Dev Builds » 20191210-0004

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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 3ef0c3c34a00e6b13d6c96d8c2f0d8d7a6cc25a6
Author xoto10
Date 2019-12-10 00:04:07 UTC
TrappedRook value and King positional tables Small tweak to increase the TrappedRook penalty. Nice idea by Alain Savard! STC LLR: 2.96 (-2.94,2.94) [-1.50,4.50] Total: 36977 W: 8212 L: 7993 D: 20772 LTC LLR: 2.95 (-2.94,2.94) [0.00,3.50] Total: 36395 W: 6070 L: 5795 D: 24530 Closes Bench: 5176990 ------------------------- Comments by Alain Savard: For the record, the idea was to run an experimental tuning with disabled castling in the hope to get more hits on the TrappedRook and the king in the c1- f1-f2-c2 area A first interpretation of that tuning was green STC (0, 4) and yellow LTC (0, 4): Thank you @xoto for trying this. Indeed, because the tuned Kc2 and Kf2 values were quite different, it was a good idea to try something more neutral.
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