Soltis: The Inner Game of ChessHow to Calculate and Win Do masters methodically cut their way through the branches of a tree of analysis? Is it true that attacking players calculate a dozen moves ahead, while positional specialists rely on abstract principles? What exactly does it mean to calculate, anyway? In The Inner Game of Chess, GM Andy Soltis shows that the key to good calculation is good visualization of the position in front of us and then after the moves were considering.