Dev Builds » 20200816-0620

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 06:33:34 582587 4008 57 2679 1272 -271.9 ± 7.3 701 1225 73 5 0 -669.9 ± 40.31
ncm-dbt-02 06:32:46 585807 4000 62 2637 1301 -265.63 ± 7.04 662 1252 85 1 0 -661.2 ± 37.47
ncm-dbt-03 06:32:43 586823 4000 62 2663 1275 -269.52 ± 7.13 682 1238 79 1 0 -673.88 ± 38.91
ncm-dbt-04 06:32:53 567634 4000 65 2606 1329 -260.64 ± 6.9 632 1281 83 4 0 -653.21 ± 37.84
ncm-dbt-05 06:34:08 582845 3992 62 2615 1315 -263.14 ± 6.9 641 1272 82 1 0 -667.07 ± 38.17
20000 308 13200 6492 -266.14 ± 3.15 3318 6268 402 12 0 -664.91 ± 17.02

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
444046 ncm-dbt-01 583698 8 0 4 4 -190.56 ± 13.88 0 4 0 0 0 -1199.83 ± 250.99
444045 ncm-dbt-05 579868 492 4 316 172 -259.99 ± 18.31 73 166 7 0 0 -736.21 ± 163.24
444044 ncm-dbt-04 566099 500 8 320 172 -254.15 ± 19.31 76 160 14 0 0 -616.18 ± 100.06
444043 ncm-dbt-03 586562 500 10 336 154 -270.57 ± 20.83 88 150 12 0 0 -643.67 ± 110.29
444042 ncm-dbt-01 581153 500 6 334 160 -272.99 ± 19.72 85 158 7 0 0 -739.05 ± 163.27
444041 ncm-dbt-02 586731 500 9 319 172 -251.89 ± 18.5 71 169 9 1 0 -659.17 ± 131.36
444040 ncm-dbt-05 582193 500 8 331 161 -266.96 ± 20.12 84 155 11 0 0 -659.13 ± 116.77
444039 ncm-dbt-03 585421 500 3 348 149 -294.6 ± 21.01 98 149 3 0 0 -887.58 ± 222.18
444038 ncm-dbt-01 581527 500 10 327 163 -259.9 ± 20.81 83 152 14 1 0 -592.29 ± 99.42
444037 ncm-dbt-04 566493 500 5 328 167 -266.97 ± 19.56 81 162 6 1 0 -715.55 ± 177.2
444036 ncm-dbt-02 587579 500 9 339 152 -275.44 ± 20.87 90 150 10 0 0 -676.04 ± 124.55
444035 ncm-dbt-05 581777 500 6 336 158 -275.45 ± 20.87 89 153 7 1 0 -694.74 ± 156.93
444034 ncm-dbt-01 584159 500 12 321 167 -250.76 ± 19.89 76 158 15 1 0 -581.4 ± 95.42
444033 ncm-dbt-03 586223 500 8 330 162 -265.77 ± 20.51 85 152 13 0 0 -629.41 ± 104.8
444032 ncm-dbt-04 566888 500 12 325 163 -255.3 ± 19.97 77 161 10 2 0 -616.2 ± 118.22
444031 ncm-dbt-02 584243 500 6 326 168 -263.41 ± 19.4 80 160 10 0 0 -676.04 ± 124.55
444030 ncm-dbt-01 579372 500 7 338 155 -276.68 ± 22.12 93 147 8 2 0 -643.7 ± 134.88
444029 ncm-dbt-05 583237 500 4 330 166 -270.57 ± 20.0 85 156 9 0 0 -694.7 ± 134.18
444028 ncm-dbt-03 585337 500 7 327 166 -263.41 ± 19.68 81 158 11 0 0 -659.13 ± 116.77
444027 ncm-dbt-02 586350 500 7 340 153 -279.16 ± 21.32 93 147 10 0 0 -676.04 ± 124.55
444026 ncm-dbt-04 569829 500 5 321 174 -258.75 ± 18.54 74 169 6 1 0 -715.55 ± 177.2
444025 ncm-dbt-01 581902 500 5 340 155 -281.67 ± 20.75 92 151 7 0 0 -739.05 ± 163.27
444024 ncm-dbt-05 582652 500 14 333 153 -262.24 ± 21.36 87 145 18 0 0 -571.09 ± 86.01
