Dev Builds » 20200123-1649

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 06:26:52 582543 4012 61 2592 1359 -258.09 ± 6.6 604 1324 77 1 0 -678.84 ± 39.43
ncm-dbt-02 06:25:26 585187 4000 53 2532 1415 -251.75 ± 6.35 561 1357 82 0 0 -671.7 ± 38.16
ncm-dbt-03 06:24:58 586697 4000 66 2620 1314 -262.53 ± 6.89 640 1275 84 1 0 -663.25 ± 37.69
ncm-dbt-04 06:25:24 567180 4000 48 2621 1331 -265.34 ± 6.79 641 1292 66 1 0 -704.84 ± 42.71
ncm-dbt-05 06:27:08 581535 3988 54 2593 1341 -261.46 ± 6.81 627 1286 80 1 0 -671.17 ± 38.66
20000 282 12958 6760 -259.79 ± 2.99 3073 6534 389 4 0 -677.41 ± 17.32

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
452094 ncm-dbt-01 582778 12 0 8 4 -279.22 ± 131.95 2 4 0 0 0 -1199.83 ± 215.27
452093 ncm-dbt-05 582611 488 13 321 154 -258.25 ± 21.47 83 142 19 0 0 -556.95 ± 83.31
452092 ncm-dbt-04 566533 500 2 327 171 -269.36 ± 18.69 80 165 5 0 0 -798.18 ± 231.48
452091 ncm-dbt-02 584076 500 3 319 178 -258.74 ± 17.09 70 176 4 0 0 -837.28 ± 240.94
452090 ncm-dbt-03 588899 500 9 341 150 -277.92 ± 21.17 92 148 10 0 0 -676.04 ± 124.55
452089 ncm-dbt-01 578013 500 7 323 170 -258.74 ± 18.82 76 164 10 0 0 -676.04 ± 124.55
452088 ncm-dbt-05 577930 500 4 330 166 -270.57 ± 19.13 82 162 6 0 0 -766.17 ± 188.02
452087 ncm-dbt-03 586774 500 9 329 162 -263.41 ± 20.22 83 154 13 0 0 -629.41 ± 104.8
452086 ncm-dbt-02 584285 500 10 325 165 -257.59 ± 18.95 76 163 11 0 0 -659.13 ± 116.77
452085 ncm-dbt-01 582318 500 6 325 169 -262.24 ± 18.41 76 167 7 0 0 -739.05 ± 163.27
452084 ncm-dbt-04 566533 500 7 327 166 -263.41 ± 20.22 83 154 13 0 0 -629.41 ± 104.8
452083 ncm-dbt-05 584117 500 9 319 172 -251.89 ± 18.76 72 167 10 1 0 -643.7 ± 122.54
452082 ncm-dbt-03 585970 500 12 328 160 -258.74 ± 19.63 79 158 13 0 0 -629.41 ± 104.8
452081 ncm-dbt-01 583363 500 6 326 168 -263.41 ± 18.55 77 166 7 0 0 -739.05 ± 163.27
452080 ncm-dbt-02 587537 500 6 309 185 -244.09 ± 16.95 63 177 10 0 0 -676.04 ± 124.55
452079 ncm-dbt-04 569749 500 5 315 180 -251.89 ± 17.68 69 172 9 0 0 -694.7 ± 134.18
452078 ncm-dbt-05 581319 500 5 327 168 -265.77 ± 18.84 79 164 7 0 0 -739.05 ± 163.27
452077 ncm-dbt-03 586774 500 10 323 167 -255.29 ± 18.93 75 163 12 0 0 -643.67 ± 110.29
452076 ncm-dbt-01 582611 500 7 328 165 -264.59 ± 20.36 83 156 10 1 0 -643.7 ± 122.54
452075 ncm-dbt-04 568077 500 7 334 159 -271.78 ± 19.86 85 157 8 0 0 -715.51 ± 146.53
452074 ncm-dbt-02 583447 500 4 316 180 -254.15 ± 17.68 70 172 8 0 0 -715.51 ± 146.53
452073 ncm-dbt-05 579661 500 5 313 182 -249.64 ± 16.82 65 178 7 0 0 -739.05 ± 163.27
452072 ncm-dbt-03 583572 500 6 336 158 -275.44 ± 20.01 87 156 7 0 0 -739.05 ± 163.27
452071 ncm-dbt-01 580572 500 11 325 164 -256.44 ± 19.07 76 162 12 0 0 -643.67 ± 110.29
452070 ncm-dbt-04 569310 500 12 336 152 -268.16 ± 21.59 89 147 13 1 0 -603.86 ± 103.96
452069 ncm-dbt-02 584201 500 10 317 173 -248.52 ± 19.1 73 161 16 0 0 -592.27 ± 92.24
452068 ncm-dbt-05 579455 500 6 333 161 -271.78 ± 20.43 87 153 10 0 0 -676.04 ± 124.55
452067 ncm-dbt-01 584958 500 7 318 175 -253.02 ± 17.54 69 173 8 0 0 -715.51 ± 146.53
452066 ncm-dbt-03 586604 500 4 325 171 -264.59 ± 18.98 78 166 5 1 0 -739.1 ± 208.89
452065 ncm-dbt-02 586012 500 6 317 177 -253.02 ± 18.1 71 169 10 0 0 -676.04 ± 124.55
452064 ncm-dbt-04 563197 500 3 321 176 -261.07 ± 17.38 72 174 4 0 0 -837.28 ± 240.94
452063 ncm-dbt-05 583908 500 7 333 160 -270.57 ± 20.83 88 150 12 0 0 -643.67 ± 110.29
452062 ncm-dbt-01 583489 500 8 318 174 -251.89 ± 18.5 72 166 12 0 0 -643.67 ± 110.29
452061 ncm-dbt-04 561369 500 6 317 177 -253.02 ± 17.26 68 175 7 0 0 -739.05 ± 163.27
452060 ncm-dbt-03 587367 500 8 318 174 -251.89 ± 18.23 71 168 11 0 0 -659.13 ± 116.77
452059 ncm-dbt-02 585759 500 10 316 174 -247.41 ± 18.18 69 168 13 0 0 -629.41 ± 104.8
452058 ncm-dbt-03 587622 500 8 320 172 -254.15 ± 19.05 75 162 13 0 0 -629.41 ± 104.8
452057 ncm-dbt-04 572679 500 6 344 150 -285.48 ± 21.2 95 148 7 0 0 -739.05 ± 163.27
452056 ncm-dbt-05 583279 500 5 317 178 -254.15 ± 17.97 71 170 9 0 0 -694.7 ± 134.18
452055 ncm-dbt-01 584790 500 9 321 170 -254.15 ± 18.52 73 166 11 0 0 -659.13 ± 116.77
452054 ncm-dbt-02 586181 500 4 313 183 -250.76 ± 17.81 69 171 10 0 0 -676.04 ± 124.55

Commit

Commit ID 75dfdeac119d0ce71c36ba5ab4f33318f589b158
Author protonspring
Date 2020-01-23 16:49:10 UTC
Simplify KPK classify This is a non-functional simplification. If we use the "side to move" of the entry instead of the template, one of the classify methods goes away. Furthermore, I've resolved the colors in some of the statements (we're already assuming direction using NORTH), and used stm (side to move) instead of "us," since this is much clearer to me. This is not tested because it is non-functional, only applies building the bitbase and there are no changes to the binary (on my machine). Closes https://github.com/official-stockfish/Stockfish/pull/2485 No functional change
Copyright 2011–2026 Next Chess Move LLC