Dev Builds » 20230412-1845

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 06:57:52 583042 4014 1327 802 1885 +45.7 ± 5.05 1 224 1038 737 7 +91.93 ± 10.51
ncm-dbt-02 06:57:52 586266 3994 1244 765 1985 +41.87 ± 5.11 4 237 1038 712 6 +84.62 ± 10.52
ncm-dbt-03 06:56:41 586648 4000 1240 790 1970 +39.25 ± 5.09 2 253 1041 701 3 +79.35 ± 10.51
ncm-dbt-04 06:58:02 570771 4008 1291 774 1943 +45.07 ± 5.11 2 230 1031 731 10 +90.22 ± 10.55
ncm-dbt-05 06:57:50 582956 3984 1243 812 1929 +37.73 ± 5.09 5 243 1066 672 6 +76.2 ± 10.35
20000 6345 3943 9712 +41.93 ± 2.28 14 1187 5214 3553 32 +84.45 ± 4.69

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
409249 ncm-dbt-04 569230 8 4 2 2 +88.62 ± 93.84 0 0 2 2 0 +190.67 ± 458.56 ↓
409248 ncm-dbt-01 582736 14 5 4 5 +24.82 ± 45.76 0 0 6 1 0 +49.92 ± 94.39 ↓
409247 ncm-dbt-05 581153 484 152 97 235 +39.65 ± 14.01 0 26 136 79 1 +78.85 ± 28.78 ↓
409246 ncm-dbt-02 582318 494 149 92 253 +40.27 ± 14.52 0 29 135 80 3 +77.2 ± 29.06 ↓
409245 ncm-dbt-03 586646 500 150 101 249 +34.16 ± 15.53 1 41 116 92 0 +70.44 ± 31.69 ↓
409244 ncm-dbt-04 571190 500 163 104 233 +41.19 ± 14.57 0 31 131 86 2 +80.63 ± 29.67 ↓
409243 ncm-dbt-01 580945 500 159 110 231 +34.16 ± 14.26 0 34 133 83 0 +68.99 ± 29.43 ↓
409242 ncm-dbt-05 582110 500 143 95 262 +33.46 ± 13.94 0 32 138 80 0 +67.55 ± 28.74 ↓
409241 ncm-dbt-02 586689 500 166 92 242 +51.8 ± 14.08 0 25 126 99 0 +106.01 ± 30.26 ↓
409240 ncm-dbt-03 586731 500 164 98 238 +46.13 ± 14.18 0 26 134 88 2 +90.97 ± 29.17 ↓
409239 ncm-dbt-01 584579 500 161 90 249 +49.67 ± 14.1 0 26 127 97 0 +101.46 ± 30.14 ↓
409238 ncm-dbt-04 570909 500 162 85 253 +53.93 ± 15.5 1 30 112 105 2 +109.07 ± 32.29 ↓
409237 ncm-dbt-05 579083 500 174 111 215 +44.01 ± 14.73 0 32 124 93 1 +88.0 ± 30.62 ↓
409236 ncm-dbt-02 584664 500 150 105 245 +31.36 ± 14.47 2 31 137 80 0 +66.1 ± 28.89 ↓
409235 ncm-dbt-03 583950 500 144 95 261 +34.16 ± 14.26 0 34 133 83 0 +68.99 ± 29.43 ↓
409234 ncm-dbt-01 584369 500 160 109 231 +35.56 ± 13.81 0 30 139 81 0 +71.89 ± 28.58 ↓
409233 ncm-dbt-04 571230 500 177 98 225 +55.36 ± 14.12 0 23 126 100 1 +112.14 ± 30.22 ↓
409232 ncm-dbt-05 579207 500 144 104 252 +27.86 ± 14.09 1 33 141 75 0 +57.5 ± 28.38 ↓
409231 ncm-dbt-02 588004 500 153 100 247 +36.97 ± 14.96 1 35 124 90 0 +76.25 ± 30.64 ↓
409230 ncm-dbt-03 586858 500 164 99 237 +45.42 ± 14.81 0 33 119 98 0 +92.46 ± 31.31 ↓
409229 ncm-dbt-04 570469 500 162 107 231 +38.37 ± 14.26 1 27 140 80 2 +76.25 ± 28.4 ↓
409228 ncm-dbt-01 585843 500 172 106 222 +46.13 ± 13.77 0 24 137 88 1 +92.46 ± 28.72 ↓
409227 ncm-dbt-02 587113 500 167 102 231 +45.42 ± 14.14 0 28 129 93 0 +92.46 ± 29.89 ↓
409226 ncm-dbt-05 582485 500 153 107 240 +32.05 ± 15.15 1 38 126 84 1 +64.66 ± 30.39 ↓
409225 ncm-dbt-04 570428 500 145 101 254 +30.65 ± 14.81 0 40 126 84 0 +61.79 ± 30.39 ↓
