Dev Builds » 20251114-1628

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 06:44:29 582010 4000 1682 435 1883 +112.04 ± 4.66 0 49 677 1252 22 +247.69 ± 13.05
ncm-dbt-02 06:46:49 586715 4000 1676 391 1933 +115.71 ± 4.62 0 45 646 1288 21 +258.75 ± 13.37
ncm-dbt-03 06:44:52 584857 4000 1694 409 1897 +115.71 ± 4.62 0 36 674 1259 31 +255.87 ± 13.05
ncm-dbt-04 06:47:11 566931 4010 1690 373 1947 +118.5 ± 4.58 0 42 626 1315 22 +266.9 ± 13.59
ncm-dbt-05 06:47:30 582943 3990 1681 424 1885 +113.31 ± 4.72 1 46 672 1247 29 +249.67 ± 13.1
20000 8423 2032 9545 +115.05 ± 2.08 1 218 3295 6361 125 +255.7 ± 5.91

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
441082 ncm-dbt-04 564997 10 4 0 6 +147.05 ± 74.68 0 0 1 4 0 +381.35 ± 516.06
441081 ncm-dbt-05 580406 490 212 60 218 +111.45 ± 13.39 1 5 81 157 1 +252.12 ± 38.05
441080 ncm-dbt-02 586689 500 219 40 241 +130.14 ± 13.16 0 6 63 177 4 +301.33 ± 43.45
441079 ncm-dbt-01 584495 500 210 53 237 +112.91 ± 12.69 0 6 81 163 0 +256.44 ± 38.07
441078 ncm-dbt-03 582360 500 210 48 242 +116.77 ± 13.01 0 4 84 158 4 +258.75 ± 37.2
441077 ncm-dbt-04 567442 500 213 44 243 +122.24 ± 12.76 0 2 82 161 5 +273.0 ± 37.5
441076 ncm-dbt-05 580904 500 203 40 257 +117.55 ± 13.0 0 4 83 159 4 +261.07 ± 37.44
441075 ncm-dbt-02 586477 500 204 45 251 +114.45 ± 13.03 0 6 81 161 2 +256.44 ± 38.07
441074 ncm-dbt-01 576701 500 228 55 217 +125.38 ± 12.12 0 3 72 174 1 +293.29 ± 40.39
441073 ncm-dbt-03 584622 500 215 55 230 +115.22 ± 13.88 0 6 85 152 7 +247.41 ± 37.09
441072 ncm-dbt-04 566533 500 212 44 244 +121.45 ± 12.77 0 2 83 160 5 +270.57 ± 37.24
441071 ncm-dbt-05 583950 500 216 56 228 +115.22 ± 13.03 0 3 89 153 5 +251.89 ± 35.92
441070 ncm-dbt-01 581194 500 212 66 222 +104.49 ± 14.19 0 13 80 155 2 +228.08 ± 38.34
441069 ncm-dbt-03 585379 500 212 54 234 +113.68 ± 12.31 0 1 93 153 3 +251.89 ± 34.78
441068 ncm-dbt-02 584453 500 206 43 251 +117.55 ± 12.82 0 6 76 167 1 +268.17 ± 39.39
441067 ncm-dbt-04 568752 500 203 39 258 +118.33 ± 13.0 0 7 73 169 1 +270.57 ± 40.25
441066 ncm-dbt-05 575476 500 213 44 243 +122.24 ± 12.57 0 4 75 169 2 +280.42 ± 39.57
441065 ncm-dbt-02 586435 500 209 37 254 +124.6 ± 13.45 0 6 71 168 5 +280.42 ± 40.83
441064 ncm-dbt-03 587028 500 211 44 245 +120.67 ± 12.6 0 3 80 164 3 +273.0 ± 38.12
441063 ncm-dbt-01 581236 500 213 49 238 +118.33 ± 13.35 0 5 81 159 5 +261.07 ± 38.02
441062 ncm-dbt-04 565587 500 205 59 236 +104.49 ± 13.39 0 8 90 150 2 +228.08 ± 36.04
441061 ncm-dbt-05 581777 500 204 58 238 +104.49 ± 13.71 0 9 89 149 3 +226.0 ± 36.29
