| Jun 24, 2026 | Dezinsky | 0–1 | Kozusnik | Round 6: Dezinsky, Filip - Kozusnik, Jan | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jun 23, 2026 | Kozusnik | ½–½ | Mojzisova | Round 5: Kozusnik, Jan - Mojzisova, Barbora | Caro-Kann Defense: Tartakower Variation | |
| Jun 23, 2026 | Kozusnik | 0–1 | Fekar | Round 3: Kozusnik, Jan - Fekar, Tomas | Sicilian Defense: Najdorf Variation, Opocensky Variation | |
| Jun 23, 2026 | Kozusnik | 1–0 | Kupka | Round 1: Kozusnik, Jan - Kupka, Antonin | Sicilian Defense: Open | |
| Mar 14, 2026 | Kozusnik | 1–0 | Keprt | MCR 2026 | Caro-Kann Defense: Tartakower Variation | |
| Mar 13, 2026 | Hokr | 1–0 | Kozusnik | MCR 2026 | Sicilian Defense: Grand Prix Attack | |
| Mar 12, 2026 | Martinek | 0–1 | Kozusnik | MCR 2026 | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Mar 11, 2026 | Kozusnik | 0–1 | Walder | MCR 2026 | Ruy Lopez: Closed, Chigorin Defense | |
| Mar 10, 2026 | Kozusnik | 0–1 | Gernert | MCR 2026 | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Mar 9, 2026 | Havlik | 0–1 | Kozusnik | MCR 2026 | Sicilian Defense: Taimanov Variation | |
| Mar 9, 2026 | Kozusnik | 0–1 | Fadrny | MCR 2026 | French Defense: Winawer Variation, Retreat Variation | |
| Mar 8, 2026 | Jordan | 1–0 | Kozusnik | MCR 2026 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Mar 7, 2026 | Kozusnik | 0–1 | Munkhbayar | MCR 2026 | Caro-Kann Defense: Forgacs Variation | |
| Mar 15, 2025 | Fadrny | * | Kozusnik | MÄR 2025 H12 | Queen's Gambit Accepted: Old Variation | |
| Mar 14, 2025 | Kozusnik | 1–0 | Havlik | MÄR 2025 H12 | French Defense: Steinitz Variation | |
| Mar 13, 2025 | Kozusnik | 0–1 | Trejbal | MÄR 2025 H12 | Italian Game: Scotch Gambit, Max Lange Attack | |
| Mar 12, 2025 | Velim | 1–0 | Kozusnik | MÄR 2025 H12 | Nimzo-Larsen Attack: Classical Variation | |
| Mar 11, 2025 | Temirbek | 0–1 | Kozusnik | MÄR 2025 H12 | Sicilian Defense: Four Knights Variation | |
| Mar 10, 2025 | Kozusnik | 1–0 | Mauric | MÄR 2025 H12 | Sicilian Defense: Taimanov Variation | |
| Mar 10, 2025 | Berdnikov | 0–1 | Kozusnik | MÄR 2025 H12 | Sicilian Defense: Smith-Morra Gambit Accepted, Classical Formation | |
| Mar 9, 2025 | Kozusnik | 0–1 | Kolar | MÄR 2025 H12 | Sicilian Defense: Dragon Variation, Yugoslav Attack | |
| Mar 8, 2025 | Zvolanek | 0–1 | Kozusnik | MÄR 2025 H12 | Sicilian Defense: Dragon Variation, Yugoslav Attack | |
| Jan 30, 2025 | Kozusnik | 0–1 | Macharacek | Round 2: Kozusnik, Jan - Macharacek, Jakub | Scotch Game: Scotch Gambit, London Defense | |
| Jan 30, 2025 | Kozusnik | 1–0 | Martinkovicova | Round 4: Kozusnik, Jan - Martinkovicova, Nela | Petrov's Defense: Stafford Gambit | |
| Jan 30, 2025 | Kozusnik | 0–1 | Myronova | Round 6: Kozusnik, Jan - Myronova, Sofia | Sicilian Defense: Dragon Variation, Modern Bc4 Variation | |
| Jan 30, 2025 | Kozusnik | 1–0 | Krivka | Round 8: Kozusnik, Jan - Krivka, Lukas | Caro-Kann Defense: Exchange Variation | |
| Jan 30, 2025 | Kozusnik | 0–1 | Lutskiy | Round 10: Kozusnik, Jan - Lutskiy, Mikhail | Sicilian Defense: Dragon Variation, Modern Bc4 Variation | |
| Jan 30, 2025 | Kozusnik | 0–1 | Stepnicka | Round 13: Kozusnik, Jan - Stepnicka, Filip | Italian Game: Scotch Gambit, Max Lange Attack | |
| Jan 30, 2025 | Lutskiy | 1–0 | Kozusnik | Round 7: Lutskiy, Mikhail - Kozusnik, Jan | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jan 30, 2025 | Berdnikov | 0–1 | Kozusnik | Round 1: Berdnikov, Tsyren - Kozusnik, Jan | Sicilian Defense: Smith-Morra Gambit Accepted | |
