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

Forum Posts

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