| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Miroshnichenko vs Efimenko |
| ½-½ | 17 |
2001 |
2nd Governor's Cup | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 27. P Varga vs Efimenko |
| 0-1 | 30 |
2001 |
Master Open | E71 King's Indian, Makagonov System (5.h3) |
| 28. J Berkvens vs Efimenko |
| 0-1 | 33 |
2001 |
Stork YM | E97 King's Indian |
| 29. V Komliakov vs Efimenko |
| ½-½ | 11 |
2001 |
2nd Governor's Cup | C00 French Defense |
| 30. V Burmakin vs Efimenko |
| 1-0 | 31 |
2001 |
2nd IECC | E67 King's Indian, Fianchetto |
| 31. V Malakhatko vs Efimenko |
| 0-1 | 38 |
2001 |
ch-UKR | E92 King's Indian |
| 32. J Santos vs Efimenko |
| 0-1 | 40 |
2001 |
ECC | E61 King's Indian |
| 33. Efimenko vs Sedlak |
| 1-0 | 78 |
2001 |
TCh-Europe Boys U18 | B92 Sicilian, Najdorf, Opocensky Variation |
| 34. Efimenko vs M Cornette |
| 1-0 | 24 |
2001 |
WYB16 | C67 Ruy Lopez |
| 35. Efimenko vs E Vovsha |
| 1-0 | 48 |
2001 |
MTO | B09 Pirc, Austrian Attack |
| 36. Efimenko vs E Vorobiov |
| ½-½ | 11 |
2001 |
2nd Governor's Cup | A37 English, Symmetrical |
| 37. Korchnoi vs Efimenko |
| ½-½ | 45 |
2001 |
2nd IECC | E83 King's Indian, Samisch |
| 38. Efimenko vs N Firman |
| ½-½ | 59 |
2001 |
Stork YM | C05 French, Tarrasch |
| 39. S Ovsejevitsch vs Efimenko |
| ½-½ | 35 |
2001 |
ch-UKR | D20 Queen's Gambit Accepted |
| 40. Efimenko vs A Korobov |
| ½-½ | 9 |
2001 |
2nd Governor's Cup | C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 |
| 41. R Ruck vs Efimenko |
| ½-½ | 44 |
2001 |
2nd IECC | E63 King's Indian, Fianchetto, Panno Variation |
| 42. M Erwich vs Efimenko |
| ½-½ | 36 |
2001 |
WYB16 | C02 French, Advance |
| 43. H Sadeghi vs Efimenko |
| 0-1 | 39 |
2001 |
MTO | A02 Bird's Opening |
| 44. Efimenko vs Karjakin |
| 1-0 | 43 |
2001 |
2nd Governor's Cup | B17 Caro-Kann, Steinitz Variation |
| 45. V Tukmakov vs Efimenko |
| ½-½ | 37 |
2001 |
Master Open | E97 King's Indian |
| 46. Efimenko vs V Mikhalevski |
| ½-½ | 32 |
2001 |
MTO | C80 Ruy Lopez, Open |
| 47. Efimenko vs Miroshnichenko |
| ½-½ | 22 |
2001 |
2nd Governor's Cup | B61 Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2 |
| 48. Efimenko vs Blatny |
| 1-0 | 68 |
2001 |
2nd IECC | C10 French |
| 49. Efimenko vs N Vink |
| ½-½ | 60 |
2001 |
Stork YM | B92 Sicilian, Najdorf, Opocensky Variation |
| 50. Areshchenko vs Efimenko |
| ½-½ | 53 |
2001 |
ch-UKR | C18 French, Winawer |