Dev Builds » 20261024-1811

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 06:41:15 585723 3880 1782 273 1825 +142.63 ± 4.38 0 11 455 1428 46 +341.34 ± 15.93
ncm-dbt-02 07:29:52 592700 4314 1972 312 2030 +140.95 ± 4.1 0 10 520 1584 43 +337.76 ± 14.88
ncm-dbt-03 07:34:07 585635 4306 1969 286 2051 +143.42 ± 4.2 0 18 485 1599 51 +344.49 ± 15.46
ncm-dbt-04 06:41:32 570649 3796 1763 283 1750 +143.03 ± 4.4 0 19 414 1431 34 +347.65 ± 16.76
ncm-dbt-05 06:44:28 606214 3704 1710 244 1750 +145.45 ± 4.32 0 8 406 1402 36 +356.33 ± 16.87
20000 9196 1398 9406 +143.03 ± 1.91 0 66 2280 7444 210 +345.14 ± 7.11

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
487392 ncm-dbt-05 600957 204 100 12 92 +160.36 ± 15.41 0 0 15 86 1 +440.13 ± 94.47 ↓
487391 ncm-dbt-04 572719 296 139 18 139 +150.84 ± 15.66 0 3 23 120 2 +385.65 ± 73.57 ↓
487390 ncm-dbt-03 585632 306 147 23 136 +149.36 ± 15.88 0 1 32 115 5 +361.24 ± 61.87 ↓
487389 ncm-dbt-02 592202 314 139 29 146 +127.09 ± 15.04 0 0 49 106 2 +293.21 ± 48.56 ↓
487388 ncm-dbt-01 581277 380 174 31 175 +137.5 ± 13.44 0 3 41 146 0 +340.14 ± 54.35 ↓
487387 ncm-dbt-05 600913 500 225 30 245 +143.07 ± 12.34 0 1 60 182 7 +339.63 ± 44.35 ↓
487386 ncm-dbt-04 568633 500 236 36 228 +147.19 ± 11.7 0 1 53 191 5 +363.2 ± 47.43 ↓
487385 ncm-dbt-02 593802 500 228 52 220 +127.76 ± 12.84 0 2 76 166 6 +288.06 ± 39.11 ↓
487384 ncm-dbt-03 587877 500 225 33 242 +140.62 ± 11.81 0 2 57 188 3 +342.85 ± 45.71 ↓
487383 ncm-dbt-01 588728 500 228 32 240 +143.89 ± 12.3 0 1 59 183 7 +342.85 ± 44.76 ↓
487382 ncm-dbt-05 605793 500 231 38 231 +141.44 ± 12.41 0 2 59 183 6 +336.46 ± 44.87 ↓
487381 ncm-dbt-04 571070 500 221 38 241 +133.34 ± 13.45 0 7 58 180 5 +309.64 ± 45.27 ↓
487380 ncm-dbt-02 590696 500 234 27 239 +153.02 ± 11.35 0 0 49 195 6 +385.59 ± 49.31 ↓
487379 ncm-dbt-03 584916 500 225 33 242 +140.62 ± 12.84 0 3 59 181 7 +330.23 ± 44.94 ↓
487378 ncm-dbt-01 586139 500 226 31 243 +143.07 ± 11.91 0 1 58 186 5 +346.12 ± 45.18 ↓
487377 ncm-dbt-05 604128 500 233 33 234 +147.19 ± 11.24 0 1 51 195 3 +370.41 ± 48.42 ↓
487376 ncm-dbt-04 568315 500 239 46 215 +141.44 ± 12.2 0 2 58 185 5 +339.63 ± 45.29 ↓
487375 ncm-dbt-02 594454 500 222 35 243 +136.56 ± 11.55 0 1 63 184 2 +330.23 ± 43.2 ↓
487374 ncm-dbt-03 587622 500 234 32 234 +148.85 ± 12.05 0 2 50 192 6 +366.78 ± 49.02 ↓
487373 ncm-dbt-01 585000 500 235 43 222 +140.62 ± 11.81 0 0 63 182 5 +336.45 ± 43.03 ↓
487372 ncm-dbt-05 607650 500 229 32 239 +144.71 ± 11.83 0 2 53 191 4 +356.21 ± 47.52 ↓
487371 ncm-dbt-04 570829 500 240 38 222 +148.85 ± 11.14 0 1 49 197 3 +377.87 ± 49.47 ↓
487370 ncm-dbt-02 591900 500 235 37 228 +145.54 ± 11.56 0 0 57 188 5 +356.21 ± 45.43 ↓
