Dev Builds » 20251122-0656

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 06:47:31 582747 4014 1724 447 1843 +114.51 ± 4.74 3 46 657 1273 28 +254.05 ± 13.26
ncm-dbt-02 06:46:22 586866 4000 1703 429 1868 +114.65 ± 4.61 0 43 662 1273 22 +255.3 ± 13.19
ncm-dbt-03 06:48:39 586000 4000 1681 403 1916 +115.03 ± 4.63 1 40 663 1272 24 +256.16 ± 13.18
ncm-dbt-04 06:47:28 567476 4000 1700 395 1905 +117.65 ± 4.55 0 35 648 1294 23 +264.01 ± 13.32
ncm-dbt-05 06:45:45 583426 3986 1716 401 1869 +119.07 ± 4.61 0 35 638 1290 30 +266.23 ± 13.43
20000 8524 2075 9401 +116.18 ± 2.07 4 199 3268 6402 127 +259.1 ± 5.93

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
442160 ncm-dbt-01 583070 14 7 4 3 +75.56 ± 67.89 0 0 4 3 0 +159.09 ± 177.81
442159 ncm-dbt-05 581569 486 208 47 231 +119.61 ± 13.39 0 4 79 155 5 +264.58 ± 38.44
442158 ncm-dbt-04 564135 500 221 32 247 +138.18 ± 12.12 0 2 61 183 4 +330.23 ± 44.08
442157 ncm-dbt-03 586689 500 205 53 242 +109.07 ± 12.7 0 4 92 152 2 +240.82 ± 35.35
442156 ncm-dbt-01 583698 500 215 58 227 +112.91 ± 12.86 0 5 85 158 2 +251.89 ± 37.03
442155 ncm-dbt-02 589368 500 204 49 247 +111.37 ± 12.51 0 5 85 160 0 +251.89 ± 37.03
442154 ncm-dbt-05 581236 500 221 46 233 +126.97 ± 12.85 0 4 71 171 4 +290.66 ± 40.76
442153 ncm-dbt-04 565823 500 211 53 236 +113.68 ± 13.72 0 7 83 155 5 +247.41 ± 37.61
442152 ncm-dbt-01 582402 500 212 45 243 +120.67 ± 13.5 0 8 70 169 3 +273.0 ± 41.13
442151 ncm-dbt-03 586985 500 210 52 238 +113.68 ± 13.38 0 6 84 156 4 +249.64 ± 37.33
442150 ncm-dbt-02 586393 500 212 50 238 +116.77 ± 12.83 0 5 80 163 2 +263.42 ± 38.27
442149 ncm-dbt-05 584076 500 214 56 230 +113.68 ± 13.89 0 10 75 162 3 +251.89 ± 39.67
442148 ncm-dbt-04 567244 500 220 49 231 +123.81 ± 12.54 0 4 73 171 2 +285.49 ± 40.16
442147 ncm-dbt-03 587197 500 216 49 235 +120.67 ± 12.6 0 3 80 164 3 +273.0 ± 38.12
442146 ncm-dbt-01 583237 500 219 61 220 +113.68 ± 13.72 0 9 77 161 3 +251.89 ± 39.16
442145 ncm-dbt-02 586181 500 219 45 236 +126.17 ± 11.7 0 1 75 173 1 +295.94 ± 39.27
442144 ncm-dbt-05 578959 500 216 47 237 +122.24 ± 12.38 0 3 77 168 2 +280.42 ± 38.93
442143 ncm-dbt-04 567839 500 211 53 236 +113.68 ± 12.86 0 5 84 159 2 +254.16 ± 37.27
442142 ncm-dbt-03 586731 500 211 44 245 +120.67 ± 12.78 0 4 78 165 3 +273.0 ± 38.74
442141 ncm-dbt-01 581070 500 218 39 243 +130.14 ± 12.19 0 2 70 175 3 +304.07 ± 40.91
442140 ncm-dbt-02 585590 500 219 61 220 +113.68 ± 13.21 0 4 89 152 5 +247.41 ± 36.02
442139 ncm-dbt-05 582235 500 206 48 246 +113.68 ± 13.04 0 5 85 157 3 +251.89 ± 37.03
442138 ncm-dbt-04 565233 500 213 52 235 +116.0 ± 12.84 0 5 81 162 2 +261.07 ± 38.02
442137 ncm-dbt-01 582193 500 215 66 219 +106.78 ± 13.89 1 4 96 143 6 +228.08 ± 34.59
442136 ncm-dbt-03 585464 500 207 60 233 +105.25 ± 14.04 1 7 90 148 4 +228.08 ± 36.04
442135 ncm-dbt-02 588302 500 212 61 227 +108.3 ± 13.4 0 8 85 155 2 +238.66 ± 37.17
442134 ncm-dbt-05 580779 500 215 55 230 +115.22 ± 13.03 0 5 83 159 3 +256.44 ± 37.51
442133 ncm-dbt-04 568673 500 210 59 231 +108.3 ± 13.06 0 5 92 150 3 +236.51 ± 35.43
442132 ncm-dbt-01 581277 500 215 58 227 +112.91 ± 13.73 0 7 84 154 5 +245.2 ± 37.37
442131 ncm-dbt-02 586308 500 217 57 226 +115.22 ± 12.85 0 4 85 158 3 +256.44 ± 36.95
442130 ncm-dbt-03 584874 500 210 43 247 +120.67 ± 12.6 0 3 80 164 3 +273.0 ± 38.12
442129 ncm-dbt-05 583321 500 225 57 218 +121.45 ± 12.77 0 2 83 160 5 +270.57 ± 37.24
442128 ncm-dbt-04 569151 500 207 43 250 +118.33 ± 12.63 0 5 77 167 1 +270.57 ± 39.07
442127 ncm-dbt-01 582193 500 215 56 229 +114.45 ± 13.03 0 5 84 158 3 +254.16 ± 37.27
442126 ncm-dbt-02 586689 500 201 56 243 +103.73 ± 13.87 0 10 88 149 3 +223.94 ± 36.53
442125 ncm-dbt-03 582778 500 217 50 233 +120.67 ± 13.32 0 6 75 165 4 +270.57 ± 39.67
442124 ncm-dbt-05 595237 500 211 45 244 +119.89 ± 12.79 0 2 85 158 5 +265.78 ± 36.75
442123 ncm-dbt-01 585590 500 208 60 232 +106.01 ± 14.2 2 6 87 152 3 +234.38 ± 36.71
442122 ncm-dbt-04 571712 500 207 54 239 +109.83 ± 12.7 0 2 97 147 4 +238.66 ± 34.07
442121 ncm-dbt-02 586097 500 219 50 231 +122.24 ± 13.66 0 6 75 163 6 +270.57 ± 39.67
442120 ncm-dbt-03 587282 500 205 52 243 +109.83 ± 13.05 0 7 84 158 1 +245.2 ± 37.37

