Dev Builds » 20211209-1950

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 06:52:09 584294 4012 849 1181 1982 -28.82 ± 5.28 11 636 1035 322 2 -56.43 ± 10.57
ncm-dbt-02 06:51:56 586192 4002 836 1204 1962 -32.04 ± 5.28 10 657 1029 301 4 -63.55 ± 10.6
ncm-dbt-03 06:50:16 587365 4000 845 1165 1990 -27.85 ± 5.25 4 642 1025 328 1 -55.54 ± 10.62
ncm-dbt-04 06:51:22 571677 4012 857 1196 1959 -29.43 ± 5.14 11 616 1081 297 1 -57.5 ± 10.3
ncm-dbt-05 06:50:50 585090 3974 842 1187 1945 -30.24 ± 5.14 12 609 1079 286 1 -58.96 ± 10.3
20000 4229 5933 9838 -29.67 ± 2.33 48 3160 5249 1534 9 -58.39 ± 4.68

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
376180 ncm-dbt-02 584916 2 1 1 0 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47
376179 ncm-dbt-01 583614 12 0 4 8 -120.31 ± 75.55 0 4 2 0 0 -279.41 ± 548.26
376178 ncm-dbt-04 571793 12 4 5 3 -29.01 ± 98.94 0 2 3 1 0 -58.45 ± 226.57
376177 ncm-dbt-05 585421 474 94 150 230 -41.24 ± 15.06 2 82 123 30 0 -80.58 ± 30.65
376176 ncm-dbt-03 587622 500 112 153 235 -28.55 ± 15.54 2 82 121 45 0 -54.65 ± 31.04
376175 ncm-dbt-02 588643 500 99 155 246 -39.08 ± 14.7 1 88 127 34 0 -77.71 ± 30.23
376174 ncm-dbt-01 583405 500 94 157 249 -44.01 ± 14.47 1 91 128 30 0 -88.0 ± 30.06
376173 ncm-dbt-04 572276 500 111 144 245 -22.96 ± 14.78 1 74 132 43 0 -44.72 ± 29.63
376172 ncm-dbt-05 580738 500 110 154 236 -30.65 ± 14.42 2 75 138 35 0 -58.93 ± 28.79
376171 ncm-dbt-03 588558 500 99 142 259 -29.95 ± 14.76 1 80 130 39 0 -58.93 ± 29.87
376170 ncm-dbt-02 583154 500 96 145 259 -34.16 ± 15.16 2 84 125 39 0 -66.1 ± 30.52
376169 ncm-dbt-01 585421 500 97 144 259 -32.75 ± 14.95 1 84 126 39 0 -64.66 ± 30.39
376168 ncm-dbt-04 570869 500 102 150 248 -33.46 ± 14.74 2 80 132 36 0 -64.66 ± 29.59
376167 ncm-dbt-05 585548 500 112 154 234 -29.25 ± 13.92 1 73 143 33 0 -57.5 ± 28.1
376166 ncm-dbt-03 590310 500 117 146 237 -20.18 ± 15.45 0 79 122 48 1 -41.89 ± 30.91
376165 ncm-dbt-02 589112 500 99 151 250 -36.26 ± 15.66 4 83 125 37 1 -68.99 ± 30.52
376164 ncm-dbt-01 584076 500 106 145 249 -27.16 ± 14.95 1 78 131 39 1 -54.65 ± 29.74
376163 ncm-dbt-04 570428 500 92 149 259 -39.78 ± 14.08 1 84 136 29 0 -79.17 ± 28.96
376162 ncm-dbt-05 586731 500 101 146 253 -31.35 ± 13.52 0 75 145 30 0 -63.23 ± 27.78
376161 ncm-dbt-03 585253 500 92 156 252 -44.72 ± 13.55 0 88 138 24 0 -90.97 ± 28.58
376160 ncm-dbt-02 588260 500 110 146 244 -25.06 ± 14.68 1 75 133 41 0 -48.96 ± 29.49
376159 ncm-dbt-04 572558 500 110 154 236 -30.65 ± 14.29 1 77 137 35 0 -60.36 ± 28.92
376158 ncm-dbt-01 583196 500 106 130 264 -16.69 ± 14.44 0 69 136 45 0 -33.46 ± 29.13
