The 16th Nordhäuser Open hits Round 5 Saturday with classical time controls that separate the pretenders from real players. Ninety minutes per 40 moves plus 30 minutes and 30 seconds per move gives competitors room to calculate, not just react. The seven-round Swiss format in Nordhausen means every board matters. Strong German club players battle it out in this traditional tournament that rewards preparation and endgame technique. The field tightens now. Leaders face each other. Dead draws vanish.