Dev Builds » 20260213-0556

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 06:44:25 582302 4000 1722 404 1874 +118.92 ± 4.68 0 46 620 1304 30 +265.78 ± 13.67
ncm-dbt-02 06:45:35 585704 4018 1770 371 1877 +126.25 ± 4.45 1 28 574 1383 23 +291.59 ± 14.19
ncm-dbt-03 06:44:51 585817 4000 1715 402 1883 +118.43 ± 4.69 0 44 632 1291 33 +263.42 ± 13.53
ncm-dbt-04 06:44:10 567668 4004 1730 393 1881 +120.64 ± 4.55 1 29 632 1312 28 +271.99 ± 13.49
ncm-dbt-05 06:46:13 583657 3978 1731 403 1844 +120.61 ± 4.65 1 37 615 1305 31 +270.93 ± 13.7
20000 8668 1973 9359 +120.97 ± 2.06 3 184 3073 6595 145 +272.57 ± 6.13

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
455130 ncm-dbt-04 568355 4 2 0 2 +190.27 ± 27.79 0 0 0 2 0 +1199.83 ± 312.71
455129 ncm-dbt-02 586520 18 7 1 10 +120.35 ± 61.17 0 0 3 6 0 +279.47 ± 313.13
455128 ncm-dbt-05 582903 478 196 43 239 +115.26 ± 13.01 0 4 80 153 2 +258.63 ± 38.15
455127 ncm-dbt-03 584159 500 219 43 238 +127.76 ± 13.02 0 4 71 170 5 +290.66 ± 40.76
455126 ncm-dbt-04 569669 500 220 41 239 +130.14 ± 12.39 0 3 68 176 3 +304.07 ± 41.65
455125 ncm-dbt-01 581569 500 229 57 214 +124.6 ± 13.27 0 3 79 161 7 +275.45 ± 38.39
455124 ncm-dbt-02 585169 500 220 41 239 +130.14 ± 12.39 0 4 65 179 2 +306.84 ± 42.73
455123 ncm-dbt-05 577971 500 223 60 217 +117.55 ± 14.36 1 5 82 154 8 +254.16 ± 37.82
455122 ncm-dbt-03 584369 500 214 45 241 +122.24 ± 13.3 0 7 70 170 3 +277.93 ± 41.14
455121 ncm-dbt-04 567640 500 217 53 230 +118.33 ± 13.0 0 1 91 151 7 +256.44 ± 35.22
455120 ncm-dbt-01 582277 500 207 54 239 +109.83 ± 13.4 0 9 80 160 1 +245.2 ± 38.39
455119 ncm-dbt-02 584076 500 217 53 230 +118.33 ± 12.63 0 3 83 161 3 +265.78 ± 37.35
455118 ncm-dbt-05 583950 500 213 49 238 +118.33 ± 12.81 0 4 81 162 3 +265.78 ± 37.95
455117 ncm-dbt-04 568872 500 209 54 237 +111.37 ± 13.22 0 5 89 152 4 +243.0 ± 36.1
455116 ncm-dbt-03 584159 500 213 56 231 +112.91 ± 14.22 0 9 81 154 6 +243.0 ± 38.14
455115 ncm-dbt-01 582402 500 225 48 227 +128.55 ± 12.43 0 2 73 171 4 +295.94 ± 39.99
455114 ncm-dbt-02 584285 500 224 48 228 +127.76 ± 12.65 0 4 69 174 3 +295.94 ± 41.39
455113 ncm-dbt-05 582527 500 228 51 221 +128.55 ± 12.82 0 5 66 176 3 +298.62 ± 42.41
455112 ncm-dbt-04 567007 500 219 54 227 +119.11 ± 12.62 0 3 82 162 3 +268.17 ± 37.61
455111 ncm-dbt-03 586901 500 216 58 226 +113.68 ± 12.86 0 5 84 159 2 +254.16 ± 37.27
455110 ncm-dbt-01 582235 500 209 50 241 +114.45 ± 12.67 0 4 85 159 2 +256.44 ± 36.95
455109 ncm-dbt-02 586774 500 225 52 223 +125.38 ± 12.51 0 3 74 170 3 +288.06 ± 39.79
