← 59th Biel International Chess Festival 2026 · Triathlon | GenChall Rapid · Round 4Kosteniuk, Alexandra vs Materia, Marco, Round 4, 59th Biel International Chess Festival 2026GMKosteniuk, Alexandra2431 · SUI0–1IMMateria, Marco2491 · FRA12 Jul, 14:30← Board 1Board 2 of 3Board 3 →