Dev Builds » 20200225-2003

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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 8352977b91d9246618c7273d59400a4a05a32e2a
Author 31m059
Date 2020-02-25 20:03:42 UTC
Use single param for Outpost and ReachableOutpost. In November 2019, as a result of the simplification of rank-based outposts by 37698b0, separate bonuses were introduced for outposts that are currently occupied and outposts that are reachable on the next move. However, the values of these two bonuses are quite similar, and they have remained that way for three months of development. It appears that we can safely retire the separate ReachableOutpost parameter and use the same Outpost bonus in both cases, restoring the basic principles of Stockfish outpost evaluation to their pre-November state, while also reducing the size of the parameter space. STC: LLR: 2.96 (-2.94,2.94) {-1.50,0.50} Total: 47680 W: 9213 L: 9092 D: 29375 Ptnml(0-2): 776, 5573, 11071, 5594, 826 LTC: LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 14690 W: 1960 L: 1854 D: 10876 Ptnml(0-2): 93, 1381, 4317, 1435, 119 closes Bench: 4697493
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