| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. T Kraus vs O Wieczorek |
| 0-1 | 24 |
2008 |
EU-ch U14 18th | A48 King's Indian |
| 2. O Wieczorek vs K Piorun |
| 0-1 | 42 |
2008 |
24th Voivoda Cup | B32 Sicilian |
| 3. K Urban vs O Wieczorek |
| 1-0 | 39 |
2008 |
24th Voivoda Cup | E62 King's Indian, Fianchetto |
| 4. A Pintor Munoz vs O Wieczorek |
| ½-½ | 25 |
2008 |
EU-ch U14 18th | A58 Benko Gambit |
| 5. A Sulypa vs O Wieczorek |
| 1-0 | 41 |
2008 |
24th Voivoda Cup | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 6. O Wieczorek vs M Olszewski |
 | 0-1 | 57 |
2008 |
24th Voivoda Cup | B56 Sicilian |
| 7. O Wieczorek vs K Grigoryan |
| 0-1 | 55 |
2008 |
EU-ch U14 18th | B01 Scandinavian |
| 8. O Wieczorek vs V Talla |
| ½-½ | 45 |
2008 |
24th Voivoda Cup | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 9. A Dobrowolski vs O Wieczorek |
| ½-½ | 51 |
2008 |
24th Voivoda Cup | B62 Sicilian, Richter-Rauzer |
| 10. N Bulatovic vs O Wieczorek |
| 0-1 | 70 |
2008 |
EU-ch U14 18th | B83 Sicilian |
| 11. D Arutinian vs O Wieczorek |
| 1-0 | 40 |
2008 |
24th Voivoda Cup | A57 Benko Gambit |
| 12. S De Filomeno vs O Wieczorek |
| ½-½ | 36 |
2008 |
EU-ch U14 18th | B07 Pirc |
| 13. M Grabarczyk vs O Wieczorek |
| ½-½ | 72 |
2008 |
24th Voivoda Cup | E06 Catalan, Closed, 5.Nf3 |
| 14. O Wieczorek vs M Ostovic |
| 1-0 | 27 |
2008 |
EU-ch U14 18th | B27 Sicilian |
| 15. O Wieczorek vs V Sergeev |
| ½-½ | 25 |
2008 |
24th Voivoda Cup | C41 Philidor Defense |
| 16. O Wieczorek vs E Valeanu |
| 0-1 | 54 |
2009 |
10th European Individual Championship | B32 Sicilian |
| 17. F Bruno vs O Wieczorek |
| 0-1 | 56 |
2009 |
10th European Individual Championship | A16 English |
| 18. O Wieczorek vs P Kruljac |
| ½-½ | 18 |
2009 |
10th European Individual Championship | C19 French, Winawer, Advance |
| 19. V Jakovljevic vs O Wieczorek |
| ½-½ | 42 |
2009 |
10th European Individual Championship | D78 Neo-Grunfeld, 6.O-O c6 |
| 20. O Wieczorek vs A Iljushin |
| 0-1 | 31 |
2009 |
10th European Individual Championship | B60 Sicilian, Richter-Rauzer |
| 21. N Nestorovic vs O Wieczorek |
| 1-0 | 46 |
2009 |
10th European Individual Championship | C42 Petrov Defense |
| 22. O Wieczorek vs M Kandic |
| 1-0 | 43 |
2009 |
10th European Individual Championship | C19 French, Winawer, Advance |
| 23. M Grabarczyk vs O Wieczorek |
| ½-½ | 72 |
2009 |
24th Voivoda Cup | E06 Catalan, Closed, 5.Nf3 |
| 24. O Wieczorek vs A Chibukhchian |
| ½-½ | 42 |
2009 |
10th European Individual Championship | B43 Sicilian, Kan, 5.Nc3 |
| 25. M Klenburg vs O Wieczorek |
| 1-0 | 48 |
2009 |
10th European Individual Championship | A07 King's Indian Attack |