| Mar 10, 2026 | Ragnarsson | 0–1 | Oleksiyenko | Kópavogur International Chess Tournament 2026 | Queen's Gambit Declined: Modern Variation, Knight Defense | |
| Mar 10, 2026 | Oleksiyenko | 0–1 | Pultinevicius | Kópavogur International Chess Tournament 2026 | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Mar 10, 2026 | Johannsson | ½–½ | Oleksiyenko | Kópavogur International Chess Tournament 2026 | East Indian Defense | |
| Mar 10, 2026 | Oleksiyenko | ½–½ | Stefansson | Kópavogur International Chess Tournament 2026 | Sicilian Defense: Nimzowitsch Variation, Closed Variation | |
| Mar 10, 2026 | Heimisson | 0–1 | Oleksiyenko | Kópavogur International Chess Tournament 2026 | Sicilian Defense: Moscow Variation | |
| Mar 10, 2026 | Oleksiyenko | 1–0 | Santos Latasa | Kópavogur International Chess Tournament 2026 | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Mar 10, 2026 | Birkisson | 1–0 | Oleksiyenko | Kópavogur International Chess Tournament 2026 | Queen's Gambit Accepted | |
| Mar 10, 2026 | Oleksiyenko | 1–0 | Kazakouski | Kópavogur International Chess Tournament 2026 | Semi-Slav Defense: Accelerated Move Order | |
| Mar 10, 2026 | Domalchuk-Jonasson | ½–½ | Oleksiyenko | Kópavogur International Chess Tournament 2026 | Indian Defense: Anti-Nimzo-Indian | |
| Mar 8, 2026 | Kazakouski | ½–½ | Oleksiyenko | Icelandic team chess championship premier league | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Mar 7, 2026 | Oleksiyenko | ½–½ | Santos Latasa | Icelandic team chess championship premier league | Sicilian Defense: Najdorf Variation | |
| Mar 7, 2026 | Stefansson | ½–½ | Oleksiyenko | Icelandic team chess championship premier league | Catalan Opening: Closed | |
| Mar 5, 2026 | Oleksiyenko | ½–½ | Wadsworth | Icelandic team chess championship premier league | French Defense: Exchange Variation | |
| Dec 23, 2025 | Oleksiyenko | ½–½ | Herasymenko | Round 3: Oleksiyenko, Mykhaylo - Herasymenko, Maksym | Caro-Kann Defense: Two Knights Attack | |
| Dec 23, 2025 | Mukha | 0–1 | Oleksiyenko | Round 2: Mukha, Mykola - Oleksiyenko, Mykhaylo | King's Indian Attack: Pachman System | |
| Dec 23, 2025 | Oleksiyenko | 1–0 | Vashchenko | Round 1: Oleksiyenko, Mykhaylo - Vashchenko, Illia | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Nov 27, 2025 | Petriashvili | 1–0 | Oleksiyenko | Round 8: Petriashvili, Nikoloz - Oleksiyenko, Mykhaylo | Nimzo-Larsen Attack: Classical Variation | |
| Nov 27, 2025 | Oleksiyenko | 1–0 | Vagman | Round 7: Oleksiyenko, Mykhaylo - Vagman, Roy | Sicilian Defense: Prins Variation | |
| Nov 26, 2025 | Oleksiyenko | ½–½ | Golberg | Round 5: Oleksiyenko, Mykhaylo - Golberg, Igor | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Nov 26, 2025 | Oleksiyenko | ½–½ | Segev | Round 1: Oleksiyenko, Mykhaylo - Segev, Oz | French Defense: Tarrasch Variation, Guimard Defense, Main Line | |
| Nov 14, 2025 | Oleksiyenko | 0–1 | Donchenko | Icelandic team chess championship premier league | Sicilian Defense: Najdorf Variation | |
| Apr 28, 2024 | Oleksiyenko | ½–½ | Hausrath | SchachBuli Runde 15 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Apr 27, 2024 | Ragger | ½–½ | Oleksiyenko | SchachBuli Runde 14 | Catalan Opening: Closed | |
| Feb 25, 2024 | Oleksiyenko | ½–½ | Duda | Schachbundesliga 23/24 | Four Knights Game: Scotch Variation Accepted | |
