MinStrength: An Alternative to Performance Rating

Perfection is fine, but it might cause problems. Performance ratings are also fine, but perfect scores can cause problems in calculating appropriate performance ratings. Matthew Wilson, a chess player, mathematician and economics teacher at the University of Richmond, has found a way to solve these problems. | Pictures: Sinquefield Cup 2014, a top level tournmanent, in which Fabiano Caruana started with 7.0/7. | Photos: Lennart Ootes