Grandmaster Vincent Keymer of Germany became the sole leader of the Grenke Chess Freestyle Open after beating Hans Niemann and drawing Magnus Carlsen over the weekend. Alexey Sarana, Maxime Vachier-Lagrave and Pranav Venkatesh trail by half a point with two rounds remaining. Rounds eight and nine are scheduled for Monday in Karlsruhe.
Vincent Keymer capitalized on a tactical blunder by Hans Niemann in round six to secure victory from a symmetrical starting position. Keymer explained the oversight, noting Niemann's queen placement on d3 likely distracted him from the hanging knight check. Several top games ended in draws, including Carlsen against Sarana and Nepomniachtchi versus Vachier-Lagrave, due to the balanced board setup with opposing bishops.
