| Dec 29, 2025 | Wiecek | 1–0 | Haidenko | Round 8: Wiecek, Pawel - Haidenko, Mykola | Catalan Opening: Open Defense | |
| Dec 29, 2025 | Haidenko | ½–½ | Zeman | Round 7: Haidenko, Mykola - Zeman, Vojtech | Rapport-Jobava System | |
| Dec 29, 2025 | Munkhbayar | 0–1 | Haidenko | Round 6: Munkhbayar, Unurbayar - Haidenko, Mykola | Sicilian Defense: Taimanov Variation, Szén Variation | |
| Dec 28, 2025 | Haidenko | 1–0 | Vanicek | Round 9: Haidenko, Mykola - Vanicek, Vojtech | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Dec 28, 2025 | Haidenko | 0–1 | Vrana | Round 8: Haidenko, Mykola - Vrana, Frantisek | Scandinavian Defense: Main Line | |
| Dec 28, 2025 | Prosecky | 0–1 | Haidenko | Round 6: Prosecky, Mojmir - Haidenko, Mykola | Caro-Kann Defense: Tartakower Variation | |
| Dec 28, 2025 | Haidenko | 1–0 | Radej | Round 5: Haidenko, Mykola - Radej, Alexandr | Caro-Kann Defense: Exchange Variation | |
| Dec 28, 2025 | Gnida | 1–0 | Haidenko | Round 4: Gnida, Patrik - Haidenko, Mykola | King's Indian Attack | |
| Dec 28, 2025 | Haidenko | 1–0 | Vinklarek | Round 3: Haidenko, Mykola - Vinklarek, Robert | Zukertort Opening: Reversed Grünfeld | |
| Dec 28, 2025 | Sebesta | 0–1 | Haidenko | Round 2: Sebesta, Adam - Haidenko, Mykola | Hungarian Opening: Indian Defense | |
| Dec 28, 2025 | Haidenko | 1–0 | Bilek | Round 1: Haidenko, Mykola - Bilek, Marek | English Opening: King's English Variation | |
| Dec 27, 2025 | Haidenko | 1–0 | Walak | Round 5: Haidenko, Mykola - Walak, Jiri | Sicilian Defense: Classical Variation | |
| Dec 27, 2025 | Sebesta | 0–1 | Haidenko | Round 4: Sebesta, Adam - Haidenko, Mykola | King's Indian Attack | |
| Dec 27, 2025 | Haidenko | 0–1 | Gresek | Round 3: Haidenko, Mykola - Gresek, Oskar | Scandinavian Defense: Valencian Variation, Main Line | |
| Dec 26, 2025 | Vokurka | 1–0 | Haidenko | Round 2: Vokurka, Vilem - Haidenko, Mykola | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |
| Dec 26, 2025 | Haidenko | 1–0 | Sauman | Round 1: Haidenko, Mykola - Sauman, Petr | Sicilian Defense: Wing Gambit | |
| Nov 6, 2025 | Cimburek | 1–0 | Haidenko | Round 7: Cimburek, Jan - Haidenko, Mykola | English Opening: Anglo-Grünfeld Defense | |
| Jul 18, 2025 | Haidenko | 0–1 | Rabatin | Round 2: Haidenko, Mykola - Rabatin, Jakub | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Mar 15, 2025 | Sadil | 1–0 | Haidenko | new tournament description | Caro-Kann Defense: Advance Variation, Short Variation | |
| Mar 14, 2025 | Broz | ½–½ | Haidenko | new tournament description | Sicilian Defense: Kramnik Variation | |
| Mar 13, 2025 | Haidenko | 1–0 | Gernert | new tournament description | King's Indian Defense: Makogonov Variation | |
| Mar 12, 2025 | Brychta | 0–1 | Haidenko | new tournament description | Dutch Defense: Stonewall Variation | |
| Mar 11, 2025 | Haidenko | ½–½ | Bobrakov-Timoskin | new tournament description | French Defense: Rubinstein Variation | |
| Mar 10, 2025 | Haidenko | ½–½ | Matejovsky | new tournament description | Rapport-Jobava System | |
| Mar 10, 2025 | Zeman | ½–½ | Haidenko | new tournament description | Queen's Gambit Accepted: Old Variation | |
| Mar 8, 2025 | Brychta | 0–1 | Haidenko | new tournament description | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Mar 16, 2024 | Mlynek | 1–0 | Haidenko | MČR mládeže 2024 - FIDE OPEN | Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line | |
