Magnus Carlsen leads the Grenke Freestyle Chess Open after five rounds, standing as the only player with a perfect score in a field of nearly 300 participants. The nine-round Swiss tournament, which includes 16 players rated 2700 or above, is a notable application of the Freestyle Chess format in an open setting. Seven players are half a point behind Carlsen, including Awonder Liang and Parham Maghsoodloo. Carlsen will face Liang with the black pieces in round six. | Photo: Stev Bonhage