444023 ncm-dbt-03 587792 500 13 326 161 -255.3 ± 20.22 79 156 14 1 0 -592.29 ± 99.42
444022 ncm-dbt-04 567839 500 9 334 157 -269.36 ± 20.68 87 151 12 0 0 -643.67 ± 110.29
444021 ncm-dbt-02 584537 500 10 325 165 -257.59 ± 19.22 77 161 12 0 0 -643.67 ± 110.29
444020 ncm-dbt-03 587028 500 11 328 161 -259.9 ± 19.51 79 159 12 0 0 -643.67 ± 110.29
444019 ncm-dbt-05 583656 500 7 320 173 -255.29 ± 18.11 72 169 9 0 0 -694.7 ± 134.18
444018 ncm-dbt-01 584790 500 5 342 153 -284.21 ± 21.64 95 148 6 1 0 -715.55 ± 177.2
444017 ncm-dbt-04 565784 500 10 325 165 -257.59 ± 19.49 78 159 13 0 0 -629.41 ± 104.8
444016 ncm-dbt-02 585379 500 8 323 169 -257.59 ± 19.22 77 161 12 0 0 -643.67 ± 110.29
444015 ncm-dbt-03 588600 500 3 339 158 -282.94 ± 19.99 90 156 4 0 0 -837.28 ± 240.94
444014 ncm-dbt-05 582736 500 10 325 165 -257.59 ± 18.95 76 163 11 0 0 -659.13 ± 116.77
444013 ncm-dbt-01 583405 500 6 346 148 -288.06 ± 21.8 98 144 8 0 0 -715.51 ± 146.53
444012 ncm-dbt-02 585885 500 6 341 153 -281.67 ± 20.75 92 151 7 0 0 -739.05 ± 163.27
444011 ncm-dbt-04 570148 500 5 331 164 -270.57 ± 19.42 83 160 7 0 0 -739.05 ± 163.27
444010 ncm-dbt-03 587622 500 7 329 164 -265.77 ± 19.69 82 158 10 0 0 -676.04 ± 124.55
444009 ncm-dbt-01 583279 500 6 327 167 -264.59 ± 18.98 79 163 8 0 0 -715.51 ± 146.53
444008 ncm-dbt-05 586646 500 9 324 167 -257.59 ± 18.68 75 165 10 0 0 -676.04 ± 124.55
444007 ncm-dbt-04 567997 500 11 322 167 -253.02 ± 19.42 76 159 15 0 0 -603.84 ± 95.91
444006 ncm-dbt-02 585759 500 7 324 169 -259.9 ± 20.3 82 153 15 0 0 -603.84 ± 95.91

Commit

Commit ID cd0b8b4cf28208fffef931322749205a0ddc6066
Author Joost VandeVondele
Date 2020-08-16 06:20:32 UTC
Use NNUE more for fortresses Increases the use of NNUE evaluation in positions without captures/pawn moves, by increasing the NNUEThreshold threshold with rule50_count. This patch will force Stockfish to use NNUE eval more and more in materially unbalanced positions, when it seems that the classical eval is struggling to win and only manages to shuffle. This will ask the (slower) NNUE eval to double-check the potential fortress branches of the search tree, but only when necessary. passed STC: https://tests.stockfishchess.org/tests/view/5f36f1bf11a9b1a1dbf192d8 LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 51824 W: 5836 L: 5653 D: 40335 Ptnml(0-2): 264, 4356, 16512, 4493, 287 passed LTC: https://tests.stockfishchess.org/tests/view/5f37836111a9b1a1dbf1936d LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 29768 W: 1747 L: 1590 D: 26431 Ptnml(0-2): 33, 1347, 11977, 1484, 43 closes https://github.com/official-stockfish/Stockfish/pull/3011 Bench: 4173967
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