Commit

Commit ID d9fd516547849bd5ca2a05c491aadc66fc750a39
Author Daniel Monroe
Date 2025-11-22 06:56:47 UTC
Post-NNUEv10 tune Tune search parameters after the switch to NNUEv10. The change is neutral at STC but increases with the TC. The main changes are more aggressive corrections, futility pruning, and extensions. Failed STC LLR: -2.96 (-2.94,2.94) <0.00,2.00> Total: 108320 W: 27616 L: 27719 D: 52985 Ptnml(0-2): 332, 12833, 27884, 12828, 283 https://tests.stockfishchess.org/tests/view/69212e623b03dd3a060e6114 Passed LTC LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 43272 W: 11117 L: 10788 D: 21367 Ptnml(0-2): 20, 4543, 12180, 4874, 19 https://tests.stockfishchess.org/tests/view/692130813b03dd3a060e6123 Passed VLTC LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 22714 W: 5840 L: 5581 D: 11293 Ptnml(0-2): 2, 2152, 6795, 2401, 7 https://tests.stockfishchess.org/tests/view/6921387b3b03dd3a060e6191 Passed VLTC SMP LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 11868 W: 3142 L: 2896 D: 5830 Ptnml(0-2): 0, 1007, 3676, 1249, 2 https://tests.stockfishchess.org/tests/view/69212e953b03dd3a060e611b closes https://github.com/official-stockfish/Stockfish/pull/6444 bench 2907929
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