| Nov 1, 2025 | Hartmann | ½–½ | Dahl | Round 11: Hartmann, Wolfgang, Dr. - Dahl, Baard | Caro-Kann Defense: Panov Attack, Fianchetto Defense | |
| Oct 31, 2025 | Dijkstra | ½–½ | Hartmann | Round 10: Dijkstra, Matthijs - Hartmann, Wolfgang, Dr. | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Oct 30, 2025 | Hartmann | 1–0 | Marino | Round 9: Hartmann, Wolfgang, Dr. - Marino, Oscar | English Opening: Anglo-Indian Defense | |
| Oct 29, 2025 | Hartmann | 0–1 | Wegemund | Round 8: Hartmann, Wolfgang, Dr. - Wegemund, Hubert | English Opening: Anglo-Dutch Defense | |
| Oct 28, 2025 | Riga | 0–1 | Hartmann | Round 7: Riga, Raffaele - Hartmann, Wolfgang, Dr. | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Oct 26, 2025 | Hartmann | ½–½ | Serafim Junior | Round 6: Hartmann, Wolfgang, Dr. - Serafim Junior, Arnor | English Opening: King's English Variation | |
| Oct 25, 2025 | Van den Bersselaar | 1–0 | Hartmann | Round 5: Van den Bersselaar, Jeroen - Hartmann, Wolfgang, Dr. | Queen's Gambit Declined | |
| Oct 24, 2025 | Koops | ½–½ | Hartmann | Round 4: Koops, Randolf - Hartmann, Wolfgang, Dr. | Queen's Pawn Game | |
| Oct 23, 2025 | Hartmann | 1–0 | Pascal | Round 3: Hartmann, Wolfgang, Dr. - Pascal, Frederic | English Opening: King's English Variation | |
| Oct 22, 2025 | Fabiano | 1–0 | Hartmann | Round 2: Fabiano, Giuseppe - Hartmann, Wolfgang, Dr. | Queen's Gambit Declined: Traditional Variation | |
| Oct 21, 2025 | Hartmann | 0–1 | Pierrot | Round 1: Hartmann, Wolfgang, Dr. - Pierrot, Facundo | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 | |
| Oct 26, 2024 | Motwani | 1–0 | Hartmann | Round 1: Motwani, Paul - Hartmann, Wolfgang, Dr. | Sicilian Defense: Closed, Traditional | |
| Aug 27, 2024 | Heck | 1–0 | Hartmann | Round 5: Heck, Norbert - Hartmann, Wolfgang, Dr. | English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 | |
| Aug 26, 2024 | Hartmann | ½–½ | Bastian | Round 4: Hartmann, Wolfgang, Dr. - Bastian, Martin | English Opening: Anglo-Indian Defense | |
| Aug 25, 2024 | Grabe | ½–½ | Hartmann | Round 3: Grabe, Lutz - Hartmann, Wolfgang, Dr. | Queen's Pawn Game: Colle System | |
| Jul 24, 2024 | Hartmann | ½–½ | Malli | Biel Chess Festival MTO | English Opening: Caro-Kann Defensive System | |
| Jul 22, 2024 | Bommini Mounika Akshaya | 1–0 | Hartmann | Biel Chess Festival MTO | Queen's Pawn Game: Symmetrical Variation | |
| Jul 20, 2024 | Hartmann | 1–0 | Asllani | Biel Chess Festival MTO | Réti Opening: Anglo-Slav Variation, Bogoljubow Variation, Stonewall Line | |
| Jul 19, 2024 | Pappier | 0–1 | Hartmann | Biel Chess Festival 2024 | Queen's Gambit Declined: Exchange Variation | |
| Jul 18, 2024 | Hartmann | ½–½ | Stefan | Biel Chess Festival 2024 | English Opening: Agincourt Defense, Bogoljubow Defense | |
| Jul 17, 2024 | Nurgaliyeva | 1–0 | Hartmann | Biel Chess Festival - MTO | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Oct 26, 2023 | Hartmann | * | Horackova | 50+ World Senior Championship | ? | |
| Oct 25, 2023 | Nikolai Vlassov | * | Hartmann | 50+ World Senior Championship | ? | |
| Nov 12, 2022 | Loew | * | Hartmann | 25th Open Bavarian Championship | ? | |
| Nov 11, 2022 | Hartmann | ½–½ | Gschwendtner | 25th Open Bavarian Championship | ? | |
| Nov 7, 2022 | Hartmann | 0–1 | Marzano | 25th Open Bavarian Championship | ? | |
