Dev Builds » 20191119-2218

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 05:38:56 585081 3500 38 2283 1179 -264.26 ± 7.1 548 1149 53 0 0 -725.26 ± 47.89
ncm-dbt-02 05:34:56 585827 3500 35 2266 1199 -261.91 ± 6.9 528 1175 47 0 0 -746.43 ± 51.02
ncm-dbt-03 05:38:51 585459 3500 53 2285 1162 -262.07 ± 7.2 547 1139 63 1 0 -689.21 ± 43.75
ncm-dbt-04 05:37:50 568847 3500 51 2255 1194 -257.43 ± 6.96 519 1166 65 0 0 -689.2 ± 43.04
ncm-dbt-05 05:39:32 583772 3500 39 2271 1190 -262.07 ± 7.06 539 1154 57 0 0 -712.42 ± 46.1
17500 216 11360 5924 -261.54 ± 3.15 2681 5783 285 1 0 -711.19 ± 20.25

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
473641 ncm-dbt-05 582444 500 5 326 169 -264.59 ± 18.41 77 167 6 0 0 -766.17 ± 188.02
473640 ncm-dbt-01 586223 500 4 325 171 -264.59 ± 18.41 77 167 6 0 0 -766.17 ± 188.02
473639 ncm-dbt-03 584790 500 8 319 173 -253.02 ± 18.37 72 167 11 0 0 -659.13 ± 116.77
473638 ncm-dbt-04 569111 500 4 325 171 -264.59 ± 18.7 78 165 7 0 0 -739.05 ± 163.27
473637 ncm-dbt-02 585379 500 7 323 170 -258.74 ± 17.98 73 170 7 0 0 -739.05 ± 163.27
473636 ncm-dbt-05 583405 500 13 326 161 -255.29 ± 19.97 79 155 16 0 0 -592.27 ± 92.24
473635 ncm-dbt-03 585970 500 3 325 172 -265.77 ± 17.95 76 170 4 0 0 -837.28 ± 240.94
473634 ncm-dbt-04 563861 500 12 321 167 -250.76 ± 18.88 73 163 14 0 0 -616.18 ± 100.06
473633 ncm-dbt-01 584453 500 4 321 175 -259.9 ± 17.83 73 171 6 0 0 -766.17 ± 188.02
473632 ncm-dbt-02 585295 500 7 324 169 -259.9 ± 19.51 79 159 12 0 0 -643.67 ± 110.29
473631 ncm-dbt-05 585717 500 3 335 162 -277.92 ± 19.71 87 158 5 0 0 -798.18 ± 231.48
473630 ncm-dbt-03 585084 500 6 336 158 -275.44 ± 20.3 88 154 8 0 0 -715.51 ± 146.53
473629 ncm-dbt-01 582903 500 8 316 176 -249.64 ± 17.39 67 174 9 0 0 -694.7 ± 134.18
473628 ncm-dbt-04 571150 500 8 334 158 -270.57 ± 20.28 86 154 10 0 0 -676.04 ± 124.55
473627 ncm-dbt-02 586181 500 4 319 177 -257.59 ± 17.25 70 175 5 0 0 -798.18 ± 231.48
473626 ncm-dbt-05 583489 500 4 320 176 -258.74 ± 17.39 71 174 5 0 0 -798.18 ± 231.48
473625 ncm-dbt-03 587494 500 10 319 171 -250.76 ± 18.62 71 168 10 1 0 -643.7 ± 122.54
473624 ncm-dbt-04 568474 500 8 307 185 -239.73 ± 16.37 59 181 10 0 0 -676.04 ± 124.55
473623 ncm-dbt-01 585632 500 6 323 171 -259.9 ± 19.24 78 161 11 0 0 -659.13 ± 116.77
473622 ncm-dbt-02 583782 500 4 314 182 -251.89 ± 16.82 66 178 6 0 0 -766.17 ± 188.02
473621 ncm-dbt-04 569270 500 6 326 168 -263.41 ± 18.55 77 166 7 0 0 -739.05 ± 163.27
473620 ncm-dbt-01 583740 500 6 332 162 -270.57 ± 20.0 85 156 9 0 0 -694.7 ± 134.18
473619 ncm-dbt-05 585042 500 6 323 171 -259.9 ± 18.69 76 165 9 0 0 -694.7 ± 134.18
473618 ncm-dbt-03 583740 500 5 332 163 -271.78 ± 19.57 84 159 7 0 0 -739.05 ± 163.27
473617 ncm-dbt-02 586901 500 4 335 161 -276.68 ± 19.86 87 157 6 0 0 -766.17 ± 188.02
473616 ncm-dbt-04 568196 500 5 320 175 -257.59 ± 17.54 71 173 6 0 0 -766.17 ± 188.02
473615 ncm-dbt-01 585590 500 8 333 159 -269.36 ± 19.85 84 157 9 0 0 -694.7 ± 134.18
473614 ncm-dbt-05 583237 500 4 322 174 -261.07 ± 18.26 75 168 7 0 0 -739.05 ± 163.27
473613 ncm-dbt-03 585674 500 9 327 164 -261.07 ± 19.11 78 162 10 0 0 -676.04 ± 124.55
473612 ncm-dbt-02 586985 500 4 324 172 -263.41 ± 17.66 74 172 4 0 0 -837.28 ± 240.94
473611 ncm-dbt-04 571873 500 8 322 170 -256.44 ± 18.8 75 164 11 0 0 -659.13 ± 116.77
473610 ncm-dbt-05 583070 500 4 319 177 -257.59 ± 18.4 74 167 9 0 0 -694.7 ± 134.18
473609 ncm-dbt-03 585464 500 12 327 161 -257.59 ± 19.49 78 159 13 0 0 -629.41 ± 104.8
473608 ncm-dbt-02 586266 500 5 327 168 -265.77 ± 18.84 79 164 7 0 0 -739.05 ± 163.27
473607 ncm-dbt-01 587028 500 2 333 165 -276.68 ± 18.94 84 163 3 0 0 -887.58 ± 222.18

Commit

Commit ID e0f42aa956e731b5faae0585f5cc47da23fbe53c
Author Vizvezdenec
Date 2019-11-19 22:18:14 UTC
Simplify advanced pawn push pruning This patch simplifies away all conditions related to advanced pawn pushes in shallow depth pruning. Idea is based on fact that in master we have advanced pawn pushes not being pruned what we are only in PV node and when non-pawn material of opponent is > Bishop, so pretty rarely. With this patch we will have all pruning heuristics working for this moves as for every other move. STC LLR: 2.94 (-2.94,2.94) [-3.00,1.00] Total: 159143 W: 34271 L: 34418 D: 90454 http://tests.stockfishchess.org/tests/view/5dcdb3110ebc5902563249d7 LTC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 63900 W: 10375 L: 10322 D: 43203 http://tests.stockfishchess.org/tests/view/5dd05e820ebc5902579e1fb8 Closes https://github.com/official-stockfish/Stockfish/pull/2416 bench 4897149
Copyright 2011–2026 Next Chess Move LLC