Dev Builds » 20181025-2108

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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 081af9080542a0d076a5482da37103a96ee15f64
Author Guenther Demetz
Date 2018-10-25 21:08:06 UTC
On main thread: reduce depth after fail high This helps resolving consecutive FH's during aspiration more efficiently STC: LLR: 2.95 (-2.94,2.94) [0.00,5.00] Total: 4992 W: 1134 L: 980 D: 2878 Elo +10.72 LTC: LLR: 2.95 (-2.94,2.94) [0.00,5.00] Total: 8123 W: 1363 L: 1210 D: 5550 Elo +6.54 No-Regression test with 8 threads, tc=15+0.15: LLR: 2.94 (-2.94,2.94) [-3.00,1.00] Total: 24740 W: 3977 L: 3863 D: 16900 Elo +1.60 This was a cooperation between me and Michael Stembera: -me recognizing SF having problems with resolving FH's efficiently at high depths, thus starting some tests based on consecutive FH's. -mstembera picking up the idea with first success at STC & LTC (so full credits to him!) -me suggesting how to resolve the issues pinpointed by S.G on PR #1768 and finally restricting the logic to the main thread so that it don't regresses at multi-thread. bench: 3314347
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