| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Efimenko vs V Poletaev |
| 1-0 | 41 |
1999 |
UKR-ch U18 | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 2. Efimenko vs S Steindorsson |
| ½-½ | 55 |
2000 |
t-EuCh U18 | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 3. Efimenko vs Nakamura |
 | 1-0 | 40 |
2000 |
KasparovChess Cadet GP net | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 4. Efimenko vs N Vink |
| ½-½ | 60 |
2001 |
Stork YM | B92 Sicilian, Najdorf, Opocensky Variation |
| 5. Efimenko vs Sedlak |
| 1-0 | 78 |
2001 |
TCh-Europe Boys U18 | B92 Sicilian, Najdorf, Opocensky Variation |
| 6. Efimenko vs Acs |
| 0-1 | 45 |
2001 |
2nd IECC | B92 Sicilian, Najdorf, Opocensky Variation |
| 7. Efimenko vs Shirov |
| ½-½ | 35 |
2002 |
European Club Cup | B92 Sicilian, Najdorf, Opocensky Variation |
| 8. Efimenko vs G Van der Stricht |
| 1-0 | 32 |
2002 |
European Club Cup | B92 Sicilian, Najdorf, Opocensky Variation |
| 9. Efimenko vs E Paehtz |
| ½-½ | 29 |
2003 |
European Clubs Cup (Men) | B92 Sicilian, Najdorf, Opocensky Variation |
| 10. Efimenko vs Sutovsky |
| ½-½ | 36 |
2003 |
Aeroflot Open | B92 Sicilian, Najdorf, Opocensky Variation |
| 11. Efimenko vs A Volokitin |
| ½-½ | 56 |
2004 |
73rd Ukrainian Championship | B96 Sicilian, Najdorf |
| 12. Efimenko vs Sadvakasov |
| ½-½ | 39 |
2004 |
3rd Aeroflot Festival | B92 Sicilian, Najdorf, Opocensky Variation |
| 13. Efimenko vs Sakaev |
 | ½-½ | 32 |
2005 |
Aeroflot Open | B92 Sicilian, Najdorf, Opocensky Variation |
| 14. Efimenko vs Sadvakasov |
| 1-0 | 34 |
2005 |
Russian Team Championship | B90 Sicilian, Najdorf |
| 15. Efimenko vs J Dworakowska |
| 1-0 | 28 |
2005 |
Gibraltar Masters | B90 Sicilian, Najdorf |
| 16. Efimenko vs V Nedilko |
 | 1-0 | 35 |
2005 |
Ukrainian Championships | B90 Sicilian, Najdorf |
| 17. Efimenko vs D Baramidze |
| 1-0 | 29 |
2005 |
6th European Individual Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 18. Efimenko vs F Berkes |
| ½-½ | 31 |
2006 |
4th Marx Gyorgy Memorial | B92 Sicilian, Najdorf, Opocensky Variation |
| 19. Efimenko vs Gelfand |
| ½-½ | 23 |
2006 |
European Club Cup | B92 Sicilian, Najdorf, Opocensky Variation |
| 20. Efimenko vs Svidler |
| ½-½ | 20 |
2008 |
Russian Team Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 21. Efimenko vs V Gashimov |
 | 0-1 | 47 |
2008 |
Russian Team Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 22. Efimenko vs E Najer |
| 0-1 | 60 |
2008 |
2008-2009 Bundesliga | B90 Sicilian, Najdorf |
| 23. Efimenko vs E Alekseev |
| ½-½ | 44 |
2008 |
Russian Team Championship | B92 Sicilian, Najdorf, Opocensky Variation |
| 24. Efimenko vs M Agopov |
| 1-0 | 46 |
2008 |
Euro Club Cup | B90 Sicilian, Najdorf |
| 25. Efimenko vs Bu Xiangzhi |
 | 1-0 | 47 |
2008 |
Gibraltar | B92 Sicilian, Najdorf, Opocensky Variation |