Dev Builds » 20261010-1338

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 06:44:01 582755 3998 1833 285 1880 +141.93 ± 4.38 0 18 461 1474 46 +339.13 ± 15.86
ncm-dbt-02 06:43:09 590855 3990 1826 302 1862 +139.79 ± 4.34 0 12 491 1448 44 +331.66 ± 15.32
ncm-dbt-03 06:43:00 583739 4012 1842 288 1882 +141.98 ± 4.47 0 22 461 1470 53 +336.66 ± 15.87
ncm-dbt-04 06:42:32 567330 4000 1813 283 1904 +140.01 ± 4.39 0 23 463 1475 39 +334.49 ± 15.84
ncm-dbt-05 06:43:26 602367 4000 1825 272 1903 +142.36 ± 4.42 0 19 459 1472 50 +339.23 ± 15.9
20000 9139 1430 9431 +141.21 ± 1.97 0 94 2335 7339 232 +336.22 ± 7.04

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
486801 ncm-dbt-03 582318 12 5 1 6 +120.31 ± 75.55 0 0 2 4 0 +279.41 ± 948.35 ↓
486800 ncm-dbt-02 592418 490 228 35 227 +144.66 ± 12.64 0 2 55 181 7 +345.45 ± 46.58 ↓
486799 ncm-dbt-05 600735 500 234 38 228 +143.89 ± 12.3 0 2 56 186 6 +346.12 ± 46.15 ↓
486798 ncm-dbt-01 582110 498 225 38 235 +137.17 ± 12.4 0 2 63 179 5 +323.36 ± 43.31 ↓
486797 ncm-dbt-04 569031 500 227 36 237 +139.81 ± 12.26 0 2 60 183 5 +333.32 ± 44.47 ↓
486796 ncm-dbt-03 580572 500 229 32 239 +144.71 ± 12.68 0 2 57 183 8 +342.85 ± 45.71 ↓
486795 ncm-dbt-02 591383 500 223 39 238 +134.15 ± 11.86 0 1 67 179 3 +318.25 ± 41.77 ↓
486794 ncm-dbt-05 600558 500 224 36 240 +137.37 ± 12.76 0 2 65 176 7 +318.25 ± 42.59 ↓
486793 ncm-dbt-01 583656 500 225 29 246 +143.89 ± 11.87 0 1 57 187 5 +349.43 ± 45.6 ↓
486792 ncm-dbt-04 567086 500 239 39 222 +147.19 ± 11.92 0 2 51 192 5 +363.2 ± 48.51 ↓
486791 ncm-dbt-03 585169 500 237 32 231 +151.34 ± 12.57 0 2 50 189 9 +366.78 ± 49.02 ↓
486790 ncm-dbt-02 590353 500 225 37 238 +137.37 ± 11.73 0 1 63 183 3 +330.23 ± 43.2 ↓
486789 ncm-dbt-05 600336 500 239 37 224 +148.85 ± 12.05 0 1 53 189 7 +363.2 ± 47.43 ↓
486788 ncm-dbt-01 584958 500 232 43 225 +138.18 ± 13.69 0 2 69 167 12 +306.84 ± 41.23 ↓
486787 ncm-dbt-04 564057 500 225 28 247 +144.71 ± 12.05 0 3 51 192 4 +356.21 ± 48.54 ↓
486786 ncm-dbt-03 582987 500 223 37 240 +135.76 ± 12.42 0 2 65 178 5 +318.25 ± 42.59 ↓
486785 ncm-dbt-02 590953 500 228 34 238 +142.25 ± 12.16 0 2 57 186 5 +342.85 ± 45.71 ↓
486784 ncm-dbt-05 605207 500 230 40 230 +138.99 ± 12.3 0 3 58 185 4 +333.32 ± 45.35 ↓
486783 ncm-dbt-01 581194 500 231 43 226 +137.37 ± 12.56 0 4 58 184 4 +327.18 ± 45.37 ↓
486782 ncm-dbt-03 585928 500 225 37 238 +137.37 ± 12.15 0 2 62 182 4 +327.18 ± 43.69 ↓
486781 ncm-dbt-04 564605 500 221 43 236 +129.35 ± 12.99 0 4 69 172 5 +295.94 ± 41.39 ↓