455108 ncm-dbt-04 566060 500 224 51 225 +125.39 ± 13.25 1 5 66 176 2 +293.29 ± 42.41
455107 ncm-dbt-05 583698 500 225 56 219 +122.24 ± 13.12 0 5 75 166 4 +275.45 ± 39.63
455106 ncm-dbt-03 585000 500 217 52 231 +119.11 ± 13.34 0 5 80 160 5 +263.42 ± 38.27
455105 ncm-dbt-01 582819 500 212 52 236 +115.22 ± 13.03 0 5 83 159 3 +256.44 ± 37.51
455104 ncm-dbt-02 586604 500 220 36 244 +134.15 ± 13.05 1 4 58 184 3 +321.19 ± 45.36
455103 ncm-dbt-05 578712 500 217 49 234 +121.45 ± 14.01 0 8 72 164 6 +268.17 ± 40.54
455102 ncm-dbt-04 566888 500 207 44 249 +117.55 ± 13.18 0 7 75 166 2 +265.78 ± 39.69
455101 ncm-dbt-03 587664 500 213 50 237 +117.55 ± 13.53 0 5 83 156 6 +256.44 ± 37.51
455100 ncm-dbt-01 580282 500 222 53 225 +122.24 ± 14.0 0 8 71 165 6 +270.57 ± 40.83
455099 ncm-dbt-02 584874 500 217 47 236 +123.02 ± 12.17 0 2 78 168 2 +282.94 ± 38.55
455098 ncm-dbt-04 566967 500 225 53 222 +124.6 ± 12.71 0 3 76 167 4 +282.94 ± 39.21
455097 ncm-dbt-05 583740 500 213 44 243 +122.24 ± 12.38 0 3 77 168 2 +280.42 ± 38.93
455096 ncm-dbt-03 589411 500 213 47 240 +119.89 ± 13.16 0 6 75 166 3 +270.57 ± 39.67
455095 ncm-dbt-01 580821 500 208 51 241 +112.91 ± 13.73 0 8 81 157 4 +247.41 ± 38.13
455094 ncm-dbt-02 586097 500 219 51 230 +121.45 ± 12.77 0 4 77 166 3 +275.45 ± 39.01
455093 ncm-dbt-04 567561 500 207 43 250 +118.33 ± 12.44 0 2 85 160 3 +265.78 ± 36.75
455092 ncm-dbt-02 586943 500 221 42 237 +130.14 ± 12.78 0 4 67 175 4 +301.33 ± 42.04
455091 ncm-dbt-01 586012 500 210 39 251 +123.81 ± 13.28 0 7 68 172 3 +282.94 ± 41.76
455090 ncm-dbt-03 584874 500 210 51 239 +114.45 ± 12.67 0 3 88 156 3 +254.16 ± 36.15
455089 ncm-dbt-05 595760 500 216 51 233 +119.11 ± 12.62 0 3 82 162 3 +268.17 ± 37.61

Commit

Commit ID 83e42045a62c3690a6ee29862679403ea1644728
Author sscg13
Date 2026-02-13 05:56:10 UTC
Update NNUE architecture to SFNNv12 and net nn-7e1657811c6d.nnue This net is trained with https://github.com/sscg13/nettest/blob/no-king-attacker/threats.yaml. Passed non-regression STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 92640 W: 24371 L: 24209 D: 44060 Ptnml(0-2): 389, 11047, 23322, 11137, 425 https://tests.stockfishchess.org/tests/view/6986345fa259e26d2c32e9c5 Passed non-regression LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 198636 W: 50960 L: 50919 D: 96757 Ptnml(0-2): 176, 22218, 54511, 22215, 198 https://tests.stockfishchess.org/tests/view/6987ee29b0f3ca5200aafa51 closes https://github.com/official-stockfish/Stockfish/pull/6609 bench: 2465828
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