Dev Builds » 20210526-1532

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 06:46:50 582999 3990 332 1747 1911 -128.81 ± 5.02 79 1303 567 46 0 -281.48 ± 14.31
ncm-dbt-02 06:47:48 586023 4002 369 1788 1845 -128.78 ± 5.15 101 1258 602 39 1 -274.94 ± 13.87
ncm-dbt-03 06:47:42 585769 4008 352 1751 1905 -126.59 ± 4.96 75 1291 597 40 1 -276.18 ± 13.93
ncm-dbt-04 06:46:24 566636 4000 358 1756 1886 -126.77 ± 5.02 74 1301 574 51 0 -276.69 ± 14.23
ncm-dbt-05 06:47:38 582184 4000 326 1785 1889 -132.84 ± 5.17 97 1317 534 52 0 -288.71 ± 14.76
20000 1737 8827 9436 -128.75 ± 2.27 426 6470 2874 228 2 -279.55 ± 6.35

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
455327 ncm-dbt-02 585211 2 1 1 0 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47
455326 ncm-dbt-03 586604 8 0 3 5 -136.8 ± 89.09 0 3 1 0 0 -337.69 ± 541.44
455325 ncm-dbt-01 585928 490 50 218 222 -124.15 ± 15.02 13 148 78 6 0 -259.13 ± 38.83
455324 ncm-dbt-05 582444 500 44 220 236 -127.76 ± 15.25 13 159 69 9 0 -270.57 ± 41.4
455323 ncm-dbt-04 567205 500 55 226 219 -123.81 ± 14.48 11 155 78 6 0 -263.42 ± 38.85
455322 ncm-dbt-02 584790 500 48 219 233 -123.81 ± 13.98 9 158 78 5 0 -268.17 ± 38.8
455321 ncm-dbt-03 586054 500 47 222 231 -126.97 ± 13.58 11 154 84 1 0 -273.0 ± 36.86
455320 ncm-dbt-01 582110 500 35 228 237 -141.44 ± 14.33 12 175 57 6 0 -318.25 ± 45.73
455319 ncm-dbt-04 569230 500 42 212 246 -123.02 ± 13.47 7 160 79 4 0 -270.57 ± 38.47
455318 ncm-dbt-05 582485 500 38 221 241 -133.34 ± 14.68 12 166 65 7 0 -290.66 ± 42.73
455317 ncm-dbt-02 585928 500 46 224 230 -129.35 ± 15.07 14 156 75 4 1 -275.45 ± 39.63
455316 ncm-dbt-03 581236 500 39 221 240 -132.54 ± 14.36 13 160 73 4 0 -285.49 ± 40.16
455315 ncm-dbt-01 582736 500 50 215 235 -119.11 ± 15.3 12 151 77 10 0 -247.41 ± 39.15
455314 ncm-dbt-04 567086 500 36 207 257 -123.81 ± 13.1 4 168 73 5 0 -280.42 ± 40.21
455313 ncm-dbt-02 585464 500 36 215 249 -130.14 ± 14.06 13 155 80 2 0 -277.93 ± 38.02
455312 ncm-dbt-05 583740 500 31 235 234 -150.51 ± 15.3 19 172 53 6 0 -330.23 ± 47.44
455311 ncm-dbt-03 585169 500 51 219 230 -121.45 ± 14.17 10 153 82 5 0 -258.75 ± 37.76
455310 ncm-dbt-01 583237 500 44 207 249 -117.55 ± 13.87 6 158 79 7 0 -256.44 ± 38.62
455309 ncm-dbt-05 585295 500 40 221 239 -131.74 ± 13.3 8 168 71 3 0 -295.94 ± 40.69
455308 ncm-dbt-02 587070 500 45 221 234 -127.76 ± 16.62 19 150 69 12 0 -256.44 ± 41.25
455307 ncm-dbt-03 586435 500 47 200 253 -109.83 ± 14.53 4 157 78 10 1 -240.82 ± 38.87
455306 ncm-dbt-04 566217 500 47 222 231 -126.97 ± 13.94 8 165 71 6 0 -280.42 ± 40.83
