Grenke Open

The tournament features a 9-round Swiss system with classical time controls. Players compete in different rating categories (A, B, and C groups). Participants can switch to the Freestyle Chess Open until Round 5, keeping their previously earned points.

Time Control: 90 minutes for the game + 30 seconds per move

The Grenke Chess Open is an international open chess tournament held annually in Karlsruhe, Germany. It is open to players of all levels, from grandmasters to amateurs, and follows a classical chess format.