| Jun 30, 2026 | Hak | 0–1 | Motyl | FIDE OPEN QCC | ? | |
| Nov 22, 2025 | Martirosyan | ½–½ | Hak | Polofinale MCR junioru 2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Nov 21, 2025 | Hak | 1–0 | Ocelak | Polofinale MCR junioru 2025 | King's Indian Defense: Orthodox Variation | |
| Nov 20, 2025 | Andrle | ½–½ | Hak | Polofinale MCR junioru 2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Nov 19, 2025 | Hak | 1–0 | Novotny | Polofinale MCR junioru 2025 | Queen's Gambit Declined: Three Knights Variation | |
| Nov 18, 2025 | Bezdek | 1–0 | Hak | Polofinale MCR junioru 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Nov 18, 2025 | Hak | 1–0 | Stein | Polofinale MCR junioru 2025 | Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch | |
| Nov 17, 2025 | Pressler | 1–0 | Hak | Polofinale MCR junioru 2025 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Nov 16, 2025 | Steinbauer | 0–1 | Hak | Polofinale MCR junioru 2025 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Nov 16, 2025 | Hak | 1–0 | Vysinsky | Polofinale MCR junioru 2025 | King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line | |
| Sep 21, 2025 | Soucek | 0–1 | Hak | MČR juniorů a juniorek v rapid šachu 2025 | Trompowsky Attack: Classical Defense, Big Center Variation | |
| Sep 20, 2025 | Hak | 1–0 | Stary | MČR juniorů a juniorek v rapid šachu 2025 | Dutch Defense: Raphael Variation | |
| Sep 20, 2025 | Jun | 1–0 | Hak | MČR juniorů a juniorek v rapid šachu 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Sep 20, 2025 | Hak | 1–0 | Mikhno | MČR juniorů a juniorek v rapid šachu 2025 | Queen's Indian Defense: Fianchetto Variation, Traditional Line | |
| Sep 20, 2025 | Boff | 0–1 | Hak | MČR juniorů a juniorek v rapid šachu 2025 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Sep 20, 2025 | Hak | 1–0 | Nagyova | MČR juniorů a juniorek v rapid šachu 2025 | English Opening: King's English Variation, Two Knights Variation | |
| Sep 19, 2025 | Ocelak | ½–½ | Hak | MČR juniorů a juniorek v rapid šachu 2025 | Nimzo-Larsen Attack: Modern Variation | |
| Sep 19, 2025 | Hak | 1–0 | Skypala | MČR juniorů a juniorek v rapid šachu 2025 | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Sep 19, 2025 | Hak | 1–0 | Winter | MČR juniorů a juniorek v rapid šachu 2025 | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Jul 20, 2025 | Hak | 0–1 | Safarik | Round 7: Hak, David - Safarik, Jakub | Bogo-Indian Defense: Grünfeld Variation | |
| Jul 19, 2025 | Hak | 0–1 | Simacek | Round 5: Hak, David - Simacek, Pavel | Benoni Defense: Classical Variation | |
| Jul 19, 2025 | Hak | 1–0 | Polak | Round 4: Hak, David - Polak, Michal | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 18, 2025 | Bombek | 0–1 | Hak | Round 3: Bombek, Peter - Hak, David | Sicilian Defense: Alapin Variation | |
| Jul 18, 2025 | Hak | 1–0 | Jursa | Round 2: Hak, David - Jursa, Branislav | Queen's Indian Defense: Classical Variation, Traditional Variation, Nimzowitsch Line | |
| Jul 17, 2025 | Muller | 0–1 | Hak | Round 1: Muller, Petr - Hak, David | Rapport-Jobava System | |
| Jul 6, 2025 | Haba | 1–0 | Hak | im | King's Indian Defense: Semi-Averbakh System | |
| Jul 5, 2025 | Hak | 0–1 | Apoorv Kamble | im | English Opening: Agincourt Defense, Keres Defense | |
| Jul 4, 2025 | Lee | ½–½ | Hak | im | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | |
| Jul 3, 2025 | Hak | 0–1 | Audi Ameya | im | Semi-Slav Defense | |
| Jul 1, 2025 | Marakovits | ½–½ | Hak | im | King's Indian Defense: Semi-Averbakh System | |
| Jun 30, 2025 | Hak | 1–0 | Topencik | im | Queen's Gambit Accepted: Rosenthal Variation | |
| Jun 29, 2025 | Ocelak | 0–1 | Hak | im | Indian Defense: King's Indian Variation, Fianchetto Variation | |
| Jun 28, 2025 | Hak | 1–0 | Rasik | im | King's Indian Defense: Orthodox Variation | |
