| May 17, 2026 | Pulpan | 1–0 | Ernst | Round 6: Pulpan, Jakub - Ernst, Robert | Philidor Defense: Lion Variation | |
| May 17, 2026 | Dardha | 1–0 | Ernst | Round 7: Dardha, Daniel - Ernst, Robert | Zukertort Opening | |
| May 17, 2026 | Ernst | 0–1 | Kadric | Round 3: Ernst, Robert - Kadric, Denis | Philidor Defense: Lion Variation | |
| May 17, 2026 | Modric | * | Ernst | Round 2: Modric, Milos - Ernst, Robert | ? | |
| May 16, 2026 | Lymar | 0–1 | Ernst | Round 13: Lymar, Vladislav - Ernst, Robert | Pirc Defense | |
| May 16, 2026 | Ernst | 0–1 | Averin | Round 8: Ernst, Robert - Averin, Nikolay | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 16, 2026 | Ernst | * | Roshka | Round 8: Ernst, Robert - Roshka, Yevgeniy | ? | |
| May 16, 2026 | Sanal | 1–0 | Ernst | Round 7: Sanal, Vahap - Ernst, Robert | Sicilian Defense: Closed | |
| May 16, 2026 | Ernst | 1–0 | Karvatskyi | Round 6: Ernst, Robert - Karvatskyi, Oleksii | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 16, 2026 | Meier | ½–½ | Ernst | Round 3: Meier, Georg - Ernst, Robert | King's Indian Attack | |
| May 15, 2026 | Ernst | 0–1 | Tabatabaei | Round 3: Ernst, Robert - Tabatabaei, M. Amin | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 15, 2026 | Piorun | 1–0 | Ernst | Round 6: Piorun, Kacper - Ernst, Robert | Queen's Pawn Game: Levitsky Attack | |
| May 14, 2026 | Plat | 1–0 | Ernst | Round 3: Plat, Vojtech - Ernst, Robert | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| May 10, 2026 | Ernst | 0–1 | Livaic | Hungarian Superleague 2025/26 | Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation | |
| May 9, 2026 | Jankovic | ½–½ | Ernst | Hungarian Superleague 2025/26 | Indian Defense: Anti-Nimzo-Indian | |
| May 8, 2026 | Juhasz | ½–½ | Ernst | Hungarian Superleague 2025/26 | Queen's Gambit Declined: Janowski Variation | |
| Apr 6, 2026 | Bauer | ½–½ | Ernst | Grenke Chess Festival 2026 Open | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Apr 6, 2026 | Ernst | 1–0 | Stricker | Grenke Chess Festival 2026 Open | Queen's Gambit Declined: Queen's Knight Variation | |
| Apr 5, 2026 | Balakrishnan | 1–0 | Ernst | Grenke Chess Festival 2026 Open | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Apr 5, 2026 | Ernst | 1–0 | Dobrosmyslov | Grenke Chess Festival 2026 Open | English Opening: Mikenas-Carls Variation | |
| Apr 4, 2026 | Le Goff | 0–1 | Ernst | Grenke Chess Festival 2026 Open | Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan | |
| Apr 4, 2026 | Ernst | 0–1 | Suyarov | Grenke Chess Festival 2026 Open | Sicilian Defense: Kalashnikov Variation | |
| Apr 3, 2026 | Tsetskhladze | 0–1 | Ernst | Grenke Chess Festival 2026 Open | Four Knights Game: Scotch Variation | |
| Apr 3, 2026 | Ernst | 1–0 | Balint | Grenke Chess Festival 2026 Open | King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation | |
| Jan 4, 2026 | Ernst | ½–½ | Mannion | Open A | Queen's Gambit Accepted: Central Variation, McDonnell Defense | |
| Jan 3, 2026 | Brzezina | ½–½ | Ernst | Open A | Queen's Gambit Declined: Queen's Knight Variation | |
| Jan 2, 2026 | Mrozowski | 1–0 | Ernst | Open A | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jan 2, 2026 | Ernst | ½–½ | Majcher | Open A | English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense | |
| Dec 31, 2025 | Costache | 0–1 | Ernst | Open A | Scotch Game: Mieses Variation | |
| Dec 30, 2025 | Ernst | ½–½ | Patil Priyanshu | Open A | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Dec 29, 2025 | Pniaczek | 1–0 | Ernst | Open A | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Dec 28, 2025 | Ernst | ½–½ | Kaliszuk | Open A | Réti Opening: Reversed Blumenfeld Gambit | |
| Dec 27, 2025 | Krawczyk | ½–½ | Ernst | Open A | Sicilian Defense: French Variation | |
| Oct 25, 2025 | Ernst | * | Hoegl | Semmering A-Turnier | ? | |
| Oct 25, 2025 | Pulpan | 1–0 | Ernst | Semmering A-Turnier | Old Indian Defense | |
