| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. I Iliev vs P Petkov |
| 0-1 | 73 | 1960 | Bulgarian Championship | A16 English |
| 27. P Petkov vs I Chaprazov |
| 0-1 | 71 | 1960 | Bulgarian Championship | C02 French, Advance |
| 28. A Kolarov vs P Petkov |
| 1-0 | 41 | 1960 | Bulgarian Championship | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 29. A Andreev vs P Petkov |
| ½-½ | 39 | 1960 | Bulgarian Championship | E62 King's Indian, Fianchetto |
| 30. P Petkov vs O Neikirch |
| ½-½ | 20 | 1960 | Bulgarian Championship | B56 Sicilian |
| 31. P Petkov vs G Daskalov |
| ½-½ | 12 | 1960 | Bulgarian Championship | A00 Uncommon Opening |
| 32. P Petkov vs N Minev |
 | 1-0 | 32 | 1960 | Bulgarian Championship | B98 Sicilian, Najdorf |
| 33. Bobotsov vs P Petkov |
| 1-0 | 27 | 1960 | Bulgarian Championship | C63 Ruy Lopez, Schliemann Defense |
| 34. P Petkov vs R Filchev |
| ½-½ | 41 | 1961 | Bulgarian Championship | B30 Sicilian |
| 35. P Petkov vs G Tringov |
| ½-½ | 37 | 1961 | BUL-ch+ | B96 Sicilian, Najdorf |
| 36. P Petkov vs J Ajanski |
| ½-½ | 26 | 1961 | Bulgarian Championship | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 37. I Iliev vs P Petkov |
| ½-½ | 28 | 1961 | Bulgarian Championship | C65 Ruy Lopez, Berlin Defense |
| 38. N Minev vs P Petkov |
| ½-½ | 41 | 1961 | Bulgarian Championship | D51 Queen's Gambit Declined |
| 39. Z Milev vs P Petkov |
| 1-0 | 30 | 1961 | Bulgarian Championship | E85 King's Indian, Samisch, Orthodox Variation |
| 40. P Petkov vs A Drumev |
| ½-½ | 59 | 1961 | Bulgarian Championship | B01 Scandinavian |
| 41. O Neikirch vs P Petkov |
| 1-0 | 112 | 1961 | Bulgarian Championship | E97 King's Indian |
| 42. V Prahov vs P Petkov |
| ½-½ | 56 | 1961 | Bulgarian Championship | C45 Scotch Game |
| 43. P Petkov vs T Chipev |
| 0-1 | 67 | 1961 | Bulgarian Championship | C29 Vienna Gambit |
| 44. Z Kadrev vs P Petkov |
| ½-½ | 19 | 1961 | Bulgarian Championship | D34 Queen's Gambit Declined, Tarrasch |
| 45. L Popov vs P Petkov |
| ½-½ | 22 | 1961 | Bulgarian Championship | D32 Queen's Gambit Declined, Tarrasch |
| 46. P Petkov vs K Krastev |
| ½-½ | 42 | 1961 | Bulgarian Championship | E81 King's Indian, Samisch |
| 47. K Piskov vs P Petkov |
| ½-½ | 36 | 1961 | Bulgarian Championship | A52 Budapest Gambit |
| 48. P Petkov vs A Milev |
| ½-½ | 16 | 1961 | Bulgarian Championship | B15 Caro-Kann |
| 49. D Pantaleev vs P Petkov |
| ½-½ | 23 | 1961 | Bulgarian Championship | E80 King's Indian, Samisch Variation |
| 50. P Petkov vs L Spassov |
| 0-1 | 64 | 1961 | Bulgarian Championship | B96 Sicilian, Najdorf |
Kibitzing
