| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. B Pietrusiak vs Lengyel |
| ½-½ | 29 | 1966 | Rubinstein mem 04th | B28 Sicilian, O'Kelly Variation |
| 27. A Tarnowski vs B Pietrusiak |
| ½-½ | 54 | 1966 | Polish Championship | B56 Sicilian |
| 28. B Pietrusiak vs J Lewi |
| 1-0 | 34 | 1966 | Polish Championship | E60 King's Indian Defense |
| 29. J Lachut vs B Pietrusiak |
| ½-½ | 41 | 1966 | Polish Championship | B56 Sicilian |
| 30. B Pietrusiak vs R Grabczewski |
| ½-½ | 15 | 1966 | Polish Championship | C44 King's Pawn Game |
| 31. J Adamski vs B Pietrusiak |
| ½-½ | 22 | 1966 | Polish Championship | B56 Sicilian |
| 32. B Pietrusiak vs Brzozka |
| ½-½ | 31 | 1966 | Polish Championship | B44 Sicilian |
| 33. A Sydor vs B Pietrusiak |
| 0-1 | 40 | 1966 | Polish Championship | B27 Sicilian |
| 34. B Pietrusiak vs W Balcerowski |
| ½-½ | 36 | 1966 | Polish Championship | B06 Robatsch |
| 35. M Ziembinski vs B Pietrusiak |
| ½-½ | 28 | 1966 | Polish Championship | E94 King's Indian, Orthodox |
| 36. B Pietrusiak vs J Gromek |
| 1-0 | 31 | 1966 | Polish Championship | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 37. T Zoltek vs B Pietrusiak |
| ½-½ | 41 | 1966 | Polish Championship | A57 Benko Gambit |
| 38. B Pietrusiak vs S Witkowski |
| ½-½ | 25 | 1966 | Polish Championship | C44 King's Pawn Game |
| 39. A Filipowicz vs B Pietrusiak |
| ½-½ | 17 | 1966 | Polish Championship | B36 Sicilian, Accelerated Fianchetto |
| 40. B Pietrusiak vs J Kostro |
| ½-½ | 18 | 1966 | Polish Championship | B40 Sicilian |
| 41. W Schmidt vs B Pietrusiak |
 | 0-1 | 26 | 1966 | Polish Championship | A36 English |
| 42. B Pietrusiak vs M Ujtelky |
| 0-1 | 59 | 1966 | Rubinstein Memorial 4th | B06 Robatsch |
| 43. Smyslov vs B Pietrusiak |
| 1-0 | 25 | 1966 | Rubinstein Memorial 4th | E60 King's Indian Defense |
| 44. B Pietrusiak vs Sliwa |
| 0-1 | 39 | 1966 | Rubinstein Memorial 4th | C12 French, McCutcheon |
| 45. G Kluger vs B Pietrusiak |
| 1-0 | 29 | 1966 | Rubinstein Memorial 4th | B61 Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2 |
| 46. J Adamski vs B Pietrusiak |
| 1-0 | 39 | 1967 | POL-ch 24th | E82 King's Indian, Samisch, double Fianchetto Variation |
| 47. B Pietrusiak vs C Jedrzejek |
| ½-½ | 16 | 1967 | POL-chT 20th | B31 Sicilian, Rossolimo Variation |
| 48. Sliwa vs B Pietrusiak |
| 1-0 | 37 | 1967 | POL-ch 24th | A10 English |
| 49. B Pietrusiak vs W Schmidt |
| 0-1 | 52 | 1967 | POL-ch 24th | B44 Sicilian |
| 50. B Pietrusiak vs J Kristinsson |
| 0-1 | 81 | 1967 | Halle Zonal | C44 King's Pawn Game |
Kibitzing
