Dev Builds » 20200628-2005

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 06:28:58 584367 3994 61 2568 1365 -256.27 ± 6.62 597 1313 87 0 0 -660.93 ± 37.01
ncm-dbt-02 06:28:27 586473 4000 78 2537 1385 -248.94 ± 6.67 576 1310 111 3 0 -608.39 ± 32.66
ncm-dbt-03 06:27:53 585892 4000 68 2530 1402 -249.36 ± 6.39 554 1356 88 2 0 -651.27 ± 36.79
ncm-dbt-04 06:28:55 568415 4006 88 2580 1338 -253.06 ± 6.8 602 1291 107 3 0 -614.88 ± 33.27
ncm-dbt-05 06:27:00 581911 4000 67 2574 1359 -255.73 ± 6.71 603 1302 94 1 0 -643.7 ± 35.57
20000 362 12789 6849 -252.66 ± 2.97 2932 6572 487 9 0 -634.65 ± 15.47

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
462785 ncm-dbt-04 569989 6 0 4 2 -278.86 ± 222.92 1 2 0 0 0 -1199.83 ± 276.48
462784 ncm-dbt-01 585169 494 8 327 159 -266.81 ± 19.98 82 155 10 0 0 -673.9 ± 124.54
462783 ncm-dbt-02 587834 500 14 304 182 -230.16 ± 17.15 58 174 18 0 0 -571.09 ± 86.01
462782 ncm-dbt-05 581902 500 11 318 171 -248.52 ± 19.35 74 159 17 0 0 -581.38 ± 88.96
462781 ncm-dbt-03 585843 500 9 320 171 -253.02 ± 18.64 73 165 12 0 0 -643.67 ± 110.29
462780 ncm-dbt-04 569430 500 12 323 165 -253.02 ± 19.42 76 159 15 0 0 -603.84 ± 95.91
462779 ncm-dbt-01 582736 500 7 305 188 -238.65 ± 15.94 57 184 9 0 0 -694.7 ± 134.18
462778 ncm-dbt-05 579042 500 14 310 176 -236.51 ± 17.52 62 172 16 0 0 -592.27 ± 92.24
462777 ncm-dbt-02 586985 500 8 320 172 -254.16 ± 20.08 78 157 14 1 0 -592.29 ± 99.42
462776 ncm-dbt-03 584622 500 7 306 187 -239.73 ± 16.64 60 179 11 0 0 -659.13 ± 116.77
462775 ncm-dbt-04 567997 500 9 329 162 -263.41 ± 20.22 83 154 13 0 0 -629.41 ± 104.8
462774 ncm-dbt-05 581028 500 12 318 170 -247.41 ± 19.7 74 159 16 1 0 -571.11 ± 91.87
462773 ncm-dbt-01 587197 500 7 319 174 -254.15 ± 18.52 73 166 11 0 0 -659.13 ± 116.77
462772 ncm-dbt-03 586985 500 8 316 176 -249.64 ± 17.94 68 173 8 1 0 -676.08 ± 142.43
462771 ncm-dbt-02 584790 500 10 312 178 -243.0 ± 18.38 67 169 13 1 0 -603.86 ± 103.96
462770 ncm-dbt-04 568275 500 9 327 164 -261.07 ± 20.19 82 154 14 0 0 -616.18 ± 100.06
462769 ncm-dbt-05 581485 500 10 339 151 -274.22 ± 20.72 89 151 10 0 0 -676.04 ± 124.55
462768 ncm-dbt-03 585464 500 6 320 174 -256.44 ± 18.53 73 169 7 1 0 -694.74 ± 156.93
462767 ncm-dbt-01 580075 500 10 329 161 -262.24 ± 20.07 82 155 13 0 0 -629.41 ± 104.8
462766 ncm-dbt-02 586477 500 9 312 179 -244.09 ± 17.75 66 171 13 0 0 -629.41 ± 104.8
462765 ncm-dbt-04 570749 500 17 309 174 -232.26 ± 18.16 62 169 18 1 0 -552.08 ± 85.8