441060 ncm-dbt-01 582402 500 204 61 235 +102.22 ± 13.37 0 8 93 147 2 +221.9 ± 35.4
441059 ncm-dbt-03 583237 500 218 49 233 +122.24 ± 12.94 0 4 77 165 4 +275.45 ± 39.01
441058 ncm-dbt-02 586097 500 211 61 228 +107.54 ± 12.88 0 4 95 148 3 +234.38 ± 34.71
441057 ncm-dbt-04 567007 500 214 41 245 +125.38 ± 12.89 0 5 70 172 3 +288.06 ± 41.11
441056 ncm-dbt-03 585253 500 200 50 250 +107.54 ± 13.23 0 7 88 153 2 +236.51 ± 36.44
441055 ncm-dbt-01 581943 500 204 51 245 +109.83 ± 13.73 0 7 88 150 5 +236.51 ± 36.44
441054 ncm-dbt-02 585253 500 206 51 243 +111.37 ± 12.51 0 4 88 157 1 +249.64 ± 36.24
441053 ncm-dbt-05 580572 500 207 49 244 +113.68 ± 13.55 0 7 82 157 4 +249.64 ± 37.86
441052 ncm-dbt-04 566928 500 218 52 230 +119.89 ± 12.79 0 4 79 164 3 +270.57 ± 38.47
441051 ncm-dbt-03 583656 500 211 56 233 +111.37 ± 13.39 0 4 93 147 6 +238.66 ± 35.13
441050 ncm-dbt-01 582819 500 203 53 244 +107.54 ± 12.88 0 3 98 145 4 +232.26 ± 33.99
441049 ncm-dbt-02 585126 500 203 53 244 +107.54 ± 13.06 0 6 90 152 2 +236.51 ± 35.94
441048 ncm-dbt-05 582778 500 216 56 228 +115.22 ± 13.72 0 8 78 160 4 +254.16 ± 38.89
441047 ncm-dbt-04 565744 500 212 48 240 +118.33 ± 13.17 0 8 71 170 1 +270.57 ± 40.83
441046 ncm-dbt-01 585295 500 208 47 245 +116.0 ± 12.84 0 4 84 159 3 +258.75 ± 37.2
441045 ncm-dbt-03 587325 500 217 53 230 +118.33 ± 13.17 0 7 74 167 2 +268.17 ± 39.97
441044 ncm-dbt-02 593196 500 218 61 221 +112.91 ± 13.39 0 7 82 158 3 +249.64 ± 37.86
441043 ncm-dbt-05 597688 500 210 61 229 +106.77 ± 13.72 0 6 95 143 6 +226.0 ± 34.87
441042 ncm-dbt-04 569390 500 209 46 245 +117.55 ± 13.0 0 6 77 165 2 +265.78 ± 39.12

Commit

Commit ID 7b7a9485d6d36b246b8eb3f278570e52d929aa51
Author AliceRoselia
Date 2025-11-14 16:28:17 UTC
Simplify indexing Removes 1 function (from_to) from the Move type, change them to simpler raw. Remove the "and" use in the correction history structure calculation. Adjust the indexing. Passed simplification STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 42880 W: 11327 L: 11113 D: 20440 Ptnml(0-2): 161, 4852, 11212, 5042, 173 https://tests.stockfishchess.org/tests/view/690593b8ea4b268f1fac1e8a Passed simplification LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 43560 W: 11276 L: 11079 D: 21205 Ptnml(0-2): 17, 4679, 12197, 4864, 23 https://tests.stockfishchess.org/tests/view/6906f819ea4b268f1fac216b closes https://github.com/official-stockfish/Stockfish/pull/6391 Bench: 2523092
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