| 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 |
It (open) | C57 Two Knights |
| 3. M Dziuba vs K Jakubowski |
| 0-1 | 26 |
1999 |
POL Ch U20 | D37 Queen's Gambit Declined |
| 4. K Jakubowski vs Grigoriants |
| ½-½ | 20 |
2000 |
European Youth Championships | B54 Sicilian |
| 5. K Jakubowski vs Ni Hua |
| 0-1 | 42 |
2001 |
WYB18 | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 6. M Skrzypnik vs K Jakubowski |
| 0-1 | 53 |
2001 |
TCh-POL | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 7. K Jakubowski vs P Beben |
| 1-0 | 58 |
2001 |
ch-POL Boys U18 | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 8. K Jakubowski vs M Szymanski |
| ½-½ | 34 |
2001 |
ch-POL Boys U18 | C10 French |
| 9. K Jakubowski vs F Barglowski |
 | 1-0 | 31 |
2001 |
TCh-POL | C63 Ruy Lopez, Schliemann Defense |
| 10. Z Izoria vs K Jakubowski |
 | 1-0 | 36 |
2001 |
WYB18 | E00 Queen's Pawn Game |
| 11. K Jakubowski vs R Tomczak |
| 1-0 | 27 |
2001 |
ch-POL Boys U18 | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 12. J Dworakowska vs K Jakubowski |
| 1-0 | 45 |
2001 |
Polish Supercup | B62 Sicilian, Richter-Rauzer |
| 13. K Jakubowski vs J Wojcieszyn |
| 1-0 | 38 |
2001 |
TCh-POL | B77 Sicilian, Dragon, Yugoslav Attack |
| 14. P Kos vs K Jakubowski |
| ½-½ | 59 |
2001 |
ch-POL Boys U18 | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 15. P Lagowski vs K Jakubowski |
| 0-1 | 34 |
2001 |
ch-POL Boys U18 | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 16. K Jakubowski vs S Krainski |
| ½-½ | 68 |
2001 |
TCh-POL | C10 French |
| 17. K Jakubowski vs D Khismatullin |
| 1-0 | 59 |
2001 |
WYB18 | B90 Sicilian, Najdorf |
| 18. B Katkowski vs K Jakubowski |
| 0-1 | 71 |
2001 |
ch-POL Boys U18 | B23 Sicilian, Closed |
| 19. K Jakubowski vs J Dworakowska |
| ½-½ | 49 |
2001 |
Polish Supercup | B90 Sicilian, Najdorf |
| 20. L Weglarz vs K Jakubowski |
| ½-½ | 42 |
2001 |
TCh-POL | D55 Queen's Gambit Declined |
| 21. K Jakubowski vs S Vysochin |
| 0-1 | 29 |
2001 |
open | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 22. K Jakubowski vs A Mista |
| 1-0 | 75 |
2001 |
ch-POL Boys U18 | B07 Pirc |
| 23. Jobava vs K Jakubowski |
| 0-1 | 37 |
2001 |
WYB18 | B92 Sicilian, Najdorf, Opocensky Variation |
| 24. R Jedynak vs K Jakubowski |
| ½-½ | 27 |
2001 |
TCh-POL | E32 Nimzo-Indian, Classical |
| 25. K Jakubowski vs S Zawadzki |
| 0-1 | 88 |
2001 |
ch-POL Boys U18 | E90 King's Indian |