Dev Builds » 20250125-1942

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 06:54:21 574279 4018 1574 517 1927 +93.6 ± 4.95 1 89 798 1094 27 +197.01 ± 12.02
ncm-dbt-02 06:54:11 574785 3998 1621 504 1873 +99.72 ± 4.91 1 82 737 1157 22 +213.99 ± 12.53
ncm-dbt-03 06:53:00 577208 3992 1583 493 1916 +97.33 ± 4.91 2 81 759 1133 21 +208.23 ± 12.34
ncm-dbt-04 06:53:50 559820 4006 1583 524 1899 +94.08 ± 4.78 2 75 799 1116 11 +202.25 ± 11.99
ncm-dbt-05 06:53:36 573679 3986 1582 505 1899 +96.27 ± 4.99 2 88 759 1119 25 +204.48 ± 12.35
20000 7943 2543 9514 +96.19 ± 2.2 8 415 3852 5619 106 +205.13 ± 5.47

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
397464 ncm-dbt-05 582861 36 15 3 18 +120.38 ± 42.9 0 0 6 12 0 +279.53 ± 158.53
397463 ncm-dbt-02 587579 44 20 4 20 +132.37 ± 37.5 0 0 6 16 0 +320.6 ± 163.6
397462 ncm-dbt-04 570709 46 19 8 19 +84.72 ± 43.97 0 1 10 12 0 +180.92 ± 113.26
397461 ncm-dbt-03 586858 52 22 8 22 +95.89 ± 54.23 0 3 7 15 1 +190.85 ± 134.45
397460 ncm-dbt-01 583824 56 24 9 23 +95.38 ± 43.67 0 2 9 17 0 +207.81 ± 121.67
397459 ncm-dbt-05 585970 500 195 58 247 +97.69 ± 14.58 0 14 89 143 4 +206.01 ± 36.33
397458 ncm-dbt-02 586139 500 194 68 238 +89.48 ± 13.69 0 12 101 136 1 +190.85 ± 33.97
397457 ncm-dbt-04 568315 500 197 75 228 +86.52 ± 13.47 0 10 110 128 2 +181.7 ± 32.28
397456 ncm-dbt-01 585843 500 193 70 237 +87.26 ± 13.01 0 7 115 126 2 +183.51 ± 31.24
397455 ncm-dbt-03 586731 500 198 69 233 +91.71 ± 14.04 0 12 100 135 3 +192.71 ± 34.15
397454 ncm-dbt-05 582193 500 195 70 235 +88.74 ± 14.13 0 11 108 126 5 +181.7 ± 32.68
397453 ncm-dbt-02 585759 500 212 54 234 +113.68 ± 13.04 0 4 88 154 4 +249.64 ± 36.24
397452 ncm-dbt-03 586393 500 203 64 233 +99.2 ± 13.83 0 11 91 146 2 +213.85 ± 35.9
397451 ncm-dbt-04 568752 500 206 58 236 +106.01 ± 14.2 1 10 81 156 2 +234.38 ± 38.14
397450 ncm-dbt-01 584243 500 200 74 226 +89.48 ± 14.59 0 17 92 139 2 +189.0 ± 35.7
397449 ncm-dbt-05 586689 500 200 76 224 +88.0 ± 13.81 0 13 101 135 1 +187.16 ± 33.99
397448 ncm-dbt-02 583028 500 197 78 225 +84.3 ± 14.18 0 12 112 121 5 +171.02 ± 32.04
397447 ncm-dbt-03 585674 500 195 72 233 +87.26 ± 14.83 1 15 97 134 3 +183.51 ± 34.76
397446 ncm-dbt-04 569151 500 186 54 260 +93.95 ± 13.29 0 10 98 142 0 +204.07 ± 34.47
397445 ncm-dbt-01 579868 500 206 69 225 +97.69 ± 13.97 0 9 100 136 5 +204.07 ± 34.04
397444 ncm-dbt-05 586646 500 201 62 237 +99.2 ± 13.83 0 9 97 140 4 +209.91 ± 34.63
