| Oct 12, 2025 | Dissanayake | 1–0 | Mykhnenko | Round 9: Dissanayake, Sathsara - Mykhnenko, Marijka | Ruy Lopez: Berlin Defense, Improved Steinitz Defense | |
| Oct 12, 2025 | Mykhnenko | 0–1 | Chan | Round 8: Mykhnenko, Marijka - Chan, Hannah | Philidor Defense | |
| Oct 12, 2025 | Mykhnenko | 0–1 | Gururaj | Round 6: Mykhnenko, Marijka - Gururaj, Rithwik | Sicilian Defense: Modern Variations | |
| Oct 11, 2025 | Thomas | 1–0 | Mykhnenko | Round 5: Thomas, James - Mykhnenko, Marijka | Bird Opening: Dutch Variation | |
| Oct 11, 2025 | Hunt | 1–0 | Mykhnenko | Round 4: Hunt, Angharad - Mykhnenko, Marijka | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Oct 11, 2025 | Mykhnenko | 0–1 | Kitaev | Round 3: Mykhnenko, Marijka - Kitaev, Daniel | Sicilian Defense: Closed, Traditional | |
| Oct 11, 2025 | Mottengad | 0–1 | Mykhnenko | Round 2: Mottengad, Nyo - Mykhnenko, Marijka | Slav Defense: Three Knights Variation | |
| Oct 11, 2025 | Mykhnenko | 0–1 | Zadvorny | Round 1: Mykhnenko, Marijka - Zadvorny, Roman | Italian Game: Two Knights Defense | |
| Sep 21, 2024 | Kitaev | 1–0 | Mykhnenko | 2024 UK Chess Challenge Terafinal Challengers U18 | Scotch Game | |
| Feb 10, 2024 | Pal | 1–0 | Mykhnenko | 4NCL Division Two | English Opening: King's English Variation, Reversed Sicilian | |
| Oct 13, 2024 | Mykhnenko | 0–1 | Lutsko | Round 8: Mykhnenko, Marijka - Lutsko, Artem | Sicilian Defense: Closed | |
| Oct 13, 2024 | Mykhnenko | 0–1 | Shidlagatta | Round 10: Mykhnenko, Marijka - Shidlagatta, Anirudh | French Defense: Exchange Variation | |
| Oct 13, 2024 | Dupuis | 1–0 | Mykhnenko | Round 7: Dupuis, Denis K - Mykhnenko, Marijka | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| Oct 13, 2024 | Adams | 1–0 | Mykhnenko | Round 9: Adams, Henry - Mykhnenko, Marijka | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Oct 13, 2024 | Madhavan | 1–0 | Mykhnenko | Round 11: Madhavan, Sanjith - Mykhnenko, Marijka | Four Knights Game | |
| Oct 12, 2024 | Mykhnenko | 0–1 | Grigoryan | Round 1: Mykhnenko, Marijka - Grigoryan, Suren | Sicilian Defense: Closed | |
| Oct 12, 2024 | Mykhnenko | 0–1 | Sivanandan | Round 2: Mykhnenko, Marijka - Sivanandan, Bodhana | Caro-Kann Defense: Exchange Variation | |
| Oct 12, 2024 | Mykhnenko | 0–1 | Adams | Round 4: Mykhnenko, Marijka - Adams, George | Caro-Kann Defense: Exchange Variation | |
| Oct 12, 2024 | Mykhnenko | 0–1 | Arora | Round 6: Mykhnenko, Marijka - Arora, Tashika | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| Oct 12, 2024 | Hobson | 1–0 | Mykhnenko | Round 3: Hobson, Kenneth - Mykhnenko, Marijka | Italian Game: Giuoco Piano | |
| Oct 12, 2024 | Latypova | 1–0 | Mykhnenko | Round 5: Latypova, Olga L - Mykhnenko, Marijka | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Nov 13, 2021 | Anand | 1–0 | Mykhnenko | British Junior Rapidplay: Girls Under 12 | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Nov 13, 2021 | Mouskos | 0–1 | Mykhnenko | British Junior Rapidplay: Girls Under 12 | Scotch Game: Schmidt Variation | |
| — | Mykhnenko | 0–1 | Spirling | British Junior Rapidplay: Girls Under 12 | Scandinavian Defense: Valencian Variation | |
| — | Mykhnenko | ½–½ | Anbalagan | British Junior Rapidplay: Girls Under 12 | Sicilian Defense: Kramnik Variation | |
| — | Mykhnenko | 0–1 | Dicen | British Junior Blitz: Girls Under 12 | French Defense: Advance Variation, Milner-Barry Gambit | |
| — | Mykhnenko | 0–1 | Chan | British Junior Blitz: Girls Under 12 | Italian Game: Giuoco Pianissimo | |
| — | Mykhnenko | 1–0 | Hunt | British Junior Blitz: Girls Under 12 | French Defense: Advance Variation, Milner-Barry Gambit | |
| — | Mykhnenko | ½–½ | Spirling | British Junior Blitz: Girls Under 12 | Scandinavian Defense: Valencian Variation | |
| — | Mykhnenko | 0–1 | Oh | British Junior Blitz: Girls Under 12 | Sicilian Defense: Kramnik Variation | |
| — | Mykhnenko | ½–½ | Bhatia | British Junior Rapidplay: Girls Under 12 | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| — | Mykhnenko | 0–1 | McCarthy | 4NCL Division 2 2023-2024 | French Defense: Exchange Variation | |
| — | Barbier-Ramaiah | 1–0 | Mykhnenko | British Junior Blitz: Girls Under 12 | Scotch Game: Lolli Variation | |
| — | Pitts | 0–1 | Mykhnenko | British Junior Blitz: Girls Under 12 | Ruy Lopez: Steinitz Defense | |
| — | Catabay | 1–0 | Mykhnenko | British Junior Blitz: Girls Under 12 | King's Gambit | |
| — | Groot Wassink | 1–0 | Mykhnenko | British Junior Blitz: Girls Under 12 | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| — | Groot Wassink | 1–0 | Mykhnenko | British Junior Rapidplay: Girls Under 12 | Italian Game: Classical Variation, Greco Gambit, Traditional Line | |
| — | Barbier-Ramaiah | 1–0 | Mykhnenko | British Junior Rapidplay: Girls Under 12 | Scotch Game | |
| — | Barbier-Ramaiah | 1–0 | Mykhnenko | British Junior Rapidplay: Girls Under 12 | Indian Defense | |
