| — | Efimenko | 1–0 | Plat | Schachbundesliga | Neo-Grünfeld Defense: Delayed Exchange Variation | |
| — | Krejci | ½–½ | Efimenko | Schachbundesliga | Ruy Lopez: Closed, Delayed Exchange | |
| Apr 26, 2026 | Baum | 1–0 | Efimenko | Round 15: Baum, Jonasz - Efimenko, Zahar | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line | |
| Apr 25, 2026 | Efimenko | ½–½ | Druska | Round 14: Efimenko, Zahar - Druska, Juraj | French Defense: Advance Variation, Paulsen Attack | |
| Apr 24, 2026 | Predojevic | ½–½ | Efimenko | BL 2526 SV Werder Bremen - SK Kirchweyhe | Italian Game: Classical Variation, Greco Gambit, Modern Line | |
| Mar 22, 2026 | Janik | ½–½ | Efimenko | Round 10: Janik, Igor - Efimenko, Zahar | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Mar 21, 2026 | Efimenko | ½–½ | Lampert | 1. BL Pauli | Bishop's Opening: Vienna Hybrid, Spielmann Attack | |
| Mar 1, 2026 | Kryvoruchko | ½–½ | Efimenko | 1. BL Bremen | King's Knight Opening: Konstantinopolsky | |
| Feb 28, 2026 | Efimenko | 0–1 | Korobov | 1. BL Bremen | Sicilian Defense: Moscow Variation | |
| Feb 8, 2026 | Efimenko | ½–½ | Alonso Rosell | Bundesliga - Kirchweyhe | Sicilian Defense: O'Kelly Variation, Venice System, Gambit Line | |
| Feb 7, 2026 | Bogosavljevic | ½–½ | Efimenko | Bundesliga - Kirchweyhe | King's Indian Attack | |
| Jan 11, 2026 | Efimenko | ½–½ | Winterberg | 1. BL Bremen | Petrov's Defense: Classical Attack, Staunton Variation | |
| Jan 10, 2026 | Bacrot | ½–½ | Efimenko | 1. BL Bremen | Ruy Lopez: Marshall Attack, Modern Variation | |
| Dec 7, 2025 | Ragger | ½–½ | Efimenko | Deutsche Schach-Bundesliga | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Dec 6, 2025 | Efimenko | ½–½ | Pijpers | Deutsche Schach-Bundesliga | Sicilian Defense: Moscow Variation, Main Line | |
| Sep 28, 2025 | Shengelia | ½–½ | Efimenko | Schachbundesliga 2025/26 | Nimzo-Indian Defense: Normal Variation, Gligoric System | |
| Sep 27, 2025 | Efimenko | ½–½ | Kamsky | Schachbundesliga 2025/26 | Ruy Lopez: Closed, Anti-Marshall | |
| Apr 27, 2025 | Idani | 1–0 | Efimenko | Schachbundesliga | Italian Game: Classical Variation, Giuoco Pianissimo, Albin Variation | |
| Apr 26, 2025 | Efimenko | 1–0 | Sankalp Gupta | Schachbundesliga | Queen's Pawn Game: Colle System | |
| Apr 25, 2025 | Efimenko | 0–1 | Socko | Schachbundesliga | Petrov's Defense: Modern Attack, Center Variation | |
| Mar 23, 2025 | Vitiugov | ½–½ | Efimenko | 1. BL Pauli | Ruy Lopez: Closed | |
| Mar 22, 2025 | Efimenko | 1–0 | Gupta | 1. BL Pauli | Sicilian Defense: Chekhover Variation | |
| Feb 23, 2025 | Zelbel | ½–½ | Efimenko | 1. BL Bremen | Scotch Game: Romanishin Variation | |
| Feb 22, 2025 | Efimenko | ½–½ | Kadric | 1. BL Bremen | Pirc Defense | |
| Feb 1, 2025 | Efimenko | ½–½ | Kempinski | Bundesliga 2024/2025 | Zukertort Opening | |
| Jan 12, 2025 | Andersen | 0–1 | Efimenko | Schachbundesliga 24/25 | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Jan 11, 2025 | Efimenko | 0–1 | Van Foreest | Schachbundesliga 24/25 | Ruy Lopez: Closed, Martinez Variation | |
| Dec 1, 2024 | Anton Guijarro | ½–½ | Efimenko | Bundesliga 24/25 | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Nov 30, 2024 | Efimenko | 1–0 | Zilka | Bundesliga 24/25 | Ruy Lopez: Morphy Defense, Tarrasch Variation | |
| Oct 6, 2024 | Razafindratsima | ½–½ | Efimenko | Schachbundesliga 2024/25ament description | Ruy Lopez: Closed, Anti-Marshall | |
| Oct 5, 2024 | Efimenko | ½–½ | Pechac | Schachbundesliga 2024/25ament description | Ruy Lopez: Berlin Defense | |
| Apr 28, 2024 | Kamsky | ½–½ | Efimenko | Bundesliga 2023/2024 | Queen's Pawn Game: London System | |
