Dev Builds » 20200731-0747

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 06:32:18 583539 3988 76 2558 1354 -253.23 ± 6.76 596 1292 104 2 0 -622.16 ± 33.77
ncm-dbt-02 06:31:38 586443 4000 65 2540 1395 -251.19 ± 6.58 576 1325 97 2 0 -634.65 ± 35.0
ncm-dbt-03 06:31:36 586264 4000 67 2533 1400 -249.92 ± 6.38 556 1355 88 1 0 -655.17 ± 36.8
ncm-dbt-04 06:31:52 568266 4030 89 2584 1357 -251.39 ± 6.71 594 1310 108 3 0 -614.38 ± 33.12
ncm-dbt-05 06:31:55 580922 3982 63 2537 1382 -252.62 ± 6.47 567 1343 78 3 0 -666.63 ± 39.11
20000 360 12752 6888 -251.67 ± 2.94 2889 6625 475 11 0 -637.5 ± 15.66

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
462395 ncm-dbt-04 568196 30 0 17 13 -223.15 ± 44.67 2 13 0 0 0 -1199.83 ± 135.09
462394 ncm-dbt-05 583908 482 12 304 166 -243.99 ± 17.92 63 166 12 0 0 -637.14 ± 110.25
462393 ncm-dbt-01 581111 488 11 311 166 -248.94 ± 18.96 70 160 14 0 0 -611.84 ± 100.03
462392 ncm-dbt-02 585042 500 3 315 182 -254.16 ± 18.52 72 169 8 1 0 -676.08 ± 142.43
462391 ncm-dbt-03 585928 500 9 315 176 -247.41 ± 17.38 66 174 10 0 0 -676.04 ± 124.55
462390 ncm-dbt-04 569709 500 19 328 153 -250.76 ± 21.77 85 139 26 0 0 -504.31 ± 69.71
462389 ncm-dbt-05 578054 500 14 324 162 -251.89 ± 20.28 78 155 16 1 0 -571.11 ± 91.87
462388 ncm-dbt-01 582193 500 7 316 177 -250.76 ± 18.62 72 165 13 0 0 -629.41 ± 104.8
462387 ncm-dbt-02 586901 500 13 304 183 -231.21 ± 18.95 66 159 25 0 0 -511.49 ± 71.25
462386 ncm-dbt-03 587877 500 11 310 179 -239.73 ± 18.2 66 167 17 0 0 -581.38 ± 88.96
462385 ncm-dbt-04 567958 500 14 320 166 -247.41 ± 18.7 71 164 15 0 0 -603.84 ± 95.91
462384 ncm-dbt-05 579702 500 4 315 181 -253.02 ± 17.54 69 173 8 0 0 -715.51 ± 146.53
462383 ncm-dbt-01 585548 500 12 317 171 -246.3 ± 18.81 71 163 16 0 0 -592.27 ± 92.24
462382 ncm-dbt-02 587367 500 7 326 167 -262.24 ± 18.7 77 165 8 0 0 -715.51 ± 146.53
462381 ncm-dbt-03 585717 500 14 313 173 -239.73 ± 17.69 64 171 15 0 0 -603.84 ± 95.91
462380 ncm-dbt-04 565154 500 11 323 166 -254.16 ± 19.31 75 163 11 1 0 -629.43 ± 115.29
462379 ncm-dbt-05 579413 500 8 313 179 -246.3 ± 17.23 64 178 7 1 0 -694.74 ± 156.93
462378 ncm-dbt-01 584790 500 11 324 165 -255.29 ± 18.93 75 163 12 0 0 -643.67 ± 110.29
462377 ncm-dbt-02 583614 500 7 323 170 -258.74 ± 18.82 76 164 10 0 0 -676.04 ± 124.55
462376 ncm-dbt-03 587749 500 6 315 179 -250.76 ± 18.35 71 167 12 0 0 -643.67 ± 110.29
462375 ncm-dbt-04 567205 500 6 322 172 -258.75 ± 18.82 75 167 7 1 0 -694.74 ± 156.93
462374 ncm-dbt-05 581153 500 6 316 178 -251.89 ± 19.02 73 165 11 1 0 -629.43 ± 115.29
