Hash+Move

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//The **Hash Move** is a Move Ordering related issue.//

The **Hash Move** is a move probed from the transposition table, either a best move of a stored PV-node - a PV-move, or a good enough refutation move to cause a cutoff. This move should most importantly searched first. One may save the move generation at all, if the hash move actually fails high. To guard against rare TT key collisions, one may apply a legality test of the hash move.

=See also= > Collisions
 * Best Move
 * Killer Move
 * Mate Killers
 * Move Ordering
 * Null Move
 * Pseudo-Legal Move
 * PV-Move
 * Refutation Move
 * Threat Move from null move refutations
 * Transposition Table

=Forum Posts=
 * [|TTMove legality checking ? & Killers Move Format?] by Mahmoud Uthman, CCC, February 08, 2017 » Killer Move
 * [|tt move vs null move] by Erin Dame, CCC, May 27, 2017 » Null Move, Null Move Pruning
 * [|Marginal hash move] by Harm Geert Muller, CCC, September 16, 2017

=References= =What links here?= include page="Hash Move" component="backlinks" limit="80"
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