| Jun 25, 2025 | Hak | 1–0 | Lang | im | King's Indian Defense: Orthodox Variation, Classical System, Neo-Classical Line | |
| May 10, 2025 | Kroulik | 0–1 | Hak | Round 13: Kroulik, Vaclav - Hak, David | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| May 10, 2025 | Hak | 0–1 | Soucek | Round 12: Hak, David - Soucek, Jan | Nimzo-Indian Defense: Rubinstein System, Taimanov Variation | |
| May 10, 2025 | Topencik | ½–½ | Hak | Round 11: Topencik, Bruno - Hak, David | Grünfeld Defense: Exchange Variation | |
| May 10, 2025 | Skalsky | 0–1 | Hak | Round 10: Skalsky, Alexandr - Hak, David | English Opening: Symmetrical Variation, Botvinnik System | |
| May 10, 2025 | Hak | 1–0 | Martianov | Round 9: Hak, David - Martianov, Andrey | Nimzo-Indian Defense: Reshevsky Variation | |
| May 10, 2025 | Hak | 1–0 | Hronek | Round 8: Hak, David - Hronek, Ondrej | Dutch Defense: Rubinstein Variation | |
| May 10, 2025 | Slusarczyk | 1–0 | Hak | Round 2: Slusarczyk, Anna - Hak, David | King's Indian Defense: Makogonov Variation | |
| May 10, 2025 | Hak | 1–0 | Asilkefeli | Round 1: Hak, David - Asilkefeli, Hasan | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| May 8, 2025 | Hak | 1–0 | Mrozowski | Round 5: Hak, David - Mrozowski, Patryk | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| May 7, 2025 | Buchcar | 0–1 | Hak | Round 4: Buchcar, Tomas - Hak, David | Grünfeld Defense: Russian Variation, Hungarian Variation | |
| May 7, 2025 | Hak | 1–0 | Kasperek | Round 3: Hak, David - Kasperek, Ryszard | Zukertort Opening: Nimzo-Larsen Variation | |
| May 6, 2025 | Hak | 1–0 | Borecky | Round 1: Hak, David - Borecky, Andrej | Queen's Gambit Declined: Harrwitz Attack, Orthodox Defense | |
| May 6, 2025 | Ondrusova | 0–1 | Hak | Round 2: Ondrusova, Miroslava - Hak, David | King's Indian Defense | |
| May 5, 2025 | Hak | 0–1 | Vojta | Round 9: Hak, David - Vojta, Jakub | Caro-Kann Defense: Classical Variation, Seirawan Variation | |
| May 5, 2025 | Varga | 0–1 | Hak | Round 8: Varga, Csaba Zoltan - Hak, David | Rapport-Jobava System | |
| May 5, 2025 | Hak | 1–0 | Winter | Round 7: Hak, David - Winter, Ondrej | Grünfeld Defense: Three Knights Variation | |
| May 5, 2025 | Jun | ½–½ | Hak | Round 6: Jun, Rudolf - Hak, David | Sicilian Defense: Old Sicilian | |
| Aug 31, 2024 | Hak | 0–1 | Karolczuk | EYCC 2024 - O18 | Indian Defense: Dzindzi-Indian Defense | |
| Aug 30, 2024 | Slagboom | ½–½ | Hak | EYCC 2024 - O18 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 29, 2024 | Hercegovac | 0–1 | Hak | EYCC 2024 - O18 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 28, 2024 | Hak | 0–1 | Malek | EYCC 2024 - O18 | Indian Defense: Anti-Nimzo-Indian | |
| Aug 26, 2024 | Hrbek | 1–0 | Hak | EYCC 2024 - O18 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Aug 25, 2024 | Hak | 1–0 | Pidluznij | EYCC 2024 - O18 | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| Aug 24, 2024 | Baranciuc | 0–1 | Hak | EYCC 2024 - O18 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Aug 20, 2024 | Hak | 1–0 | Mizzi | EYCC 2024 Blitz O18 | Queen's Gambit Accepted | |
| Aug 20, 2024 | Hak | 1–0 | Nedelcu | EYCC 2024 Blitz O18 | Tarrasch Defense: Classical Variation | |
| Aug 20, 2024 | Hak | 0–1 | Klimkowski | EYCC 2024 Blitz O18 | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Aug 20, 2024 | Hak | 0–1 | Pasti | EYCC 2024 Blitz O18 | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Aug 20, 2024 | Hak | 0–1 | Kutowski | EYCC 2024 Blitz O18 | Bogo-Indian Defense: Nimzowitsch Variation | |
| Aug 20, 2024 | Hak | 1–0 | Smeryk | EYCC 2024 Blitz O18 | Queen's Indian Defense: Kasparov Variation | |
| Aug 20, 2024 | Mizzi | 0–1 | Hak | EYCC 2024 Blitz O18 | Indian Defense: Przepiorka Variation | |
| Aug 20, 2024 | Nedelcu | 0–1 | Hak | EYCC 2024 Blitz O18 | Grünfeld Defense: Exchange Variation | |
