← Oberbank Challenger Open 2026 · Round 3Steinhauer, Artur vs Koellner, Ruben Gideon, Round 3, Oberbank Challenger Open 2026CMSteinhauer, Artur2187 · GER0–1IMKoellner, Ruben Gideon2531 · GER17 Aug, 13:15Board 1 of 20Board 2 →