| Feb 24, 2024 | Kamsky | ½–½ | Oleksiyenko | Schachbundesliga 23/24 | Sicilian Defense: Pin Variation, Koch Variation | |
| Feb 23, 2024 | Aronian | ½–½ | Oleksiyenko | Schachbundesliga 23/24 | Queen's Pawn Game: Zukertort Variation | |
| Feb 4, 2024 | Oleksiyenko | 1–0 | Neef | Dt. Schachbundesliga 2023/2024 | French Defense: Advance Variation, Lputian Variation | |
| Feb 3, 2024 | Schulze | ½–½ | Oleksiyenko | Dt. Schachbundesliga 2023/2024 | Sicilian Defense: Modern Variations | |
| Dec 23, 2024 | Oleksiyenko | 1–0 | Karpinets | Round 1: Oleksiyenko, Mykhaylo - Karpinets, Andrian | Sicilian Defense: Four Knights Variation | |
| Dec 23, 2024 | Oleksiyenko | 1–0 | Laptii | Round 3: Oleksiyenko, Mykhaylo - Laptii, Nazar | Modern Defense: Three Pawns Attack | |
| Dec 23, 2024 | Oleksiyenko | 1–0 | Dubnevych | Round 7: Oleksiyenko, Mykhaylo - Dubnevych, Maksym | Four Knights Game | |
| Dec 23, 2024 | Oleksiyenko | ½–½ | Mosesov | Round 9: Oleksiyenko, Mykhaylo - Mosesov, Danyil | Indian Defense: Knights Variation | |
| Dec 23, 2024 | Kaliuzhny | 0–1 | Oleksiyenko | Round 2: Kaliuzhny, Andrey - Oleksiyenko, Mykhaylo | Queen's Pawn Game: Colle System | |
| Dec 23, 2024 | Dyachuk | ½–½ | Oleksiyenko | Round 4: Dyachuk, Artem - Oleksiyenko, Mykhaylo | Queen's Gambit Declined: Queen's Knight Variation | |
| Dec 23, 2024 | Fishchuk | 1–0 | Oleksiyenko | Round 6: Fishchuk, Vladyslav - Oleksiyenko, Mykhaylo | Van Geet Opening | |
| Dec 23, 2024 | Khristovoy | 0–1 | Oleksiyenko | Round 8: Khristovoy, Dmitriy - Oleksiyenko, Mykhaylo | Sicilian Defense: Alapin Variation, Barmen Defense | |
| Dec 22, 2024 | Oleksiyenko | 1–0 | Pilchuk | Round 2: Oleksiyenko, Mykhaylo - Pilchuk, Artem | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Dec 22, 2024 | Oleksiyenko | 1–0 | Dubnevych | Round 6: Oleksiyenko, Mykhaylo - Dubnevych, Maksym | Ruy Lopez: Exchange Variation, Alapin Gambit | |
| Dec 22, 2024 | Oleksiyenko | 1–0 | Grebeniuk | Round 8: Oleksiyenko, Mykhaylo - Grebeniuk, Semen | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Dec 22, 2024 | Oleksiyenko | ½–½ | Fishchuk | Round 10: Oleksiyenko, Mykhaylo - Fishchuk, Vladyslav | Ruy Lopez: Exchange Variation, Normal Variation | |
| Dec 22, 2024 | Vetoshko | ½–½ | Oleksiyenko | Round 9: Vetoshko, Volodymyr - Oleksiyenko, Mykhaylo | Slav Defense: Exchange Variation | |
| Dec 22, 2024 | Tretiak | 0–1 | Oleksiyenko | Round 1: Tretiak, Igor - Oleksiyenko, Mykhaylo | Sicilian Defense: French Variation | |
| Dec 22, 2024 | Andriienko | 0–1 | Oleksiyenko | Round 3: Andriienko, Artom - Oleksiyenko, Mykhaylo | Zukertort Opening | |
| Dec 22, 2024 | Vetoshko | 1–0 | Oleksiyenko | Round 5: Vetoshko, Volodymyr - Oleksiyenko, Mykhaylo | King's Indian Defense: Semi-Averbakh System | |
| Dec 22, 2024 | Dyachuk | 1–0 | Oleksiyenko | Round 7: Dyachuk, Artem - Oleksiyenko, Mykhaylo | Sicilian Defense: Kan Variation, Maróczy Bind, Réti Variation | |
| Dec 22, 2024 | Polulikh | * | Oleksiyenko | Round 9: Polulikh, Bogdan - Oleksiyenko, Mykhaylo | Queen's Pawn Game: Colle System | |
| Dec 22, 2024 | Maly | 0–1 | Oleksiyenko | Round 11: Maly, Alexey - Oleksiyenko, Mykhaylo | Queen's Gambit Declined | |
| Dec 21, 2024 | Domin | 0–1 | Oleksiyenko | Round 8: Domin, Yan - Oleksiyenko, Mykhaylo | Sicilian Defense: Delayed Alapin Variation | |
