Dev Builds » 20251221-1443

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 06:46:59 581198 4016 1771 402 1843 +123.37 ± 4.5 1 24 618 1335 30 +280.0 ± 13.63
ncm-dbt-02 06:45:01 586236 4000 1693 395 1912 +116.97 ± 4.59 2 35 648 1293 22 +262.83 ± 13.33
ncm-dbt-03 06:45:30 585610 4000 1696 365 1939 +120.18 ± 4.51 0 34 622 1323 21 +272.39 ± 13.61
ncm-dbt-04 06:45:34 565841 3992 1706 409 1877 +117.13 ± 4.64 2 34 654 1277 29 +261.23 ± 13.26
ncm-dbt-05 06:45:34 586300 3992 1713 370 1909 +121.62 ± 4.58 0 37 606 1326 27 +275.03 ± 13.81
20000 8579 1941 9480 +119.85 ± 2.04 5 164 3148 6554 129 +270.21 ± 6.04

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
447213 ncm-dbt-01 578547 16 6 1 9 +112.26 ± 65.75 0 0 3 5 0 +254.61 ± 287.37
447212 ncm-dbt-04 565941 492 217 56 219 +118.03 ± 14.02 0 5 83 150 8 +253.0 ± 37.5
447211 ncm-dbt-05 614215 492 215 48 229 +122.8 ± 14.32 0 10 64 167 5 +274.55 ± 42.92
447210 ncm-dbt-03 584622 500 212 32 256 +130.94 ± 12.17 0 2 69 176 3 +306.84 ± 41.23
447209 ncm-dbt-02 584790 500 222 46 232 +127.76 ± 13.02 0 3 74 167 6 +288.06 ± 39.79
447208 ncm-dbt-01 582861 500 222 49 229 +125.38 ± 12.32 0 3 73 172 2 +290.66 ± 40.08
447207 ncm-dbt-04 564683 500 210 57 233 +109.83 ± 12.88 0 5 89 154 2 +243.0 ± 36.1
447206 ncm-dbt-05 580282 500 213 43 244 +123.02 ± 12.17 0 2 78 168 2 +282.94 ± 38.55
447205 ncm-dbt-03 585295 500 218 57 225 +116.0 ± 12.66 0 4 83 161 2 +261.07 ± 37.44
447204 ncm-dbt-02 585169 500 211 50 239 +116.0 ± 12.84 0 5 81 162 2 +261.07 ± 38.02
447203 ncm-dbt-01 582068 500 220 37 243 +133.34 ± 12.29 0 1 70 174 5 +309.64 ± 40.79
447202 ncm-dbt-05 585464 500 210 40 250 +123.02 ± 12.74 0 2 81 162 5 +275.45 ± 37.75
447201 ncm-dbt-04 568832 500 208 48 244 +115.22 ± 12.48 0 4 83 162 1 +261.07 ± 37.44
447200 ncm-dbt-03 588643 500 207 33 260 +126.17 ± 12.3 0 3 72 173 2 +293.29 ± 40.39
447199 ncm-dbt-02 585717 500 214 55 231 +114.45 ± 14.05 0 10 75 161 4 +251.89 ± 39.67
447198 ncm-dbt-01 581444 500 220 58 222 +116.77 ± 13.19 0 3 88 153 6 +254.16 ± 36.15
447197 ncm-dbt-04 567759 500 208 54 238 +110.6 ± 11.96 0 2 92 156 0 +249.64 ± 35.13
447196 ncm-dbt-05 582318 500 217 58 225 +114.45 ± 13.38 0 6 83 157 4 +251.89 ± 37.57
447195 ncm-dbt-03 583698 500 218 48 234 +123.02 ± 13.29 0 6 72 168 4 +277.93 ± 40.53
447194 ncm-dbt-02 586901 500 206 49 245 +112.91 ± 12.86 0 5 85 158 2 +251.89 ± 37.03
447193 ncm-dbt-01 581444 500 223 55 222 +121.45 ± 13.31 0 7 71 169 3 +275.45 ± 40.84
447192 ncm-dbt-04 561641 500 230 53 217 +128.55 ± 13.73 1 3 71 168 7 +290.66 ± 40.76
447191 ncm-dbt-05 581569 500 211 36 253 +126.97 ± 12.85 0 6 65 177 2 +295.94 ± 42.75
447190 ncm-dbt-02 587197 500 206 49 245 +112.91 ± 12.5 0 3 89 156 2 +251.89 ± 35.92
447189 ncm-dbt-03 587197 500 207 50 243 +112.91 ± 12.86 0 4 88 155 3 +249.64 ± 36.24
447188 ncm-dbt-01 579992 500 224 53 223 +123.81 ± 12.54 0 1 82 162 5 +277.93 ± 37.36
447187 ncm-dbt-04 564252 500 211 43 246 +121.45 ± 14.01 0 9 69 167 5 +270.57 ± 41.4
447186 ncm-dbt-05 579826 500 208 42 250 +119.89 ± 12.23 0 2 82 164 2 +273.0 ± 37.5
447185 ncm-dbt-02 587155 500 212 50 238 +116.78 ± 12.65 1 3 79 167 0 +270.57 ± 38.47
447184 ncm-dbt-03 583614 500 213 48 239 +119.11 ± 12.99 0 5 78 164 3 +268.17 ± 38.8
447183 ncm-dbt-01 581902 500 211 42 247 +122.24 ± 12.38 0 4 74 171 1 +282.94 ± 39.86
447182 ncm-dbt-04 566099 500 213 44 243 +122.24 ± 12.19 0 2 79 167 2 +280.42 ± 38.28
447181 ncm-dbt-05 582527 500 215 47 238 +121.45 ± 12.2 0 3 77 169 1 +280.42 ± 38.93
447180 ncm-dbt-02 587749 500 210 48 242 +116.77 ± 12.65 0 4 82 162 2 +263.42 ± 37.69
447179 ncm-dbt-03 586901 500 210 55 235 +111.37 ± 13.22 0 6 86 155 3 +245.2 ± 36.85
447178 ncm-dbt-01 579166 500 227 51 222 +127.76 ± 13.02 0 3 74 167 6 +288.06 ± 39.79
447177 ncm-dbt-04 567522 500 209 54 237 +111.37 ± 13.56 1 4 88 153 4 +245.2 ± 36.32
447176 ncm-dbt-05 584201 500 224 56 220 +121.45 ± 13.66 0 6 76 162 6 +268.17 ± 39.39
447175 ncm-dbt-02 585211 500 212 48 240 +118.33 ± 13.17 1 2 83 160 4 +265.78 ± 37.35
447174 ncm-dbt-03 584916 500 211 42 247 +122.24 ± 12.38 0 4 74 171 1 +282.94 ± 39.86
447173 ncm-dbt-01 583363 500 218 56 226 +116.78 ± 12.83 1 2 83 162 2 +265.78 ± 37.35

Commit

Commit ID a98c3f687816348dd8d047dd9229171d23c1bfe8
Author Timothy Herchen
Date 2025-12-21 14:43:32 UTC
Small threat-related cleanups Remove a couple unused things, mark `noRaysContaining` as `[[maybe_unused]]` (suggested by Viz) to silence a warning on GCC 10, update a comment, and replace inline constants closes https://github.com/official-stockfish/Stockfish/pull/6460 No functional change
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