Dev Builds » 20180901-0233

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 06:30:23 585882 3986 41 2841 1104 -303.01 ± 8.1 855 1090 48 0 0 -765.61 ± 50.47
ncm-dbt-02 06:29:18 591874 4010 43 2856 1111 -302.35 ± 8.1 860 1093 52 0 0 -752.58 ± 48.38
ncm-dbt-03 06:29:08 586126 4006 33 2868 1105 -306.62 ± 8.18 877 1081 45 0 0 -777.83 ± 52.22
ncm-dbt-04 06:28:05 568331 4000 38 2895 1067 -311.23 ± 8.39 903 1051 46 0 0 -773.7 ± 51.62
ncm-dbt-05 06:29:54 583600 3998 35 2817 1146 -298.52 ± 7.9 830 1123 45 1 0 -769.84 ± 52.2
20000 190 14277 5533 -304.31 ± 3.64 4325 5438 236 1 0 -767.7 ± 22.28

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
476367 ncm-dbt-02 593802 10 0 7 3 -300.84 ± 179.63 2 3 0 0 0 -1199.83 ± 231.31
476366 ncm-dbt-03 586350 6 0 4 2 -278.86 ± 222.92 1 2 0 0 0 -1199.83 ± 276.48
476365 ncm-dbt-01 585506 486 1 362 123 -332.38 ± 24.87 119 123 1 0 0 -1073.95 ± 157.43
476364 ncm-dbt-05 582235 498 2 345 151 -293.78 ± 20.96 97 149 3 0 0 -886.88 ± 222.53
476363 ncm-dbt-04 569589 500 4 366 130 -318.24 ± 24.36 117 128 5 0 0 -798.18 ± 231.48
476362 ncm-dbt-03 587452 500 2 353 145 -302.69 ± 21.59 103 145 2 0 0 -958.31 ± 196.57
476361 ncm-dbt-02 592418 500 8 358 134 -301.32 ± 23.68 109 132 9 0 0 -694.7 ± 134.18
476360 ncm-dbt-01 585759 500 8 347 145 -286.77 ± 22.24 99 141 10 0 0 -676.04 ± 124.55
476359 ncm-dbt-05 587367 500 6 368 126 -318.24 ± 24.7 118 126 6 0 0 -766.17 ± 188.02
476358 ncm-dbt-04 570589 500 3 358 139 -308.23 ± 22.88 109 137 4 0 0 -837.28 ± 240.94
476357 ncm-dbt-03 585717 500 6 357 137 -302.69 ± 23.53 109 133 8 0 0 -715.51 ± 146.53
476356 ncm-dbt-02 593586 500 9 355 136 -295.93 ± 23.33 106 134 10 0 0 -676.04 ± 124.55
476355 ncm-dbt-01 587282 500 5 350 145 -294.6 ± 21.65 100 145 5 0 0 -798.18 ± 231.48
476354 ncm-dbt-04 570308 500 4 359 137 -308.23 ± 23.54 111 133 6 0 0 -766.17 ± 188.02
476353 ncm-dbt-05 581569 500 1 356 143 -308.23 ± 22.88 109 137 4 0 0 -837.28 ± 240.94
476352 ncm-dbt-02 591685 500 2 358 140 -309.64 ± 22.7 109 138 3 0 0 -887.58 ± 222.18
476351 ncm-dbt-03 587664 500 1 359 140 -312.47 ± 22.32 109 140 1 0 0 -1078.89 ± 154.95
476350 ncm-dbt-01 585843 500 4 352 144 -298.61 ± 22.74 105 138 7 0 0 -739.05 ± 163.27
476349 ncm-dbt-05 582611 500 6 348 146 -290.66 ± 22.41 100 143 6 1 0 -715.55 ± 177.2
476348 ncm-dbt-03 587452 500 7 354 139 -297.27 ± 22.89 105 137 8 0 0 -715.51 ± 146.53
476347 ncm-dbt-04 564057 500 4 366 130 -318.24 ± 24.02 116 130 4 0 0 -837.28 ± 240.94
476346 ncm-dbt-02 591555 500 6 356 138 -301.32 ± 23.37 108 134 8 0 0 -715.51 ± 146.53
476345 ncm-dbt-01 586393 500 2 345 153 -291.96 ± 20.38 95 153 2 0 0 -958.31 ± 196.57
476344 ncm-dbt-03 583531 500 5 369 126 -321.18 ± 25.38 121 122 7 0 0 -739.05 ± 163.27
