| Jan 5, 2026 | Klebsch | 0–1 | Gottschalk | Runde 7: Klebsch, Tobias - Gottschalk, Siegfried | French Defense: Winawer Variation, Portisch-Hook Variation | |
| Jan 4, 2026 | Gottschalk | ½–½ | Hohlbein | Runde 6: Gottschalk, Siegfried - Hohlbein, Michael | English Opening: King's English Variation, Three Knights System | |
| Jan 4, 2026 | Salim | ½–½ | Gottschalk | Runde 5: Salim, Florian - Gottschalk, Siegfried | French Defense: Tarrasch Variation, Morozevich Variation | |
| Jan 3, 2026 | Gottschalk | ½–½ | Soellig | Runde 4: Gottschalk, Siegfried - Soellig, Martin | Nimzo-Indian Defense: Classical Variation, Berlin Variation | |
| Jan 3, 2026 | Baumann | 0–1 | Gottschalk | Runde 3: Baumann, Simon - Gottschalk, Siegfried | French Defense: Schlechter Variation | |
| Jan 2, 2026 | Gottschalk | 0–1 | Renner | Runde 2: Gottschalk, Siegfried - Renner, Kai | Dutch Defense: Queen's Knight Variation | |
| Jan 2, 2026 | Oblender | 0–1 | Gottschalk | Runde 1: Oblender, Rudi - Gottschalk, Siegfried | French Defense: Winawer Variation, Delayed Exchange Variation | |
| Jan 5, 2025 | Aden | 1–0 | Gottschalk | Round 7: Aden, Keno - Gottschalk, Siegfried | King's Indian Defense: Normal Variation, King's Knight Variation | |
| Jan 4, 2025 | Gottschalk | 0–1 | Reimer | Round 6: Gottschalk, Siegfried - Reimer, Philip | English Opening: King's English Variation, Kramnik-Shirov Counterattack | |
| Jan 4, 2025 | Renner | ½–½ | Gottschalk | Round 5: Renner, Kai - Gottschalk, Siegfried | French Defense: Tarrasch Variation, Morozevich Variation | |
| Jan 3, 2025 | Gottschalk | ½–½ | Ophardt | Round 4: Gottschalk, Siegfried - Ophardt, Paul | Zukertort Opening: Dutch Variation | |
| Jan 3, 2025 | Lieb | 0–1 | Gottschalk | Round 3: Lieb, Max - Gottschalk, Siegfried | French Defense: Steinitz Variation | |
| Jan 2, 2025 | Gottschalk | 0–1 | Laubsch | Round 2: Gottschalk, Siegfried - Laubsch, Bernd | Grünfeld Defense: Exchange Variation, Modern Exchange Variation | |
| Jan 2, 2025 | Holtwessels | 0–1 | Gottschalk | Round 1: Holtwessels, Jan - Gottschalk, Siegfried | French Defense: Winawer Variation, Alekhine-Maróczy Gambit | |
| Jan 7, 2023 | Gottschalk | 0–1 | Moerz | Lower Saxony Championship | A | Nimzo-Indian Defense: Classical Variation | |
| Jan 7, 2023 | Lehmkuhl | ½–½ | Gottschalk | Lower Saxony Championship | A | Trompowsky Attack: Edge Variation | |
| Jan 5, 2023 | Gottschalk | 1–0 | Goes | Lower Saxony Championship | A | English Opening | |
