Dev Builds » 20200703-1909

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 06:29:04 583941 4000 63 2545 1392 -252.17 ± 6.55 578 1327 94 1 0 -643.7 ± 35.57
ncm-dbt-02 06:30:11 585867 4002 63 2551 1388 -252.85 ± 6.61 585 1320 94 2 0 -640.11 ± 35.57
ncm-dbt-03 06:29:33 585782 4000 54 2509 1437 -248.39 ± 6.26 539 1379 81 0 1 -669.55 ± 38.41
ncm-dbt-04 06:28:32 568177 4000 63 2550 1387 -252.88 ± 6.55 579 1331 88 2 0 -651.27 ± 36.79
ncm-dbt-05 06:30:25 581657 3998 72 2542 1384 -250.66 ± 6.65 581 1309 108 1 0 -619.33 ± 33.13
20000 315 12697 6988 -251.39 ± 2.92 2862 6666 465 6 1 -644.07 ± 15.83

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
462655 ncm-dbt-02 587494 2 1 1 0 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47
462653 ncm-dbt-01 584369 500 12 330 158 -261.07 ± 19.92 81 156 13 0 0 -629.41 ± 104.8
462652 ncm-dbt-05 583531 498 6 316 176 -253.3 ± 18.18 71 168 10 0 0 -675.33 ± 124.55
462651 ncm-dbt-03 584664 500 6 320 174 -256.44 ± 19.07 76 162 12 0 0 -643.67 ± 110.29
462650 ncm-dbt-02 585801 500 3 315 182 -254.15 ± 17.11 68 176 6 0 0 -766.17 ± 188.02
462649 ncm-dbt-04 570989 500 12 319 169 -248.52 ± 18.33 70 167 13 0 0 -629.41 ± 104.8
462648 ncm-dbt-01 584748 500 8 319 173 -253.02 ± 19.17 75 161 14 0 0 -616.18 ± 100.06
462647 ncm-dbt-05 582819 500 4 337 159 -279.16 ± 20.45 90 153 7 0 0 -739.05 ± 163.27
462646 ncm-dbt-03 584664 500 5 309 186 -245.19 ± 16.53 62 180 8 0 0 -715.51 ± 146.53
462645 ncm-dbt-02 585379 500 9 321 170 -254.15 ± 18.78 74 164 12 0 0 -643.67 ± 110.29
462644 ncm-dbt-04 567918 500 5 331 164 -270.57 ± 20.56 87 152 11 0 0 -659.13 ± 116.77
462643 ncm-dbt-03 584832 500 6 300 194 -234.38 ± 16.45 57 180 13 0 0 -629.41 ± 104.8
462642 ncm-dbt-01 584201 500 7 312 181 -246.3 ± 19.31 72 162 15 1 0 -581.4 ± 95.42
462641 ncm-dbt-02 584916 500 12 315 173 -244.1 ± 19.27 71 162 16 1 0 -571.11 ± 91.87
462640 ncm-dbt-05 580987 500 10 319 171 -250.76 ± 19.89 77 155 18 0 0 -571.09 ± 86.01
462639 ncm-dbt-04 570029 500 10 314 176 -245.19 ± 18.41 69 166 15 0 0 -603.84 ± 95.91
462638 ncm-dbt-03 587877 500 8 340 152 -277.92 ± 20.89 91 150 9 0 0 -694.7 ± 134.18
462637 ncm-dbt-01 584832 500 7 322 171 -257.59 ± 18.68 75 165 10 0 0 -676.04 ± 124.55
462636 ncm-dbt-02 585211 500 15 319 166 -245.2 ± 19.89 74 157 18 1 0 -552.08 ± 85.8
462635 ncm-dbt-04 568514 500 5 319 176 -256.44 ± 17.69 71 172 7 0 0 -739.05 ± 163.27
462634 ncm-dbt-05 580282 500 12 317 171 -246.3 ± 18.56 70 165 15 0 0 -603.84 ± 95.91
