Dev Builds » 20200628-2003

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 06:30:06 582298 4000 67 2544 1389 -251.47 ± 6.57 574 1333 89 4 0 -641.85 ± 36.52
ncm-dbt-02 06:30:17 587192 4008 66 2557 1385 -252.74 ± 6.53 580 1332 91 1 0 -649.7 ± 36.17
ncm-dbt-03 06:29:37 586848 4000 65 2574 1361 -256.01 ± 6.59 595 1319 86 0 0 -663.24 ± 37.23
ncm-dbt-04 06:28:47 566126 4000 54 2566 1380 -256.44 ± 6.62 598 1317 84 1 0 -663.25 ± 37.69
ncm-dbt-05 06:30:45 581698 3992 68 2493 1431 -244.9 ± 6.29 530 1366 99 1 0 -634.3 ± 34.64
20000 320 12734 6946 -252.29 ± 2.92 2877 6667 449 7 0 -650.11 ± 16.11

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
450358 ncm-dbt-02 586901 8 1 4 3 -136.8 ± 89.09 0 3 1 0 0 -337.69 ± 541.44
450357 ncm-dbt-05 585084 492 6 309 177 -249.56 ± 16.68 63 177 6 0 0 -763.34 ± 187.98
450356 ncm-dbt-01 585759 500 8 313 179 -246.3 ± 18.56 69 168 12 1 0 -616.2 ± 109.19
450355 ncm-dbt-03 586985 500 9 325 166 -258.74 ± 18.54 75 166 9 0 0 -694.7 ± 134.18
450354 ncm-dbt-04 565115 500 8 321 171 -255.29 ± 18.66 74 165 11 0 0 -659.13 ± 116.77
450353 ncm-dbt-02 588004 500 8 322 170 -256.44 ± 18.8 75 164 11 0 0 -659.13 ± 116.77
450352 ncm-dbt-05 586308 500 13 315 172 -243.0 ± 18.63 69 164 17 0 0 -581.38 ± 88.96
450351 ncm-dbt-01 581111 500 4 320 176 -258.74 ± 18.54 75 166 9 0 0 -694.7 ± 134.18
450350 ncm-dbt-02 586985 500 11 310 179 -239.73 ± 17.95 65 169 16 0 0 -592.27 ± 92.24
450349 ncm-dbt-03 587579 500 8 321 171 -255.29 ± 18.93 75 163 12 0 0 -643.67 ± 110.29
450348 ncm-dbt-04 566099 500 6 324 170 -261.07 ± 19.11 78 162 10 0 0 -676.04 ± 124.55
450347 ncm-dbt-01 583531 500 7 315 178 -249.64 ± 18.21 69 171 9 1 0 -659.17 ± 131.36
450346 ncm-dbt-05 569031 500 9 303 188 -234.38 ± 16.71 58 178 14 0 0 -616.18 ± 100.06
450345 ncm-dbt-03 586393 500 7 323 170 -258.74 ± 18.26 74 168 8 0 0 -715.51 ± 146.53
450344 ncm-dbt-02 586901 500 10 318 172 -249.64 ± 17.94 69 170 11 0 0 -659.13 ± 116.77
450343 ncm-dbt-04 569230 500 8 326 166 -261.07 ± 19.11 78 162 10 0 0 -676.04 ± 124.55
450342 ncm-dbt-01 584285 500 16 323 161 -248.52 ± 19.35 74 159 17 0 0 -581.38 ± 88.96
450341 ncm-dbt-03 587028 500 7 308 185 -241.91 ± 16.66 61 179 10 0 0 -676.04 ± 124.55
450340 ncm-dbt-02 585801 500 8 327 165 -262.24 ± 18.98 78 163 9 0 0 -694.7 ± 134.18
450339 ncm-dbt-05 586308 500 1 301 198 -240.82 ± 16.23 59 182 9 0 0 -694.7 ± 134.18
450338 ncm-dbt-04 565548 500 6 330 164 -268.16 ± 20.26 85 154 11 0 0 -659.13 ± 116.77
450337 ncm-dbt-01 581070 500 8 333 159 -269.36 ± 20.13 85 155 10 0 0 -676.04 ± 124.55
