Dev Builds » 20180508-2342

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 06:29:30 585066 3974 25 2849 1100 -308.67 ± 8.15 872 1080 35 0 0 -820.52 ± 59.74
ncm-dbt-02 06:29:52 591427 4012 30 2877 1105 -307.97 ± 8.1 877 1093 36 0 0 -817.25 ± 58.84
ncm-dbt-03 06:30:37 584602 4022 30 2919 1073 -314.12 ± 8.37 917 1055 39 0 0 -803.65 ± 56.36
ncm-dbt-04 06:31:37 571178 4002 34 2859 1109 -305.38 ± 8.09 866 1093 42 0 0 -789.77 ± 54.18
ncm-dbt-05 06:30:03 584957 3990 32 2869 1089 -308.96 ± 8.25 883 1072 39 1 0 -793.48 ± 56.32
20000 151 14373 5476 -309.01 ± 3.66 4415 5393 191 1 0 -804.5 ± 24.8

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
476499 ncm-dbt-01 585801 442 3 321 118 -314.95 ± 24.94 100 118 3 0 0 -866.02 ± 233.0
476498 ncm-dbt-04 565705 472 7 335 130 -297.88 ± 24.12 101 126 9 0 0 -684.5 ± 134.09
476497 ncm-dbt-05 583321 474 8 341 125 -303.05 ± 24.69 105 123 9 0 0 -685.25 ± 134.1
476496 ncm-dbt-02 589454 496 1 360 135 -318.09 ± 23.03 112 135 1 0 0 -1077.49 ± 155.65
476495 ncm-dbt-03 585548 498 5 364 129 -315.98 ± 24.16 115 129 5 0 0 -797.48 ± 231.46
476494 ncm-dbt-01 585042 500 4 366 130 -318.24 ± 24.7 118 126 6 0 0 -766.17 ± 188.02
476493 ncm-dbt-04 568275 500 3 368 129 -322.66 ± 24.52 119 127 4 0 0 -837.28 ± 240.94
476492 ncm-dbt-05 586350 500 3 346 151 -291.96 ± 21.03 97 149 4 0 0 -837.28 ± 240.94
476491 ncm-dbt-02 592893 500 6 364 130 -312.47 ± 24.03 114 130 6 0 0 -766.17 ± 188.02
476490 ncm-dbt-03 583321 500 1 362 137 -316.79 ± 23.15 113 135 2 0 0 -958.31 ± 196.57
476489 ncm-dbt-01 585253 500 3 359 138 -309.64 ± 22.7 109 138 3 0 0 -887.58 ± 222.18
476488 ncm-dbt-04 568912 500 2 359 139 -311.05 ± 22.52 109 139 2 0 0 -958.31 ± 196.57
476487 ncm-dbt-05 585717 500 1 364 135 -319.71 ± 23.11 114 135 1 0 0 -1078.89 ± 154.95
476486 ncm-dbt-02 591900 500 2 354 144 -304.06 ± 22.41 106 140 4 0 0 -837.28 ± 240.94
476485 ncm-dbt-03 583614 500 5 361 134 -309.64 ± 23.37 111 134 5 0 0 -798.18 ± 231.48
476484 ncm-dbt-01 585506 500 1 361 138 -315.34 ± 23.34 113 134 3 0 0 -887.58 ± 222.18
476483 ncm-dbt-04 570829 500 6 347 147 -289.35 ± 21.96 99 143 8 0 0 -715.51 ± 146.53
476482 ncm-dbt-05 584327 500 3 363 134 -315.34 ± 23.34 113 134 3 0 0 -887.58 ± 222.18
476481 ncm-dbt-02 594671 500 3 344 153 -289.35 ± 20.41 94 153 3 0 0 -887.58 ± 222.18
476480 ncm-dbt-03 587028 500 4 347 149 -291.96 ± 21.96 100 143 7 0 0 -739.05 ± 163.27
476479 ncm-dbt-01 584958 500 2 343 155 -289.35 ± 21.35 97 147 6 0 0 -766.17 ± 188.02
476478 ncm-dbt-04 569270 500 7 352 141 -294.6 ± 22.27 102 141 7 0 0 -739.05 ± 163.27
476477 ncm-dbt-05 585169 500 8 354 138 -295.94 ± 23.63 106 135 8 1 0 -676.08 ± 142.43
476476 ncm-dbt-02 592893 500 6 348 146 -290.65 ± 21.81 99 144 7 0 0 -739.05 ± 163.27
