| Hasanov, Zaur2325 | 1-0 | Koehler, Christian Friedrich2208 | grenke Chess Open 2026 | 2026 |
| Amar, Elham2586 | 1-0 | Koehler, Christian Friedrich2208 | grenke Chess Open 2026 | 2026 |
| Koehler, Christian Friedrich2208 | ½-½ | Nothnagel, Marian Can2440 | grenke Chess Open 2026 | 2026 |
| Kyparissopoulos, Spyridon2092 | 1-0 | Koehler, Christian Friedrich2274 | 28th OIBM 2025 | 2025 |
| Joel Paul Ganta2085 | ½-½ | Koehler, Christian Friedrich2274 | 28th OIBM 2025 | 2025 |
| Koehler, Christian Friedrich2274 | ½-½ | Ronsin, Corentin2093 | 28th OIBM 2025 | 2025 |
| Koehler, Christian Friedrich2274 | 0-1 | Sandipan, C2483 | 28th OIBM 2025 | 2025 |
| Koehler, Christian Friedrich2274 | 0-1 | Sasikiran, K2535 | 28th OIBM 2025 | 2025 |
| Koehler, Christian Friedrich2187 | 1-0 | Morawietz, D2372 | 27th OIBM 2024 | 2024 |
| Womacka, M2345 | ½-½ | Koehler, Christian Friedrich2187 | 27th OIBM 2024 | 2024 |
| Koehler, Christian Friedrich2187 | 1-0 | Niese, H2046 | 27th OIBM 2024 | 2024 |
| Koehler, Christian Friedrich2187 | 0-1 | Karthik, V42581 | 27th OIBM 2024 | 2024 |
| Koehler, Christian Friedrich2187 | 0-1 | Piorun, K2581 | 27th OIBM 2024 | 2024 |
| Ghazarian, Kirk2473 | 1-0 | Koehler, Christian Friedrich2181 | 26th OIBM 2023 | 2023 |
| Koehler, Christian Friedrich2181 | ½-½ | Dolzhykova, Kateryna2336 | 26th OIBM 2023 | 2023 |