Dev Builds » 20250824-1740

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 06:44:07 583877 4000 1661 440 1899 +109.55 ± 4.76 1 56 689 1229 25 +240.01 ± 12.95
ncm-dbt-02 06:44:19 585737 4000 1639 448 1913 +106.68 ± 4.78 1 62 704 1211 22 +232.79 ± 12.81
ncm-dbt-03 06:45:05 583847 4008 1670 441 1897 +110.08 ± 4.79 0 64 671 1245 24 +241.53 ± 13.14
ncm-dbt-04 06:44:09 568082 4000 1659 443 1898 +109.07 ± 4.79 3 60 674 1244 19 +240.82 ± 13.11
ncm-dbt-05 06:46:12 578078 3992 1632 430 1930 +107.96 ± 4.69 1 55 697 1227 16 +237.96 ± 12.87
20000 8261 2202 9537 +108.67 ± 2.13 6 297 3435 6156 106 +238.61 ± 5.8

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
428979 ncm-dbt-03 582736 8 4 2 2 +88.62 ± 93.84 0 0 2 2 0 +190.67 ± 458.56
428978 ncm-dbt-05 577151 492 200 47 245 +111.74 ± 13.35 0 6 84 153 3 +246.17 ± 37.31
428977 ncm-dbt-02 587409 500 202 60 238 +101.46 ± 13.85 0 9 94 143 4 +215.85 ± 35.23
428976 ncm-dbt-01 583572 500 199 50 251 +106.77 ± 13.39 0 7 90 150 3 +232.26 ± 35.99
428975 ncm-dbt-04 567958 500 209 53 238 +112.14 ± 12.87 0 4 89 154 3 +247.41 ± 36.02
428974 ncm-dbt-03 585885 500 202 65 233 +97.69 ± 14.43 0 14 88 145 3 +207.95 ± 36.54
428973 ncm-dbt-05 577971 500 211 62 227 +106.77 ± 13.39 0 6 93 147 4 +230.16 ± 35.29
428972 ncm-dbt-02 582444 500 207 58 235 +106.77 ± 13.06 0 5 94 148 3 +232.26 ± 35.0
428971 ncm-dbt-01 582778 500 214 48 238 +119.89 ± 13.33 0 8 70 170 2 +273.0 ± 41.13
428970 ncm-dbt-04 569669 500 222 65 213 +112.91 ± 13.39 0 6 85 155 4 +247.41 ± 37.09
428969 ncm-dbt-03 580365 500 210 54 236 +112.14 ± 13.22 0 7 82 159 2 +249.64 ± 37.86
428968 ncm-dbt-05 576905 500 208 56 236 +109.07 ± 12.7 0 5 89 155 1 +243.0 ± 36.1
428967 ncm-dbt-01 583950 500 207 50 243 +112.91 ± 13.22 0 6 84 157 3 +249.64 ± 37.33
428966 ncm-dbt-02 587070 500 197 48 255 +106.77 ± 13.06 0 8 85 157 0 +238.66 ± 37.17
428965 ncm-dbt-04 565587 500 206 57 237 +106.77 ± 13.39 0 9 84 156 1 +236.51 ± 37.42
428964 ncm-dbt-03 584537 500 199 51 250 +106.01 ± 12.53 0 5 92 153 0 +236.51 ± 35.43
428963 ncm-dbt-05 581070 500 195 52 253 +102.22 ± 14.02 0 12 85 151 2 +221.9 ± 37.21
428962 ncm-dbt-01 583489 500 211 51 238 +115.23 ± 13.72 1 4 84 156 5 +254.16 ± 37.27
428961 ncm-dbt-02 584622 500 202 56 242 +104.49 ± 13.88 1 7 90 149 3 +228.08 ± 36.04
428960 ncm-dbt-04 566967 500 198 53 249 +103.73 ± 14.19 0 13 81 154 2 +226.0 ± 38.11
428959 ncm-dbt-03 584874 500 205 48 247 +112.91 ± 13.39 0 8 79 161 2 +251.89 ± 38.63
428958 ncm-dbt-05 579496 500 206 64 230 +101.46 ± 13.2 1 6 93 150 0 +226.0 ± 35.35
428957 ncm-dbt-01 584874 500 208 61 231 +105.25 ± 13.56 0 8 90 149 3 +228.08 ± 36.04
428956 ncm-dbt-04 568156 500 210 52 238 +113.68 ± 13.55 1 7 76 165 1 +258.75 ± 39.42
428955 ncm-dbt-02 586181 500 206 61 233 +103.73 ± 12.88 0 4 100 143 3 +223.94 ± 33.69
428954 ncm-dbt-03 585421 500 214 57 229 +112.91 ± 14.38 0 10 79 155 6 +243.0 ± 38.64
428953 ncm-dbt-01 584453 500 205 60 235 +103.73 ± 13.22 0 6 96 145 3 +223.94 ± 34.66
428952 ncm-dbt-02 585506 500 210 60 230 +107.54 ± 14.52 0 12 81 152 5 +230.16 ± 38.13
428951 ncm-dbt-04 568236 500 212 54 234 +113.68 ± 12.68 0 4 86 158 2 +254.16 ± 36.71
428950 ncm-dbt-05 573932 500 198 53 249 +103.73 ± 13.55 0 8 92 147 3 +223.94 ± 35.61
428949 ncm-dbt-03 582193 500 214 49 237 +119.11 ± 13.17 0 4 82 159 5 +263.42 ± 37.69
428948 ncm-dbt-01 583363 500 216 55 229 +116.0 ± 13.71 0 7 80 158 5 +254.16 ± 38.36
428947 ncm-dbt-02 587834 500 218 54 228 +118.33 ± 12.81 0 5 78 165 2 +268.17 ± 38.8
428946 ncm-dbt-04 566414 500 202 56 242 +104.49 ± 13.55 0 9 88 151 2 +228.08 ± 36.51
428945 ncm-dbt-03 583531 500 210 53 237 +112.91 ± 13.39 0 9 76 164 1 +254.16 ± 39.42
428944 ncm-dbt-05 581527 500 209 46 245 +117.55 ± 12.46 0 4 80 165 1 +268.17 ± 38.21
428943 ncm-dbt-02 584832 500 197 51 252 +104.49 ± 14.04 0 12 82 154 2 +228.08 ± 37.89
428942 ncm-dbt-01 584537 500 201 65 234 +96.94 ± 13.49 0 10 95 144 1 +209.91 ± 35.06
428941 ncm-dbt-04 571672 500 200 53 247 +105.25 ± 14.66 2 8 85 151 4 +230.16 ± 37.2
428940 ncm-dbt-03 585084 500 212 62 226 +107.54 ± 13.73 0 7 91 147 5 +230.16 ± 35.78
428939 ncm-dbt-05 576578 500 205 50 245 +111.37 ± 13.39 0 8 81 159 2 +247.41 ± 38.13

Commit

Commit ID 47d60a50b6b2704802641763335166c0b8a83453
Author Disservin
Date 2025-08-24 17:40:40 UTC
CI: fix typo in flag closes https://github.com/official-stockfish/Stockfish/pull/6247 No functional change
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