Dev Builds » 20180605-1615

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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 e4f8a4fa7f5da8287579c0c74e292974c6acfd8d
Author Stéphane Nicolet
Date 2018-06-05 16:15:54 UTC
Call cycle detection before qsearch() This has the property of raising alpha before calling qsearch(), thus maybe giving some more cuts during qsearch(). The patch is equivalent to the use of cycle detection inside qsearch() at depth 0, but is in fact implemented by re-ordering code inside search(), which explains the [0..4] bounds in the following tests. STC (interrupted after 124250 games, with LLR=0.87): LLR: 0.87 (-2.94,2.94) [0.00,4.00] Total: 124250 W: 24973 L: 24470 D: 74807 LTC: LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 74234 W: 11098 L: 10733 D: 52403 Closes Bench: 4326784
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