| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. I Nei vs Petrosian |
 | 0-1 | 28 |
1946 |
URS-ch U18 | E95 King's Indian, Orthodox, 7...Nbd7, 8.Re1 |
| 27. Petrosian vs Kasparian |
| 1-0 | 42 |
1946 |
Erevan | A53 Old Indian |
| 28. K Kalantar vs Petrosian |
| 0-1 | 31 |
1946 |
Leningrad | A48 King's Indian |
| 29. Petrosian vs Krogius |
| 1-0 | 36 |
1946 |
Leningrad | A16 English |
| 30. Petrosian vs Korchnoi |
| 1-0 | 23 |
1946 |
Leningrad | A90 Dutch |
| 31. Yashin vs Petrosian |
| 0-1 | 46 |
1946 |
URS-ch U18 | C46 Three Knights |
| 32. Kasparian vs Petrosian |
| 0-1 | 54 |
1946 |
ARM-ch m | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 33. Kasparian vs Petrosian |
| 0-1 | 38 |
1946 |
ARM-ch | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 34. Petrosian vs A Arutiunov |
| 1-0 | 41 |
1946 |
Tbilisi (Georgia) | D51 Queen's Gambit Declined |
| 35. Petrosian vs Keres |
| ½-½ | 42 |
1946 |
Tbilisi | D80 Grunfeld |
| 36. Kasparian vs Petrosian |
| ½-½ | 47 |
1946 |
ARM-ch m | A03 Bird's Opening |
| 37. Snilga vs Petrosian |
| 0-1 | 46 |
1946 |
Leningrad (Russia) | B13 Caro-Kann, Exchange |
| 38. Petrosian vs Petrovsky |
| 1-0 | 28 |
1946 |
Leningrad (Russia) | E11 Bogo-Indian Defense |
| 39. Petrosian vs Y Kotkov |
 | 1-0 | 20 |
1946 |
Leningrad (Russia) | E10 Queen's Pawn Game |
| 40. Petrosian vs Kasparian |
| 1-0 | 52 |
1946 |
Erevan (Armenia) | E69 King's Indian, Fianchetto, Classical Main line |
| 41. Petrosian vs Averbakh |
| 0-1 | 40 |
1947 |
Ch URS ( 1/2 ) | C89 Ruy Lopez, Marshall |
| 42. Petrosian vs Kholmov |
| 0-1 | 72 |
1947 |
URS-ch sf | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 43. Kan vs Petrosian |
| 1-0 | 42 |
1947 |
Ch URS (1/2 final) | D45 Queen's Gambit Declined Semi-Slav |
| 44. Podolny vs Petrosian |
| ½-½ | 49 |
1947 |
URS-ch sf | A46 Queen's Pawn Game |
| 45. Petrosian vs Simagin |
| ½-½ | 24 |
1947 |
Moscow | A96 Dutch, Classical Variation |
| 46. Petrosian vs Gongadze |
| 1-0 | 30 |
1947 |
Tbilisi (Georgia) | A46 Queen's Pawn Game |
| 47. Petrosian vs Konstantinopolsky |
| ½-½ | 41 |
1947 |
URS-ch sf | D02 Queen's Pawn Game |
| 48. Petrosian vs A Buslaev |
| 1-0 | 46 |
1947 |
Tbilisi (Georgia) | D35 Queen's Gambit Declined |
| 49. Petrosian vs Bondarevsky |
| ½-½ | 26 |
1947 |
Armenia | D02 Queen's Pawn Game |
| 50. Petrosian vs Veresov |
| 1-0 | 38 |
1947 |
1/2Final | E34 Nimzo-Indian, Classical, Noa Variation |
