Dev Builds » 20210923-2124

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 06:53:39 584711 4000 685 1357 1958 -58.93 ± 5.22 9 863 922 203 3 -120.28 ± 11.21
ncm-dbt-02 06:54:05 586759 4000 728 1332 1940 -52.87 ± 5.07 10 784 1008 196 2 -106.78 ± 10.67
ncm-dbt-03 06:53:12 587318 4000 712 1352 1936 -56.07 ± 5.07 8 816 988 184 4 -114.45 ± 10.78
ncm-dbt-04 06:53:07 572263 4000 689 1337 1974 -56.78 ± 5.06 10 816 987 186 1 -115.03 ± 10.79
ncm-dbt-05 06:53:52 586302 4000 668 1312 2020 -56.43 ± 5.16 12 822 967 196 3 -114.26 ± 10.92
20000 3482 6690 9828 -56.21 ± 2.29 49 4101 4872 965 13 -114.14 ± 4.86

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
380391 ncm-dbt-04 574500 500 88 169 243 -56.78 ± 13.91 1 100 128 21 0 -115.23 ± 29.89
380390 ncm-dbt-01 583824 500 91 175 234 -58.93 ± 14.83 1 108 116 24 1 -121.46 ± 31.7
380389 ncm-dbt-05 588260 500 89 165 246 -53.22 ± 14.69 0 104 119 26 1 -110.6 ± 31.28
380388 ncm-dbt-03 587282 500 69 173 258 -73.33 ± 14.15 3 114 117 16 0 -148.85 ± 31.38
380387 ncm-dbt-02 584034 500 79 159 262 -56.07 ± 14.43 1 103 121 25 0 -113.68 ± 30.97
380386 ncm-dbt-04 570789 500 73 177 250 -73.34 ± 14.44 1 121 110 17 1 -153.86 ± 32.54
380385 ncm-dbt-05 588217 500 87 157 256 -48.96 ± 15.13 2 98 118 32 0 -96.94 ± 31.44
380384 ncm-dbt-03 587113 500 90 166 244 -53.22 ± 14.95 1 103 118 27 1 -109.07 ± 31.43
380383 ncm-dbt-01 586139 500 81 159 260 -54.64 ± 15.78 2 109 104 35 0 -109.07 ± 33.4
380382 ncm-dbt-02 587792 500 80 157 263 -53.93 ± 14.46 1 101 122 26 0 -109.07 ± 30.84
380381 ncm-dbt-05 587579 500 78 170 252 -64.66 ± 14.67 1 114 111 24 0 -132.54 ± 32.44
380380 ncm-dbt-04 570869 500 96 161 243 -45.42 ± 15.32 2 96 117 35 0 -89.48 ± 31.58
380379 ncm-dbt-03 586901 500 90 179 231 -62.51 ± 14.72 1 112 112 25 0 -127.76 ± 32.29
380378 ncm-dbt-01 584579 500 84 177 239 -65.38 ± 13.42 0 109 125 16 0 -135.76 ± 30.17
380377 ncm-dbt-02 584327 500 94 162 244 -47.54 ± 14.66 1 96 123 30 0 -95.44 ± 30.74
380376 ncm-dbt-05 585211 500 83 163 254 -56.07 ± 14.96 2 103 119 25 1 -113.68 ± 31.27
380375 ncm-dbt-04 572356 500 68 163 269 -66.82 ± 13.03 1 105 132 12 0 -137.37 ± 28.94
380374 ncm-dbt-01 587494 500 88 179 233 -63.94 ± 14.37 2 108 119 21 0 -129.35 ± 31.2
380373 ncm-dbt-03 588856 500 83 165 252 -57.5 ± 13.66 1 97 137 13 2 -119.89 ± 28.38
380372 ncm-dbt-02 590053 500 83 180 237 -68.27 ± 14.67 4 109 117 20 0 -135.76 ± 31.48
380371 ncm-dbt-04 573810 500 76 162 262 -60.36 ± 14.21 1 106 121 22 0 -123.02 ± 30.92
380370 ncm-dbt-01 582527 500 91 157 252 -46.13 ± 15.23 0 101 115 33 1 -95.44 ± 31.86
