| 26 ago 2026 | Oleksiyenko, Mykhaylo 2558 | Vetoshko, Volodymyr 2504 | 1-0 | B32 Defensa Siciliana: Godiva Variation | casual classical game | 29 | Ver |
| 10 mar 2026 | Ragnarsson, Dagur 2376 | Oleksiyenko, Mykhaylo 2569 | 0-1 | D51 Gambito de Dama rehusado: Modern Variation, Knight Defense | Kópavogur International Chess Tournament 2026 | 37 | Ver |
| 10 mar 2026 | Oleksiyenko, Mykhaylo 2569 | Pultinevicius, Paulius 2563 | 0-1 | B48 Defensa Siciliana: Taimanov Variation, Bastrikov Variation, English Attack | Kópavogur International Chess Tournament 2026 | 35 | Ver |
| 10 mar 2026 | Johannsson, Birkir Isak 2260 | Oleksiyenko, Mykhaylo 2569 | ½-½ | A48 East Indian Defense | Kópavogur International Chess Tournament 2026 | 40 | Ver |
| 10 mar 2026 | Oleksiyenko, Mykhaylo 2569 | Stefansson, Vignir Vatnar 2511 | ½-½ | B29 Defensa Siciliana: Nimzowitsch Variation, Closed Variation | Kópavogur International Chess Tournament 2026 | 36 | Ver |
| 10 mar 2026 | Heimisson, Hilmir Freyr 2300 | Oleksiyenko, Mykhaylo 2569 | 0-1 | B51 Defensa Siciliana: Moscow Variation | Kópavogur International Chess Tournament 2026 | 41 | Ver |
| 10 mar 2026 | Oleksiyenko, Mykhaylo 2569 | Santos Latasa, Jaime 2618 | 1-0 | A28 Apertura Inglesa: King's English Variation, Four Knights Variation, Quiet Line | Kópavogur International Chess Tournament 2026 | 62 | Ver |
| 10 mar 2026 | Birkisson, Bardur Orn 2207 | Oleksiyenko, Mykhaylo 2569 | 1-0 | D24 Gambito de Dama aceptado | Kópavogur International Chess Tournament 2026 | 48 | Ver |
| 10 mar 2026 | Oleksiyenko, Mykhaylo 2569 | Kazakouski, Valery 2575 | 1-0 | D31 Defensa Semieslava: Anti-Noteboom, Stonewall Variation | Kópavogur International Chess Tournament 2026 | 36 | Ver |
| 10 mar 2026 | Domalchuk-Jonasson, Aleksandr 2362 | Oleksiyenko, Mykhaylo 2569 | ½-½ | E10 Defensa India: Anti-Nimzo-Indian | Kópavogur International Chess Tournament 2026 | 30 | Ver |
| 8 mar 2026 | Kazakouski, Valery 2575 | Oleksiyenko, Mykhaylo 2569 | ½-½ | B31 Defensa Siciliana: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | Icelandic team chess championship premier league | 38 | Ver |
| 7 mar 2026 | Oleksiyenko, Mykhaylo 2569 | Santos Latasa, Jaime 2618 | ½-½ | B90 Defensa Siciliana: Najdorf Variation | Icelandic team chess championship premier league | 30 | Ver |
| 7 mar 2026 | Stefansson, Vignir Vatnar 2511 | Oleksiyenko, Mykhaylo 2569 | ½-½ | E01 Apertura Catalana: Open Defense | Icelandic team chess championship premier league | 35 | Ver |
| 5 mar 2026 | Oleksiyenko, Mykhaylo 2569 | Wadsworth, Matthew J 2522 | ½-½ | C01 Defensa Francesa: Exchange Variation | Icelandic team chess championship premier league | 103 | Ver |
| 23 dic 2025 | Oleksiyenko, Mykhaylo 2569 | Herasymenko, Maksym 2025 | ½-½ | B10 Defensa Caro-Kann: Two Knights Attack | Ukrainian Men's Chess Championship 2025 | Rapid | 22 | Ver |
| 23 dic 2025 | Mukha, Mykola 2149 | Oleksiyenko, Mykhaylo 2569 | 0-1 | A07 Ataque Indio de Rey: Pachman System | Ukrainian Men's Chess Championship 2025 | Rapid | 40 | Ver |
| 27 nov 2025 | Petriashvili, Nikoloz 2346 | Oleksiyenko, Mykhaylo 2503 | 1-0 | A06 Ataque Nimzo-Larsen: Classical Variation | Jerusalem Open 2025 | 37 | Ver |
| 27 nov 2025 | Oleksiyenko, Mykhaylo 2503 | Vagman, Roy 2190 | 1-0 | B54 Defensa Siciliana: Prins Variation | Jerusalem Open 2025 | 39 | Ver |
| 26 nov 2025 | Oleksiyenko, Mykhaylo 2503 | Golberg, Igor 2165 | ½-½ | C07 Defensa Francesa: Tarrasch Variation, Open System, Euwe-Keres Line | Jerusalem Open 2025 | 16 | Ver |
| 14 nov 2025 | Oleksiyenko, Mykhaylo 2569 | Donchenko, Alexander 2643 | 0-1 | B90 Defensa Siciliana: Najdorf Variation | Icelandic team chess championship premier league | 82 | Ver |