Presents mathematical techniques for solving late-stage endgame problems. Uses combinational game theory, which Berlekamp (mathematics, UC Berkeley) helped develop, to solve Go-related problems. The theory presented assigns each active area on the board an abstract value and shows how to compare them to select the optimum move or add them up to determine the ideal outcome. Values can be familiar numbers and fractions, or other abstractions. Includes an overview of the mathematics of games, Go rules and history, and a glossary. Annotation copyright Book News, Inc. Portland, Or.