| — | Ertan | 0–1 | Jahncke | new tournament description | Ruy Lopez: Closed, Anti-Marshall | |
| Apr 26, 2025 | Fedorovsky | 1–0 | Jahncke | Schachbundesliga | Queen's Gambit Declined: Austrian Defense | |
| Apr 25, 2025 | Jahncke | 0–1 | Colbow | Schachbundesliga | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Apr 21, 2025 | Kucuksari | 0–1 | Jahncke | Freestyle Chess Open A | ? | |
| Apr 20, 2025 | Leisch | 1–0 | Jahncke | Freestyle Chess Open A | ? | |
| Apr 18, 2025 | Safarli | 1–0 | Jahncke | Round 2: Safarli, Eltaj - Jahncke, Giso | Ruy Lopez: Morphy Defense, Tarrasch Variation | |
| Dec 1, 2024 | Jahncke | ½–½ | Tica | Bundesliga 24/25 | English Opening: Agincourt Defense | |
| Nov 30, 2024 | Tarlev | ½–½ | Jahncke | Bundesliga 24/25 | Ruy Lopez: Closed | |
| Oct 24, 2024 | Jahncke | 0–1 | Ermeni | 39th European Chess Club Cup | Benoni Defense: Hromádka System | |
| Oct 22, 2024 | Jahncke | 1–0 | Vagle | 39th European Chess Club Cup | Dutch Defense: Classical Variation, Buenos Aires Variation | |
| Oct 20, 2024 | Jahncke | 1–0 | Simonovic | 39th European Chess Club Cup | Sicilian Defense: Accelerated Dragon, Maróczy Bind, Breyer Variation | |
| Mar 31, 2024 | Jahncke | 0–1 | Hrbek | Grenke Chess Open 2024 | King's Indian Attack: Sicilian Variation | |
| Mar 31, 2024 | Faerber | 0–1 | Jahncke | new tournament description | Ruy Lopez: Closed, Martinez Variation | |
| Mar 30, 2024 | Jahncke | 1–0 | Tan | Grenke Open | Catalan Opening: Open Defense | |
| Oct 25, 2024 | Jahncke | 0–1 | Kisic | Round 6: Jahncke, Giso - Kisic, Bozidar | Queen's Pawn Game: Zukertort Variation | |
| Oct 23, 2024 | Huzman | 1–0 | Jahncke | Round 4: Huzman, Alexander - Jahncke, Giso | King's Indian Attack: Double Fianchetto | |
| Oct 21, 2024 | Guliyev | 1–0 | Jahncke | Round 2: Guliyev, Namig - Jahncke, Giso | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Aug 1, 2024 | Gluma | 1–0 | Jahncke | Round 1: Gluma, Christian - Jahncke, Giso | Italian Game: Classical Variation, Giuoco Pianissimo | |
| Jul 15, 2022 | Jahncke | ½–½ | Piscopo | Bastia2022 | Catalan Opening: Closed | |
| Jul 14, 2022 | Podvin | 0–1 | Jahncke | Bastia2022 | Blackmar-Diemer Gambit Declined: O'Kelly Defense | |
| Jul 13, 2022 | Yankelevich | 1–0 | Jahncke | Bastia2022 | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 26, 2021 | Jahncke | 0–1 | Galego | Guimaraes Chess 2021 | Old Indian Defense: Normal Variation | |