450336 ncm-dbt-02 587113 500 9 321 170 -254.15 ± 19.57 77 158 15 0 0 -603.84 ± 95.91
450335 ncm-dbt-03 587452 500 11 317 172 -247.41 ± 18.96 72 162 16 0 0 -592.27 ± 92.24
450334 ncm-dbt-05 580862 500 10 327 163 -259.9 ± 20.55 82 154 13 1 0 -603.86 ± 103.96
450333 ncm-dbt-04 561679 500 5 317 178 -254.15 ± 17.97 71 170 9 0 0 -694.7 ± 134.18
450332 ncm-dbt-01 579537 500 9 303 188 -234.38 ± 16.97 59 176 15 0 0 -603.84 ± 95.91
450331 ncm-dbt-03 586435 500 8 327 165 -262.24 ± 19.26 79 161 10 0 0 -676.04 ± 124.55
450330 ncm-dbt-05 581777 500 12 314 174 -243.0 ± 18.88 70 162 18 0 0 -571.09 ± 86.01
450329 ncm-dbt-02 584117 500 7 325 168 -261.07 ± 19.11 78 162 10 0 0 -676.04 ± 124.55
450328 ncm-dbt-04 567839 500 8 320 172 -254.15 ± 18.78 74 164 12 0 0 -643.67 ± 110.29
450327 ncm-dbt-01 581777 500 10 310 180 -240.82 ± 17.32 62 177 10 1 0 -643.7 ± 122.54
450326 ncm-dbt-03 586943 500 9 334 157 -269.36 ± 20.68 87 151 12 0 0 -643.67 ± 110.29
450325 ncm-dbt-04 565863 500 7 313 180 -247.41 ± 17.65 67 172 11 0 0 -659.13 ± 116.77
450324 ncm-dbt-02 589753 500 8 316 176 -249.64 ± 18.47 71 166 13 0 0 -629.41 ± 104.8
450323 ncm-dbt-05 581985 500 13 315 172 -243.0 ± 18.13 67 168 15 0 0 -603.84 ± 95.91
450322 ncm-dbt-01 581319 500 5 327 168 -265.78 ± 19.69 81 161 7 1 0 -694.74 ± 156.93
450321 ncm-dbt-03 585970 500 6 319 175 -255.29 ± 18.11 72 169 9 0 0 -694.7 ± 134.18
450320 ncm-dbt-05 582235 500 4 309 187 -246.3 ± 16.39 62 181 7 0 0 -739.05 ± 163.27
450319 ncm-dbt-02 589155 500 4 314 182 -251.89 ± 17.4 67 177 5 1 0 -739.1 ± 208.89
450318 ncm-dbt-04 567640 500 6 315 179 -250.76 ± 18.62 71 168 10 1 0 -643.7 ± 122.54

Commit

Commit ID 2810a1ea85b3fbe62095fcb24442c08306f00af3
Author Stéphane Nicolet
Date 2020-06-28 20:03:10 UTC
Increase value of pawns on fifth rank This patch increases the endgame value of pawns on the fifth rank. The increase is very small (+1 evaluation point, about 0.005 pawn) for the pawns on external columns (a-b-c-f-g-h) and a bit bigger (+7 evaluation points, about 0.033 pawn) for the pawns on d5/e5. STC: LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 79864 W: 15331 L: 15027 D: 49506 Ptnml(0-2): 1336, 9284, 18433, 9498, 1381 https://tests.stockfishchess.org/tests/view/5ef73e2ef993893290cc0c47 LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 47240 W: 5927 L: 5630 D: 35683 Ptnml(0-2): 320, 4133, 14440, 4384, 343 https://tests.stockfishchess.org/tests/view/5ef7c0c4f993893290cc14b7 closes https://github.com/official-stockfish/Stockfish/pull/2776 Bench: 4794633
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