Life and Death Judgement System for Go Game

A life and death judgment system for a go game played with a computer comprising an input reception unit that receives an input by a player, a life and death judgment processing unit that judges whether judgment subject stones or target stones are alive, and an output processing unit that outputs the result of the life and death judgment is provided. The life and death judgment processing unit tentatively determines the priority of a move at each point when implementing the judgment in a judgment realm, judges a point of a move with a high possibility and/or a move with a low possibility of a result of the judgment, changes the priority of the point of the move with a high possibility with respect to each priority of the tentatively determined point, and undertakes the move of each stone based on the priority after such change, thereby implement the judgment.