| Jan 30, 2025 | Chmelova | 0–1 | Kozusnik | Round 3: Chmelova, Klara - Kozusnik, Jan | Sicilian Defense: Dragon Variation, Modern Bc4 Variation | |
| Jan 30, 2025 | Kusova | 0–1 | Kozusnik | Round 5: Kusova, Nikola - Kozusnik, Jan | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| Jan 30, 2025 | Prokopchuk | 1–0 | Kozusnik | Round 7: Prokopchuk, Oleksandr - Kozusnik, Jan | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jan 30, 2025 | Litos | 0–1 | Kozusnik | Round 9: Litos, Ondrej - Kozusnik, Jan | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Jan 30, 2025 | Tomankova | 0–1 | Kozusnik | Round 11: Tomankova, Lucie - Kozusnik, Jan | Sicilian Defense: Alapin Variation | |
| Jan 30, 2025 | Gernert | ½–½ | Kozusnik | Round 12: Gernert, Tomas - Kozusnik, Jan | ? | |
| Jan 29, 2025 | Kozusnik | ½–½ | Kroulik | Round 5: Kozusnik, Jan - Kroulik, Stepan | Sicilian Defense: Kan Variation, Modern Variation | |
| Jan 29, 2025 | Kozusnik | ½–½ | Vo | Round 6: Kozusnik, Jan - Vo, Daniel | Sicilian Defense: French Variation | |
| Jan 28, 2025 | Kozusnik | 0–1 | Zeman | Round 3: Kozusnik, Jan - Zeman, Jonas | Sicilian Defense: Hyperaccelerated Fianchetto | |
| Jan 28, 2025 | Dlouhy | 0–1 | Kozusnik | Round 4: Dlouhy, Martin - Kozusnik, Jan | Queen's Pawn Game | |
| Jan 27, 2025 | Kozusnik | 1–0 | Stepnicka | Round 1: Kozusnik, Jan - Stepnicka, Filip | Italian Game: Scotch Gambit, Max Lange Attack | |
| Jan 27, 2025 | Krivka | ½–½ | Kozusnik | Round 2: Krivka, Lukas - Kozusnik, Jan | Queen's Gambit Accepted: Rosenthal Variation | |
| Mar 18, 2023 | Kozusnik | 1–0 | Kroulik | h10 | Sicilian Defense: French Variation | |
| Mar 17, 2023 | Skoloud | 1–0 | Kozusnik | h10 | King's Gambit Accepted: Modern Defense | |
| Mar 16, 2023 | Kozusnik | 0–1 | Filindash | H10 | French Defense: Burn Variation | |
| Mar 15, 2023 | Kozusnik | 1–0 | Lutskiy | H10 | French Defense: Classical Variation, Swiss Variation | |
| Mar 14, 2023 | Kolar | 0–1 | Kozusnik | H10 | Italian Game: Two Knights Defense | |
| Mar 13, 2023 | Kozusnik | 1–0 | Trejbal | H10 | Italian Game: Classical Variation, Giuoco Pianissimo, with h6 | |
| Mar 13, 2023 | Bucek | 0–1 | Kozusnik | H10 | Scandinavian Defense: Modern Variation | |
| Mar 12, 2023 | Kozusnik | 1–0 | Broz | H10 | Scotch Game: Haxo Gambit | |
| Mar 11, 2023 | Galia | 1–0 | Kozusnik | h10 | Scandinavian Defense: Modern Variation, Gipslis Variation | |
| — | Kozusnik | 0–1 | Hamernikova | EUYCC 2024 - U12 | Scandinavian Defense: Marshall Variation | |
| — | Kozusnik | 1–0 | Tanase | EUYCC 2025 - U12 | Sicilian Defense: Sozin Attack, Flank Variation | |
| — | Kozusnik | 1–0 | Strekalovs | EUYCC 2025 - U12 | Sicilian Defense: O'Kelly Variation, Normal System | |
| — | Kozusnik | 0–1 | Lazars | EUYCC 2025 - U12 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| — | Kozusnik | 0–1 | Slusarczyk | EUYCC 2025 - U12 | Four Knights Game: Italian Variation, Noa Gambit | |
| — | Sevcikova | 0–1 | Kozusnik | EUYCC 2025 - U12 | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| — | Svabova | 0–1 | Kozusnik | EUYCC 2025 - U12 | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| — | Rzadkowska | 1–0 | Kozusnik | EUYCC 2025 - U12 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| — | Fei | 0–1 | Kozusnik | EUYCC 2025 - U12 | Sicilian Defense: Alapin Variation | |