| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Efimenko vs G Szabo |
| 1-0 | 35 |
2000 |
t-EuCh U18 | B85 Sicilian, Scheveningen, Classical |
| 2. Efimenko vs D Baramidze |
| 1-0 | 40 |
2001 |
TCh-Europe Boys U18 | B84 Sicilian, Scheveningen |
| 3. Efimenko vs C Deepan |
| 1-0 | 56 |
2001 |
WYB16 | B84 Sicilian, Scheveningen |
| 4. Efimenko vs C Sandipan |
| ½-½ | 40 |
2002 |
Aeroflot Open | B85 Sicilian, Scheveningen, Classical |
| 5. Efimenko vs D Bocharov |
| ½-½ | 21 |
2003 |
4th IECC | B83 Sicilian |
| 6. Efimenko vs O Pedersen |
| 1-0 | 41 |
2003 |
Cappelle La Grande | B83 Sicilian |
| 7. Efimenko vs I Kurnosov |
 | 0-1 | 30 |
2003 |
4th IECC | B84 Sicilian, Scheveningen |
| 8. Efimenko vs Grigoriants |
| ½-½ | 28 |
2003 |
4th IECC | B83 Sicilian |
| 9. Efimenko vs A Galkin |
| 0-1 | 35 |
2004 |
3rd Aeroflot Festival | B83 Sicilian |
| 10. Efimenko vs V Neverov |
| 1-0 | 25 |
2005 |
Ukrainian Championships | B84 Sicilian, Scheveningen |
| 11. Efimenko vs J Dworakowska |
| ½-½ | 31 |
2005 |
2nd Coventry Chess International | B84 Sicilian, Scheveningen |
| 12. Efimenko vs Macieja |
| ½-½ | 99 |
2005 |
FIDE World Cup | B85 Sicilian, Scheveningen, Classical |
| 13. Efimenko vs A Sokolov |
| ½-½ | 53 |
2006 |
European Club Cup | B83 Sicilian |
| 14. Efimenko vs S Cicak |
| ½-½ | 75 |
2006 |
37th Chess Olympiad | B83 Sicilian |
| 15. Efimenko vs D Jakovenko |
| ½-½ | 25 |
2007 |
European Individual Championships | B83 Sicilian |
| 16. Efimenko vs A Zhigalko |
| 1-0 | 54 |
2007 |
European Club Cup | B84 Sicilian, Scheveningen |
| 17. Efimenko vs Van Huy Nguyen |
| 1-0 | 52 |
2008 |
2008 Olympiad | B84 Sicilian, Scheveningen |
| 18. Efimenko vs V Atlas |
| 1-0 | 14 |
2008 |
Euro Club Cup | B80 Sicilian, Scheveningen |
| 19. Efimenko vs A Sokolov |
| 1-0 | 54 |
2008 |
European Individual Championship | B80 Sicilian, Scheveningen |
| 20. Efimenko vs Yifan Hou |
| ½-½ | 55 |
2009 |
Corus (Group B) | B80 Sicilian, Scheveningen |
| 21. Efimenko vs F Caruana |
| 1-0 | 41 |
2009 |
Corus (Group B) | B80 Sicilian, Scheveningen |
