32 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Jonkman, Harmen | Bersamina, Paulo | 0-1 | B30 | 23rd Bangkok Chess Club Open 2026 | 2026-04-16 |
| Jonkman, Harmen | Grand, Hans-Henrik | 1-0 | B13 | 39th European Chess Club Cup | 2024-10-25 |
| Jonkman, Harmen | Zlatkov, Anton | 1-0 | B50 | 39th European Chess Club Cup | 2024-10-22 |
| Jonkman, Harmen | Van de Lagemaat, Arend | 1-0 | D02 | 39th European Chess Club Cup | 2024-10-21 |
| Jonkman, Harmen | Sasikiran, Krishnan | 0-1 | A48 | Aimchess Rapid Play-In | Champions Chess Tour | 2023-06-12 |
| Jonkman, Harmen | Koellner, Ruben Gideon | 0-1 | B00 | Aimchess Rapid Play-In | Champions Chess Tour | 2023-06-12 |
| Jonkman, Harmen | Alsina Leal, Daniel | 1-0 | B30 | Aimchess Rapid Play-In | Champions Chess Tour | 2023-06-12 |
| Jonkman, Harmen | Gurevich, Mikhail | 1/2-1/2 | D02 | Limburg Open | 2023-05-29 |
| Jonkman, Harmen | Pruijssers, Roeland | 0-1 | A48 | Limburg Open | 2023-05-27 |
| Jonkman, Harmen | Sahithi, Varshini M | 1/2-1/2 | D02 | II CHESSABLE SUNWAY FORMENTERA | 2023-04-27 |
| Jonkman, Harmen | Southcott-Moyers, Indy | 1-0 | D02 | II CHESSABLE SUNWAY FORMENTERA | 2023-04-25 |
| Jonkman, Harmen | Vaishali, Rameshbabu | 0-1 | D02 | II CHESSABLE SUNWAY FORMENTERA | 2023-04-21 |
| Jonkman, Harmen | Fedoseev, Vladimir | 0-1 | A46 | Formentera 2023 | 2023-04-20 |
| Jonkman, Harmen | Bernadskiy, Vitaliy | 1/2-1/2 | D38 | Formentera 2023 | 2023-04-18 |
| Jonkman, Harmen | Mikaelyan, Arman | 0-1 | B22 | Airthings Masters Play-In | Champions Chess Tour | 2023-02-03 |
| Jonkman, Harmen | Iskusnyh, Sergei | 1-0 | C02 | Airthings Masters Play-In | Champions Chess Tour | 2023-02-03 |
| Jonkman, Harmen | Tristan, Leonardo | 0-1 | C34 | Airthings Masters Play-In | Champions Chess Tour | 2023-02-03 |