Opening table

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An opening table is a list of possible first moves and counter moves during the opening phase of a game along with their ratings. The evaluation of these moves is usually done by computer programs by means of a static position evaluation after the construction of a position tree up to a high iteration depth .

In zero-sum games with perfect information, a position tree can be built using the Minimax algorithm . This is usually pruned around all irrelevant branches by various methods. In the simplest case, a uniform position evaluation can be ensured in such games by counting the game material on the board. The sensible use of an opening table assumes that the static position evaluation used is reasonable. Alternatively, different evaluation functions can carry out a position evaluation for each move variant and save this in different fields of the opening table.

Opening tables can be in digital or paper form.

Relevance in different games

In the game of chess in particular , opening tables - usually referred to as the opening book - are widely used. In games without perfect information, such as poker , the probability of victory is evaluated instead of the static position evaluation.

various

Endgame tables exist analogous to opening tables .