| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K Alekseenko vs A Giri |
| 0-1 | 37 |
2008 |
27th Blokadny youth | B44 Sicilian |
| 2. K Alekseenko vs V Fedoseev |
| 0-1 | 90 |
2009 |
Chigorin Memorial Open | B74 Sicilian, Dragon, Classical |
| 3. K Alekseenko vs T Laurusas |
| 1-0 | 61 |
2010 |
WYCC Open U14 | B43 Sicilian, Kan, 5.Nc3 |
| 4. K Alekseenko vs Nima Javanbakht |
 | ½-½ | 75 |
2010 |
WYCC Open U14 | B33 Sicilian |
| 5. K Alekseenko vs Ayan Akhmetov |
| 0-1 | 39 |
2010 |
WYCC Open U14 | B84 Sicilian, Scheveningen |
| 6. K Alekseenko vs S Grigorian |
| 1-0 | 36 |
2012 |
23rd Czech Open A | B92 Sicilian, Najdorf, Opocensky Variation |
| 7. K Alekseenko vs L Dominguez |
| ½-½ | 57 |
2012 |
Russian Team Championships | B92 Sicilian, Najdorf, Opocensky Variation |
| 8. K Alekseenko vs A Sarana |
| 1-0 | 54 |
2012 |
Chigorin Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 9. K Alekseenko vs Potkin |
| ½-½ | 41 |
2012 |
13th European Individual Championship | B46 Sicilian, Taimanov Variation |
| 10. K Alekseenko vs V Durarbayli |
| 1-0 | 31 |
2012 |
Chigorin Memorial | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 11. K Alekseenko vs M Rodshtein |
| 0-1 | 70 |
2012 |
13th European Individual Championship | B84 Sicilian, Scheveningen |
| 12. K Alekseenko vs M Al Sayed |
| 1-0 | 52 |
2012 |
Chigorin Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