487369 ncm-dbt-03 584411 500 237 33 230 +150.51 ± 11.96 0 1 51 191 7 +370.41 ± 48.42 ↓
487368 ncm-dbt-01 586858 500 227 31 242 +143.89 ± 12.71 0 1 61 179 9 +336.46 ± 43.96 ↓
487067 ncm-dbt-02 589924 500 235 37 228 +145.54 ± 11.56 0 0 57 188 5 +356.21 ± 45.43 ↓
487066 ncm-dbt-03 584622 500 214 37 249 +128.55 ± 12.82 0 5 66 176 3 +298.62 ± 42.41 ↓
487065 ncm-dbt-05 607423 500 228 35 237 +141.44 ± 11.55 0 1 58 188 3 +346.12 ± 45.18 ↓
487064 ncm-dbt-01 586901 500 232 30 238 +148.85 ± 12.05 0 1 53 189 7 +363.2 ± 47.43 ↓
487063 ncm-dbt-04 573204 500 228 37 235 +139.81 ± 12.47 0 2 61 181 6 +330.23 ± 44.08 ↓
487062 ncm-dbt-02 592893 500 223 27 250 +143.89 ± 11.87 0 2 54 190 4 +352.8 ± 47.05 ↓
487061 ncm-dbt-03 586604 500 238 32 230 +152.18 ± 12.53 0 2 49 190 9 +370.41 ± 49.56 ↓
487060 ncm-dbt-05 603679 500 227 32 241 +143.07 ± 11.69 0 1 57 188 4 +349.43 ± 45.6 ↓
487059 ncm-dbt-01 584706 500 233 38 229 +143.07 ± 12.34 0 2 57 185 6 +342.85 ± 45.71 ↓
487058 ncm-dbt-04 568832 500 230 37 233 +141.44 ± 11.77 0 2 56 189 3 +346.12 ± 46.15 ↓
487057 ncm-dbt-02 593412 500 228 41 231 +136.56 ± 12.59 0 3 62 180 5 +321.19 ± 43.77 ↓
487056 ncm-dbt-03 583908 500 230 33 237 +144.71 ± 12.47 0 0 62 179 9 +339.63 ± 43.41 ↓
487055 ncm-dbt-05 619173 500 237 32 231 +151.34 ± 11.92 0 0 53 189 8 +370.41 ± 47.26 ↓
487054 ncm-dbt-01 586181 500 227 37 236 +138.99 ± 12.7 0 2 63 178 7 +324.17 ± 43.32 ↓
487053 ncm-dbt-04 571592 500 230 33 237 +144.71 ± 11.83 0 1 56 188 5 +352.8 ± 46.04 ↓
487052 ncm-dbt-02 595019 500 228 27 245 +148.02 ± 12.53 0 2 53 187 8 +356.21 ± 47.52 ↓
487051 ncm-dbt-03 585126 500 219 30 251 +138.18 ± 11.7 0 2 59 187 2 +336.46 ± 44.87 ↓

Commit

Commit ID 17a0e6648ce1db9763b9d5bcc688fbf4a2d58cc8
Author Carlos Esparza
Date 2026-10-24 18:11:41 UTC
rework movepicker stages This is supposed to be a general cleanup of the `MovePicker` class. The main points are - merging the `*_TT` and `*_INIT` movepicker stages. The "kind" (qsearch/evasions/probcut/normal) of a movepicker instance is now encoded stored in the `first_stage` variable instead of being implicit in `stage` - move bad quiet moves next to bad captures so we can merge the `BAD_CAPTURES` and `BAD_QUIETS` stages - the logic for quiet move skipping is moved from `next_move()` to `skip_quiets()` passed non-reg STC: https://tests.stockfishchess.org/tests/view/6ad33e37733e627f7058c598 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 100032 W: 25521 L: 25381 D: 49130 Ptnml(0-2): 99, 10553, 28604, 10629, 131 closes https://github.com/official-stockfish/Stockfish/pull/7235 No functional change
Copyright 2011–2026 Next Chess Move LLC