486780 ncm-dbt-01 580365 500 237 43 220 +142.25 ± 12.37 0 2 58 184 6 +339.63 ± 45.29 ↓
486779 ncm-dbt-02 591857 500 230 35 235 +143.07 ± 12.95 0 1 63 176 10 +330.23 ± 43.2 ↓
486778 ncm-dbt-05 604757 500 215 26 259 +138.18 ± 12.33 0 3 59 184 4 +330.23 ± 44.94 ↓
486777 ncm-dbt-03 582694 500 234 41 225 +141.44 ± 13.4 0 4 58 179 9 +327.18 ± 45.37 ↓
486776 ncm-dbt-04 567997 500 215 39 246 +127.76 ± 12.84 0 4 70 172 4 +293.29 ± 41.07 ↓
486775 ncm-dbt-01 583992 500 232 28 240 +150.51 ± 12.4 0 3 47 193 7 +370.41 ± 50.67 ↓
486774 ncm-dbt-03 584453 500 228 39 233 +138.18 ± 13.32 0 5 58 180 7 +321.19 ± 45.36 ↓
486773 ncm-dbt-02 591254 500 232 48 220 +134.15 ± 12.47 0 2 67 176 5 +312.48 ± 41.9 ↓
486772 ncm-dbt-04 568713 500 227 37 236 +138.99 ± 12.5 0 3 59 183 5 +330.23 ± 44.94 ↓
486771 ncm-dbt-05 605523 500 226 35 239 +139.81 ± 12.26 0 1 63 180 6 +330.23 ± 43.2 ↓
486770 ncm-dbt-05 600380 500 223 33 244 +138.99 ± 13.67 0 5 59 177 9 +318.25 ± 44.96 ↓
486769 ncm-dbt-01 583531 500 225 29 246 +143.89 ± 11.65 0 3 50 195 2 +359.68 ± 49.05 ↓
486768 ncm-dbt-03 584285 500 229 33 238 +143.89 ± 11.87 0 3 51 193 3 +356.21 ± 48.54 ↓
486767 ncm-dbt-04 569749 500 223 31 246 +140.62 ± 12.02 0 3 55 189 3 +342.85 ± 46.64 ↓
486766 ncm-dbt-02 591297 500 230 36 234 +142.25 ± 11.95 0 1 59 185 5 +342.85 ± 44.76 ↓
486765 ncm-dbt-02 587325 500 230 38 232 +140.62 ± 12.44 0 2 60 182 6 +333.32 ± 44.47 ↓
486764 ncm-dbt-04 567403 500 236 30 234 +152.18 ± 12.31 0 2 48 192 8 +374.11 ± 50.1 ↓
486763 ncm-dbt-05 601446 500 234 27 239 +153.02 ± 12.04 0 2 46 195 7 +381.7 ± 51.25 ↓
486762 ncm-dbt-01 582235 500 226 32 242 +142.25 ± 11.95 0 1 59 185 5 +342.85 ± 44.76 ↓
486761 ncm-dbt-03 585253 500 232 36 232 +143.89 ± 12.71 0 2 58 182 8 +339.63 ± 45.29 ↓

Commit

Commit ID 2d54ef335ac40832140cfa079d2d814b2bfb7916
Author Dubslow
Date 2026-10-10 13:38:33 UTC
Update network: longer finetune with one-tenth LR https://github.com/vondele/nettest/pull/488 :DropTheLR: Passed STC: https://tests.stockfishchess.org/tests/view/6ac07c4c5349156614d93721 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 635776 W: 163157 L: 161987 D: 310632 Ptnml(0-2): 1106, 74329, 165866, 75463, 1124 Passed LTC: https://tests.stockfishchess.org/tests/view/6ac5c7a75349156614d93d84 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 73356 W: 19089 L: 18703 D: 35564 Ptnml(0-2): 23, 7686, 20874, 8072, 23 closes https://github.com/official-stockfish/Stockfish/pull/7213 Bench: 1635273
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