at the top of the tree. In this tree, white can make three possible moves. From each of those three possible moves, black can make three possible moves. From each of those nine board positions, white can make two possible moves. (In real life, the total number of moves from any position is 20 or so, but that would be hard to draw.) To decide what to do, the computer looks Corydon 56k , Corydon, IN 56k CorydonCorydon , 56k Indiana, Corydon 56k
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