462373 ncm-dbt-01 583908 500 8 322 170 -256.44 ± 18.53 74 166 10 0 0 -676.04 ± 124.55
462372 ncm-dbt-02 586858 500 7 310 183 -244.1 ± 18.01 66 172 11 1 0 -629.43 ± 115.29
462371 ncm-dbt-03 586774 500 8 317 175 -250.76 ± 18.08 70 169 11 0 0 -659.13 ± 116.77
462370 ncm-dbt-04 566888 500 11 314 175 -244.09 ± 17.75 66 171 13 0 0 -629.41 ± 104.8
462369 ncm-dbt-05 583321 500 6 322 172 -258.74 ± 17.68 72 172 6 0 0 -766.17 ± 188.02
462368 ncm-dbt-01 585464 500 13 332 155 -262.24 ± 21.6 87 146 16 1 0 -571.11 ± 91.87
462367 ncm-dbt-02 588302 500 9 333 158 -268.16 ± 19.99 84 156 10 0 0 -676.04 ± 124.55
462366 ncm-dbt-04 570188 500 8 310 182 -243.0 ± 18.13 67 168 15 0 0 -603.84 ± 95.91
462365 ncm-dbt-03 585885 500 5 314 181 -250.76 ± 17.53 67 176 6 1 0 -715.55 ± 177.2
462364 ncm-dbt-05 578506 500 4 322 174 -261.07 ± 18.26 75 168 7 0 0 -739.05 ± 163.27
462363 ncm-dbt-02 585590 500 11 313 176 -243.0 ± 18.13 67 168 15 0 0 -603.84 ± 95.91
462362 ncm-dbt-01 583070 500 8 316 176 -249.64 ± 18.99 72 165 12 1 0 -616.2 ± 109.19
462361 ncm-dbt-04 569350 500 11 324 165 -255.3 ± 19.19 75 164 10 1 0 -643.7 ± 122.54
462360 ncm-dbt-03 582945 500 6 319 175 -255.29 ± 17.83 71 171 8 0 0 -715.51 ± 146.53
462359 ncm-dbt-05 583321 500 9 321 170 -254.15 ± 18.52 73 166 11 0 0 -659.13 ± 116.77
462358 ncm-dbt-01 582235 500 6 320 174 -256.44 ± 18.8 75 164 11 0 0 -659.13 ± 116.77
462357 ncm-dbt-04 569749 500 9 326 165 -259.9 ± 19.24 78 161 11 0 0 -659.13 ± 116.77
462356 ncm-dbt-03 587240 500 8 330 162 -265.77 ± 19.41 81 160 9 0 0 -694.7 ± 134.18
462355 ncm-dbt-02 587877 500 8 316 176 -249.64 ± 17.67 68 172 10 0 0 -676.04 ± 124.55

Commit

Commit ID f0abde241d39ee4507778bf41b392492c5391652
Author protonspring
Date 2020-07-31 07:47:24 UTC
Remove conditional_more_than_two(). This is a functional simplification that removes the conditional_more_than_two() function, which was quite strange and kooky. Note the very minor change to the bench value. See this thread for relevant comments on the passing branch: protonspring/Stockfish@d89730d...ff35b50 STC LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 59760 W: 11411 L: 11311 D: 37038 Ptnml(0-2): 992, 6863, 14044, 7015, 966 https://tests.stockfishchess.org/tests/view/5f179988c09435d870cb9b9a LTC LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 45208 W: 5553 L: 5497 D: 34158 Ptnml(0-2): 315, 4081, 13761, 4127, 320 https://tests.stockfishchess.org/tests/view/5f184847c09435d870cb9bee closes https://github.com/official-stockfish/Stockfish/pull/2826 Bench: 4578290
Copyright 2011–2026 Next Chess Move LLC