| Apr 12, 2026 | Matviienko | 0–1 | Rose | Round 9: Matviienko, Mykhailo - Rose, Daniel | English Opening: Agincourt Defense | |
| Apr 11, 2026 | Niehaus | ½–½ | Matviienko | Round 8: Niehaus, Frank - Matviienko, Mykhailo | French Defense: Winawer Variation, Poisoned Pawn Variation, Main Line | |
| Apr 10, 2026 | Hesse | 1–0 | Matviienko | Round 7: Hesse, Henrik - Matviienko, Mykhailo | Modern Defense: Two Knights Variation | |
| Apr 9, 2026 | Matviienko | ½–½ | Lagunow | Round 6: Matviienko, Mykhailo - Lagunow, Alexander | Réti Opening: Réti Accepted | |
| Apr 8, 2026 | Matviienko | ½–½ | Jahnz | Round 5: Matviienko, Mykhailo - Jahnz, Fabian | Réti Opening: Anglo-Slav Variation, New York System | |
| Apr 7, 2026 | Foerster | ½–½ | Matviienko | Round 4: Foerster, Jonas - Matviienko, Mykhailo | King's Indian Defense: Fianchetto Variation, Panno Variation | |
| Apr 6, 2026 | Matviienko | 1–0 | Pererva | Round 3: Matviienko, Mykhailo - Pererva, Viktor | Zukertort Opening: Sicilian Invitation | |
| Apr 4, 2026 | Matviienko | 1–0 | Dimitrijeski | Round 1: Matviienko, Mykhailo - Dimitrijeski, Kristian | Réti Opening: Anglo-Slav Variation, New York System | |
| Apr 4, 2026 | Vavulin | 1–0 | Matviienko | Round 2: Vavulin, Maxim - Matviienko, Mykhailo | French Defense: Winawer Variation, Delayed Exchange Variation | |
| Nov 16, 2025 | Heinrich | 1–0 | Matviienko | Round 11: Heinrich, John - Matviienko, Mykhailo | English Opening: Anglo-Indian Defense, Queen's Indian Formation | |
| Nov 16, 2025 | Matviienko | ½–½ | Fromm | Round 10: Matviienko, Mykhailo - Fromm, Marius | English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto | |
| Nov 15, 2025 | Matviienko | ½–½ | Schmidek | Round 7: Matviienko, Mykhailo - Schmidek, Emil | English Opening: Neo-Catalan | |
| Nov 15, 2025 | Gholami Orimi | 1–0 | Matviienko | 3. Berlin U25-Open Rapid | King's Indian Defense: Fianchetto Variation, Classical Main Line | |
| Nov 15, 2025 | Gholami Orimi | 1–0 | Matviienko | 3. Berlin U25-Open Rapid | King's Indian Defense: Fianchetto Variation, Classical Main Line | |
| Apr 27, 2025 | Matviienko | 0–1 | Richter | Round 9: Matviienko, Mykhailo - Richter, Michael | English Opening: Neo-Catalan Declined | |
| Apr 26, 2025 | Berger | 1–0 | Matviienko | Round 8: Berger, Steve - Matviienko, Mykhailo | Alekhine Defense: Modern Variation, Schmid Variation | |
| Apr 25, 2025 | Buyukasik | 1–0 | Matviienko | Round 7: Buyukasik, Diyap - Matviienko, Mykhailo | English Opening: Symmetrical Variation, Hedgehog Defense | |
| Apr 24, 2025 | Matviienko | 1–0 | Poltorak | Round 6: Matviienko, Mykhailo - Poltorak, Sebastian | English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | |
| Apr 23, 2025 | Matviienko | 1–0 | Pererva | Round 5: Matviienko, Mykhailo - Pererva, Viktor | English Opening: Agincourt Defense | |
| Apr 22, 2025 | Jahnz | 1–0 | Matviienko | Round 4: Jahnz, Laurin - Matviienko, Mykhailo | French Defense: MacCutcheon Variation, Lasker Variation | |
| Apr 21, 2025 | Verbitsky | 0–1 | Matviienko | Round 3: Verbitsky, Jaroslaw - Matviienko, Mykhailo | French Defense: Exchange Variation | |
| Apr 20, 2025 | Matviienko | 0–1 | Florstedt | Round 2: Matviienko, Mykhailo - Florstedt, Johannes | East Indian Defense | |
| Apr 19, 2025 | Krefenstein | 0–1 | Matviienko | Round 1: Krefenstein, Sergej - Matviienko, Mykhailo | French Defense: Advance Variation, Main Line | |
| Oct 26, 2024 | Matviienko | 0–1 | Sieber | Round 8: Matviienko, Mykhailo - Sieber, Fiona | English Opening: King's English Variation | |
| Oct 24, 2024 | Kanov | 1–0 | Matviienko | Round 5: Kanov, Nikola - Matviienko, Mykhailo | English Opening: King's English Variation | |
| Oct 22, 2024 | Prokofiev | 1–0 | Matviienko | Round 3: Prokofiev, Valentyn - Matviienko, Mykhailo | King's Indian Defense: Orthodox Variation | |
| Sep 30, 2023 | Matviienko | 0–1 | Borrmann | 22nd European Youth Blitz Championship 2023 - O-16 | English Opening: Anglo-Indian Defense | |
| Sep 30, 2023 | Borrmann | 1–0 | Matviienko | 22nd European Youth Blitz Championship 2023 - O-16 | French Defense: Advance Variation, Milner-Barry Gambit, Hector Variation | |
| Aug 11, 2021 | Matviienko | 1–0 | Tieppo | World Youth Cup 2021 O14-G14 - Open 14 | Italian Game: Giuoco Pianissimo, Normal | |
| Aug 11, 2021 | Matviienko | 0–1 | Zhakshylykov | World Youth Cup 2021 O14-G14 - Open 14 | English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation | |
| Aug 11, 2021 | Matviienko | 1–0 | Taspinar | World Youth Cup 2021 O14-G14 - Open 14 | English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense | |
| Aug 11, 2021 | Matviienko | 0–1 | Mamedov | World Youth Cup 2021 O14-G14 - Open 14 | English Opening: Caro-Kann Defensive System | |
| Aug 11, 2021 | Matviienko | 0–1 | Vuppala | World Youth Cup 2021 O14-G14 - Open 14 | English Opening: King's English Variation, Two Knights Variation | |
| Aug 11, 2021 | Badieh | 0–1 | Matviienko | World Youth Cup 2021 O14-G14 - Open 14 | King's Indian Defense: Smyslov Variation | |
| Aug 11, 2021 | Labruyere | 0–1 | Matviienko | World Youth Cup 2021 O14-G14 - Open 14 | Dutch Defense | |
| Aug 11, 2021 | Dang | 1–0 | Matviienko | World Youth Cup 2021 O14-G14 - Open 14 | King's Indian Defense: Orthodox Variation, Bayonet Attack | |
| Aug 11, 2021 | Sarda | 1–0 | Matviienko | World Youth Cup 2021 O14-G14 - Open 14 | London System | |