409224 ncm-dbt-03 588047 500 167 105 228 +43.3 ± 14.16 1 25 136 87 1 +88.0 ± 28.9 ↓
409223 ncm-dbt-01 580613 500 170 102 228 +47.55 ± 13.99 0 26 130 94 0 +96.94 ± 29.72 ↓
409222 ncm-dbt-02 586901 500 157 94 249 +44.01 ± 14.33 0 29 130 90 1 +88.0 ± 29.77 ↓
409221 ncm-dbt-05 584622 500 164 92 244 +50.38 ± 14.68 1 26 124 98 1 +102.97 ± 30.57 ↓
409220 ncm-dbt-04 570709 500 162 96 242 +46.13 ± 13.77 0 25 134 91 0 +93.95 ± 29.15 ↓
409219 ncm-dbt-03 587028 500 157 101 242 +39.08 ± 13.34 0 25 144 81 0 +79.17 ± 27.79 ↓
409218 ncm-dbt-01 583908 500 156 89 255 +46.84 ± 15.27 0 32 123 91 4 +89.48 ± 30.76 ↓
409217 ncm-dbt-02 588174 500 159 95 246 +44.72 ± 14.51 1 28 127 94 0 +92.46 ± 30.18 ↓
409216 ncm-dbt-05 586266 500 165 107 228 +40.48 ± 14.52 1 29 132 87 1 +82.1 ± 29.52 ↓
409215 ncm-dbt-03 587622 500 145 107 248 +26.46 ± 14.78 0 42 128 80 0 +53.22 ± 30.14 ↓
409214 ncm-dbt-01 581402 500 176 87 237 +62.51 ± 15.11 1 24 112 111 2 +127.76 ± 32.29 ↓
409213 ncm-dbt-04 571511 500 155 97 248 +40.48 ± 13.99 0 28 137 84 1 +80.63 ± 28.81 ↓
409212 ncm-dbt-02 586266 500 143 85 272 +40.48 ± 14.65 0 32 130 86 2 +79.17 ± 29.81 ↓
409211 ncm-dbt-03 586308 500 149 84 267 +45.42 ± 14.01 0 27 131 92 0 +92.46 ± 29.6 ↓
409210 ncm-dbt-05 588728 500 148 99 253 +34.16 ± 13.85 1 27 145 76 1 +68.99 ± 27.73 ↓
409209 ncm-dbt-01 582987 500 168 105 227 +44.01 ± 14.06 0 28 131 91 0 +89.48 ± 29.62 ↓
409208 ncm-dbt-04 571270 500 161 84 255 +53.93 ± 14.59 0 26 123 99 2 +107.54 ± 30.7 ↓

Commit

Commit ID acb0d204d56e16398c58822df2cc60b90ef1ae85
Author Michael Chaly
Date 2023-04-12 18:45:34 UTC
Simplify stats assignment for Pv nodes This patch is a simplification of my recent elo gainer. Logically the Elo gainer didn't make much sense and this patch simplifies it into smth more logical. Instead of assigning negative bonuses to all non-first moves that enter PV nodes we assign positive bonuses in full depth search after LMR only for moves that will result in a fail high - thus not assigning positive bonuses for moves that will go to pv search - so doing "almost" the same as we do in master now for them. Logic differs for some other moves, though, but this removes some lines of code. Passed STC: https://tests.stockfishchess.org/tests/view/642cf5cf77ff3301150dc5ec LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 409320 W: 109124 L: 109308 D: 190888 Ptnml(0-2): 1149, 45385, 111751, 45251, 1124 Passed LTC: https://tests.stockfishchess.org/tests/view/642fe75d20eb941419bde200 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 260336 W: 70280 L: 70303 D: 119753 Ptnml(0-2): 99, 25236, 79528, 25199, 106 closes https://github.com/official-stockfish/Stockfish/pull/4522 Bench: 4286815
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