27 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Harff, Marcel | Poltorak, Sebastian | 1-0 | A28 | Round 7: Harff, Marcel - Poltorak, Sebastian | 2025-10-25 |
| Harff, Marcel | Zanan, Evgeny | 0-1 | A28 | Round 3: Harff, Marcel - Zanan, Evgeny | 2025-10-21 |
| Harff, Marcel | Warmerdam, Max | 0-1 | A13 | Round 2: Harff, Marcel - Warmerdam, Max | 2025-06-06 |
| Harff, Marcel | Ehmann, Thilo | 1/2-1/2 | A10 | Deutsche Schnellschach-Einzelmeisterschaft 2023 | 2023-11-12 |
| Harff, Marcel | Reichmann, Hendrik | 1-0 | A21 | Deutsche Schnellschach-Einzelmeisterschaft 2023 | 2023-11-12 |
| Harff, Marcel | Yelisieiev, Yevhenii | 1/2-1/2 | A10 | Deutsche Schnellschach-Einzelmeisterschaft 2023 | 2023-11-11 |
| Harff, Marcel | Langrock, Hannes | 1/2-1/2 | A13 | Deutsche Schnellschach-Einzelmeisterschaft 2023 | 2023-11-11 |
| Harff, Marcel | Nikolic, Predrag | 1/2-1/2 | A15 | Schachbundesliga | 2022-07-07 |
| Marcel Harff | Tea Lanchava | 1/2-1/2 | A10 | Round 4: Marcel Harff - Tea Lanchava | 2022-06-18 |
| Marcel Harff | Selman Ercan | * | A11 | Round 2: Marcel Harff - Selman Ercan | 2022-06-17 |
| Harff, Marcel | Meister, Peter | 1/2-1/2 | A30 | Schachbundesliga | 2022-05-15 |
| Harff, Marcel | Dautov, Rustem | 1/2-1/2 | A13 | Schachbundesliga ab M�rz 22 | 2022-04-09 |