| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. I Duzhakov vs K Alekseenko |
| 1-0 | 97 |
2009 |
Chigorin Memorial Open | D11 Queen's Gambit Declined Slav |
| 2. K Alekseenko vs A Aghaei |
| 1-0 | 64 |
2010 |
WYCC Open U14 | C00 French Defense |
| 3. K Alekseenko vs T Laurusas |
| 1-0 | 61 |
2010 |
WYCC Open U14 | B43 Sicilian, Kan, 5.Nc3 |
| 4. K Izzat vs K Alekseenko |
| 1-0 | 85 |
2010 |
WYCC Open U14 | E00 Queen's Pawn Game |
| 5. S Iskusnyh vs K Alekseenko |
| 1-0 | 36 |
2012 |
Russian Team Championships | A49 King's Indian, Fianchetto without c4 |
| 6. K Alekseenko vs N Belov |
| 1-0 | 33 |
2012 |
Chigorin Memorial | C00 French Defense |
| 7. P Tvarijonas vs K Alekseenko |
| 1-0 | 69 |
2012 |
23rd Czech Open A | C61 Ruy Lopez, Bird's Defense |
| 8. K Alekseenko vs A Sarana |
| 1-0 | 54 |
2012 |
Chigorin Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 9. K Alekseenko vs Stefansson |
| 1-0 | 50 |
2012 |
13th European Individual Championship | C70 Ruy Lopez |
| 10. N Vitiugov vs K Alekseenko |
| 1-0 | 53 |
2012 |
Chigorin Memorial | D20 Queen's Gambit Accepted |
| 11. M Petr vs K Alekseenko |
| 1-0 | 28 |
2012 |
23rd Czech Open A | A49 King's Indian, Fianchetto without c4 |
| 12. Grigoriants vs K Alekseenko |
| 1-0 | 54 |
2012 |
Chigorin Memorial | D02 Queen's Pawn Game |
| 13. V Nevednichy vs K Alekseenko |
 | 1-0 | 82 |
2012 |
13th European Individual Championship | B31 Sicilian, Rossolimo Variation |
| 14. K Alekseenko vs J Adamek |
| 1-0 | 43 |
2012 |
23rd Czech Open A | C03 French, Tarrasch |
| 15. K Alekseenko vs S Grigorian |
| 1-0 | 36 |
2012 |
23rd Czech Open A | B92 Sicilian, Najdorf, Opocensky Variation |
| 16. K Alekseenko vs V Durarbayli |
| 1-0 | 31 |
2012 |
Chigorin Memorial | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 17. M Tokmachev vs K Alekseenko |
| 1-0 | 43 |
2012 |
23rd Czech Open A | D32 Queen's Gambit Declined, Tarrasch |
| 18. K Alekseenko vs A Mukashev |
| 1-0 | 70 |
2012 |
23rd Czech Open A | C00 French Defense |
| 19. K Alekseenko vs M Al Sayed |
| 1-0 | 52 |
2012 |
Chigorin Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 20. K Alekseenko vs E Prandstetter |
| 1-0 | 37 |
2012 |
23rd Czech Open A | C18 French, Winawer |