| Dec 20, 2024 | Oleksiyenko | ½–½ | Mosesov | Round 7: Oleksiyenko, Mykhaylo - Mosesov, Danyil | English Opening: Symmetrical Variation, Three Knights Variation | |
| Dec 19, 2024 | Grebeniuk | 0–1 | Oleksiyenko | Round 6: Grebeniuk, Semen - Oleksiyenko, Mykhaylo | King's Indian Defense: Petrosian Variation | |
| Dec 18, 2024 | Oleksiyenko | * | Snigurov | Round 5: Oleksiyenko, Mykhaylo - Snigurov, Maxim | Modern Defense: Lizard Defense, Mittenberger Gambit | |
| Dec 17, 2024 | Artemov | 0–1 | Oleksiyenko | Round 4: Artemov, Andriy - Oleksiyenko, Mykhaylo | Sicilian Defense: Najdorf Variation | |
| Dec 14, 2024 | Oleksiyenko | ½–½ | Kovalchuk | Round 1: Oleksiyenko, Mykhaylo - Kovalchuk, Victor | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Oct 13, 2024 | Kislinsky | 0–1 | Oleksiyenko | Round 9: Kislinsky, Alexey - Oleksiyenko, Mykhaylo | Sicilian Defense: Delayed Alapin Variation | |
| Oct 12, 2024 | Oleksiyenko | ½–½ | Pacher | Round 7: Oleksiyenko, Mykhaylo - Pacher, Milan | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Oct 12, 2024 | Oleksiyenko | 1–0 | Dyachuk | Round 8: Oleksiyenko, Mykhaylo - Dyachuk, Artem | Semi-Slav Defense: Normal Variation | |
| Oct 11, 2024 | Pavlov | 0–1 | Oleksiyenko | Round 6: Pavlov, Sergey - Oleksiyenko, Mykhaylo | Zukertort Opening | |
| Oct 10, 2024 | Oleksiyenko | 1–0 | Baranciuc | Round 5: Oleksiyenko, Mykhaylo - Baranciuc, Alexandr | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Oct 10, 2024 | Asadli | ½–½ | Oleksiyenko | Round 4: Asadli, Vugar - Oleksiyenko, Mykhaylo | Four Knights Game: Scotch Variation Accepted | |
| Oct 9, 2024 | Oleksiyenko | ½–½ | Grekh | Round 3: Oleksiyenko, Mykhaylo - Grekh, Andrey | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Oct 9, 2024 | Fishchuk | ½–½ | Oleksiyenko | Round 2: Fishchuk, Vladyslav - Oleksiyenko, Mykhaylo | Catalan Opening: Closed | |
| Oct 8, 2024 | Oleksiyenko | ½–½ | Mosesov | Round 1: Oleksiyenko, Mykhaylo - Mosesov, Danyil | Indian Defense: Knights Variation | |
| Oct 7, 2024 | Oleksiyenko | ½–½ | Baranciuc | Round 1: Oleksiyenko, Mykhaylo - Baranciuc, Alexandr | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Oct 7, 2024 | Oleksiyenko | 0–1 | Asadli | Round 2: Oleksiyenko, Mykhaylo - Asadli, Vugar | Indian Defense: Anti-Nimzo-Indian | |
| Oct 7, 2024 | Oleksiyenko | 1–0 | Kislinsky | Round 4: Oleksiyenko, Mykhaylo - Kislinsky, Alexey | French Defense: Tarrasch Variation | |
| Oct 7, 2024 | Oleksiyenko | 0–1 | Pavlov | Round 6: Oleksiyenko, Mykhaylo - Pavlov, Sergey | Sicilian Defense: Keres Variation | |
| Oct 7, 2024 | Oleksiyenko | 1–0 | Dyachuk | Round 8: Oleksiyenko, Mykhaylo - Dyachuk, Artem | Indian Defense: King's Indian Variation, Fianchetto Variation | |
| Oct 7, 2024 | Pacher | 0–1 | Oleksiyenko | Round 3: Pacher, Milan - Oleksiyenko, Mykhaylo | Slav Defense: Czech Variation, Krause Attack | |
| Oct 7, 2024 | Grekh | ½–½ | Oleksiyenko | Round 5: Grekh, Andrey - Oleksiyenko, Mykhaylo | Caro-Kann Defense: Exchange Variation | |
| Oct 7, 2024 | Mosesov | 0–1 | Oleksiyenko | Round 7: Mosesov, Danyil - Oleksiyenko, Mykhaylo | King's Indian Attack: Double Fianchetto | |
| Oct 7, 2024 | Fishchuk | 0–1 | Oleksiyenko | Round 9: Fishchuk, Vladyslav - Oleksiyenko, Mykhaylo | Caro-Kann Defense: Tartakower Variation | |
