6 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Oster, Klaus | Koppe, Connor | 1-0 | A46 | Round 6: Oster, Klaus - Koppe, Connor | 2026-09-27 |
| Oster, Klaus | Hegmann, Hartmut | 1-0 | E18 | Round 2: Oster, Klaus - Hegmann, Hartmut | 2026-09-26 |