462633 ncm-dbt-03 586520 500 7 315 178 -249.64 ± 17.94 69 170 11 0 0 -659.13 ± 116.77
462632 ncm-dbt-01 582819 500 8 313 179 -246.3 ± 17.78 67 171 12 0 0 -643.67 ± 110.29
462631 ncm-dbt-04 564762 500 7 311 182 -245.19 ± 17.9 67 170 13 0 0 -629.41 ± 104.8
462630 ncm-dbt-05 578588 500 7 307 186 -240.82 ± 17.58 63 175 11 1 0 -629.43 ± 115.29
462629 ncm-dbt-02 585801 500 3 317 180 -256.44 ± 17.69 71 172 7 0 0 -739.05 ± 163.27
462628 ncm-dbt-03 584453 500 7 295 198 -228.07 ± 15.84 49 192 8 0 1 -676.08 ± 142.43
462627 ncm-dbt-01 581319 500 7 313 180 -247.41 ± 17.38 66 174 10 0 0 -676.04 ± 124.55
462626 ncm-dbt-05 580075 500 14 308 178 -234.38 ± 18.21 64 166 20 0 0 -552.07 ± 80.89
462625 ncm-dbt-04 566849 500 2 318 180 -258.74 ± 17.39 71 174 5 0 0 -798.18 ± 231.48
462624 ncm-dbt-02 586097 500 4 324 172 -263.41 ± 18.55 77 166 7 0 0 -739.05 ± 163.27
462623 ncm-dbt-03 587197 500 8 322 170 -256.44 ± 18.25 73 168 9 0 0 -694.7 ± 134.18
462622 ncm-dbt-01 583992 500 3 317 180 -256.44 ± 17.1 69 176 5 0 0 -798.18 ± 231.48
462621 ncm-dbt-02 585084 500 5 326 169 -264.59 ± 19.27 80 161 9 0 0 -694.7 ± 134.18
462620 ncm-dbt-05 583447 500 11 319 170 -249.64 ± 18.47 71 166 13 0 0 -629.41 ± 104.8
462619 ncm-dbt-04 567324 500 14 317 169 -244.1 ± 19.27 70 165 13 2 0 -581.4 ± 101.74
462618 ncm-dbt-01 585253 500 11 319 170 -249.64 ± 18.99 73 162 15 0 0 -603.84 ± 95.91
462617 ncm-dbt-05 583531 500 8 319 173 -253.02 ± 19.17 75 161 14 0 0 -616.18 ± 100.06
462616 ncm-dbt-02 587028 500 11 313 176 -243.0 ± 18.88 70 162 18 0 0 -571.09 ± 86.01
462615 ncm-dbt-03 586054 500 7 308 185 -241.91 ± 16.93 62 177 11 0 0 -659.13 ± 116.77
462614 ncm-dbt-04 569031 500 8 321 171 -255.29 ± 18.66 74 165 11 0 0 -659.13 ± 116.77

Commit

Commit ID 67818ee9481ba99369fa8a8d92e5c50428fb300e
Author SFisGOD
Date 2020-07-03 19:09:22 UTC
Remove passed pawn condition. This will help scale down relatively high eval in drawish rook endgames with passed pawn like in TCEC S18 Superfinal Game 90. Passed STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 50456 W: 9644 L: 9540 D: 31272 Ptnml(0-2): 760, 5637, 12332, 5737, 762 https://tests.stockfishchess.org/tests/view/5efcb76e59f6f035328940ed Passed LTC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 77264 W: 9518 L: 9518 D: 58228 Ptnml(0-2): 402, 6766, 24321, 6716, 427 https://tests.stockfishchess.org/tests/view/5efd2ad759f6f03532894143 closes https://github.com/official-stockfish/Stockfish/pull/2792 Bench: 4431626
Copyright 2011–2026 Next Chess Move LLC