53 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Koper, Stefan | Mrkvan, Frantisek | 1-0 | E62 | Round 4: Koper, Stefan - Mrkvan, Frantisek | 2026-06-16 |
| Koper, Stefan | Zimmermann, Felix | 1/2-1/2 | E10 | Round 7: Koper, Stefan - Zimmermann, Felix | 2026-05-09 |
| Koper, Stefan | Benes, Jan Jeronym | 1-0 | D93 | Round 4: Koper, Stefan - Benes, Jan Jeronym | 2026-05-07 |
| Koper, Stefan | Hlavac, Rudolf | 1/2-1/2 | D24 | Round 2: Koper, Stefan - Hlavac, Rudolf | 2026-05-06 |
| Koper, Stefan | Dudkova, Josefina | 1-0 | E10 | POHÃR mÄsta ÅÃÄany 2023 | 2023-09-02 |
| Koper, Stefan | Petr, Jakub | 0-1 | A46 | POHÃR mÄsta ÅÃÄany 2023 | 2023-08-30 |
| Koper, Stefan | Kammova, Katerina | 1-0 | A46 | POHÃR mÄsta ÅÃÄany 2023 | 2023-08-28 |
| Stefan Koper | Adam Rudlof | 1-0 | A57 | Round 8: Stefan Koper - Adam Rudlof | 2023-07-08 |
| Stefan Koper | Jiri Kopecky | 1/2-1/2 | D85 | Round 8: Stefan Koper - Jiri Kopecky | 2022-07-16 |
| Stefan Koper | Miroslav Mach | 1-0 | A50 | Round 6: Stefan Koper - Miroslav Mach | 2022-07-14 |
| Stefan Koper | Jan Pokorny | 1-0 | A50 | Round 3: Stefan Koper - Jan Pokorny | 2022-07-11 |
| Stefan Koper | Petr Hollan | 1/2-1/2 | D85 | Round 2: Stefan Koper - Petr Hollan | 2021-09-28 |
| Stefan Koper | Matej Hrabusa | 0-1 | E30 | Round 6: Stefan Koper - Matej Hrabusa | 2021-09-28 |
| Stefan Koper | Pavel Jirovsky | 1/2-1/2 | D35 | Round 8: Stefan Koper - Pavel Jirovsky | 2021-09-28 |
| Stefan Koper | Radek Turner | 1/2-1/2 | A58 | Round 4: Stefan Koper - Radek Turner | 2021-09-26 |
| Stefan Koper | Daniel Zevenhuizen | 0-1 | A40 | Round 2: Ĺ tefan Koper - Daniel Zevenhuizen | 2021-09-25 |
| Koper, Stefan | Jorgensen, Jorgen | 0-1 | A88 | estcc 65 | 2021-09-06 |
| Koper, Stefan | Carlsten, Peter | 1/2-1/2 | A81 | estcc 65 | 2021-09-04 |
| Koper, Stefan | Uddenfeldt, Dan | 0-1 | A45 | estcc 65 | 2021-08-30 |
| Stefan Koper | Viktorie Buchtova | 1-0 | D35 | Round 8: Stefan Koper - Viktorie Buchtova | 2021-07-10 |
| Stefan Koper | Jiri Novak | 0-1 | A50 | Round 6: Stefan Koper - Jiri Novak | 2021-07-08 |
| Stefan Koper | Oliwia Czerwinska | 1-0 | D35 | Round 5: Stefan Koper - Oliwia Czerwinska | 2021-07-07 |
| Stefan Koper | Marian Kotas | 1-0 | E73 | Round 3: Stefan Koper - Marian Kotas | 2021-07-05 |