376157 ncm-dbt-05 586520 500 106 143 251 -25.76 ± 14.73 1 76 132 41 0 -50.38 ± 29.62
376156 ncm-dbt-03 586604 500 110 160 230 -34.86 ± 14.83 0 88 124 38 0 -70.44 ± 30.65
376155 ncm-dbt-02 581735 500 110 148 242 -26.45 ± 14.52 1 75 135 39 0 -51.8 ± 29.22
376154 ncm-dbt-04 571230 500 116 137 247 -14.6 ± 15.03 1 68 133 47 1 -29.25 ± 29.52
376153 ncm-dbt-01 582027 500 126 147 227 -14.6 ± 15.4 1 71 127 50 1 -29.25 ± 30.28
376152 ncm-dbt-05 583908 500 107 153 240 -32.05 ± 15.15 2 81 129 37 1 -63.23 ± 29.99
376151 ncm-dbt-03 586097 500 101 135 264 -23.66 ± 14.19 0 73 138 39 0 -47.55 ± 28.83
376150 ncm-dbt-02 586477 500 116 148 236 -22.27 ± 14.6 0 74 135 40 1 -46.13 ± 29.23
376149 ncm-dbt-04 571110 500 117 145 238 -19.48 ± 15.03 3 67 135 45 0 -34.86 ± 29.25
376148 ncm-dbt-01 586901 500 110 149 241 -27.15 ± 15.08 2 77 129 42 0 -51.8 ± 30.01
376147 ncm-dbt-05 585126 500 104 147 249 -29.95 ± 14.37 1 77 136 36 0 -58.93 ± 29.06
376146 ncm-dbt-03 586604 500 109 136 255 -18.78 ± 15.1 1 73 128 48 0 -36.26 ± 30.15
376145 ncm-dbt-02 584748 500 100 160 240 -41.89 ± 14.61 1 89 130 29 1 -85.04 ± 29.79
376144 ncm-dbt-04 572396 500 108 150 242 -29.25 ± 13.23 0 71 150 29 0 -58.93 ± 27.08
376143 ncm-dbt-01 583531 500 104 162 234 -40.48 ± 15.17 2 90 122 36 0 -79.17 ± 30.91
376142 ncm-dbt-05 586731 500 108 140 252 -22.26 ± 15.11 3 70 133 44 0 -40.48 ± 29.51
376141 ncm-dbt-03 587877 500 105 137 258 -22.27 ± 15.11 0 79 124 47 0 -44.72 ± 30.66
376140 ncm-dbt-04 572437 500 97 162 241 -45.42 ± 14.94 2 93 123 32 0 -89.48 ± 30.76
376139 ncm-dbt-02 588686 500 105 150 245 -31.36 ± 15.48 0 89 118 42 1 -64.66 ± 31.43
376138 ncm-dbt-01 586477 500 106 143 251 -25.76 ± 14.98 3 72 134 41 0 -47.55 ± 29.36

Commit

Commit ID 8e8234593190804babd36b8a8862e2bb1fc65bb7
Author Michael Chaly
Date 2021-12-09 19:50:00 UTC
Adjust singular extension depth restriction This patch is a modification of original idea by lonfom169 which had a good yellow run - do singular extension search with depth threshold 6 unless this is a PvNode with is a part of a PV line - for them set threshold to 8 instead. Passed STC https://tests.stockfishchess.org/tests/view/61b1080406b4c2dcb1b1128c LLR: 2.95 (-2.94,2.94) <0.00,2.50> Total: 84352 W: 21917 L: 21555 D: 40880 Ptnml(0-2): 288, 9524, 22185, 9896, 283 Passed LTC https://tests.stockfishchess.org/tests/view/61b1860a06b4c2dcb1b134a1 LLR: 2.95 (-2.94,2.94) <0.50,3.00> Total: 63520 W: 16575 L: 16237 D: 30708 Ptnml(0-2): 27, 6519, 18350, 6817, 47 https://github.com/official-stockfish/Stockfish/pull/3840 bench 4729473
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