Dev Builds » 20240126-2015

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 06:55:22 586043 4000 1459 612 1929 +74.7 ± 5.07 1 141 885 956 17 +153.65 ± 11.42
ncm-dbt-02 06:55:25 586371 4000 1443 616 1941 +72.88 ± 5.0 2 133 914 938 13 +150.51 ± 11.22
ncm-dbt-03 06:55:00 586704 4000 1445 615 1940 +73.16 ± 5.03 4 129 916 935 16 +150.93 ± 11.2
ncm-dbt-04 06:55:37 570232 4000 1437 640 1923 +70.17 ± 5.01 2 142 924 921 11 +144.72 ± 11.16
ncm-dbt-05 06:54:53 585373 4000 1446 594 1960 +75.15 ± 4.97 1 130 896 962 11 +155.97 ± 11.34
20000 7230 3077 9693 +73.21 ± 2.24 10 675 4535 4712 68 +151.14 ± 5.04

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
401247 ncm-dbt-02 586435 500 184 77 239 +75.52 ± 13.49 0 12 121 115 2 +155.54 ± 30.59
401246 ncm-dbt-04 566572 500 176 84 240 +64.66 ± 15.07 0 25 111 111 3 +129.35 ± 32.44
401245 ncm-dbt-05 583154 500 171 74 255 +68.27 ± 14.26 0 18 120 109 3 +137.37 ± 30.98
401244 ncm-dbt-03 583572 500 173 75 252 +68.99 ± 13.86 0 18 116 116 0 +143.89 ± 31.59
401243 ncm-dbt-01 584537 500 186 67 247 +84.3 ± 14.33 0 16 101 131 2 +176.33 ± 34.04
401242 ncm-dbt-02 584076 500 167 78 255 +62.51 ± 14.58 2 18 120 109 1 +130.94 ± 31.03
401241 ncm-dbt-04 570068 500 179 91 230 +61.79 ± 14.41 2 17 123 107 1 +129.35 ± 30.56
401240 ncm-dbt-05 584664 500 165 75 260 +63.23 ± 14.61 0 23 116 109 2 +127.76 ± 31.68
401239 ncm-dbt-01 590138 500 182 83 235 +69.71 ± 14.03 0 17 119 112 2 +142.26 ± 31.1
401238 ncm-dbt-03 586181 500 187 85 228 +71.89 ± 15.08 1 20 108 118 3 +147.19 ± 32.89
401237 ncm-dbt-02 586520 500 180 83 237 +68.27 ± 13.83 0 17 120 112 1 +140.62 ± 30.95
401236 ncm-dbt-05 582235 500 192 82 226 +77.71 ± 14.58 1 15 110 121 3 +160.64 ± 32.5
401235 ncm-dbt-04 571752 500 168 86 246 +57.5 ± 14.08 0 23 122 105 0 +118.33 ± 30.8
401234 ncm-dbt-01 584916 500 185 68 247 +82.83 ± 14.29 0 17 100 132 1 +174.55 ± 34.22
401233 ncm-dbt-03 585759 500 171 72 257 +69.71 ± 14.17 0 18 117 113 2 +142.26 ± 31.44
401232 ncm-dbt-04 570108 500 178 84 238 +66.1 ± 13.74 0 17 123 109 1 +135.76 ± 30.5
401231 ncm-dbt-02 585928 500 181 84 235 +68.27 ± 13.53 0 15 124 110 1 +140.62 ± 30.27
401230 ncm-dbt-05 582736 500 176 69 255 +75.52 ± 12.87 0 9 126 114 1 +157.24 ± 29.64
401229 ncm-dbt-01 584159 500 187 75 238 +79.17 ± 13.75 0 12 117 118 3 +162.35 ± 31.23
401228 ncm-dbt-03 588984 500 172 73 255 +69.71 ± 13.88 0 17 118 114 1 +143.89 ± 31.26
401227 ncm-dbt-02 584790 500 190 71 239 +84.3 ± 13.42 0 11 110 128 1 +178.11 ± 32.33
401226 ncm-dbt-01 585464 500 181 81 238 +70.43 ± 14.62 0 21 110 117 2 +143.89 ± 32.58
