2 games · 2023–2024 · 2 classical · 0 online
Koellner 11 draws0 Hartmann
75.0% for Koellner
Openings between them
| A43 | Benoni Defense: Benoni-Indian Defense, Kingside Move Order | 1 | 100.0% |
| A45 | Trompowsky Attack | 1 | 50.0% |
All games
| Koellner, Ruben Gideon2465 | ½-½ | Hartmann, Martin2167 | Baden-Baden Faschingsopen | 2024 |
| Koellner, Ruben Gideon2410 | 1-0 | Hartmann, Martin2192 | Baden-Baden Faschingsopen | 2023 |