| Aug 20, 2024 | Klimkowski | 1–0 | Hak | EYCC 2024 Blitz O18 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Aug 20, 2024 | Pasti | 1–0 | Hak | EYCC 2024 Blitz O18 | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| Aug 20, 2024 | Kutowski | 1–0 | Hak | EYCC 2024 Blitz O18 | Sicilian Defense: Old Sicilian | |
| Aug 20, 2024 | Smeryk | 1–0 | Hak | EYCC 2024 Blitz O18 | Nimzo-Larsen Attack: Modern Variation | |
| Aug 19, 2024 | Hak | 0–1 | Borrmann | EYCC 2024 Blitz O18 | Queen's Gambit Declined: Three Knights Variation | |
| Aug 19, 2024 | Borrmann | 1–0 | Hak | EYCC 2024 Blitz O18 | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Aug 18, 2024 | Iliev | 0–1 | Hak | EYCC 2024 Rapid O18 | English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | |
| Aug 17, 2024 | Hak | 0–1 | Klimkowski | EYCC 2024 Rapid O18 | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Aug 17, 2024 | Gregoric | 1–0 | Hak | EYCC 2024 Rapid O18 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 7, 2024 | Nagy | 1–0 | Hak | im | Sicilian Defense: French Variation | |
| Jul 6, 2024 | Hak | 0–1 | Otsuka | im | English Opening: Agincourt Defense | |
| Jul 5, 2024 | Rakshitta Ravi | ½–½ | Hak | im | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jul 4, 2024 | Hak | ½–½ | Mirzoev | im | French Defense: Burn Variation | |
| Jul 3, 2024 | Roshka | 1–0 | Hak | im | Sicilian Defense: McDonnell Attack, Tal Gambit | |
| Jul 2, 2024 | Hak | 1–0 | Marakovits | im | Italian Game: Classical Variation, Giuoco Pianissimo, Main Line | |
| Jul 2, 2024 | Hak | 0–1 | Simek | im | Sicilian Defense: Najdorf Variation | |
| Jul 1, 2024 | Ernst | 1–0 | Hak | im | Grünfeld Defense: Russian Variation, Hungarian Variation | |
| Jun 30, 2024 | Hak | 0–1 | Audi Ameya | im | Nimzo-Indian Defense: Reshevsky Variation | |
| May 12, 2024 | Hak | 0–1 | Vojta | Round 9: Hak, David - Vojta, Jakub | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| May 11, 2024 | Vilimek | 0–1 | Hak | Round 8: Vilimek, Vit - Hak, David | Sicilian Defense: Alapin Variation | |
| May 10, 2024 | Hak | 1–0 | Fizer | Round 7: Hak, David - Fizer, Marek | Queen's Gambit Declined: Semi-Tarrasch Defense | |
| May 10, 2024 | Hak | 1–0 | Buchcar | Round 6: Hak, David - Buchcar, Tomas | Caro-Kann Defense: Exchange Variation, Rubinstein Variation | |
| May 9, 2024 | Lecky | 0–1 | Hak | Round 5: Lecky, Juraj - Hak, David | Neo-Grünfeld Defense: Classical Variation, Polgar Variation | |
| May 9, 2024 | Hak | 1–0 | Molnar | Round 4: Hak, David - Molnar, Jiri | Scandinavian Defense: Mieses-Kotroc Variation | |
| May 8, 2024 | Hak | 0–1 | Tymrakiewicz | Round 9: Hak, David - Tymrakiewicz, Rafal | Slav Defense: Chebanenko Variation, Advance System | |
| May 8, 2024 | Marak | 1–0 | Hak | Round 3: Marak, Jakub - Hak, David | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| May 8, 2024 | Hak | 1–0 | Marko | Round 2: Hak, David - Marko, Anton | Nimzo-Indian Defense: St. Petersburg Variation | |
| May 8, 2024 | Novotny | 0–1 | Hak | Round 1: Novotny, Petr - Hak, David | Sicilian Defense: Accelerated Dragon, Modern Variation | |
| May 8, 2024 | Hlavina | 1–0 | Hak | Round 3: Hlavina, Matous - Hak, David | Sicilian Defense: Accelerated Dragon, Maróczy Bind | |
| May 7, 2024 | Hak | 1–0 | Kulig | Round 2: Hak, David - Kulig, Pawel | Grünfeld Defense: Exchange Variation, Spassky Variation | |
| May 7, 2024 | Bartosek | 0–1 | Hak | Round 1: Bartosek, Ivan - Hak, David | Sicilian Defense: Bowdler Attack | |
| Jan 20, 2024 | Hak | ½–½ | Ochedzan | Open Marianske Lazne 2024 | Bogo-Indian Defense: Grünfeld Variation | |
| Jan 19, 2024 | Rasmussen | 0–1 | Hak | Open Marianske Lazne 2024 | Indian Defense: Tartakower Attack | |
| Jan 18, 2024 | Hak | ½–½ | Ashwath | Open Marianske Lazne 2024 | Catalan Opening: Open Defense | |