42 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Kowalski, Maciej | Nesterenko, Kyrylo | 0-1 | A00 | anderssenRAPID | 2026-08-01 |
| Kowalski, Maciej | Grot, Blazej | 1-0 | A45 | anderssenRAPID | 2026-08-01 |
| Kowalski, Maciej | Malecki, Mateusz | 1-0 | A45 | Memoria? Adolfa Anderssena 2026 | 2026-08-01 |
| Kowalski, Maciej | Madrawski, Krzysztof | 0-1 | A40 | anderssenRAPID | 2026-08-01 |
| Kowalski, Maciej | Dziubinski, Pawel | 0-1 | D12 | anderssenRAPID | 2026-08-01 |
| Kowalski, Maciej | Krasniewski, Maciej | 0-1 | A05 | rzeszow | 2026-07-09 |
| Kowalski, Maciej | Zareba, Piotr | 0-1 | A45 | rzeszow | 2026-07-09 |
| Kowalski, Maciej | Panasiuk, Piotr | 1-0 | A45 | II DMP Juniorow 2026 | 2026-05-29 |
| Kowalski, Maciej | Weber, Wiktor | 1/2-1/2 | A05 | II DMP Juniorow 2026 | 2026-05-27 |
| Kowalski, Maciej | Spytek, Hubert | 1-0 | A00 | II DMP Juniorow 2026 | 2026-05-25 |
| Kowalski, Maciej | Wcislo, Piotr | 1-0 | A05 | II DMP Juniorow 2026 | 2026-05-21 |
| Kowalski, Maciej | Duda, Leon | 0-1 | A42 | II DMP Juniorow 2026 | 2026-05-21 |
| Kowalski, Maciej | Domoradzki, Tomasz | 1-0 | D20 | Open B | 2025-02-07 |
| Kowalski, Maciej | Mikolajczyk, Krzysztof | 1-0 | B30 | Open B | 2025-02-06 |
| Kowalski, Maciej | Linek, Karol | 0-1 | D06 | B | 2025-02-04 |
| Kowalski, Maciej | Onopriienko, Mariia | 1-0 | B10 | Memorial Adolfa Anderssena 2025 | |
| Kowalski, Maciej | Kruszelnicki, Kacper | 1-0 | A05 | Memorial Adolfa Anderssena 2025 | |
| Kowalski, Maciej | Miliotis, Evagelos | 0-1 | B27 | Memorial Adolfa Anderssena 2025 | |
| Kowalski, Maciej | Toczynska, Natalia | 1-0 | C15 | Memorial Adolfa Anderssena 2025 | |
| Kowalski, Maciej | Bogenryter, Hubert | 1-0 | E71 | Memorial Adolfa Anderssena 2025 | |
| Kowalski, Maciej | Bochniak, Franciszek | 0-1 | A05 | C16b | |
| Kowalski, Maciej | Krogulski, Maksymilian | 1/2-1/2 | D10 | C16b |