Dev Builds » 20250802-1354

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 06:44:18 582293 4014 1632 437 1945 +106.66 ± 4.73 0 58 719 1207 23 +232.24 ± 12.66
ncm-dbt-02 06:43:43 585418 3992 1617 484 1891 +101.39 ± 4.7 1 62 747 1175 11 +221.2 ± 12.41
ncm-dbt-03 06:43:59 583999 3994 1649 424 1921 +110.11 ± 4.75 2 51 689 1230 25 +241.86 ± 12.94
ncm-dbt-04 06:43:21 568850 4000 1640 431 1929 +108.4 ± 4.7 0 56 699 1225 20 +237.85 ± 12.85
ncm-dbt-05 06:44:36 578883 4000 1633 438 1929 +107.06 ± 4.73 0 64 693 1227 16 +235.18 ± 12.92
20000 8171 2214 9615 +106.72 ± 2.11 3 291 3547 6064 95 +233.59 ± 5.7

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
425446 ncm-dbt-01 583572 14 6 1 7 +129.72 ± 68.06 0 0 2 5 0 +311.09 ± 530.6
425445 ncm-dbt-02 584537 492 200 57 235 +103.98 ± 12.46 0 2 101 141 2 +226.61 ± 33.23
425444 ncm-dbt-03 583279 494 194 47 253 +106.61 ± 12.62 0 3 96 146 2 +233.87 ± 34.37
425443 ncm-dbt-05 575598 500 201 56 243 +103.73 ± 13.22 0 8 90 151 1 +228.08 ± 36.04
425442 ncm-dbt-04 570029 500 193 52 255 +100.7 ± 14.32 0 12 89 145 4 +213.85 ± 36.34
425441 ncm-dbt-01 583196 500 209 51 240 +113.68 ± 13.55 0 6 85 154 5 +247.41 ± 37.09
425440 ncm-dbt-02 584832 500 196 61 243 +96.19 ± 13.48 0 11 93 146 0 +209.91 ± 35.49
425439 ncm-dbt-03 584579 500 208 57 235 +108.3 ± 12.88 0 5 91 152 2 +238.66 ± 35.65
425438 ncm-dbt-05 581902 500 209 62 229 +105.25 ± 13.39 0 8 89 151 2 +230.16 ± 36.26
425437 ncm-dbt-04 568872 500 204 57 239 +105.25 ± 13.22 0 7 91 150 2 +230.16 ± 35.78
425436 ncm-dbt-01 583405 500 186 60 254 +89.48 ± 13.53 0 11 103 135 1 +190.85 ± 33.57
425435 ncm-dbt-02 587367 500 194 65 241 +91.71 ± 13.26 1 7 104 138 0 +200.24 ± 33.24
425434 ncm-dbt-03 586012 500 204 52 244 +109.07 ± 13.23 0 7 86 155 2 +240.82 ± 36.9
425433 ncm-dbt-05 578383 500 201 50 249 +108.3 ± 13.23 0 8 84 157 1 +240.82 ± 37.4
425432 ncm-dbt-04 568633 500 210 59 231 +108.3 ± 13.23 0 7 87 154 2 +238.66 ± 36.67
425431 ncm-dbt-01 583279 500 200 57 243 +102.22 ± 13.21 0 6 98 143 3 +219.87 ± 34.26
425430 ncm-dbt-02 586901 500 216 64 220 +109.07 ± 13.73 0 9 83 155 3 +238.66 ± 37.66
425429 ncm-dbt-03 581610 500 206 58 236 +106.01 ± 14.67 0 10 90 142 8 +219.87 ± 36.1
425428 ncm-dbt-01 579868 500 210 51 239 +114.45 ± 13.21 0 4 88 153 5 +249.64 ± 36.24
425427 ncm-dbt-05 579083 500 202 63 235 +99.2 ± 13.51 0 8 98 141 3 +211.87 ± 34.38
425426 ncm-dbt-04 566454 500 214 56 230 +113.68 ± 13.38 0 5 87 153 5 +247.41 ± 36.56
425425 ncm-dbt-02 584076 500 203 63 234 +99.95 ± 13.52 0 9 94 145 2 +215.85 ± 35.23
425424 ncm-dbt-03 584327 500 207 45 248 +116.77 ± 12.47 0 3 84 161 2 +263.42 ± 37.11
425423 ncm-dbt-04 568951 500 206 51 243 +111.37 ± 12.87 0 5 87 156 2 +247.41 ± 36.56
425422 ncm-dbt-01 583112 500 213 57 230 +112.14 ± 12.69 0 3 91 153 3 +247.41 ± 35.47
425421 ncm-dbt-05 578424 500 206 51 243 +111.37 ± 13.05 0 7 82 160 1 +249.64 ± 37.86
425420 ncm-dbt-02 585674 500 200 61 239 +99.2 ± 13.02 0 7 98 144 1 +215.85 ± 34.33
425419 ncm-dbt-03 584495 500 212 51 237 +116.0 ± 13.54 1 5 79 162 3 +261.07 ± 38.58
425418 ncm-dbt-04 568832 500 204 51 245 +109.83 ± 13.73 0 10 79 159 2 +243.0 ± 38.64
425417 ncm-dbt-05 580904 500 212 50 238 +116.77 ± 13.88 0 8 77 160 5 +256.44 ± 39.15
425416 ncm-dbt-01 581153 500 201 56 243 +103.73 ± 13.87 0 11 85 152 2 +226.0 ± 37.21
425415 ncm-dbt-02 584327 500 205 54 241 +108.3 ± 13.23 0 7 87 154 2 +238.66 ± 36.67
425414 ncm-dbt-03 584622 500 219 62 219 +112.91 ± 14.22 1 8 78 159 4 +249.64 ± 38.9
425413 ncm-dbt-05 574500 500 193 61 246 +93.95 ± 13.92 0 12 96 140 2 +200.24 ± 34.91
425412 ncm-dbt-01 581485 500 206 46 248 +115.22 ± 13.72 0 11 69 169 1 +261.07 ± 41.31
425411 ncm-dbt-04 567759 500 200 52 248 +106.01 ± 12.88 0 7 88 155 0 +236.51 ± 36.44
425410 ncm-dbt-02 585632 500 203 59 238 +102.97 ± 13.54 0 10 87 152 1 +226.0 ± 36.75
425409 ncm-dbt-03 583070 500 199 52 249 +105.25 ± 13.72 0 10 85 153 2 +230.16 ± 37.2
425408 ncm-dbt-01 581569 500 201 58 241 +102.22 ± 13.21 0 6 98 143 3 +219.87 ± 34.26
425407 ncm-dbt-05 582277 500 209 45 246 +118.33 ± 12.63 0 5 77 167 1 +270.57 ± 39.07
425406 ncm-dbt-04 571270 500 209 53 238 +112.14 ± 12.69 0 3 91 153 3 +247.41 ± 35.47

Commit

Commit ID 9034730a5a0f1f311dd21ef5afd5b3b9c86d9f83
Author J. Oster
Date 2025-08-02 13:54:10 UTC
Display upper/lowerbound before wdl Bound info belongs directly to score info closes https://github.com/official-stockfish/Stockfish/pull/6195 No functional change.
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