| Apr 27, 2024 | Efimenko | ½–½ | Maghsoodloo | Bundesliga 2023/2024 | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Mar 10, 2024 | Efimenko | ½–½ | Teclaf | Runde 9: Efimenko, Zahar - Teclaf, Pawel | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Mar 9, 2024 | Efimenko | ½–½ | Cheng | Runde 8: Efimenko, Zahar - Cheng, Bobby | Sicilian Defense: Najdorf Variation, Lipnitsky Attack | |
| Mar 8, 2024 | Wachinger | 0–1 | Efimenko | Runde 7: Wachinger, Nikolas - Efimenko, Zahar | Ruy Lopez: Closed, Keres Defense | |
| Mar 7, 2024 | Efimenko | ½–½ | Gloeckler | Runde 6: Efimenko, Zahar - Gloeckler, Christian | Zukertort Opening | |
| Mar 6, 2024 | Aditya Mittal | 1–0 | Efimenko | Runde 5: Aditya Mittal - Efimenko, Zahar | Ruy Lopez: Closed | |
| Mar 5, 2024 | Efimenko | 1–0 | Schneider | Runde 4: Efimenko, Zahar - Schneider, Jana | Zukertort Opening | |
| Mar 4, 2024 | Plat | ½–½ | Efimenko | Runde 3: Plat, Vojtech - Efimenko, Zahar | Nimzo-Indian Defense: Classical Variation, Noa Variation | |
| Mar 3, 2024 | Efimenko | 1–0 | Reuker | Runde 2: Efimenko, Zahar - Reuker, Jari | Ruy Lopez: Berlin Defense | |
| Mar 2, 2024 | Breutigam | ½–½ | Efimenko | Runde 1: Breutigam, Martin - Efimenko, Zahar | Rat Defense: English Rat | |
| Feb 25, 2024 | Efimenko | ½–½ | Dragnev | Schachbundesliga 23/24 | Ruy Lopez: Closed, Martinez Variation | |
| Feb 24, 2024 | Efimenko | ½–½ | Zysk | Schachbundesliga 23/24 | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| Feb 23, 2024 | Stevic | ½–½ | Efimenko | Schachbundesliga 23/24 | Four Knights Game: Spanish Variation | |
| Jan 14, 2024 | Yuffa | 1–0 | Efimenko | Schachbundesliga 2023 / 2024 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Jan 13, 2024 | Efimenko | 1–0 | Svane | Schachbundesliga 2023 / 2024 | Sicilian Defense: Moscow Variation, Main Line | |
| Nov 21, 2024 | Kuzubov | ½–½ | Efimenko | Round 9: Kuzubov, Yuriy - Efimenko, Zahar | Indian Defense: Wade-Tartakower Defense | |
| Nov 20, 2024 | Efimenko | ½–½ | Poltorak | Round 8: Efimenko, Zahar - Poltorak, Sebastian | Sicilian Defense: French Variation | |
| Nov 20, 2024 | Ris | ½–½ | Efimenko | Round 7: Ris, Robert - Efimenko, Zahar | Ruy Lopez: Closed, Delayed Exchange | |
| Nov 19, 2024 | Efimenko | ½–½ | Prohaszka | Round 6: Efimenko, Zahar - Prohaszka, Peter | Ruy Lopez: Berlin Defense | |
| Nov 18, 2024 | Efimenko | 1–0 | Polzin | Round 4: Efimenko, Zahar - Polzin, Rainer | King's Indian Defense: Makogonov Variation | |
| Nov 18, 2024 | Meier | ½–½ | Efimenko | Round 5: Meier, Georg - Efimenko, Zahar | King's Indian Attack: Sicilian Variation | |
| Nov 17, 2024 | Efimenko | ½–½ | Kopylov | Round 2: Efimenko, Zahar - Kopylov, Daniel | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Nov 17, 2024 | Knuedel | ½–½ | Efimenko | Round 3: Knuedel, Torben - Efimenko, Zahar | Ruy Lopez: Closed, Smyslov Defense | |
| Nov 16, 2024 | Hampel | ½–½ | Efimenko | Round 1: Hampel, Felix - Efimenko, Zahar | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Dec 3, 2023 | Efimenko | ½–½ | Beerdsen | 1. Bundesliga | Sicilian Defense: Scheveningen Variation, Classical Main Line | |
| Dec 2, 2023 | Ragger | 1–0 | Efimenko | 1. Bundesliga | Catalan Opening: Closed Variation, Traditional Variation | |
| Oct 22, 2023 | Vogel | ½–½ | Efimenko | Deutsche Bundesliga 2023/2024 | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Oct 21, 2023 | Efimenko | ½–½ | Walter | Deutsche Bundesliga 2023/2024 | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Apr 30, 2023 | Kempinski | ½–½ | Efimenko | Schachbundesliga | Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line | |
| Apr 29, 2023 | Efimenko | ½–½ | Thybo | Schachbundesliga | Sicilian Defense: Closed, Anti-Sveshnikov Variation, with d6 | |
