Dev Builds » 20260706-0938

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 06:44:14 582948 4000 1817 293 1890 +139.4 ± 4.49 1 18 489 1440 52 +327.56 ± 15.39
ncm-dbt-02 06:45:48 590063 4014 1813 322 1879 +135.54 ± 4.3 1 19 500 1462 25 +323.37 ± 15.21
ncm-dbt-03 06:43:23 585557 4000 1797 308 1895 +135.86 ± 4.38 0 22 500 1445 33 +321.19 ± 15.22
ncm-dbt-04 06:44:20 567659 4002 1794 325 1883 +133.77 ± 4.37 0 20 524 1425 32 +314.01 ± 14.85
ncm-dbt-05 06:44:25 582821 3984 1802 304 1878 +137.37 ± 4.35 0 10 517 1422 43 +322.99 ± 14.9
20000 9023 1552 9425 +136.38 ± 1.96 2 89 2530 7194 185 +321.78 ± 6.75

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
477217 ncm-dbt-04 565626 2 1 0 1 +189.7 ± 55.98 0 0 0 1 0 +1129.65 ± 376.02
477216 ncm-dbt-02 590353 14 6 1 7 +129.72 ± 68.06 0 0 2 5 0 +311.09 ± 530.6
477215 ncm-dbt-05 579331 484 216 43 225 +129.92 ± 12.64 0 1 72 164 5 +297.42 ± 40.11
477214 ncm-dbt-03 586393 500 218 45 237 +125.38 ± 11.72 0 0 79 169 2 +290.66 ± 37.99
477213 ncm-dbt-04 568315 500 225 40 235 +134.95 ± 12.64 0 3 64 178 5 +315.35 ± 43.03
477212 ncm-dbt-01 583614 500 228 38 234 +138.99 ± 12.9 0 1 67 173 9 +318.25 ± 41.77
477211 ncm-dbt-02 589454 500 225 35 240 +138.99 ± 11.44 0 1 60 187 2 +339.63 ± 44.35
477210 ncm-dbt-05 583447 500 223 33 244 +138.99 ± 11.88 0 1 62 183 4 +333.32 ± 43.57
477209 ncm-dbt-03 583405 500 234 34 232 +147.19 ± 11.92 0 2 51 192 5 +363.2 ± 48.51
477208 ncm-dbt-01 581070 500 229 37 234 +140.62 ± 12.64 0 2 61 180 7 +330.23 ± 44.08
477207 ncm-dbt-04 569909 500 220 36 244 +134.15 ± 11.86 0 3 61 185 1 +324.17 ± 44.15
477206 ncm-dbt-02 592331 500 223 43 234 +130.94 ± 12.76 0 4 66 176 4 +304.07 ± 42.38
477205 ncm-dbt-05 583950 500 228 39 233 +138.18 ± 12.33 0 2 62 181 5 +327.18 ± 43.69
477204 ncm-dbt-03 585801 500 224 38 238 +135.76 ± 12.42 0 4 59 184 3 +324.17 ± 44.97
477203 ncm-dbt-01 580199 500 225 31 244 +142.26 ± 12.78 1 2 54 188 5 +346.12 ± 47.1
477202 ncm-dbt-04 565076 500 228 38 234 +138.99 ± 12.5 0 2 62 180 6 +327.18 ± 43.69
477201 ncm-dbt-02 588047 500 225 44 231 +131.74 ± 11.73 0 3 63 184 0 +318.25 ± 43.39
477200 ncm-dbt-05 580945 500 220 34 246 +135.76 ± 12.01 0 1 66 179 4 +321.19 ± 42.12
477199 ncm-dbt-03 587877 500 218 38 244 +130.94 ± 11.96 0 3 65 181 1 +312.48 ± 42.67
477198 ncm-dbt-01 583196 500 233 34 233 +146.36 ± 12.81 0 1 59 180 10 +342.85 ± 44.76
477197 ncm-dbt-04 565469 500 231 43 226 +137.37 ± 12.36 0 2 63 180 5 +324.17 ± 43.32
477196 ncm-dbt-02 591986 500 231 49 220 +132.54 ± 13.28 1 2 67 174 6 +306.84 ± 41.99
477195 ncm-dbt-05 585717 500 237 36 227 +148.01 ± 12.53 0 0 59 181 10 +349.43 ± 44.59
477194 ncm-dbt-03 586816 500 229 43 228 +135.76 ± 12.62 0 2 66 176 6 +315.35 ± 42.24
477193 ncm-dbt-01 583572 500 226 39 235 +136.56 ± 12.98 0 5 58 182 5 +321.19 ± 45.36
477192 ncm-dbt-04 568434 500 225 45 230 +130.94 ± 11.96 0 0 74 172 4 +304.07 ± 39.39
477191 ncm-dbt-02 587070 500 226 35 239 +139.8 ± 10.95 0 0 60 189 1 +346.11 ± 44.19
477190 ncm-dbt-05 580655 500 226 44 230 +132.54 ± 12.71 0 1 73 169 7 +301.33 ± 39.86
477189 ncm-dbt-03 586308 500 235 38 227 +144.71 ± 12.47 0 2 56 185 7 +346.12 ± 46.15
477188 ncm-dbt-01 582987 500 222 36 242 +135.76 ± 12.42 0 3 62 181 4 +321.19 ± 43.77
477187 ncm-dbt-04 567165 500 224 30 246 +142.25 ± 12.78 0 4 54 186 6 +339.63 ± 47.1
477186 ncm-dbt-02 589283 500 227 40 233 +136.56 ± 13.17 0 4 62 177 7 +315.35 ± 43.81
477185 ncm-dbt-04 568116 500 217 45 238 +124.6 ± 12.14 0 1 79 167 3 +285.49 ± 38.15
477184 ncm-dbt-03 584495 500 224 32 244 +140.62 ± 12.44 0 2 60 182 6 +333.32 ± 44.47
477183 ncm-dbt-05 584874 500 234 34 232 +147.19 ± 11.47 0 1 52 193 4 +366.78 ± 47.92
477182 ncm-dbt-01 584622 500 233 38 229 +143.07 ± 12.54 0 1 61 180 8 +336.46 ± 43.96
477181 ncm-dbt-02 592936 500 226 37 237 +138.18 ± 11.26 0 1 60 188 1 +339.63 ± 44.35
477180 ncm-dbt-05 583656 500 218 41 241 +128.55 ± 12.63 0 3 71 172 4 +295.94 ± 40.69
477179 ncm-dbt-03 583363 500 215 40 245 +126.97 ± 13.22 0 7 64 176 3 +293.29 ± 43.07
477178 ncm-dbt-04 570829 500 223 48 229 +126.97 ± 12.66 0 5 67 176 2 +295.94 ± 42.08
477177 ncm-dbt-01 584327 500 221 40 239 +131.74 ± 12.54 0 3 67 176 4 +306.84 ± 41.99
477176 ncm-dbt-02 589112 500 224 38 238 +135.76 ± 12.62 0 4 60 182 4 +321.19 ± 44.57

Commit

Commit ID eca43a97efd2cf0c9b7153c71b85f35e0fd1f5ca
Author mstembera
Date 2026-07-06 09:38:27 UTC
Remove unnecessary memset(), memcpy() from NetworkArcitecture::propagate() Since https://github.com/official-stockfish/Stockfish/pull/6938 this is no longer needed. closes https://github.com/official-stockfish/Stockfish/pull/6950 No functional change
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