| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Markiewicz vs R Grzelak |
| 1-0 | 34 | 1979 | Polish Championship | A28 English |
| 2. D Weider vs J Markiewicz |
| 0-1 | 36 | 1979 | Polish Championship | C23 Bishop's Opening |
| 3. A Trylski vs J Markiewicz |
| 0-1 | 37 | 1979 | Polish Championship | C77 Ruy Lopez |
| 4. M Fijalkowski vs J Markiewicz |
| 1-0 | 34 | 1979 | Polish Championship | A34 English, Symmetrical |
| 5. J Markiewicz vs W Szajna |
| 1-0 | 26 | 1979 | Polish Championship | A57 Benko Gambit |
| 6. A Luczak vs J Markiewicz |
| 1-0 | 29 | 1979 | Polish Championship | C80 Ruy Lopez, Open |
| 7. J Markiewicz vs T Lipski |
| 1-0 | 38 | 1979 | Polish Championship | A16 English |
| 8. Glek vs J Markiewicz |
| 1-0 | 21 | 1985 | Cedok | D03 Torre Attack (Tartakower Variation) |
| 9. A Wojtkiewicz vs J Markiewicz |
| ½-½ | 7 | 1999 | POL-chT2 | A37 English, Symmetrical |
| 10. J Markiewicz vs Kupreichik |
| 0-1 | 30 | 2001 | Presov | E97 King's Indian |
| 11. J Markiewicz vs M Manik |
| 0-1 | 42 | 2001 | Presov | A58 Benko Gambit |
| 12. J Markiewicz vs M Rudolf |
| 1-0 | 67 | 2001 | Presov | A10 English |
| 13. V Priehoda vs J Markiewicz |
| 1-0 | 20 | 2001 | Presov | E76 King's Indian, Four Pawns Attack |
| 14. J Markiewicz vs V Tverdohlebov |
| 0-1 | 30 | 2003 | Krakow Open-A 2003/04 | B57 Sicilian |
| 15. T Sammalvuo vs J Markiewicz |
| ½-½ | 37 | 2017 | European Rapid Championship | E94 King's Indian, Orthodox |
| 16. J Markiewicz vs M Pena Gomez |
| 1-0 | 88 | 2017 | European Rapid Championship | B44 Sicilian |
| 17. D Dvirnyy vs J Markiewicz |
| 1-0 | 34 | 2017 | European Rapid Championship | E63 King's Indian, Fianchetto, Panno Variation |
| 18. J Markiewicz vs Z Abdumalik |
| 0-1 | 21 | 2019 | Najdorf Memorial Open-A | B43 Sicilian, Kan, 5.Nc3 |
| 19. J Golecki vs J Markiewicz |
| ½-½ | 20 | 2019 | Najdorf Memorial Open-A | B31 Sicilian, Rossolimo Variation |
| 20. J Markiewicz vs R Krasiewicz |
| 0-1 | 21 | 2019 | Najdorf Memorial Open-A | C04 French, Tarrasch, Guimard Main line |
| 21. S Liberadzki vs J Markiewicz |
| ½-½ | 50 | 2019 | Najdorf Memorial Open-A | A10 English |
| 22. J Markiewicz vs K Dwilewicz |
| 1-0 | 54 | 2019 | Najdorf Memorial Open-A | C91 Ruy Lopez, Closed |
| 23. Michal Mirski vs J Markiewicz |
| 0-1 | 61 | 2019 | Najdorf Memorial Open-A | B06 Robatsch |
| 24. J Markiewicz vs P Miroshnichenko |
| ½-½ | 57 | 2019 | Najdorf Memorial Open-A | C91 Ruy Lopez, Closed |
| 25. J Siekanski vs J Markiewicz |
| ½-½ | 24 | 2019 | Najdorf Memorial Open-A | A85 Dutch, with c4 & Nc3 |
Kibitzing
