11 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Kosecki, Oskar | Kolendo, Kajetan | 1/2-1/2 | C00 | MWJ | 2025-06-15 |
| Kosecki, Oskar | Pieczewska, Jadwiga | 1-0 | C00 | MWJ | 2025-06-14 |
| Kosecki, Oskar | Wisniarek, Jakub | 0-1 | B50 | MWJ | 2025-06-13 |
| Kosecki, Oskar | Lachacz, Tymoteusz | 1/2-1/2 | B50 | MWJ | 2025-06-12 |
| Kosecki, Oskar | Nowak, Franciszek | 0-1 | B38 | MWJ | 2025-06-11 |
| Kosecki, Oskar | Nawrocki, Marek | 0-1 | C00 | open a |