476475 ncm-dbt-03 583908 500 5 355 140 -301.32 ± 23.06 107 136 7 0 0 -739.05 ± 163.27
476474 ncm-dbt-01 583614 500 4 355 141 -302.69 ± 22.9 107 137 6 0 0 -766.17 ± 188.02
476473 ncm-dbt-04 569350 500 3 345 152 -290.65 ± 20.88 96 150 4 0 0 -837.28 ± 240.94
476472 ncm-dbt-05 585126 500 3 357 140 -306.83 ± 23.38 110 134 6 0 0 -766.17 ± 188.02
476471 ncm-dbt-02 588345 500 1 360 139 -313.9 ± 22.48 110 139 1 0 0 -1078.89 ± 154.95
476470 ncm-dbt-03 586562 500 4 357 139 -305.44 ± 22.89 108 137 5 0 0 -798.18 ± 231.48
476469 ncm-dbt-01 584790 500 3 360 137 -311.05 ± 22.86 110 137 3 0 0 -887.58 ± 222.18
476468 ncm-dbt-04 570308 500 4 358 138 -306.83 ± 23.05 109 136 5 0 0 -798.18 ± 231.48
476467 ncm-dbt-05 583196 500 2 363 135 -316.79 ± 23.85 115 131 4 0 0 -837.28 ± 240.94
476466 ncm-dbt-02 587367 500 6 365 129 -313.9 ± 24.53 116 127 7 0 0 -739.05 ± 163.27
476465 ncm-dbt-03 585674 500 1 362 137 -316.79 ± 23.15 113 135 2 0 0 -958.31 ± 196.57
476464 ncm-dbt-01 585548 500 5 361 134 -309.64 ± 23.37 111 134 5 0 0 -798.18 ± 231.48
476463 ncm-dbt-02 594932 500 5 371 124 -324.16 ± 25.73 123 120 7 0 0 -739.05 ± 163.27
476462 ncm-dbt-03 579413 500 5 391 104 -356.2 ± 29.19 142 102 6 0 0 -766.17 ± 188.02
476461 ncm-dbt-04 588047 500 2 374 124 -333.31 ± 25.36 125 122 3 0 0 -887.58 ± 222.18
476460 ncm-dbt-05 588217 500 4 368 128 -321.18 ± 24.35 118 128 4 0 0 -837.28 ± 240.94
476459 ncm-dbt-01 585084 32 0 23 9 -314.28 ± 92.82 7 9 0 0 0 -1199.83 ± 129.46
476458 ncm-dbt-02 590396 16 0 11 5 -292.66 ± 121.99 3 5 0 0 0 -1199.83 ± 190.04
476457 ncm-dbt-05 583196 16 0 13 3 -393.61 ± 269.53 5 3 0 0 0 -1199.83 ± 190.04
476456 ncm-dbt-03 586350 24 0 20 4 -416.18 ± 204.45 8 4 0 0 0 -1199.83 ± 154.57
476455 ncm-dbt-04 569909 30 0 21 9 -301.17 ± 89.21 6 9 0 0 0 -1199.83 ± 135.09

Commit

Commit ID 4d647428d8f6b02a404e6b7fda5dbbf17090f271
Author Joost VandeVondele
Date 2018-05-08 23:42:34 UTC
Remove goto, limit skipping to NMP This patch simplifies the control flow in search(), removing an if and a goto. A side effect of the patch is that Stockfish is now a little bit more selective at low depths, because we allow razoring, futility pruning and probcut pruning after a null move. passed STC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 32035 W: 6523 L: 6422 D: 19090 http://tests.stockfishchess.org/tests/view/5af142ca0ebc597fb3d39bb6 passed LTC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 41431 W: 6187 L: 6097 D: 29147 http://tests.stockfishchess.org/tests/view/5af148770ebc597fb3d39bc1 Ideas for further work: • Use the nodes credit opened by the patch (the increased selectivity) to try somewhat higher razoring, futility or probcut margins at [0..4]. Bench: 4855031
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