Dev Builds » 20200617-0541

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 06:29:23 583966 4000 68 2554 1378 -252.74 ± 6.54 579 1329 91 1 0 -649.34 ± 36.17
ncm-dbt-02 06:29:32 586487 4002 73 2559 1370 -252.56 ± 6.59 582 1324 93 2 0 -641.94 ± 35.76
ncm-dbt-03 06:29:34 585242 4006 75 2569 1362 -253.34 ± 6.6 587 1321 94 1 0 -643.96 ± 35.57
ncm-dbt-04 06:28:26 568142 3992 78 2571 1343 -254.44 ± 6.78 603 1288 104 1 0 -625.68 ± 33.77
ncm-dbt-05 06:29:48 583605 4000 70 2563 1367 -253.73 ± 6.56 584 1326 89 1 0 -653.21 ± 36.59
20000 364 12816 6820 -253.36 ± 2.96 2935 6588 471 6 0 -642.59 ± 15.73

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
463086 ncm-dbt-02 586393 2 0 2 0 -1041.08 ± 395.59 1 0 0 0 0 -1129.65 ± 376.02
463085 ncm-dbt-03 585843 6 0 3 3 -190.46 ± 18.51 0 3 0 0 0 -1199.83 ± 276.48
463084 ncm-dbt-04 568832 492 13 312 167 -245.04 ± 18.87 69 161 16 0 0 -589.37 ± 92.22
463083 ncm-dbt-05 581028 500 12 322 166 -251.89 ± 18.76 73 164 13 0 0 -629.41 ± 104.8
463082 ncm-dbt-01 584076 500 7 328 165 -264.59 ± 18.7 78 165 7 0 0 -739.05 ± 163.27
463081 ncm-dbt-02 588600 500 7 317 176 -251.89 ± 17.68 69 172 9 0 0 -694.7 ± 134.18
463080 ncm-dbt-03 586223 500 6 318 176 -254.15 ± 18.24 72 168 10 0 0 -676.04 ± 124.55
463079 ncm-dbt-04 569190 500 9 318 173 -250.76 ± 19.14 74 161 15 0 0 -603.84 ± 95.91
463078 ncm-dbt-01 584495 500 9 321 170 -254.15 ± 18.52 73 166 11 0 0 -659.13 ± 116.77
463077 ncm-dbt-05 580365 500 6 317 177 -253.02 ± 17.82 70 171 9 0 0 -694.7 ± 134.18
463076 ncm-dbt-02 581902 500 10 313 177 -244.09 ± 17.75 66 171 13 0 0 -629.41 ± 104.8
463075 ncm-dbt-03 584748 500 8 325 167 -259.9 ± 18.41 75 167 8 0 0 -715.51 ± 146.53
463074 ncm-dbt-04 566967 500 3 321 176 -261.07 ± 18.26 75 168 7 0 0 -739.05 ± 163.27
463073 ncm-dbt-01 583782 500 12 318 170 -247.41 ± 19.45 73 161 15 1 0 -581.4 ± 95.42
463072 ncm-dbt-05 583531 500 10 313 177 -244.1 ± 17.75 65 174 10 1 0 -643.7 ± 122.54
463071 ncm-dbt-02 586858 500 11 327 162 -258.74 ± 19.63 79 158 13 0 0 -629.41 ± 104.8
463070 ncm-dbt-03 585970 500 7 322 171 -257.59 ± 18.68 75 165 10 0 0 -676.04 ± 124.55
463069 ncm-dbt-04 569151 500 17 321 162 -245.2 ± 20.12 75 155 19 1 0 -543.25 ± 83.19
463068 ncm-dbt-05 584201 500 10 322 168 -254.15 ± 18.78 74 164 12 0 0 -643.67 ± 110.29
463067 ncm-dbt-01 583866 500 10 315 175 -246.3 ± 17.78 67 171 12 0 0 -643.67 ± 110.29
463066 ncm-dbt-02 586012 500 12 331 157 -262.24 ± 20.59 83 154 12 1 0 -616.2 ± 109.19
463065 ncm-dbt-03 583405 500 9 322 169 -255.3 ± 19.46 76 162 11 1 0 -629.43 ± 115.29
463064 ncm-dbt-04 567799 500 11 323 166 -254.15 ± 19.05 75 162 13 0 0 -629.41 ± 104.8
