Dev Builds » 20180227-0706

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 06:25:41 583733 3996 31 2943 1022 -321.73 ± 8.68 951 1010 37 0 0 -811.74 ± 57.98
ncm-dbt-02 06:26:28 585767 3994 23 2913 1058 -317.95 ± 8.5 927 1037 32 1 0 -826.49 ± 62.63
ncm-dbt-03 06:26:02 585540 4010 36 2914 1060 -313.7 ± 8.43 916 1046 43 0 0 -785.99 ± 53.5
ncm-dbt-04 06:25:13 567926 4000 35 2992 973 -329.65 ± 9.12 1001 956 42 1 0 -781.52 ± 54.14
ncm-dbt-05 06:26:40 582829 4000 18 2936 1046 -322.3 ± 8.56 946 1026 28 0 0 -860.73 ± 67.48
20000 143 14698 5159 -321.01 ± 3.87 4741 5075 182 2 0 -810.98 ± 25.41

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
474246 ncm-dbt-03 587622 10 0 8 2 -380.95 ± 484.13 3 2 0 0 0 -1199.83 ± 231.31
474245 ncm-dbt-02 586689 494 1 369 124 -334.05 ± 25.61 124 120 3 0 0 -885.47 ± 223.24
474244 ncm-dbt-01 585295 496 2 372 122 -334.85 ± 25.65 125 120 3 0 0 -886.17 ± 222.88
474243 ncm-dbt-05 584664 500 6 362 132 -309.64 ± 23.7 112 132 6 0 0 -766.17 ± 188.02
474242 ncm-dbt-04 567878 500 6 367 127 -316.79 ± 24.53 117 127 6 0 0 -766.17 ± 188.02
474241 ncm-dbt-03 587113 500 7 369 124 -318.24 ± 25.04 119 124 7 0 0 -739.05 ± 163.27
474240 ncm-dbt-01 582819 500 5 358 137 -305.44 ± 23.22 109 135 6 0 0 -766.17 ± 188.02
474239 ncm-dbt-02 585253 500 3 361 136 -312.47 ± 23.7 113 132 5 0 0 -798.18 ± 231.48
474238 ncm-dbt-05 580613 500 2 369 129 -325.66 ± 24.5 120 127 3 0 0 -887.58 ± 222.18
474237 ncm-dbt-04 568355 500 4 380 116 -339.62 ± 26.83 131 114 5 0 0 -798.18 ± 231.48
474236 ncm-dbt-03 585759 500 6 367 127 -316.79 ± 24.53 117 127 6 0 0 -766.17 ± 188.02
474235 ncm-dbt-01 585885 500 4 371 125 -325.66 ± 25.21 122 123 5 0 0 -798.18 ± 231.48
474234 ncm-dbt-02 584579 500 3 368 129 -322.66 ± 24.16 118 129 3 0 0 -887.58 ± 222.18
474233 ncm-dbt-05 580282 500 2 354 144 -304.06 ± 22.41 106 140 4 0 0 -837.28 ± 240.94
474232 ncm-dbt-04 565744 500 2 369 129 -325.66 ± 24.14 119 129 2 0 0 -958.31 ± 196.57
474231 ncm-dbt-03 586816 500 3 348 149 -294.6 ± 21.33 99 147 4 0 0 -837.28 ± 240.94
474230 ncm-dbt-01 584958 500 4 382 114 -342.84 ± 26.83 132 114 4 0 0 -837.28 ± 240.94
474229 ncm-dbt-02 583531 500 2 368 130 -324.16 ± 24.33 119 128 3 0 0 -887.58 ± 222.18
474228 ncm-dbt-05 585717 500 4 373 123 -328.69 ± 25.56 124 121 5 0 0 -798.18 ± 231.48
474227 ncm-dbt-04 567759 500 8 375 117 -325.66 ± 27.25 127 114 8 1 0 -676.08 ± 142.43
474226 ncm-dbt-03 585885 500 3 354 143 -302.69 ± 22.25 105 141 4 0 0 -837.28 ± 240.94
474225 ncm-dbt-02 585126 500 3 363 134 -315.34 ± 23.69 114 132 4 0 0 -837.28 ± 240.94
474224 ncm-dbt-01 584495 500 5 363 132 -312.47 ± 23.7 113 132 5 0 0 -798.18 ± 231.48
