Dev Builds » 20200808-0635

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
ncm-dbt-01 00:21:47 585590 214 8 135 71 -237.28 ± 28.89 29 69 9 0 0 -542.97 ± 132.2
ncm-dbt-02 00:21:05 584916 216 3 139 74 -257.37 ± 28.14 32 72 4 0 0 -689.62 ± 315.22
ncm-dbt-03 00:22:13 585928 220 1 139 80 -256.01 ± 26.57 31 76 3 0 0 -743.62 ± 294.56
ncm-dbt-04 00:22:13 568355 222 3 131 88 -228.36 ± 22.77 22 84 5 0 0 -654.93 ± 225.83
ncm-dbt-05 00:22:12 583782 224 5 149 70 -265.09 ± 30.77 38 68 6 0 0 -624.06 ± 184.63
1096 20 693 383 -248.55 ± 12.25 152 369 27 0 0 -639.03 ± 68.64

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
462055 ncm-dbt-02 584916 216 3 139 74 -257.37 ± 28.14 32 72 4 0 0 -689.62 ± 315.22
462054 ncm-dbt-04 568355 222 3 131 88 -228.36 ± 22.77 22 84 5 0 0 -654.93 ± 225.83
462053 ncm-dbt-01 585590 214 8 135 71 -237.28 ± 28.89 29 69 9 0 0 -542.97 ± 132.2
462052 ncm-dbt-05 583782 224 5 149 70 -265.09 ± 30.77 38 68 6 0 0 -624.06 ± 184.63
462051 ncm-dbt-03 585928 220 1 139 80 -256.01 ± 26.57 31 76 3 0 0 -743.62 ± 294.56

Commit

Commit ID 910f779eb1f432c3f90fc19c7824840e02cac837
Author Vizvezdenec
Date 2020-08-08 06:35:47 UTC
Do more futility pruning for parent nodes. This patch increases LMRdepth threshold for futility pruning at parent nodes so it can apply more often. With radical change to evaluation approach it seems that search is really far from optimal state, especially it parts that use static evaluation of position. passed STC https://tests.stockfishchess.org/tests/view/5f2da75661e3b6af64881fd0 LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 8744 W: 1305 L: 1156 D: 6283 Ptnml(0-2): 75, 789, 2500, 928, 80 passed LTC https://tests.stockfishchess.org/tests/view/5f2dcb2a61e3b6af64881ff3 LLR: 2.98 (-2.94,2.94) {0.25,1.75} Total: 17728 W: 1256 L: 1117 D: 15355 Ptnml(0-2): 22, 961, 6774, 1070, 37 Bench: 4067325
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