401225 ncm-dbt-04 569749 500 185 70 245 +81.36 ± 13.96 0 15 106 128 1 +171.02 ± 33.15
401224 ncm-dbt-05 580116 500 181 61 258 +85.04 ± 13.9 0 15 100 135 0 +181.7 ± 34.21
401223 ncm-dbt-03 586731 500 186 74 240 +79.17 ± 13.6 0 12 116 120 2 +164.07 ± 31.39
401222 ncm-dbt-04 571070 500 179 76 245 +72.61 ± 13.54 0 14 120 115 1 +150.51 ± 30.84
401221 ncm-dbt-01 586181 500 193 77 230 +82.1 ± 14.42 0 14 111 120 5 +165.8 ± 32.28
401220 ncm-dbt-02 585421 500 174 82 244 +64.66 ± 14.94 0 26 107 116 1 +132.54 ± 33.05
401219 ncm-dbt-05 582318 500 186 81 233 +74.06 ± 14.6 0 21 104 124 1 +153.86 ± 33.54
401218 ncm-dbt-03 586562 500 179 79 242 +70.44 ± 14.89 2 16 115 114 3 +145.54 ± 31.75
401217 ncm-dbt-04 570709 500 184 70 246 +80.63 ± 13.94 0 14 110 124 2 +167.53 ± 32.45
401216 ncm-dbt-05 584664 500 192 86 222 +74.79 ± 13.0 0 10 125 114 1 +155.54 ± 29.86
401215 ncm-dbt-02 587579 500 178 76 246 +71.88 ± 13.96 0 18 112 120 0 +150.51 ± 32.22
401214 ncm-dbt-01 586604 500 177 79 244 +68.99 ± 14.14 0 19 115 115 1 +142.26 ± 31.77
401213 ncm-dbt-03 586731 500 193 85 222 +76.25 ± 14.39 1 13 117 115 4 +155.54 ± 31.31
401212 ncm-dbt-05 603097 500 183 66 251 +82.83 ± 14.44 0 19 95 136 0 +176.33 ± 35.12
401211 ncm-dbt-04 571833 500 188 79 233 +76.97 ± 14.27 0 17 109 122 2 +158.93 ± 32.69
401210 ncm-dbt-03 589112 500 184 72 244 +79.17 ± 13.9 0 15 109 125 1 +165.8 ± 32.64
401209 ncm-dbt-02 590224 500 189 65 246 +88.0 ± 14.99 0 16 100 128 6 +178.11 ± 34.22
401208 ncm-dbt-01 586350 500 168 82 250 +60.36 ± 15.02 1 25 112 111 1 +124.6 ± 32.29

Commit

Commit ID fcbb02ffdeebb65c970ecf5aebaa3078cdf8f374
Author Viren6
Date 2024-01-26 20:15:07 UTC
Use ttPv in depth condition of singular extensions This replaces the PvNode condition and tte Pv call previously with using the precomputed ttPv, and also removes the multiplier of 2. This new depth condition occurs with approximately equal frequency (47%) to the old depth condition (measured when the other conditions in the if are true), so non-linear scaling behaviour isn't expected. Passed Non-Reg STC: https://tests.stockfishchess.org/tests/view/65b0e132c865510db026da27 LLR: 2.97 (-2.94,2.94) <-1.75,0.25> Total: 243232 W: 62432 L: 62437 D: 118363 Ptnml(0-2): 910, 28937, 61900, 28986, 883 Passed Non-Reg LTC: https://tests.stockfishchess.org/tests/view/65b2053bc865510db026eea1 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 190596 W: 47666 L: 47618 D: 95312 Ptnml(0-2): 115, 21710, 51596, 21766, 111 closes https://github.com/official-stockfish/Stockfish/pull/5015 Bench: 1492957
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