Dev Builds » 20180128-1340

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NCM plays each Stockfish dev build 20,000 times against Stockfish 14. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.


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Commit ID fd4d800c9842ee5b6bf99fa6d06707e678eb14fe
Author syzygy1
Date 2018-01-28 13:40:07 UTC
This modifies the in-search TB probing to continue searching for a mate "behind" a TB win (or loss). (#1285) It does the following: - If a TB win or loss value allows an alpha or beta cutoff, the cutoff is taken. - Otherwise, the search of the current subtree continues. In PV nodes, the final value returned is adjusted to reflect that the position is a TB win (or loss). The patch also fixes a potential problem caused by root_probe() and root_probe_wdl() dirtying the root-move scores. This patch removes the limitation of current master that a mate is never found if the root position is not yet in the TBs, but the path to mate at some point enters the TBs. The patch is intended to preserve the efficiency and effectiveness of the current TB probing approach. No functional change (withouth TB)
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