| Oct 25, 2025 | Ernst | 1–0 | Dreher | Semmering A-Turnier | ? | |
| Sep 21, 2025 | Ernst | 1–0 | Seres | Superleague Hungary | Queen's Gambit Accepted: Central Variation, Alekhine System | |
| Sep 20, 2025 | Volokitin | 1–0 | Ernst | Superleague Hungary | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Jul 31, 2025 | Sadikhov | ½–½ | Ernst | Round 5: Sadikhov, Ulvi - Ernst, Robert | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 30, 2025 | Ernst | ½–½ | Wan | Round 4: Ernst, Robert - Wan, Yunguo | Grünfeld Defense: Three Knights Variation | |
| Jul 29, 2025 | Maksimovic | ½–½ | Ernst | Round 3: Maksimovic, Branimir - Ernst, Robert | Rubinstein Opening | |
| Jul 26, 2025 | Antonioudakis | 0–1 | Ernst | Round 9: Antonioudakis, Georgios - Ernst, Robert | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jul 25, 2025 | Ernst | 1–0 | Gaikwad | Round 8: Ernst, Robert - Gaikwad, Siddhant | Sicilian Defense: Dragon Variation | |
| Jul 24, 2025 | Sochacki | 1–0 | Ernst | Round 7: Sochacki, Christophe - Ernst, Robert | Sicilian Defense: Old Sicilian | |
| Jul 23, 2025 | Townsend | 0–1 | Ernst | Round 6: Townsend, M Paul - Ernst, Robert | English Opening: Agincourt Defense | |
| Jul 22, 2025 | Ernst | ½–½ | Marinakis | Round 5: Ernst, Robert - Marinakis, Hristos | Sicilian Defense: Najdorf Variation, English Attack | |
| Jul 21, 2025 | Zhang | ½–½ | Ernst | Round 4: Zhang, Lanlin - Ernst, Robert | Sicilian Defense: Najdorf Variation | |
| Jul 20, 2025 | Ernst | ½–½ | Alexieva | Round 3: Ernst, Robert - Alexieva, Silvia | Nimzo-Indian Defense: St. Petersburg Variation, Fischer Variation | |
| Jul 20, 2025 | Sidiropoulos | 0–1 | Ernst | Round 2: Sidiropoulos, Vasilis - Ernst, Robert | Sicilian Defense: Najdorf Variation | |
| Jul 19, 2025 | Ernst | 1–0 | Kakkanas | Round 1: Ernst, Robert - Kakkanas, Evangelos | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | |
| Jul 16, 2025 | Ernst | 0–1 | Roshka | Piestany A | Sicilian Defense: Kan Variation, Polugaevsky Variation | |
| Jul 15, 2025 | Rupesh Reddy Y | 0–1 | Ernst | Piestany A | Queen's Gambit Declined: Queen's Knight Variation | |
| Jul 14, 2025 | Ernst | ½–½ | Apaar Saxena | Piestany A | Zukertort Opening | |
| Jul 13, 2025 | Liskiewicz | ½–½ | Ernst | Piestany A | Queen's Gambit Declined: Ragozin Defense, Vienna Variation | |
| Jul 12, 2025 | Ernst | 0–1 | Skreko | Piestany A | Sicilian Defense: Najdorf Variation, English Attack | |
| Jul 11, 2025 | Karasek | 0–1 | Ernst | Piestany A | Réti Opening: Advance Variation | |
| Jul 10, 2025 | Ernst | 1–0 | Soucek | Piestany A | Zukertort Opening | |
| Jul 9, 2025 | Chiszko | ½–½ | Ernst | Piestany A | Nimzo-Indian Defense: Sämisch Variation | |
| Jul 8, 2025 | Ernst | ½–½ | Chitre Arush | Piestany A | Nimzo-Indian Defense: Sämisch Variation | |
| Jul 6, 2025 | Svanda | 1–0 | Ernst | gmb | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jul 5, 2025 | Ernst | ½–½ | Kraus | gmb | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jul 4, 2025 | Anuj Shrivatri | 0–1 | Ernst | gmb | English Opening: Caro-Kann Defensive System | |
| Jul 3, 2025 | Ernst | ½–½ | Hrbek | gmb | Ruy Lopez: Morphy Defense | |
| Jul 2, 2025 | Polak | ½–½ | Ernst | gmb | Slav Defense: Exchange Variation | |
| Jul 1, 2025 | Ernst | 1–0 | Mica | gmb | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jun 30, 2025 | Stefansson | 0–1 | Ernst | gmb | Sicilian Defense: Najdorf Variation, English Attack | |
| Jun 29, 2025 | Ernst | 1–0 | Rakshitta Ravi | gmb | King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation | |
| Jun 25, 2025 | Ernst | 1–0 | Simek | gmb | Scotch Game: Mieses Variation | |
| Jun 23, 2025 | Maerevoet | ½–½ | Ernst | 37th International Chess Tournament Open Pula 2025 | Zukertort Opening | |
| Jun 22, 2025 | Ernst | 1–0 | Furman | 37th International Chess Tournament Open Pula 2025 | Sicilian Defense: Richter-Rauzer Variation, Classical Variation | |
| Jun 21, 2025 | Seres | 0–1 | Ernst | 37th International Chess Tournament Open Pula 2025 | Sicilian Defense: French Variation, Westerinen Attack | |
| Jun 20, 2025 | Ernst | ½–½ | Okuno | 37th International Chess Tournament Open Pula 2025 | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Jun 19, 2025 | Marjanovic | ½–½ | Ernst | 37th International Chess Tournament Open Pula 2025 | Queen's Gambit Declined: Queen's Knight Variation | |
| Jun 18, 2025 | Ernst | 1–0 | Bochnickova | 37th International Chess Tournament Open Pula 2025 | English Opening: Anglo-Indian Defense, King's Indian Formation | |
| Jun 18, 2025 | Boudry | 1–0 | Ernst | 37th International Chess Tournament Open Pula 2025 | King's Indian Attack: Sicilian Variation | |
| Jun 16, 2025 | Ernst | 1–0 | Zuzek | 37th International Chess Tournament Open Pula 2025 | Sicilian Defense: Najdorf Variation, Amsterdam Variation | |
| Jun 15, 2025 | Mrkaljevic | 0–1 | Ernst | 37th International Chess Tournament Open Pula 2025 | Queen's Pawn Game: Symmetrical Variation | |
| May 30, 2025 | Grischuk | 1–0 | Ernst | Round 4: Grischuk, Alexander - Ernst, Robert | Sicilian Defense: Closed | |
| Apr 19, 2025 | Ernst | 0–1 | Geher | Round 5: Ernst, Robert - Geher, Koppany | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 19, 2025 | Jacobson | 1–0 | Ernst | Round 4: Jacobson, Brandon - Ernst, Robert | English Opening: Caro-Kann Defensive System | |
| Apr 18, 2025 | Ernst | 1–0 | Perkampus | Round 3: Ernst, Robert - Perkampus, Laurin | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Jan 4, 2025 | Ernst | 1–0 | Negrean | Cracovia 2024 | English Opening: Anglo-Indian Defense | |
| Jan 3, 2025 | Vagman | ½–½ | Ernst | Cracovia 2024 | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Jan 2, 2025 | Ernst | 1–0 | Ramirez Garcia | Cracovia 2024 | Pirc Defense | |
| Dec 31, 2024 | Babiarz | 1–0 | Ernst | Cracovia 2024 | Sicilian Defense: French Variation, Westerinen Attack | |
| Dec 30, 2024 | Ernst | 0–1 | Prraneeth Vuppala | Cracovia 2024 | Sicilian Defense: Taimanov Variation, Normal Variation | |
| Dec 30, 2024 | Polak | ½–½ | Ernst | Cracovia 2024 | Queen's Pawn Game: Colle System | |
| Dec 29, 2024 | Ernst | 1–0 | Bogdanov | Cracovia 2024 | French Defense: Winawer Variation, Alekhine-Maróczy Gambit | |
| Dec 28, 2024 | Cichon | 0–1 | Ernst | Cracovia 2024 | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Dec 27, 2024 | Ernst | 1–0 | Marjanovic | Cracovia 2024 | Slav Defense: Czech Variation, Wiesbaden Variation, Sharp Line | |
| Nov 3, 2024 | Mohylnyi | ½–½ | Ernst | Round 9: Mohylnyi, Stepan - Ernst, Robert | Sicilian Defense: Kramnik Variation | |
| Nov 2, 2024 | Ernst | 1–0 | Waldschmidt | Round 8: Ernst, Robert - Waldschmidt, Georg | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 1, 2024 | Maier | 1–0 | Ernst | Round 7: Maier, Christian - Ernst, Robert | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Oct 31, 2024 | Ernst | 1–0 | Tonndorf | Round 6: Ernst, Robert - Tonndorf, Matthias | Sicilian Defense: Scheveningen Variation, English Attack, with Qd2 | |
| Oct 30, 2024 | Piorun | * | Ernst | Round 5: Piorun, Kacper - Ernst, Robert | ? | |
| Oct 29, 2024 | Ernst | 1–0 | Strahl | Round 4: Ernst, Robert - Strahl, Christian | Caro-Kann Defense: Karpov Variation, Modern Main Line | |
| Oct 28, 2024 | Ehrke | 0–1 | Ernst | Round 3: Ehrke, Michael - Ernst, Robert | Queen's Pawn Game: Accelerated London System | |
| Oct 27, 2024 | Ernst | ½–½ | Atoyan | Round 2: Ernst, Robert - Atoyan, Alberto | Queen's Gambit Declined: Exchange Variation | |
| Oct 26, 2024 | Pasti | 0–1 | Ernst | Round 1: Pasti, Zsombor - Ernst, Robert | Queen's Gambit Declined: Ragozin Defense, Vienna Variation | |
| Aug 11, 2024 | Ernst | 1–0 | Valenta | Olomouc Chess Summer - ab | King's Indian Defense: Orthodox Variation, Positional Defense | |