Dev Builds » 20210211-2239

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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.


Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN


Commit ID 76daa88cf878b12a03755dc0550b3fa8e4d19cb1
Author Vizvezdenec
Date 2021-02-11 22:39:06 UTC
PV-Nodes likely to fail low Do not decrease reduction at pv-nodes which are likely to fail low. The idea of this patch can be described as following: during the search, if a node on the principal variation was re-searched in non-pv search and this re-search got a value which was much lower than alpha, then we can assume that this pv-node is likely to fail low again, and we can reduce more aggressively at this node. Passed STC LLR: 2.95 (-2.94,2.94) {-0.25,1.25} Total: 70288 W: 6443 L: 6223 D: 57622 Ptnml(0-2): 239, 5022, 24436, 5174, 273 Passed LTC LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 105656 W: 4048 L: 3748 D: 97860 Ptnml(0-2): 67, 3312, 45761, 3630, 58 Closes Bench: 3766422
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