12 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Jachnik, Stanislaw | Krzewinski, Piotr | 1/2-1/2 | B22 | mwj sypniewo c15 | 2026-06-06 |
| Jachnik, Stanislaw | Budzinski, Aleksander | 1-0 | B22 | mwj sypniewo c15 | 2026-06-05 |
| Jachnik, Stanislaw | Trojanowski, Wojciech | 0-1 | C45 | MWJ | 2025-06-15 |
| Jachnik, Stanislaw | Wyszkowski, Adam | 1-0 | B22 | MWJ | 2025-06-14 |
| Jachnik, Stanislaw | Kilarski, Kacper | 0-1 | B22 | MWJ | 2025-06-13 |
| Jachnik, Stanislaw | Jasinski, Bartlomiej | 0-1 | B01 | MWJ | 2025-06-13 |
| Jachnik, Stanislaw | Wilusz, Stanislaw | 1-0 | C41 | MWJ | 2025-06-11 |