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 02:11:28 584720 1328 31 829 468 -241.31 ± 10.92 173 452 39 0 0 -607.67 ± 56.23
ncm-dbt-02 02:10:10 585365 1332 17 853 462 -256.23 ± 11.15 193 451 21 1 0 -702.08 ± 78.89
ncm-dbt-03 02:11:29 585646 1344 24 841 479 -245.14 ± 11.19 184 450 37 1 0 -609.82 ± 57.84
ncm-dbt-04 02:11:18 568659 1344 16 849 479 -251.77 ± 10.81 186 461 25 0 0 -688.91 ± 71.71
ncm-dbt-05 02:11:17 583811 1348 30 860 458 -249.49 ± 11.28 192 446 36 0 0 -624.64 ± 58.71
6696 118 4232 2346 -248.75 ± 4.95 928 2260 158 2 0 -642.27 ± 27.29

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
462065 ncm-dbt-01 583992 328 4 218 106 -270.83 ± 24.28 55 104 5 0 0 -724.02 ± 229.06
462064 ncm-dbt-02 585801 332 4 223 105 -275.22 ± 24.2 57 105 4 0 0 -765.44 ± 277.04
462063 ncm-dbt-04 568593 344 2 214 128 -249.79 ± 20.41 45 122 5 0 0 -732.42 ± 229.38
462062 ncm-dbt-03 585632 344 5 222 117 -258.05 ± 23.15 53 111 8 0 0 -649.26 ± 145.75
462061 ncm-dbt-05 584706 348 7 228 113 -260.51 ± 22.87 54 113 7 0 0 -675.01 ± 162.35
462060 ncm-dbt-02 585379 500 7 315 178 -249.64 ± 17.67 67 175 7 1 0 -694.74 ± 156.93
462059 ncm-dbt-01 584579 500 16 306 178 -230.16 ± 17.4 59 172 19 0 0 -561.34 ± 83.33
462058 ncm-dbt-04 569031 500 7 326 167 -262.24 ± 18.7 77 165 8 0 0 -715.51 ± 146.53
462057 ncm-dbt-03 585379 500 14 308 178 -234.38 ± 18.21 63 169 17 1 0 -561.36 ± 88.68
462056 ncm-dbt-05 582945 500 14 310 176 -236.51 ± 18.01 64 168 18 0 0 -571.09 ± 86.01
462055 ncm-dbt-02 584916 500 6 315 179 -250.76 ± 17.81 69 171 10 0 0 -676.04 ± 124.55
462054 ncm-dbt-04 568355 500 7 309 184 -243.0 ± 17.34 64 174 12 0 0 -643.67 ± 110.29
462053 ncm-dbt-01 585590 500 11 305 184 -234.38 ± 16.97 59 176 15 0 0 -603.84 ± 95.91
462052 ncm-dbt-05 583782 500 9 322 169 -255.29 ± 18.66 74 165 11 0 0 -659.13 ± 116.77
462051 ncm-dbt-03 585928 500 5 311 184 -247.41 ± 17.92 68 170 12 0 0 -643.67 ± 110.29

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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