474223 ncm-dbt-04 571150 500 6 370 124 -321.18 ± 25.72 122 120 8 0 0 -715.51 ± 146.53
474222 ncm-dbt-05 579785 500 1 371 128 -330.22 ± 24.26 121 128 1 0 0 -1078.89 ± 154.95
474221 ncm-dbt-03 582987 500 4 364 132 -315.34 ± 24.03 115 130 5 0 0 -798.18 ± 231.48
474220 ncm-dbt-01 581361 500 5 369 126 -321.18 ± 24.7 119 126 5 0 0 -798.18 ± 231.48
474219 ncm-dbt-02 587367 500 2 364 134 -318.25 ± 24.36 116 131 2 1 0 -837.37 ± 250.31
474218 ncm-dbt-04 567007 500 1 378 121 -341.23 ± 25.47 128 121 1 0 0 -1078.89 ± 154.95
474217 ncm-dbt-05 586223 500 1 386 113 -354.49 ± 27.77 138 109 3 0 0 -887.58 ± 222.18
474216 ncm-dbt-03 583950 500 6 362 132 -309.64 ± 24.67 115 126 9 0 0 -694.7 ± 134.18
474215 ncm-dbt-02 585126 500 3 357 140 -306.83 ± 23.05 109 136 5 0 0 -798.18 ± 231.48
474214 ncm-dbt-01 582027 500 4 362 134 -312.47 ± 23.7 113 132 5 0 0 -798.18 ± 231.48
474213 ncm-dbt-04 567918 500 3 369 128 -324.16 ± 25.04 121 124 5 0 0 -798.18 ± 231.48
474212 ncm-dbt-05 581818 500 2 356 142 -306.83 ± 22.39 107 140 3 0 0 -887.58 ± 222.18
474211 ncm-dbt-03 582235 500 5 373 122 -327.17 ± 25.39 123 122 5 0 0 -798.18 ± 231.48
474210 ncm-dbt-01 583028 500 2 366 132 -321.18 ± 24.35 118 128 4 0 0 -837.28 ± 240.94
474209 ncm-dbt-04 567601 500 5 384 111 -344.47 ± 28.16 136 107 7 0 0 -739.05 ± 163.27
474208 ncm-dbt-02 588472 500 6 363 131 -311.05 ± 24.19 114 129 7 0 0 -739.05 ± 163.27
474207 ncm-dbt-03 587494 500 2 369 129 -325.66 ± 24.5 120 127 3 0 0 -887.58 ± 222.18
474206 ncm-dbt-05 583531 500 0 365 135 -322.66 ± 24.16 118 129 3 0 0 -887.58 ± 222.18

Commit

Commit ID 29bc1283841c8a935796159c6d3093ec879c246f
Author Stéphane Nicolet
Date 2018-02-27 07:06:46 UTC
No Tempo for draw scores given by heuristic functions The current master applies Eval::Tempo even to leaves evaluated as draw by some of the static evaluation functions of endgame.cpp (for instance KNN vs K or stalemates in KP vs K). This results in some lines being reported as +0.07 or -0.07 when the terminal position has reached such endgames (0.07 being about the value of a tempo for Stockfish). This patch does not apply Eval::tempo to these positions. This leads to more nodes being evaluated as VALUE_DRAW during search, giving more opportunities for cut-offs in alpha-beta. STC: LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 52602 W: 11776 L: 11403 D: 29423 http://tests.stockfishchess.org/tests/view/5a8cb8f60ebc590297cc8546 LTC: LLR: 2.97 (-2.94,2.94) [0.00,4.00] Total: 156613 W: 26820 L: 26158 D: 103635 http://tests.stockfishchess.org/tests/view/5a8f452d0ebc590297cc865a Bench: 4924749
Copyright 2011–2026 Next Chess Move LLC