11 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Sieczkowski, Mikolaj | Karcz, Bartlomiej | 1-0 | C24 | MMM PK-MP 2025 | 2025-06-13 |
| Sieczkowski, Mikolaj | Pracuch, Jan | 1/2-1/2 | C26 | MMM PK-MP 2025 | 2025-06-13 |
| Sieczkowski, Mikolaj | Cyboran, Antoni | 0-1 | B72 | MMM PK-MP 2025 | 2025-06-12 |
| Sieczkowski, Mikolaj | Grudzien, Jonatan | 0-1 | C24 | MMM PK-MP 2025 | 2025-06-11 |
| Sieczkowski, Mikolaj | Starzyk, Jan | 1-0 | C26 | MMM PK-MP 2025 | 2025-06-11 |
| Sieczkowski, Mikolaj | Fuks, Milan | 0-1 | B40 | C10 |