| Apr 2, 2023 | Efimenko | ½–½ | Indjic | Schachbundesliga | Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line | |
| Apr 1, 2023 | Stojanovic | ½–½ | Efimenko | Schachbundesliga | Ruy Lopez: Morphy Defense, Mackenzie Variation | |
| Mar 19, 2023 | Efimenko | ½–½ | Jaracz | Schachbundesliga | Zukertort Opening: Queenside Fianchetto Variation | |
| Mar 18, 2023 | Buhmann | 1–0 | Efimenko | Schachbundesliga | Pirc Defense | |
| Feb 26, 2023 | Gupta | 1–0 | Efimenko | Schachbundesliga | Modern Defense: Averbakh System | |
| Feb 25, 2023 | Efimenko | 1–0 | Lokander | Schachbundesliga | Slav Defense: Quiet Variation, Schallopp Defense | |
| Nov 27, 2022 | Efimenko | 1–0 | Plenca | Schachbundesliga | Ruy Lopez: Morphy Defense | |
| Nov 25, 2022 | Markus | ½–½ | Efimenko | Schachbundesliga | Catalan Opening: Open Defense | |
| Oct 23, 2022 | Efimenko | ½–½ | L'Ami | Schachbundesliga | King's Indian Attack: Symmetrical Defense | |
| Oct 22, 2022 | Fridman | ½–½ | Efimenko | Schachbundesliga | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Rare Line | |
| Jul 10, 2022 | Efimenko | ½–½ | Mueller | Schachbundesliga | Nimzo-Larsen Attack: Classical Variation | |
| Jul 9, 2022 | Efimenko | ½–½ | Tomczak | Schachbundesliga | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| May 29, 2022 | Efimenko | 1–0 | Anton Guijarro | Schachbundesliga | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| May 28, 2022 | L'Ami | ½–½ | Efimenko | Schachbundesliga | King's Indian Defense: Sämisch Variation, Sämisch Gambit | |
| May 15, 2022 | Efimenko | ½–½ | Khenkin | Schachbundesliga | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| May 14, 2022 | Papp | ½–½ | Efimenko | Schachbundesliga | Sicilian Defense: Four Knights Variation | |
| Mar 21, 2022 | Efimenko | 0–1 | Kogan | Solidarity Friendly Match Israel-Ukraine | King's Indian Attack | |
| Mar 21, 2022 | Kogan | ½–½ | Efimenko | Solidarity Friendly Match Israel-Ukraine | Modern Defense: Standard Defense | |
| Mar 6, 2022 | Efimenko | * | Kamsky | Bundesliga | ? | |
| Mar 5, 2022 | Kasimdzhanov | * | Efimenko | Bundesliga | ? | |
| Dec 30, 2021 | Efimenko | ½–½ | Kolosowski | Open | King's Indian Attack: Symmetrical Defense | |
| Dec 30, 2021 | Efimenko | 1–0 | Samunenkov | Open | Zukertort Opening | |
| Dec 30, 2021 | Efimenko | 1–0 | Dziuba | Open | King's Indian Attack: Symmetrical Defense | |
| Dec 30, 2021 | Efimenko | 1–0 | Blohberger | Open | King's Indian Attack: Symmetrical Defense | |
| Dec 30, 2021 | Efimenko | 1–0 | Tari | FIDE World Blitz Championship | Neo-Grünfeld Defense: Ultra-Delayed Exchange Variation | |
| Dec 30, 2021 | Theodorou | 1–0 | Efimenko | Open | Queen's Pawn Game | |
| Dec 30, 2021 | Nasuta | ½–½ | Efimenko | Open | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Dec 30, 2021 | Petrovskyi | ½–½ | Efimenko | Open | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| Dec 30, 2021 | Mitrabha | 0–1 | Efimenko | Open | Queen's Pawn Game | |
| Dec 29, 2021 | Efimenko | ½–½ | Jakubowski | Open | King's Indian Attack | |
| Dec 29, 2021 | Efimenko | ½–½ | Kosakowski | Open | King's Indian Attack: Spassky Variation | |
| Dec 29, 2021 | Efimenko | 0–1 | Teclaf | Open | Zukertort Opening | |
| Dec 29, 2021 | Efimenko | 0–1 | Saraci | Open | Ruy Lopez: Morphy Defense, Fianchetto Defense Deferred | |
| Dec 29, 2021 | Efimenko | ½–½ | Zilka | FIDE World Blitz Championship | King's Indian Attack | |
| Dec 29, 2021 | Nguyen | ½–½ | Efimenko | Open | Modern Defense: Standard Defense | |
| Dec 29, 2021 | Parligras | 0–1 | Efimenko | Open | Pirc Defense | |
| Dec 29, 2021 | Klekowski | ½–½ | Efimenko | Open | English Opening: King's English Variation | |
| Dec 29, 2021 | Bologan | 1–0 | Efimenko | Open | Modern Defense: Kotov Variation | |