. Csom vs A Petrosian |
| ½-½ | 34 | 1976 | Yerevan | A15 English |
| 39. Tukmakov vs A Petrosian |
| 1-0 | 31 | 1976 | Yerevan | A14 English |
| 40. A Petrosian vs Savon |
| ½-½ | 18 | 1976 | Yerevan | A15 English |
| 41. A Petrosian vs K Grigorian |
| ½-½ | 41 | 1976 | Yerevan | A30 English, Symmetrical |
| 42. P Poutiainen vs A Petrosian |
| ½-½ | 23 | 1976 | Yerevan | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 43. A Ornstein vs A Petrosian |
| 1-0 | 59 | 1976 | Yerevan | C87 Ruy Lopez |
| 44. A Petrosian vs A Rodriguez |
| 1-0 | 29 | 1976 | Yerevan | A30 English, Symmetrical |
| 45. A Petrosian vs Smejkal |
| ½-½ | 16 | 1976 | Yerevan | A15 English |
| 46. A Petrosian vs E Mnatsakanian |
| 0-1 | 57 | 1976 | Yerevan | A15 English |
| 47. A Petrosian vs Romanishin |
| ½-½ | 16 | 1976 | Yerevan | C84 Ruy Lopez, Closed |
| 48. A Petrosian vs Gulko |
| ½-½ | 40 | 1976 | Yerevan | E62 King's Indian, Fianchetto |
| 49. A Petrosian vs Vasiukov |
 | 1-0 | 101 | 1976 | Yerevan | A15 English |
| 50. G Zaichik vs A Petrosian |
| 1-0 | 42 | 1976 | USSR Young Masters Championship | E32 Nimzo-Indian, Classical |
Kibitzing