463063 ncm-dbt-05 586012 500 6 337 157 -276.68 ± 21.3 92 147 11 0 0 -659.13 ± 116.77
463062 ncm-dbt-01 583028 500 9 314 177 -246.3 ± 18.04 68 169 13 0 0 -629.41 ± 104.8
463061 ncm-dbt-02 587579 500 10 320 170 -251.89 ± 19.02 74 162 14 0 0 -616.18 ± 100.06
463060 ncm-dbt-03 584076 500 17 326 157 -250.76 ± 19.89 77 155 18 0 0 -571.09 ± 86.01
463059 ncm-dbt-04 567759 500 11 312 177 -241.91 ± 17.72 65 171 14 0 0 -616.18 ± 100.06
463058 ncm-dbt-05 586520 500 11 324 165 -255.29 ± 19.46 77 159 14 0 0 -616.18 ± 100.06
463057 ncm-dbt-03 586435 500 6 319 175 -255.29 ± 17.83 71 171 8 0 0 -715.51 ± 146.53
463056 ncm-dbt-02 587155 500 10 317 173 -248.52 ± 18.33 70 167 13 0 0 -629.41 ± 104.8
463055 ncm-dbt-01 585042 500 9 312 179 -244.09 ± 17.75 66 171 13 0 0 -629.41 ± 104.8
463054 ncm-dbt-04 567640 500 7 335 158 -272.99 ± 20.85 89 150 11 0 0 -659.13 ± 116.77
463053 ncm-dbt-02 586435 500 7 320 173 -255.29 ± 18.11 72 169 9 0 0 -694.7 ± 134.18
463052 ncm-dbt-05 583237 500 8 314 178 -247.41 ± 17.38 66 174 10 0 0 -676.04 ± 124.55
463051 ncm-dbt-01 583950 500 7 320 173 -255.29 ± 18.66 74 165 11 0 0 -659.13 ± 116.77
463050 ncm-dbt-03 583154 500 10 312 178 -243.0 ± 18.13 67 168 15 0 0 -603.84 ± 95.91
463049 ncm-dbt-04 567799 500 7 329 164 -265.77 ± 19.41 81 160 9 0 0 -694.7 ± 134.18
463048 ncm-dbt-02 587452 500 6 312 182 -247.41 ± 18.18 68 171 10 1 0 -643.7 ± 122.54
463047 ncm-dbt-03 587325 500 12 322 166 -251.89 ± 19.02 74 162 14 0 0 -616.18 ± 100.06
463046 ncm-dbt-05 583950 500 7 314 179 -248.52 ± 17.52 67 173 10 0 0 -676.04 ± 124.55
463045 ncm-dbt-01 583489 500 5 326 169 -264.59 ± 19.27 80 161 9 0 0 -694.7 ± 134.18

Commit

Commit ID bc3c215490edf24cef0ff87d74ab01eeb91ae1bc
Author Vizvezdenec
Date 2020-06-17 05:41:59 UTC
More reduction for evading pawn moves. pawn moves are irreversable unlike other evading moves; pawn is the least valuable piece in the game. So it makes a lot of sence to assume that evading pawn moves are on average not as good as other evading moves thus can be reduced more. Passed STC https://tests.stockfishchess.org/tests/view/5ee9602e563bc7aa756002dc LLR: 2.95 (-2.94,2.94) {-0.50,1.50} Total: 94176 W: 17993 L: 17668 D: 58515 Ptnml(0-2): 1634, 10742, 21989, 11111, 1612 Passed LTC https://tests.stockfishchess.org/tests/view/5ee97342563bc7aa75600301 LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 20432 W: 2572 L: 2354 D: 15506 Ptnml(0-2): 146, 1707, 6280, 1949, 134 closes https://github.com/official-stockfish/Stockfish/pull/2749 Bench: 5073064
Copyright 2011–2026 Next Chess Move LLC