| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Sedlak vs Efimenko |
| 0-1 | 49 |
2000 |
t-EuCh U18 | B32 Sicilian |
| 2. E Pinter vs Efimenko |
 | 1-0 | 71 |
2000 |
t-EuCh U18 | B23 Sicilian, Closed |
| 3. O Chaika vs Efimenko |
| ½-½ | 33 |
2000 |
Ukrainian Team ch | B24 Sicilian, Closed |
| 4. A Zhigalko vs Efimenko |
| 0-1 | 40 |
2001 |
Stork YM | B93 Sicilian, Najdorf, 6.f4 |
| 5. B Heberla vs Efimenko |
| 1-0 | 34 |
2001 |
WYB16 | B23 Sicilian, Closed |
| 6. L Cernousek vs Efimenko |
| 0-1 | 42 |
2001 |
TCh-Europe Boys U18 | B92 Sicilian, Najdorf, Opocensky Variation |
| 7. J C Ibarra Jerez vs Efimenko |
| 0-1 | 29 |
2001 |
WYB16 | B31 Sicilian, Rossolimo Variation |
| 8. J Borisek vs Efimenko |
| 0-1 | 27 |
2001 |
TCh-Europe Boys U18 | B90 Sicilian, Najdorf |
| 9. Kupreichik vs Efimenko |
| ½-½ | 25 |
2001 |
2nd Governor's Cup | B25 Sicilian, Closed |
| 10. M D Tseitlin vs Efimenko |
| 0-1 | 34 |
2001 |
ECC | B90 Sicilian, Najdorf |
| 11. Ilia Fofanov vs Efimenko |
| 0-1 | 28 |
2001 |
Memorial E Geller op | B22 Sicilian, Alapin |
| 12. T Luther vs Efimenko |
| 1-0 | 33 |
2001 |
2nd IECC | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 13. Miroshnichenko vs Efimenko |
| ½-½ | 17 |
2001 |
2nd Governor's Cup | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 14. M Brodsky vs Efimenko |
| ½-½ | 23 |
2001 |
ch-UKR | B92 Sicilian, Najdorf, Opocensky Variation |
| 15. Spiridonov vs Efimenko |
| 0-1 | 31 |
2001 |
UKR-ch U16 | B22 Sicilian, Alapin |
| 16. N Mamedov vs Efimenko |
| 1-0 | 32 |
2001 |
WYB16 | B90 Sicilian, Najdorf |
| 17. E Berg vs Efimenko |
| ½-½ | 33 |
2002 |
Pyramiden Franken Cup 5th | B90 Sicilian, Najdorf |
| 18. V Atlas vs Efimenko |
| ½-½ | 31 |
2002 |
European Club Cup | B90 Sicilian, Najdorf |
| 19. M Zulfugarli vs Efimenko |
| 0-1 | 30 |
2002 |
Aeroflot Open | B90 Sicilian, Najdorf |
| 20. D Mastrovasilis vs Efimenko |
| 1-0 | 41 |
2003 |
4th IECC | B90 Sicilian, Najdorf |
| 21. Morozevich vs Efimenko |
| 1-0 | 43 |
2003 |
European Clubs Cup (Men) | B20 Sicilian |
| 22. M Zufic vs Efimenko |
| ½-½ | 42 |
2003 |
Cappelle La Grande | B91 Sicilian, Najdorf, Zagreb (Fianchetto) Variation |
| 23. D Solak vs Efimenko |
| ½-½ | 51 |
2003 |
4th IECC | B23 Sicilian, Closed |
| 24. Nisipeanu vs Efimenko |
| ½-½ | 23 |
2004 |
Bundesliga 2003-4 | B22 Sicilian, Alapin |
| 25. A Volokitin vs Efimenko |
 | 1-0 | 51 |
2004 |
73rd Ukrainian Championship | B86 Sicilian, Fischer-Sozin Attack |