← Oberbank Challenger Open 2026 · Round 2Koellner, Ruben Gideon vs Wunder, Niklas, Round 2, Oberbank Challenger Open 2026IMKoellner, Ruben Gideon2531 · GER1–0Wunder, Niklas2122 · GER16 Aug, 13:15Board 1 of 20Board 2 →