Threat Move

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Home * Chess * Moves * Threat Move

The Threat Move is a quite general term in chess or computer chess, since any forced tactical or attacking move might be considered a threat move. Anyway, it seems the term is usually related to null move pruning, and refers to a move which refutes a null move by a considerable fail-soft margin. It might be used along the Killer Heuristic to refute siblings of the child node below the null move. Beside move ordering issues, threat move detection might enable or trigger extensions, for instance mate threat extensions or the Botvinnik-Markoff extension.

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