380369 ncm-dbt-05 585632 500 80 158 262 -54.64 ± 13.23 1 93 139 17 0 -110.6 ± 28.19
380368 ncm-dbt-03 585464 500 100 159 241 -41.19 ± 14.03 0 87 136 26 1 -85.04 ± 28.92
380367 ncm-dbt-02 586816 500 104 153 243 -34.16 ± 15.29 1 87 123 38 1 -68.99 ± 30.78
380366 ncm-dbt-04 570589 500 98 164 238 -46.13 ± 14.45 0 96 124 30 0 -93.95 ± 30.6
380365 ncm-dbt-01 581610 500 82 163 255 -56.78 ± 15.63 3 106 111 29 1 -113.68 ± 32.44
380364 ncm-dbt-05 587409 500 84 167 249 -58.21 ± 14.79 2 104 120 23 1 -118.33 ± 31.1
380363 ncm-dbt-03 586731 500 101 176 223 -52.51 ± 14.66 0 104 117 29 0 -107.54 ± 31.57
380362 ncm-dbt-02 584790 500 111 166 223 -38.37 ± 13.15 1 76 150 23 0 -76.25 ± 26.91
380361 ncm-dbt-04 572880 500 90 166 244 -53.22 ± 14.29 2 96 128 24 0 -106.01 ± 29.96
380360 ncm-dbt-05 585253 500 98 177 225 -55.36 ± 14.66 3 98 124 25 0 -109.07 ± 30.54
380359 ncm-dbt-01 585042 500 85 168 247 -58.21 ± 13.55 0 102 129 19 0 -119.89 ± 29.69
380358 ncm-dbt-03 585632 500 90 172 238 -57.5 ± 14.22 2 100 126 22 0 -115.23 ± 30.2
380357 ncm-dbt-02 587367 500 86 185 229 -69.71 ± 13.59 0 115 119 16 0 -145.54 ± 31.07
380356 ncm-dbt-04 572316 500 100 175 225 -52.51 ± 14.39 2 96 127 25 0 -104.49 ± 30.12
380355 ncm-dbt-05 582861 500 69 155 276 -60.36 ± 14.49 1 108 117 24 0 -123.02 ± 31.54
380354 ncm-dbt-03 590567 500 89 162 249 -51.09 ± 14.18 0 99 125 26 0 -104.49 ± 30.42
380353 ncm-dbt-01 586477 500 83 179 238 -67.54 ± 15.05 1 120 103 26 0 -138.99 ± 33.68
380352 ncm-dbt-02 588899 500 91 170 239 -55.36 ± 13.84 1 97 133 18 1 -113.68 ± 29.12

Commit

Commit ID ff3fa0c664a5799e5531b0908018c59633d761bf
Author Stéphane Nicolet
Date 2021-09-23 21:24:28 UTC
Tweak doubly singular condition (Topo's patch) This patch relax a little bit the condition for doubly singular moves (ie moves that are so forced that we think that they deserve a local double extension of the search). We lower the margin and allow up to six such double extensions in the path between the root and the critical node. Original idea by Siad Daboul (@TopoIogist) in PR #3709 Tested with the previous commit: passed STC: LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 33048 W: 8458 L: 8236 D: 16354 Ptnml(0-2): 120, 3701, 8660, 3923, 120 https://tests.stockfishchess.org/tests/view/614b24347bdc23e77ceb88fe passed LTC: LLR: 2.95 (-2.94,2.94) <0.50,3.50> Total: 54176 W: 13712 L: 13406 D: 27058 Ptnml(0-2): 36, 5653, 15399, 5969, 31 https://tests.stockfishchess.org/tests/view/614b3b727bdc23e77ceb8911 closes https://github.com/official-stockfish/Stockfish/pull/3714 Bench: 5792377
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