Dev Builds » 20200405-0635

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

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

Commit ID 3cb1c6c3c6206c3c2a0d78ce1cb9820256efc96e
Author protonspring
Date 2020-04-05 06:35:31 UTC
remove KNPK endgame code In more than 100k local KNPK games, there is no discernible difference between master and master with this endgame removed: master:42971, patch:42973, draws: 3969. Removal does not seem to regress in normal games. STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 46390 W: 8998 L: 8884 D: 28508 Ptnml(0-2): 707, 5274, 11163, 5300, 751 https://tests.stockfishchess.org/tests/view/5e83b18ee42a5c3b3ca2ef02 LTC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 44768 W: 5863 L: 5814 D: 33091 Ptnml(0-2): 251, 3918, 14028, 3905, 282 https://tests.stockfishchess.org/tests/view/5e84a82a4411759d9d0984f4 In tests with a book of endgames that can convert into KNPK, no significant difference can be seen either ``` TC 1.0+0.01 Score of patch vs master: 6131 - 6188 - 27681 [0.499] 40000 Elo difference: -0.5 +/- 1.9, LOS: 30.4 %, DrawRatio: 69.2 % TC 2.0+0.02 Score of patch vs master: 5740 - 5741 - 28519 [0.500] 40000 Elo difference: -0.0 +/- 1.8, LOS: 49.6 %, DrawRatio: 71.3 % `` closes https://github.com/official-stockfish/Stockfish/pull/2611 Bench 4512059
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