17 games · 2012–2026 · 7 classical · 10 online
Korobov 77 draws3 Efimenko
61.8% for Korobov
Openings between them
| B51 | Sicilian Defense: Moscow Variation | 4 | 62.5% |
| A41 | Rat Defense: English Rat | 2 | 75.0% |
| B30 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | 2 | 75.0% |
| A05 | King's Indian Attack: Spassky Variation | 1 | 100.0% |
| A30 | English Opening: Symmetrical Variation | 1 | 0.0% |
| A40 | Queen's Pawn Game: Modern Defense | 1 | 100.0% |
| B08 | Pirc Defense: Classical Variation, Quiet System, Parma Defense | 1 | 0.0% |
| B67 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | 1 | 50.0% |
| E12 | Queen's Indian Defense: Petrosian Variation, Farago Defense | 1 | 50.0% |
| E15 | Queen's Indian Defense: Fianchetto Variation | 1 | 50.0% |
| E20 | Nimzo-Indian Defense: Romanishin Variation, English Hybrid | 1 | 50.0% |
| E52 | Nimzo-Indian Defense: Normal Variation, Schlechter Defense | 1 | 100.0% |
All games
| Efimenko, Z2565 | 0-1 | Korobov, A2616 | Bundesliga 2025-26 | 2026 |
| Korobov, A2688 | ½-½ | Efimenko, Z2602 | ch-Schachbundesliga 2020 | 2020 |
| Efimenko, Z2602 | 0-1 | Korobov, A2688 | 33rd Leon Blitz Open 2020 | 2020 |
| Efimenko, Z2602 | ½-½ | Korobov, A2688 | Gladiators June 4th 2020 | 2020 |
| Korobov, A2688 | 0-1 | Efimenko, Z2602 | Gladiators June 4th 2020 | 2020 |
| Efimenko, Z2602 | 1-0 | Korobov, A2688 | Gladiators June 4th 2020 | 2020 |
| Korobov, A2688 | 1-0 | Efimenko, Z2602 | Gladiators June 4th 2020 | 2020 |
| Efimenko, Z2602 | ½-½ | Korobov, A2688 | Gladiators June 4th 2020 | 2020 |
| Korobov, A2688 | 1-0 | Efimenko, Z2602 | Gladiators June 4th 2020 | 2020 |
| Efimenko, Z2602 | 0-1 | Korobov, A2688 | Gladiators June 4th 2020 | 2020 |
| Korobov, A2688 | ½-½ | Efimenko, Z2602 | Gladiators June 4th 2020 | 2020 |
| Efimenko, Z2602 | 0-1 | Korobov, A2688 | Gladiators June 4th 2020 | 2020 |
| Efimenko, Z2651 | 1-0 | Korobov, A2692 | 85th ch-UKR 2016 | 2016 |
| Korobov, A2699 | 1-0 | Efimenko, Z | TCh-TUR First League 2015 | 2015 |
| Korobov, A2698 | ½-½ | Efimenko, Z2647 | 8th Asrian Memorial 2015 | 2015 |
| Korobov, A2715 | ½-½ | Efimenko, Z2651 | 82nd ch-UKR 2013 | 2013 |
| Efimenko, Z2689 | ½-½ | Korobov, A2678 | 81st ch-UKR 2012 | 2012 |