455305 ncm-dbt-01 583112 500 39 222 239 -133.34 ± 13.45 8 171 67 4 0 -301.33 ± 42.04
455304 ncm-dbt-04 566060 500 42 220 238 -129.35 ± 15.86 12 168 56 14 0 -277.93 ± 45.18
455303 ncm-dbt-02 587707 500 49 229 222 -130.94 ± 14.72 14 157 74 5 0 -277.93 ± 39.92
455302 ncm-dbt-05 582861 500 42 223 235 -131.74 ± 14.37 12 162 71 5 0 -285.49 ± 40.81
455301 ncm-dbt-03 587622 500 30 224 246 -142.25 ± 13.18 10 176 62 2 0 -327.18 ± 43.69
455300 ncm-dbt-01 581652 500 38 225 237 -136.56 ± 13.73 9 174 62 5 0 -309.64 ± 43.82
455299 ncm-dbt-05 581860 500 50 221 229 -123.81 ± 14.97 10 161 69 10 0 -265.78 ± 41.36
455298 ncm-dbt-04 562768 500 42 218 240 -127.76 ± 13.57 7 167 71 5 0 -285.49 ± 40.81
455297 ncm-dbt-02 587155 500 46 222 232 -127.76 ± 13.02 7 164 77 2 0 -285.49 ± 38.83
455296 ncm-dbt-03 587622 500 48 217 235 -122.24 ± 14.33 7 164 70 9 0 -268.17 ± 41.1
455295 ncm-dbt-01 581777 500 39 211 250 -124.6 ± 13.62 9 157 81 3 0 -270.57 ± 37.86
455294 ncm-dbt-05 581028 500 44 224 232 -130.94 ± 14.89 13 161 69 7 0 -280.42 ± 41.44
455293 ncm-dbt-02 585843 500 50 229 221 -130.14 ± 15.06 16 152 77 5 0 -270.57 ± 39.07
455292 ncm-dbt-04 567244 500 45 221 234 -127.76 ± 14.6 10 164 68 8 0 -277.93 ± 41.74
455291 ncm-dbt-03 585506 500 46 225 229 -130.14 ± 13.88 10 163 73 4 0 -285.49 ± 40.16
455290 ncm-dbt-01 583447 500 37 221 242 -134.15 ± 13.97 10 169 66 5 0 -298.62 ± 42.41
455289 ncm-dbt-03 585674 500 44 220 236 -127.76 ± 14.1 10 161 74 5 0 -277.93 ± 39.92
455288 ncm-dbt-04 567284 500 49 230 221 -131.74 ± 14.54 15 154 78 3 0 -277.93 ± 38.66
455287 ncm-dbt-02 585042 500 48 228 224 -130.94 ± 13.69 9 166 71 4 0 -290.66 ± 40.76
455286 ncm-dbt-05 577766 500 37 220 243 -133.34 ± 13.99 10 168 67 5 0 -295.94 ± 42.08

Commit

Commit ID 1b325bf86d02e02af8f693e7e1e70c8be5c7967b
Author Stefan Geschwentner
Date 2021-05-26 15:32:54 UTC
Less reduction for capture/promotions. Exclude captures/promotions at expected cut nodes (which also not a former PV node) from LMR if a response to the first previous opponent move. STC: LLR: 2.93 (-2.94,2.94) <-0.50,2.50> Total: 288656 W: 24886 L: 24413 D: 239357 Ptnml(0-2): 900, 19738, 102578, 20213, 899 https://tests.stockfishchess.org/tests/view/60ad505112066fd29979595b LTC: LLR: 2.97 (-2.94,2.94) <0.50,3.50> Total: 31344 W: 1107 L: 975 D: 29262 Ptnml(0-2): 12, 879, 13757, 1013, 11 https://tests.stockfishchess.org/tests/view/60adffce12066fd2997959d2 closes https://github.com/official-stockfish/Stockfish/pull/3500 Bench: 3827710
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