| Mar 15, 2024 | Haidenko | 1–0 | Brabencova | MČR mládeže 2024 - FIDE OPEN | Saragossa Opening | |
| Mar 14, 2024 | Babicky | 0–1 | Haidenko | MČR mládeže 2024 - FIDE OPEN | Sicilian Defense: Closed | |
| Mar 13, 2024 | Haidenko | 0–1 | Martinkovic | MČR mládeže 2024 - FIDE OPEN | English Opening: Symmetrical Variation | |
| Mar 12, 2024 | Stary | ½–½ | Haidenko | MČR mládeže 2024 - FIDE OPEN | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| Mar 11, 2024 | Haidenko | ½–½ | Vondra | MČR mládeže 2024 - FIDE OPEN | English Opening: Symmetrical Variation | |
| Mar 11, 2024 | Ulrich | 0–1 | Haidenko | MČR mládeže 2024 - FIDE OPEN | Caro-Kann Defense: Hillbilly Attack | |
| Mar 10, 2024 | Haidenko | 0–1 | Brozova | MČR mládeže 2024 - FIDE OPEN | Saragossa Opening | |
| Mar 9, 2024 | Jonas | 0–1 | Haidenko | MČR mládeže 2024 - FIDE OPEN | Caro-Kann Defense: Maróczy Variation | |
| Aug 16, 2024 | Haidenko | 0–1 | Chrz | Round 4: Haidenko, Mykola - Chrz, Pavel | Benko Gambit: Zaitsev System | |
| Aug 16, 2024 | Haidenko | 0–1 | Bazantova | Round 8: Haidenko, Mykola - Bazantova, Marie | Bogo-Indian Defense: Nimzowitsch Variation | |
| Aug 16, 2024 | Slavinsky | ½–½ | Haidenko | Round 2: Slavinsky, Rostislav - Haidenko, Mykola | Réti Opening: Réti Accepted | |
| Aug 16, 2024 | Polach | ½–½ | Haidenko | Round 3: Polach, Ladislav - Haidenko, Mykola | Queen's Pawn Game: Torre Attack | |
| — | Haidenko | 1–0 | Flidr | new tournament description | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| — | Haidenko | 0–1 | Ondracek | Round 2: Haidenko, Mykola - Ondracek, Daniel | Slav Indian | |
| — | Haidenko | 1–0 | Kraus | Round 4: Haidenko, Mykola - Kraus, Petr | Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch | |
| — | Haidenko | 0–1 | Koupil | Round 6: Haidenko, Mykola - Koupil, Stepan | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| — | Haidenko | 1–0 | Tschulik | Round 8: Haidenko, Mykola - Tschulik, Daniel | Scotch Game: Lolli Variation | |
| — | Haidenko | 1–0 | Chmelar | Round 4: Haidenko, Mykola - Chmelar, Vitezslav | Rapport-Jobava System | |
| — | Haidenko | ½–½ | Chmiel | Round 6: Haidenko, Mykola - Chmiel, Kuba | Caro-Kann Defense: Panov Attack, Modern Defense | |
| — | Haidenko | 0–1 | Walder | Round 7: Haidenko, Mykola - Walder, Hugo | Slav Defense | |
| — | Haidenko | 1–0 | Masek | Round 9: Haidenko, Mykola - Masek, Jan | Dutch Defense: Staunton Gambit | |
| — | Pluhackova | 0–1 | Haidenko | Round 1: Pluhackova, Eliska - Haidenko, Mykola | Caro-Kann Defense | |
| — | Prosecky | ½–½ | Haidenko | Round 3: Prosecky, Mojmir - Haidenko, Mykola | Sicilian Defense: Alapin Variation | |
| — | Kvapilova | 1–0 | Haidenko | Round 5: Kvapilova, Lucie - Haidenko, Mykola | Sicilian Defense: Kan Variation, Knight Variation | |
| — | La Porta | 0–1 | Haidenko | Round 7: La Porta, Alex - Haidenko, Mykola | Sicilian Defense: Closed | |
| — | Sara | ½–½ | Haidenko | Round 9: Sara, David - Haidenko, Mykola | Sicilian Defense: Mengarini Variation | |
| — | Grepl | ½–½ | Haidenko | Round 3: Grepl, Lukas - Haidenko, Mykola | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| — | Mrazek | ½–½ | Haidenko | Round 5: Mrazek, Roman - Haidenko, Mykola | Queen's Pawn Game: Colle System | |
| — | Vavrinkova | 0–1 | Haidenko | Round 8: Vavrinkova, Eliska - Haidenko, Mykola | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |