| Nov 5, 2023 | Robert Ernst | 0–1 | Kateryna Dolzhykova | Round 9: Robert Ernst - Kateryna Dolzhykova | Nimzo-Indian Defense: St. Petersburg Variation, American Variation | |
| Nov 4, 2023 | Robert Ernst | ½–½ | Matic Lavrencic | Round 8: Robert Ernst - Matic Lavrencic | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Nov 3, 2023 | Arno Zude | ½–½ | Robert Ernst | Round 7: Arno Zude - Robert Ernst | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Nov 2, 2023 | Robert Ernst | ½–½ | Philippe Linster | Round 6: Robert Ernst - Philippe Linster | Nimzo-Indian Defense: Normal Variation | |
| Nov 1, 2023 | Cedric Chassard | ½–½ | Robert Ernst | Round 5: Cedric Chassard - Robert Ernst | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Sep 3, 2023 | Amine Elhijazi | 0–1 | Robert Ernst | Round 9: Amine Elhijazi - Robert Ernst | King's Indian Attack: Sicilian Variation | |
| Sep 2, 2023 | David Merei | ½–½ | Robert Ernst | Round 8: David Merei - Robert Ernst | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Aug 31, 2023 | Emil Powierski | 1–0 | Robert Ernst | Round 6: Emil Powierski - Robert Ernst | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Aug 28, 2023 | Robert Ernst | ½–½ | Milos Pavlovic | Round 3: Robert Ernst - Milos Pavlovic | Kangaroo Defense: Keres Defense, Transpositional Variation | |
| Aug 27, 2023 | Robert Ernst | ½–½ | Aljoscha Feuerstack | Round 2: Robert Ernst - Aljoscha Feuerstack | Queen's Gambit Declined: Exchange Variation | |
| Aug 18, 2023 | Robert Ernst | 0–1 | Xiangrui Kong | FIDE U16 Olympiad_boards_1-80 | Semi-Slav Defense: Anti-Moscow Gambit | |
| Aug 17, 2023 | Prajit Sai Kumar | 0–1 | Robert Ernst | FIDE U16 Olympiad_boards_1-80 | Queen's Pawn Game: Symmetrical Variation | |
| Aug 17, 2023 | Robert Ernst | 1–0 | Danis Kuandykuly | FIDE U16 Olympiad_boards_1-80 | Nimzo-Indian Defense: Normal Variation | |
| Aug 16, 2023 | Beksultan Moldagali | 0–1 | Robert Ernst | FIDE U16 Olympiad_boards_1-80 | Sicilian Defense: Closed, Fianchetto Variation | |
| Aug 15, 2023 | Robert Ernst | ½–½ | Mariia Manko | FIDE U16 Olympiad_boards_1-80 | Benko Gambit Accepted: Dlugy Variation | |
| Aug 15, 2023 | Ivano Sundac | 1–0 | Robert Ernst | FIDE U16 Olympiad_boards_1-80 | Slav Defense: Exchange Variation | |
| Aug 14, 2023 | Robert Ernst | 1–0 | Vilius Rudzkis | FIDE U16 Olympiad_boards_1-80 | Grünfeld Defense: Russian Variation | |
| Aug 14, 2023 | Robert Ernst | 0–1 | Leon Skrbec | FIDE U16 Olympiad_boards_1-80 | Nimzo-Indian Defense: St. Petersburg Variation | |
| Aug 13, 2023 | Vasilije Radulovic | 0–1 | Robert Ernst | FIDE U16 Olympiad_boards_1-80 | Slav Defense | |
| Apr 6, 2023 | Robert Ernst | ½–½ | Philip Hengl | Round 7: Robert Ernst - Philip Hengl | Queen's Gambit Declined: Janowski Variation | |
| Apr 5, 2023 | Philipp Wendl | ½–½ | Robert Ernst | Round 6: Philipp Wendl - Robert Ernst | Semi-Slav Defense: Chigorin Defense | |
| Apr 4, 2023 | Robert Ernst | 1–0 | Le Minh Phu Nguyen | Round 5: Robert Ernst - Le Minh Phu Nguyen | Nimzo-Indian Defense: Reshevsky Variation | |
| Apr 4, 2023 | Julian Leitgeb | 1–0 | Robert Ernst | Round 4: Julian Leitgeb - Robert Ernst | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Apr 4, 2023 | Robert Ernst | 1–0 | Oliver Kuti | Round 3: Robert Ernst - Oliver Kuti | King's Indian Defense: Orthodox Variation, Classical System | |
| Apr 4, 2023 | Joachim Standhartinger | 0–1 | Robert Ernst | Round 2: Joachim Standhartinger - Robert Ernst | Sicilian Defense: Kramnik Variation | |
| Apr 4, 2023 | Robert Ernst | 1–0 | Nikolaus Wallinger | Round 1: Robert Ernst - Nikolaus Wallinger | Benoni Defense: Old Benoni | |
| Dec 11, 2022 | Robert Ernst | 1–0 | Martin Gockner | Round 7: Robert Ernst - Martin Gockner | King's Indian Defense: Orthodox Variation, Classical System | |
| Dec 10, 2022 | Jurij Khalakhan | 0–1 | Robert Ernst | Round 6: Jurij Khalakhan - Robert Ernst | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Dec 9, 2022 | Robert Ernst | ½–½ | Leopold Franziskus Wagner | Round 5: Robert Ernst - Leopold Franziskus Wagner | Nimzo-Indian Defense: St. Petersburg Variation, American Variation | |
| Dec 8, 2022 | Apolline Thomas | 0–1 | Robert Ernst | Round 4: Apolline Thomas - Robert Ernst | Sicilian Defense: Closed, Traditional | |
| Dec 8, 2022 | David Stinner | ½–½ | Robert Ernst | Round 2: David Stinner - Robert Ernst | Catalan Opening: Closed | |
| Dec 8, 2022 | Robert Ernst | 1–0 | Andreas Stallmann | Round 3: Robert Ernst - Andreas Stallmann | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 8, 2022 | Robert Ernst | 0–1 | Werner Rumpf | Round 1: Robert Ernst - Werner Rumpf | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 19, 2022 | Robert Ernst | ½–½ | Patrick Fuchs | Round 9: Robert Ernst - Patrick Fuchs | Queen's Gambit Accepted: Central Variation, Greco Variation | |
| Aug 18, 2022 | Robert Ernst | 0–1 | Johannes Sucher | Round 8: Robert Ernst - Johannes Sucher | Scandinavian Defense: Portuguese Gambit, Correspondence Refutation | |
| Aug 17, 2022 | Tobias Mayrhuber | ½–½ | Robert Ernst | Round 7: Tobias Mayrhuber - Robert Ernst | Sicilian Defense: Alapin Variation, Stoltz Attack | |
| Aug 16, 2022 | Robert Ernst | ½–½ | Julian Kersten | Round 6: Robert Ernst - Julian Kersten | King's Indian Defense: Orthodox Variation, Positional Defense | |
| Aug 15, 2022 | Adam Steiner | 1–0 | Robert Ernst | Round 5: Adam Steiner - Robert Ernst | Sicilian Defense: French Variation, Westerinen Attack | |
| Aug 15, 2022 | Maximilian Sadilek | 1–0 | Robert Ernst | Round 4: Maximilian Sadilek - Robert Ernst | Zukertort Opening: Sicilian Invitation | |
| Aug 14, 2022 | Robert Ernst | 1–0 | Gerhard Spiesberger | Round 3: Robert Ernst - Gerhard Spiesberger | Dutch Defense: Rubinstein Variation | |
| Aug 13, 2022 | Daniel Weichhart | * | Robert Ernst | Round 2: Daniel Weichhart - Robert Ernst | King's Indian Attack | |
| Aug 12, 2022 | Robert Ernst | 0–1 | Georg Kilgus | Round 1: Robert Ernst - Georg Kilgus | Nimzo-Indian Defense: St. Petersburg Variation, Fischer Variation | |