| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. M Berchtenbreiter vs J Kotainy |
| 0-1 | 42 | 2007 | GER-ch U14 | C11 French |
| 2. J Kotainy vs G Kern |
| 0-1 | 29 | 2007 | Dortmund op-A | C11 French |
| 3. J Kotainy vs A Gouliaros-Antoniadis |
| 1-0 | 24 | 2008 | EU-ch U14 18th | B22 Sicilian, Alapin |
| 4. M Pecurica vs J Kotainy |
| 0-1 | 43 | 2008 | EU-ch U14 18th | A56 Benoni Defense |
| 5. J Kotainy vs V Kovalev |
 | 0-1 | 28 | 2008 | EU-ch U14 18th | B22 Sicilian, Alapin |
| 6. J Kotainy vs R Thanarotrung |
| 1-0 | 49 | 2008 | Wch U14 | B06 Robatsch |
| 7. D Shen vs J Kotainy |
| ½-½ | 52 | 2008 | Wch U14 | C11 French |
| 8. J Kotainy vs M Harshkou |
| ½-½ | 40 | 2008 | Wch U14 | B01 Scandinavian |
| 9. P Chen vs J Kotainy |
| 1-0 | 32 | 2008 | Wch U14 | C03 French, Tarrasch |
| 10. J Kotainy vs M Azhar |
| 1-0 | 52 | 2008 | Wch U14 | B22 Sicilian, Alapin |
| 11. Hoang Son Dang vs J Kotainy |
| 0-1 | 45 | 2008 | Wch U14 | C03 French, Tarrasch |
| 12. J Kotainy vs N Lortkipanidze |
| 0-1 | 34 | 2008 | Wch U14 | B10 Caro-Kann |
| 13. P Idani vs J Kotainy |
| 0-1 | 67 | 2008 | Wch U14 | B02 Alekhine's Defense |
| 14. J Kotainy vs H N Pham |
| 1-0 | 43 | 2008 | Wch U14 | C13 French |
| 15. J E Garcia vs J Kotainy |
| ½-½ | 20 | 2008 | Wch U14 | A36 English |
| 16. A Stukopin vs J Kotainy |
| 1-0 | 62 | 2008 | Wch U14 | B29 Sicilian, Nimzovich-Rubinstein |
| 17. J Kotainy vs L Cogan |
| 1-0 | 43 | 2009 | Dresden ZMD Open | B22 Sicilian, Alapin |
| 18. B Bauer vs J Kotainy |
| 0-1 | 26 | 2009 | Dresden ZMD Open | A33 English, Symmetrical |
| 19. J Kotainy vs Baklan |
| 0-1 | 36 | 2009 | Dresden ZMD Open | B23 Sicilian, Closed |
| 20. M Rudolf vs J Kotainy |
| 1-0 | 88 | 2009 | Dresden ZMD Open | C01 French, Exchange |
| 21. J Kotainy vs P Mueller |
| 1-0 | 36 | 2009 | Dresden ZMD Open | A15 English |
| 22. F Meissner vs J Kotainy |
| ½-½ | 20 | 2009 | Dresden ZMD Open | B03 Alekhine's Defense |
| 23. J Kotainy vs T Proschmann |
| 1-0 | 37 | 2009 | Dresden ZMD Open | B25 Sicilian, Closed |
| 24. H Moeller vs J Kotainy |
| 1-0 | 35 | 2009 | Dresden ZMD Open | A30 English, Symmetrical |
| 25. R Seger vs J Kotainy |
| ½-½ | 28 | 2009 | Bundesliga 2009/10 | C03 French, Tarrasch |
Kibitzing
