| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. I Dubinka vs Efimenko |
| 0-1 | 40 |
2000 |
Ukrainian Team ch | E83 King's Indian, Samisch |
| 2. A Kamenets vs Efimenko |
| 0-1 | 36 |
2000 |
Ukrainian Team ch | E75 King's Indian, Averbakh, Main line |
| 3. G Nesterov vs Efimenko |
| 0-1 | 43 |
2000 |
Ukrainian Team ch | E61 King's Indian |
| 4. J Berkvens vs Efimenko |
| 0-1 | 33 |
2001 |
Stork YM | E97 King's Indian |
| 5. Korchnoi vs Efimenko |
| ½-½ | 45 |
2001 |
2nd IECC | E83 King's Indian, Samisch |
| 6. B Avrukh vs Efimenko |
| 1-0 | 80 |
2001 |
MTO | E92 King's Indian |
| 7. P Varga vs Efimenko |
| 0-1 | 30 |
2001 |
Master Open | E71 King's Indian, Makagonov System (5.h3) |
| 8. R Kempinski vs Efimenko |
| ½-½ | 35 |
2001 |
MTO | E60 King's Indian Defense |
| 9. V Tukmakov vs Efimenko |
| ½-½ | 37 |
2001 |
Master Open | E97 King's Indian |
| 10. J Santos vs Efimenko |
| 0-1 | 40 |
2001 |
ECC | E61 King's Indian |
| 11. R Ruck vs Efimenko |
| ½-½ | 44 |
2001 |
2nd IECC | E63 King's Indian, Fianchetto, Panno Variation |
| 12. V Malakhatko vs Efimenko |
| 0-1 | 38 |
2001 |
ch-UKR | E92 King's Indian |
| 13. V Burmakin vs Efimenko |
| 1-0 | 31 |
2001 |
2nd IECC | E67 King's Indian, Fianchetto |
| 14. Akopian vs Efimenko |
| ½-½ | 43 |
2002 |
Aeroflot Open | E67 King's Indian, Fianchetto |
| 15. Van Wely vs Efimenko |
| ½-½ | 21 |
2002 |
Aeroflot Open | E90 King's Indian |
| 16. Dreev vs Efimenko |
| 1-0 | 26 |
2002 |
Aeroflot Open | E83 King's Indian, Samisch |
| 17. W Schwaninger vs Efimenko |
| 0-1 | 33 |
2003 |
European Clubs Cup (Men) | E63 King's Indian, Fianchetto, Panno Variation |
| 18. S Halkias vs Efimenko |
| 1-0 | 19 |
2003 |
4th IECC | E92 King's Indian |
| 19. I Nikolaidis vs Efimenko |
| ½-½ | 34 |
2003 |
4th IECC | E70 King's Indian |
| 20. A Aleksandrov vs Efimenko |
| ½-½ | 38 |
2003 |
Aeroflot Open | E73 King's Indian |
| 21. A Shneider vs Efimenko |
| ½-½ | 14 |
2003 |
4th IECC | E97 King's Indian |
| 22. E Dizdarevic vs Efimenko |
| ½-½ | 18 |
2003 |
4th IECC | E67 King's Indian, Fianchetto |
| 23. S Volkov vs Efimenko |
| ½-½ | 136 |
2004 |
3rd Aeroflot Festival | E92 King's Indian |
| 24. E Kobylkin vs Efimenko |
| 1-0 | 43 |
2004 |
73rd Ukrainian Championship | E91 King's Indian |
| 25. Harikrishna vs Efimenko |
| 1-0 | 47 |
2004 |
6th Dubai Open | E63 King's Indian, Fianchetto, Panno Variation |
