Exact+Score

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An **Exact Score** is a score returned from an alpha-beta search, if alpha, the max so far, was improved, while the min-player improved his score as well (score < beta ). The current node searched was an expected PV-Node, which was confirmed by the search in finding and collecting a principal variation.

=Always or Never=
 * Pure Minimax always returns exact scores.
 * A Null Window search never returns exact scores.

=See also=
 * Alpha-Beta
 * Integrated Bounds and Values
 * Lower Bound
 * Score
 * Transposition Table
 * Upper Bound

=Forum Posts=
 * [|Bounds... when is an exact score an EXACT score?] by Ross Boyd, CCC, August 01, 2003
 * [|A few general questions...] by Bill Henry, CCC, January 29, 2012 » Root, Aspiration Windows

=What links here?= include page="exact score" component="backlinks" limit="50"
 * Up one level**