13 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Mainka, Alwin | Willemze, Thomas | 1/2-1/2 | B14 | Round 2: Mainka, Alwin - Willemze, Thomas | 2025-10-04 |
| Mainka, Alwin | Hilwerda, Jonas | 0-1 | B33 | KNSB Meesterklasse 2024-2025 | 2025-05-13 |
| Mainka, Alwin | Raats, Joppe | 1-0 | C78 | Round 6: Mainka, Alwin - Raats, Joppe | 2025-02-08 |
| Mainka, Alwin | Skawinski, Arkadiusz | 1/2-1/2 | B22 | new tournament description | 2024-03-31 |
| Mainka, Alwin | Bulmaga, Irina | 1-0 | A15 | new tournament description | 2024-03-30 |
| Mainka, Alwin | Baumegger, Siegfried | * | B00 | new tournament description | 2024-03-30 |