| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Bacrot vs K Jakubowski |
| 1-0 | 43 | 1993 | EU-ch U10 | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 2. M Kochetkov vs K Jakubowski |
| 1-0 | 31 | 1993 | EU-ch U10 | C57 Two Knights |
| 3. K Jakubowski vs Aleksander Slobodjaniuk |
| 1-0 | 30 | 1993 | EU-ch U10 | B21 Sicilian, 2.f4 and 2.d4 |
| 4. K Rusev vs K Jakubowski |
| 0-1 | 41 | 1993 | EU-ch U10 | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 5. V Vamos vs K Jakubowski |
| 0-1 | 39 | 1993 | EU-ch U10 | C63 Ruy Lopez, Schliemann Defense |
| 6. K Jakubowski vs D Mastrovasilis |
| ½-½ | 60 | 1993 | EU-ch U10 | C47 Four Knights |
| 7. Z Szilagyi vs K Jakubowski |
| ½-½ | 50 | 1993 | EU-ch U10 | C45 Scotch Game |
| 8. K Jakubowski vs G Sarkisian |
| 0-1 | 35 | 1993 | EU-ch U10 | C45 Scotch Game |
| 9. K Jakubowski vs B Savic |
| 1-0 | 52 | 1993 | EU-ch U10 | B21 Sicilian, 2.f4 and 2.d4 |
| 10. K Jakubowski vs J Pinski |
| 0-1 | 64 | 1994 | Polish Junior Team Championship | A46 Queen's Pawn Game |
| 11. R Antoniewski vs K Jakubowski |
| 1-0 | 33 | 1994 | Polish Junior Team Championship | B01 Scandinavian |
| 12. K Jakubowski vs R Zych |
| ½-½ | 43 | 1994 | Polish Junior Team Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 13. M Szajda vs K Jakubowski |
| 1-0 | 59 | 1994 | Polish Junior Team Championship | B01 Scandinavian |
| 14. K Jakubowski vs T Kucharski |
| 0-1 | 71 | 1994 | Polish Junior Team Championship | A46 Queen's Pawn Game |
| 15. H Bogenryter vs K Jakubowski |
| 1-0 | 38 | 1994 | Polish Junior Team Championship | D46 Queen's Gambit Declined Semi-Slav |
| 16. K Jakubowski vs A Dudziak |
| 0-1 | 50 | 1994 | Polish Junior Team Championship | C44 King's Pawn Game |
| 17. P Stefanek vs K Jakubowski |
| 1-0 | 45 | 1994 | Polish Junior Team Championship | B31 Sicilian, Rossolimo Variation |
| 18. K Jakubowski vs L Twardowski |
| 0-1 | 44 | 1994 | Polish Junior Team Championship | D04 Queen's Pawn Game |
| 19. R Bialy vs K Jakubowski |
| 1-0 | 66 | 1994 | Polish Junior Team Championship | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 20. K Jakubowski vs J Horvath |
| 1-0 | 37 | 1996 | Gyula op | A10 English |
| 21. K Jakubowski vs Jacek Kujawa |
| ½-½ | 31 | 1996 | Augustow op-A | D55 Queen's Gambit Declined |
| 22. K Jakubowski vs G Krogulski |
| 0-1 | 49 | 1996 | Augustow op-A | E12 Queen's Indian |
| 23. K Jakubowski vs M Morchat |
| ½-½ | 34 | 1996 | Augustow op-A | A31 English, Symmetrical, Benoni Formation |
| 24. K Jakubowski vs P Lasinskas |
| 0-1 | 86 | 1996 | Augustow op-A | D20 Queen's Gambit Accepted |
| 25. K Jakubowski vs R Biolek |
| 0-1 | 50 | 1996 | Moravia-ch op | E61 King's Indian |
Kibitzing
