Dev Builds » 20210921-1748

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 14. 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 10:03:44 1266105 3362 1086 611 1665 +49.42 +/- 5.78 0 199 830 630 22 +96.0 +/- 11.8
ncm-dbt-02 09:58:21 1284938 3334 1030 655 1649 +39.24 +/- 5.97 1 248 813 585 20 +75.36 +/- 11.94
ncm-dbt-03 10:03:20 1281870 3356 1013 611 1732 +41.82 +/- 5.92 2 235 820 601 20 +80.94 +/- 11.89
ncm-dbt-04 10:04:07 1277067 3352 1038 596 1718 +46.08 +/- 5.9 2 216 818 618 22 +89.4 +/- 11.9
ncm-dbt-05 09:48:08 1260869 3272 982 624 1666 +38.17 +/- 5.95 0 247 796 581 12 +74.61 +/- 12.07
ncm-dbt-06 09:58:57 1281856 3324 1018 612 1694 +42.65 +/- 5.78 1 220 823 608 10 +84.63 +/- 11.86
20000 6167 3709 10124 +42.92 +/- 2.4 6 1365 4900 3623 106 +83.5 +/- 4.86

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
193229 ncm-dbt-05 1231301 154 43 21 90 +49.97 +/- 25.47 0 8 39 30 0 +102.11 +/- 54.79
193228 ncm-dbt-02 1241906 156 48 36 72 +26.77 +/- 28.58 0 15 37 25 1 +49.33 +/- 56.47
193227 ncm-dbt-03 1257661 170 51 38 81 +26.62 +/- 26.48 0 15 43 26 1 +49.38 +/- 52.31
193226 ncm-dbt-04 1224791 166 52 32 82 +42.06 +/- 26.11 0 10 45 26 2 +76.56 +/- 50.68
193225 ncm-dbt-06 1222135 174 52 31 91 +42.14 +/- 25.77 0 13 40 34 0 +85.55 +/- 54.34
193224 ncm-dbt-01 1184067 180 52 32 96 +38.76 +/- 24.13 0 11 49 29 1 +74.47 +/- 48.52
193223 ncm-dbt-05 1248405 500 148 94 258 +37.67 +/- 14.74 0 33 133 81 3 +71.89 +/- 29.42
193222 ncm-dbt-03 1229102 500 152 87 261 +45.42 +/- 14.55 0 29 129 90 2 +89.48 +/- 29.91
193221 ncm-dbt-04 1259389 500 152 86 262 +46.13 +/- 15.97 2 33 115 97 3 +92.46 +/- 31.85
193220 ncm-dbt-02 1247827 500 138 95 267 +29.95 +/- 14.63 0 39 129 82 0 +60.36 +/- 30.0
193219 ncm-dbt-06 1226662 500 150 82 268 +47.55 +/- 14.66 1 27 126 95 1 +96.94 +/- 30.31
193218 ncm-dbt-01 1223649 500 149 89 262 +41.89 +/- 14.07 0 28 135 86 1 +83.57 +/- 29.08
193217 ncm-dbt-03 1217995 500 157 82 261 +52.51 +/- 15.68 0 33 113 100 4 +101.46 +/- 32.14
193216 ncm-dbt-05 1237863 500 134 93 273 +28.55 +/- 15.78 0 46 120 81 3 +53.22 +/- 31.17
193215 ncm-dbt-02 1229597 500 162 95 243 +46.84 +/- 16.13 0 38 112 95 5 +88.0 +/- 32.25
193214 ncm-dbt-04 1218648 500 156 96 248 +41.89 +/- 15.12 0 35 122 91 2 +82.1 +/- 30.9
193213 ncm-dbt-06 1243186 500 139 86 275 +36.97 +/- 14.57 0 31 139 76 4 +68.99 +/- 28.6
193212 ncm-dbt-01 1216886 500 155 87 258 +47.54 +/- 16.04 0 37 113 95 5 +89.48 +/- 32.12
193211 ncm-dbt-03 1215965 500 140 97 263 +29.95 +/- 15.51 0 42 127 77 4 +54.65 +/- 30.27
193210 ncm-dbt-05 1224405 500 155 96 249 +41.19 +/- 15.94 0 42 109 97 2 +80.63 +/- 32.62
193209 ncm-dbt-02 1225940 500 156 88 256 +47.54 +/- 15.56 0 33 121 91 5 +89.48 +/- 31.03
193208 ncm-dbt-04 1235124 500 161 90 249 +49.67 +/- 16.03 0 36 112 97 5 +93.95 +/- 32.26
193207 ncm-dbt-06 1232244 500 157 95 248 +43.3 +/- 14.95 0 35 118 97 0 +88.0 +/- 31.44
193206 ncm-dbt-01 1227526 500 176 92 232 +58.93 +/- 14.83 0 24 122 100 4 +115.23 +/- 30.81
193205 ncm-dbt-03 1228163 500 153 96 251 +39.78 +/- 15.13 2 29 132 84 3 +79.17 +/- 29.53
193204 ncm-dbt-05 1236598 500 151 106 243 +31.35 +/- 15.48 0 43 121 84 2 +60.36 +/- 31.04
193203 ncm-dbt-04 1221461 500 154 91 255 +44.01 +/- 14.86 0 31 128 88 3 +85.04 +/- 30.07
193202 ncm-dbt-02 1226015 500 150 94 256 +39.08 +/- 14.44 0 32 131 86 1 +77.71 +/- 29.68