462764 ncm-dbt-03 587028 500 9 316 175 -248.52 ± 17.79 68 171 11 0 0 -659.13 ± 116.77
462763 ncm-dbt-01 586858 500 5 322 173 -259.9 ± 18.69 76 165 9 0 0 -694.7 ± 134.18
462762 ncm-dbt-05 582652 500 4 308 188 -245.19 ± 17.36 65 174 11 0 0 -659.13 ± 116.77
462761 ncm-dbt-04 567522 500 9 329 162 -263.41 ± 19.68 81 158 11 0 0 -659.13 ± 116.77
462760 ncm-dbt-02 586223 500 9 319 172 -251.89 ± 20.03 77 157 15 1 0 -581.4 ± 95.42
462759 ncm-dbt-03 586393 500 13 313 174 -240.82 ± 18.09 66 168 16 0 0 -592.27 ± 92.24
462758 ncm-dbt-01 585674 500 12 323 165 -253.02 ± 18.91 74 163 13 0 0 -629.41 ± 104.8
462757 ncm-dbt-05 584076 500 5 323 172 -261.07 ± 18.55 76 166 8 0 0 -715.51 ± 146.53
462756 ncm-dbt-04 567047 500 12 318 170 -247.41 ± 18.96 71 165 13 1 0 -603.86 ± 103.96
462755 ncm-dbt-02 585801 500 9 323 168 -256.44 ± 18.53 74 166 10 0 0 -676.04 ± 124.55
462754 ncm-dbt-01 582611 500 4 319 177 -257.59 ± 18.12 73 169 8 0 0 -715.51 ± 146.53
462753 ncm-dbt-05 580655 500 6 328 166 -265.77 ± 19.13 80 162 8 0 0 -715.51 ± 146.53
462752 ncm-dbt-03 586181 500 11 306 183 -235.44 ± 16.86 59 177 14 0 0 -616.18 ± 100.06
462751 ncm-dbt-04 567126 500 8 325 167 -259.9 ± 19.78 79 160 10 1 0 -643.7 ± 122.54
462750 ncm-dbt-02 587197 500 8 330 162 -265.77 ± 20.24 84 154 12 0 0 -643.67 ± 110.29
462749 ncm-dbt-05 584453 500 5 330 165 -269.36 ± 19.57 83 159 8 0 0 -715.51 ± 146.53
462748 ncm-dbt-01 584622 500 8 324 168 -258.74 ± 19.89 80 156 14 0 0 -616.18 ± 100.06
462747 ncm-dbt-03 584622 500 5 333 162 -272.99 ± 20.29 87 154 9 0 0 -694.7 ± 134.18
462746 ncm-dbt-02 586477 500 11 317 172 -247.41 ± 18.96 72 162 16 0 0 -592.27 ± 92.24
462745 ncm-dbt-04 567601 500 12 316 172 -245.19 ± 17.9 67 170 13 0 0 -629.41 ± 104.8

Commit

Commit ID 16836f39b295ec635c9883498400f7006ac2869f
Author Stefan Geschwentner
Date 2020-06-28 20:05:09 UTC
Scale down eval for drawish rook endgames. STC: LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 82136 W: 15694 L: 15407 D: 51035 Ptnml(0-2): 1076, 8960, 20767, 9131, 1134 https://tests.stockfishchess.org/tests/view/5ef86cf8020eec13834a94dd LTC: LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 70200 W: 8787 L: 8440 D: 52973 Ptnml(0-2): 325, 5983, 22170, 6264, 358 https://tests.stockfishchess.org/tests/view/5ef88225020eec13834a950a closes https://github.com/official-stockfish/Stockfish/pull/2780 Bench: 4478869
Copyright 2011–2026 Next Chess Move LLC