| Sep 26, 2023 | Lagarde | 1–0 | Oleksiyenko | Polish Ekstraliga | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Sep 25, 2023 | Oleksiyenko | ½–½ | Abasov | Polish Ekstraliga | Sicilian Defense: Classical Variation | |
| Sep 24, 2023 | Oleksiyenko | 0–1 | Donchenko | Polish Ekstraliga | Sicilian Defense: Najdorf Variation | |
| Sep 22, 2023 | Oleksiyenko | 0–1 | Grandelius | Polish Ekstraliga | Sicilian Defense: Kalashnikov Variation | |
| Sep 21, 2023 | Leniart | 1–0 | Oleksiyenko | Polish Ekstraliga | Queen's Pawn Game: Accelerated London System | |
| Sep 20, 2023 | Oleksiyenko | ½–½ | Svane | Polish Ekstraliga | Ruy Lopez: Open, Howell Attack | |
| Sep 19, 2023 | Tari | ½–½ | Oleksiyenko | Polish Ekstraliga | Petrov's Defense: Modern Attack | |
| Sep 18, 2023 | Oleksiyenko | 0–1 | Andersen | Polish Ekstraliga | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Mar 19, 2023 | Donchenko | 1–0 | Oleksiyenko | Icelandic Team Championship | English Opening: King's English Variation | |
| Mar 18, 2023 | Oleksiyenko | ½–½ | Kazakouski | Icelandic Team Championship | Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid | |
| Mar 18, 2023 | Cheparinov | ½–½ | Oleksiyenko | Icelandic Team Championship | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Mar 17, 2023 | Oleksiyenko | ½–½ | Gajewski | Icelandic Team Championship | Sicilian Defense: Taimanov Variation | |
| Nov 22, 2022 | Kevlishvili | ½–½ | Oleksiyenko | 2022 FIDE World Team Championship | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Nov 20, 2022 | Mhango | 0–1 | Oleksiyenko | 2022 FIDE World Team Championship | Zukertort Opening: Sicilian Invitation | |
| Oct 16, 2022 | Oleksiyenko | 1–0 | Lomasov | Icelandic Team Championship | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Oct 15, 2022 | Oleksiyenko | ½–½ | Cheparinov | Icelandic Team Championship | Sicilian Defense: Classical Variation | |
| Oct 15, 2022 | Steingrimsson | ½–½ | Oleksiyenko | Icelandic Team Championship | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Oct 14, 2022 | Dziuba | 1–0 | Oleksiyenko | Icelandic Team Championship | Slav Defense | |
| Jul 17, 2022 | Thybo | ½–½ | Oleksiyenko | Aarhus GM | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Jul 16, 2022 | Oleksiyenko | ½–½ | Liu | Aarhus GM | Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense | |
| Jul 15, 2022 | Oleksiyenko | 1–0 | Rozentalis | Aarhus GM | French Defense: Tarrasch Variation, Open System, Advance Line | |
| Jul 15, 2022 | Hagen | * | Oleksiyenko | Aarhus GM | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jul 14, 2022 | Baklan | ½–½ | Oleksiyenko | Aarhus GM | Ruy Lopez: Berlin Defense, Rio Gambit Accepted | |
| Jul 13, 2022 | Oleksiyenko | 1–0 | Ochsner | Aarhus GM | Sicilian Defense: Najdorf Variation | |
| Jul 13, 2022 | Oleksiyenko | 1–0 | Hillarp Persson | Aarhus GM | Caro-Kann Defense: Two Knights Attack | |
| Jul 12, 2022 | Olsen | 0–1 | Oleksiyenko | Aarhus GM | Queen's Indian Defense: Fianchetto Variation | |
| Oct 17, 2021 | Oleksiyenko | ½–½ | Kamsky | Schachbundesliga | Ruy Lopez: Open Berlin Defense, l'Hermet Variation | |
| Oct 17, 2021 | Vachier-Lagrave | 1–0 | Oleksiyenko | Schachbundesliga | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Oct 16, 2021 | Inarkiev | ½–½ | Oleksiyenko | Schachbundesliga | Slav Defense: Quiet Variation, Schallopp Defense | |