193201 ncm-dbt-06 1225439 500 153 104 243 +34.16 +/- 15.77 0 43 118 86 3 +64.66 +/- 31.43
193200 ncm-dbt-01 1224392 500 159 95 246 +44.72 +/- 14.37 0 28 132 88 2 +88.0 +/- 29.49
193199 ncm-dbt-03 1240036 500 156 87 257 +48.25 +/- 15.72 0 38 106 105 1 +96.94 +/- 33.07
193198 ncm-dbt-05 1226433 500 157 110 233 +32.75 +/- 14.43 0 35 134 80 1 +64.66 +/- 29.31
193197 ncm-dbt-04 1209018 500 148 88 264 +41.89 +/- 15.74 0 38 118 90 4 +79.17 +/- 31.44
193196 ncm-dbt-06 1236646 500 157 97 246 +41.89 +/- 14.74 0 32 128 88 2 +82.1 +/- 30.08
193195 ncm-dbt-02 1241144 500 165 114 221 +35.56 +/- 14.48 1 31 135 82 1 +71.89 +/- 29.14
193194 ncm-dbt-01 1175452 500 175 80 245 +66.82 +/- 15.29 0 23 115 106 6 +129.35 +/- 31.83
193193 ncm-dbt-03 1232273 500 146 90 264 +39.08 +/- 15.21 0 36 125 86 3 +74.79 +/- 30.51
193192 ncm-dbt-02 1227148 500 156 105 239 +35.56 +/- 16.21 0 46 110 91 3 +67.55 +/- 32.45
193191 ncm-dbt-05 1232551 500 159 77 264 +57.5 +/- 14.89 0 29 110 111 0 +118.33 +/- 32.59
193190 ncm-dbt-01 1230159 500 159 101 240 +40.48 +/- 14.52 0 31 132 85 2 +79.17 +/- 29.53
193189 ncm-dbt-04 1227692 500 154 82 264 +50.38 +/- 14.14 0 24 132 92 2 +99.95 +/- 29.4
193188 ncm-dbt-06 1233849 500 157 88 255 +48.25 +/- 14.43 0 29 123 98 0 +98.44 +/- 30.73
175186 ncm-dbt-02 1463628 28 8 4 16 +49.97 +/- 75.13 0 3 4 7 0 +102.11 +/- 174.35
175184 ncm-dbt-04 1447942 36 13 5 18 +78.49 +/- 58.47 0 1 9 7 1 +142.62 +/- 118.0
175183 ncm-dbt-01 1458407 32 9 8 15 +10.86 +/- 56.63 0 3 9 4 0 +21.74 +/- 116.8
175182 ncm-dbt-03 1460046 36 10 6 20 +38.76 +/- 51.48 0 2 10 6 0 +78.52 +/- 110.22
175181 ncm-dbt-06 1461692 112 44 21 47 +72.37 +/- 34.64 0 8 17 31 0 +151.65 +/- 81.74
175180 ncm-dbt-05 1449400 118 35 27 56 +23.58 +/- 32.33 0 11 30 17 1 +41.42 +/- 62.84
175179 ncm-dbt-04 1449546 150 48 26 76 +51.33 +/- 26.11 0 8 37 30 0 +105.0 +/- 56.42
175178 ncm-dbt-02 1461238 150 47 24 79 +53.69 +/- 31.61 0 11 34 26 4 +89.98 +/- 59.03
175177 ncm-dbt-06 1454851 38 9 8 21 +9.14 +/- 40.09 0 2 14 3 0 +18.3 +/- 81.41
175176 ncm-dbt-03 1455589 150 48 28 74 +46.6 +/- 29.55 0 11 35 27 2 +85.04 +/- 58.18
175175 ncm-dbt-01 1454412 150 52 27 71 +58.45 +/- 32.0 0 14 23 37 1 +115.23 +/- 68.48

Commit

Commit ID e8788d1b32c9356fa0a127952d48c3748d8ec826
Author Michael Chaly
Date 2021-09-21 17:48:40 UTC
Combo of various parameter tweaks Combination of parameter tweaks in search, evaluation and time management. Original patches by snicolet xoto10 lonfom169 and Vizvezdenec. Includes: * Use bigger grain of positional evaluation more frequently (up to 1 exchange difference in non-pawn-material); * More extra time according to increment; * Increase margin for singular extensions; * Do more aggresive parent node futility pruning. Passed STC https://tests.stockfishchess.org/tests/view/6147deab3733d0e0dd9f313d LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 45488 W: 11691 L: 11450 D: 22347 Ptnml(0-2): 145, 5208, 11824, 5395, 172 Passed LTC https://tests.stockfishchess.org/tests/view/6147f1d53733d0e0dd9f3141 LLR: 2.94 (-2.94,2.94) <0.50,3.50> Total: 62520 W: 15808 L: 15482 D: 31230 Ptnml(0-2): 43, 6439, 17960, 6785, 33 closes https://github.com/official-stockfish/Stockfish/pull/3710 bench 5575265
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