| Jan 5, 2026 | Warns | ½–½ | Hengst | Runde 7: Warns, Harald - Hengst, Ruediger | East Indian Defense | |
| Jan 4, 2026 | Warns | 1–0 | Schlaetker | Runde 6: Warns, Harald - Schlaetker, Christine | East Indian Defense | |
| Jan 4, 2026 | Shalovylo | 1–0 | Warns | Runde 5: Shalovylo, Yuriy - Warns, Harald | Slav Defense: Three Knights Variation | |
| Jan 3, 2026 | Geib | 1–0 | Warns | Runde 4: Geib, Niklas - Warns, Harald | Queen's Pawn Game: London System | |
| Jan 3, 2026 | Warns | ½–½ | Stolz | Runde 3: Warns, Harald - Stolz, Robin | Indian Defense: Spielmann-Indian | |
| Jan 2, 2026 | Feichtner | * | Warns | Runde 2: Feichtner, David - Warns, Harald | ? | |
| Jan 2, 2026 | Warns | 1–0 | Hupe | Runde 1: Warns, Harald - Hupe, Henning | Yusupov-Rubinstein System | |
| Oct 25, 2025 | Warns | 1–0 | Boehm | Runde 7: Warns, Harald - Boehm, Viviane-Justine | Queen's Pawn Game: Colle System | |
| Oct 25, 2025 | Lehmkuhl | 1–0 | Warns | Runde 6: Lehmkuhl, Stefan - Warns, Harald | Queen's Gambit Declined: Exchange Variation | |
| Oct 25, 2025 | Krneta | ½–½ | Warns | Runde 5: Krneta, Slavko - Warns, Harald | Alekhine Defense: Normal Variation | |
| Oct 24, 2025 | Warns | 0–1 | Luetzen | Runde 4: Warns, Harald - Luetzen, Patrick | Grünfeld Defense: Three Knights Variation, Burille Variation | |
| Oct 24, 2025 | Warns | 0–1 | Meschke | Runde 3: Warns, Harald - Meschke, Oliver | Dutch Defense | |
| Oct 23, 2025 | Behrendt | 0–1 | Warns | Runde 2: Behrendt, Ingo - Warns, Harald | English Opening: Anglo-Indian Defense, Scandinavian Defense | |
| Oct 14, 2025 | Warns | ½–½ | Tiedemann | Runde 1: Warns, Harald - Tiedemann, Joerg | Queen's Pawn Game | |
| Jan 5, 2025 | Kurzova | 1–0 | Warns | Round 7: Kurzova, Marianna - Warns, Harald | Alekhine Defense: Exchange Variation | |
| Jan 4, 2025 | Warns | ½–½ | Ayvazyan | Round 6: Warns, Harald - Ayvazyan, Gohar | Pseudo Queen's Indian Defense | |
| Jan 4, 2025 | Schlaetker | 1–0 | Warns | Round 5: Schlaetker, Christine - Warns, Harald | Alekhine Defense: Four Pawns Attack, Main Line | |
| Jan 3, 2025 | Warns | ½–½ | Elbert | Round 4: Warns, Harald - Elbert, Andre | Dutch Defense | |
| Jan 3, 2025 | Gross | ½–½ | Warns | Round 3: Gross, Daniel - Warns, Harald | English Opening: King's English Variation | |
| Jan 2, 2025 | Warns | 0–1 | Drews | Round 2: Warns, Harald - Drews, Nicolas | Queen's Pawn Game: Colle System | |
| Jan 2, 2025 | Sturm | 0–1 | Warns | Round 1: Sturm, Tobias - Warns, Harald | Alekhine Defense: Exchange Variation | |
| Jun 9, 2024 | Rein | 1–0 | Warns | Round 5: Rein, Joachim - Warns, Harald | Queen's Pawn Game | |
| Jun 9, 2024 | Nordhorn | 1–0 | Warns | Round 4: Nordhorn, Horst - Warns, Harald | Queen's Pawn Game: London System | |
| Jun 8, 2024 | Warns | 0–1 | Baisakow | Round 3: Warns, Harald - Baisakow, Alexander | Queen's Pawn Game: Zukertort Variation | |
| Jun 8, 2024 | Vahab Nejhab Amlashi | 0–1 | Warns | Round 2: Vahab Nejhab Amlashi, Mohamad Hossein - Warns, Harald | Queen's Gambit Declined | |
| Jun 7, 2024 | Warns | 0–1 | Jacobi | Round 1: Warns, Harald - Jacobi, Felix-Hagen | Benoni Defense: Old Benoni | |
| Dec 27, 2024 | Carmesin | 1–0 | Warns | Round 1: Carmesin, Leon Lucas Finn - Warns, Harald | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 17, 2024 | Warns | 1–0 | Rajendram | Round 4: Warns, Harald - Rajendram, Reanosh | Queen's Pawn Game: Colle System | |
| Nov 17, 2024 | Drews | 1–0 | Warns | Round 5: Drews, Nicolas - Warns, Harald | Queen's Gambit Declined: Marshall Defense | |
| Nov 16, 2024 | Warns | ½–½ | Nuesken | Round 2: Warns, Harald - Nuesken, Norbert | Queen's Pawn Game: Colle System | |
| Nov 16, 2024 | Lueders Vega | 0–1 | Warns | Round 3: Lueders Vega, Iago Ernst - Warns, Harald | Alekhine Defense: Four Pawns Attack | |
| Nov 15, 2024 | Schubert | 1–0 | Warns | Round 1: Schubert, Matthias - Warns, Harald | Alekhine Defense: Four Pawns Attack, Main Line | |
| — | Warns | ½–½ | Kamps | Round 2: Warns, Harald - Kamps, Manuel | Indian Defense | |
| — | Warns | ½–½ | Morawietz | Round 4: Warns, Harald - Morawietz, Manuel | Yusupov-Rubinstein System | |
| — | Warns | 0–1 | Miowitz | Round 6: Warns, Harald - Miowitz, Torsten | Queen's Pawn Game | |
| — | Glass | 1–0 | Warns | Round 1: Glass, Thomas - Warns, Harald | Queen's Pawn Game: Symmetrical Variation | |
| — | Ulrich | 1–0 | Warns | Round 3: Ulrich, Andreas - Warns, Harald | Alekhine Defense: Scandinavian Variation | |
| — | Koronowski | ½–½ | Warns | Round 5: Koronowski, Heinz-Juergen - Warns, Harald | Alekhine Defense | |
| — | Bergner | 0–1 | Warns | Round 7: Bergner, Matthias - Warns, Harald | Alekhine Defense: Exchange Variation | |