476343 ncm-dbt-02 591900 500 7 367 126 -315.34 ± 25.02 118 124 8 0 0 -715.51 ± 146.53
476342 ncm-dbt-05 584243 500 5 352 143 -297.27 ± 21.95 102 143 5 0 0 -798.18 ± 231.48
476341 ncm-dbt-04 568991 500 5 353 142 -298.61 ± 22.11 103 142 5 0 0 -798.18 ± 231.48
476340 ncm-dbt-01 587537 500 6 357 137 -302.69 ± 22.9 107 137 6 0 0 -766.17 ± 188.02
476339 ncm-dbt-03 584706 500 5 354 141 -299.96 ± 22.58 105 139 6 0 0 -766.17 ± 188.02
476338 ncm-dbt-02 590096 500 7 360 133 -305.44 ± 23.85 111 131 8 0 0 -715.51 ± 146.53
476337 ncm-dbt-05 585506 500 6 359 135 -305.44 ± 23.54 110 133 7 0 0 -739.05 ± 163.27
476336 ncm-dbt-04 567958 500 8 356 136 -298.61 ± 23.35 107 134 9 0 0 -694.7 ± 134.18
476335 ncm-dbt-03 589240 500 3 358 139 -308.23 ± 22.88 109 137 4 0 0 -837.28 ± 240.94
476334 ncm-dbt-05 580738 500 2 352 146 -301.32 ± 22.42 105 140 5 0 0 -798.18 ± 231.48
476333 ncm-dbt-04 567759 500 6 365 129 -313.9 ± 24.85 117 125 8 0 0 -715.51 ± 146.53
476332 ncm-dbt-02 592461 500 2 350 148 -298.61 ± 21.79 102 144 4 0 0 -837.28 ± 240.94
476331 ncm-dbt-01 584958 500 3 364 133 -316.79 ± 23.85 115 131 4 0 0 -837.28 ± 240.94
476330 ncm-dbt-04 567403 500 4 372 124 -327.17 ± 25.39 123 122 5 0 0 -798.18 ± 231.48
476329 ncm-dbt-03 583028 500 4 360 136 -309.64 ± 24.67 115 126 9 0 0 -694.7 ± 134.18
476328 ncm-dbt-05 584537 500 7 337 156 -275.44 ± 20.59 89 152 9 0 0 -694.7 ± 134.18
476327 ncm-dbt-02 589368 500 2 345 153 -291.96 ± 20.38 95 153 2 0 0 -958.31 ± 196.57
476326 ncm-dbt-01 583782 500 12 364 124 -304.06 ± 25.21 115 122 13 0 0 -629.41 ± 104.8

Commit

Commit ID f923dc0fe5ec831c8cb682e1a856122c8964519f
Author Rocky640
Date 2018-09-01 02:33:17 UTC
Long Diagonal Tweaks a) Reduce PSQT values along the long diagonals on non-central squares and increase the LongDiagonal bonus accordingly. The effect is to penalise bishops on the long diagonal which can not "see" the 2 central squares. The "good" bishops still have more or less the same bonus as current master. b) For a bishop on a central square, because of the "| s" term in the code, the LongDiagonalBonus was always given. So while being there, remove the "| s" and compensate the central Bishop PSQT accordingly. Passed STC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 44498 W: 9658 L: 9323 D: 25517 http://tests.stockfishchess.org/tests/view/5b8992770ebc592cf2748942 Passed LTC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 63092 W: 10324 L: 9975 D: 42793 http://tests.stockfishchess.org/tests/view/5b89a17a0ebc592cf2748b59 Closes https://github.com/official-stockfish/Stockfish/pull/1760 bench: 4693901
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