PostHeaderIcon Transposition Table

What is Transposition Table?

A transposition table is a table of previously encountered game states, together with their backed-up minimax values. Whenever a new state is generated, if it is stored in the transposition table, its stored value is used instead of searching the tree below the node. Transposition table can be used very effectively so that reachable search depth in chess, for example, can be doubled.

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