397443 ncm-dbt-03 586012 500 207 59 234 +106.01 ± 13.39 1 5 91 151 2 +234.38 ± 35.72
397442 ncm-dbt-04 569709 500 209 68 223 +100.7 ± 12.86 0 7 95 148 0 +221.9 ± 34.93
397441 ncm-dbt-02 583405 500 202 54 244 +106.01 ± 13.56 0 8 89 150 3 +230.16 ± 36.26
397440 ncm-dbt-01 583866 500 192 62 246 +92.45 ± 13.59 0 10 102 136 2 +196.45 ± 33.71
397439 ncm-dbt-05 586520 500 203 53 244 +107.54 ± 13.4 0 8 86 154 2 +236.51 ± 36.93
397438 ncm-dbt-03 587537 500 183 66 251 +82.83 ± 14.58 0 16 105 125 4 +169.27 ± 33.34
397437 ncm-dbt-02 587113 500 204 54 242 +107.54 ± 14.05 0 12 78 158 2 +236.51 ± 38.85
397436 ncm-dbt-04 570589 500 193 66 241 +90.22 ± 13.55 0 11 102 136 1 +192.71 ± 33.75
397435 ncm-dbt-01 585928 500 190 55 255 +96.19 ± 13.32 0 7 104 136 3 +204.07 ± 33.17
397434 ncm-dbt-03 498421 500 200 58 242 +101.46 ± 12.87 0 7 94 149 0 +223.94 ± 35.14
397433 ncm-dbt-01 494901 500 185 60 255 +88.74 ± 15.14 0 18 94 133 5 +181.7 ± 35.31
397432 ncm-dbt-04 478643 500 205 58 237 +105.25 ± 13.22 0 5 97 144 4 +226.0 ± 34.38
397431 ncm-dbt-05 470935 500 205 60 235 +103.73 ± 14.95 1 13 80 152 4 +223.94 ± 38.31
397430 ncm-dbt-02 485909 500 204 61 235 +102.22 ± 13.21 0 8 92 149 1 +223.94 ± 35.61
397429 ncm-dbt-03 587282 440 177 42 221 +110.14 ± 13.69 0 4 79 135 2 +243.3 ± 38.3
397428 ncm-dbt-05 582778 450 170 54 226 +91.63 ± 14.71 0 11 89 123 2 +193.95 ± 36.25
397427 ncm-dbt-04 569310 460 168 69 223 +75.96 ± 14.1 0 13 105 112 0 +159.97 ± 33.14
397426 ncm-dbt-02 587070 454 193 60 201 +104.85 ± 15.67 1 11 73 138 4 +226.36 ± 40.17
397425 ncm-dbt-01 584201 462 181 56 225 +96.4 ± 15.05 1 11 83 134 2 +208.34 ± 37.64
397424 ncm-dbt-03 589967 500 198 55 247 +102.22 ± 13.7 0 8 95 143 4 +217.85 ± 34.98
397423 ncm-dbt-05 598524 500 198 69 233 +91.71 ± 14.04 1 9 103 134 3 +194.57 ± 33.53
397422 ncm-dbt-02 587070 500 195 71 234 +88.0 ± 14.27 0 15 98 135 2 +185.33 ± 34.57
397421 ncm-dbt-04 573204 500 200 68 232 +93.95 ± 13.77 1 8 101 138 2 +202.15 ± 33.85
397420 ncm-dbt-01 585843 500 203 62 235 +100.7 ± 14.01 0 8 99 137 6 +209.91 ± 34.19

Commit

Commit ID 6c7c5c7e471c16f14518229428e51a3e00c0f1dd
Author Robert Nurnberg @ elitebook
Date 2025-01-25 19:42:50 UTC
Do not change TB cursed wins to draws if requested If Syzygy50MoveRule is false, do not calls to is_draw() need to be guarded. Also fixes a TB rootmove ranking issue in this case. closes https://github.com/official-stockfish/Stockfish/pull/5814 No functional change
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