Dev Builds » 20241222-1428

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 06:51:01 584284 4006 1581 486 1939 +97.45 ± 4.81 1 80 757 1153 12 +210.49 ± 12.36
ncm-dbt-02 06:51:08 585820 4000 1516 557 1927 +84.95 ± 4.86 3 92 860 1033 12 +179.45 ± 11.55
ncm-dbt-03 06:50:30 586603 4000 1571 549 1880 +90.78 ± 4.83 0 92 803 1096 9 +193.87 ± 11.99
ncm-dbt-04 06:51:29 570493 4016 1557 528 1931 +91.05 ± 4.96 1 102 789 1099 17 +192.93 ± 12.11
ncm-dbt-05 06:50:36 583571 3978 1551 506 1921 +93.46 ± 4.89 2 87 776 1112 12 +200.41 ± 12.2
20000 7776 2626 9598 +91.52 ± 2.18 7 453 3985 5493 62 +195.28 ± 5.38

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
391987 ncm-dbt-01 584243 6 2 1 3 +58.33 ± 98.71 0 0 2 1 0 +120.24 ± 264.77 ↓
391986 ncm-dbt-04 573810 16 6 3 7 +65.88 ± 61.23 0 0 5 3 0 +136.9 ± 147.45 ↓
391985 ncm-dbt-05 584159 478 183 61 234 +90.68 ± 13.95 0 11 96 131 1 +193.77 ± 34.84 ↓
391984 ncm-dbt-03 584076 500 195 67 238 +90.97 ± 14.18 0 16 90 144 0 +196.45 ± 36.11 ↓
391983 ncm-dbt-02 585759 500 192 74 234 +83.57 ± 13.87 0 13 108 127 2 +174.55 ± 32.75 ↓
391982 ncm-dbt-01 582736 500 193 59 248 +95.44 ± 14.55 0 14 92 140 4 +200.24 ± 35.72 ↓
391981 ncm-dbt-04 572155 500 209 66 225 +102.22 ± 13.21 0 8 92 149 1 +223.94 ± 35.61 ↓
391980 ncm-dbt-05 585632 500 197 72 231 +88.74 ± 13.52 0 12 101 137 0 +190.85 ± 33.97 ↓
391979 ncm-dbt-03 588771 500 205 68 227 +97.69 ± 13.01 0 7 100 142 1 +211.87 ± 33.93 ↓
391978 ncm-dbt-02 587622 500 201 68 231 +94.69 ± 13.14 0 8 102 139 1 +204.07 ± 33.61 ↓
391977 ncm-dbt-01 586266 500 185 54 261 +93.2 ± 14.36 1 12 94 141 2 +200.24 ± 35.32 ↓
391976 ncm-dbt-04 570749 500 198 63 239 +96.19 ± 15.29 0 19 81 146 4 +202.15 ± 37.89 ↓
391975 ncm-dbt-05 586012 500 200 69 231 +93.2 ± 13.28 0 9 102 138 1 +200.24 ± 33.67 ↓
391974 ncm-dbt-03 585928 500 199 52 249 +105.25 ± 13.05 0 5 96 146 3 +228.08 ± 34.59 ↓
391973 ncm-dbt-02 585042 500 191 58 251 +94.7 ± 13.3 1 5 106 136 2 +204.07 ± 32.73 ↓
391972 ncm-dbt-01 582569 500 198 72 230 +89.48 ± 12.39 0 5 114 131 0 +192.71 ± 31.24 ↓
391971 ncm-dbt-04 572638 500 190 71 239 +84.3 ± 13.88 0 14 104 131 1 +178.11 ± 33.48 ↓
391970 ncm-dbt-05 586308 500 199 63 238 +96.94 ± 13.96 0 10 98 138 4 +204.07 ± 34.47 ↓
391969 ncm-dbt-02 586562 500 192 75 233 +82.83 ± 14.44 0 17 101 130 2 +172.78 ± 34.05 ↓
391968 ncm-dbt-01 584790 500 206 67 227 +99.2 ± 13.83 0 12 88 149 1 +215.85 ± 36.55 ↓
391967 ncm-dbt-03 585759 500 188 75 237 +79.9 ± 13.47 0 12 114 123 1 +167.53 ± 31.71 ↓
391966 ncm-dbt-04 569749 500 187 70 243 +82.83 ± 13.23 0 11 111 128 0 +176.33 ± 32.16 ↓
391965 ncm-dbt-05 583363 500 186 67 247 +84.31 ± 14.62 1 15 100 132 2 +178.11 ± 34.22 ↓
391964 ncm-dbt-01 581610 500 194 67 239 +90.22 ± 13.7 0 12 100 137 1 +192.71 ± 34.15 ↓
391963 ncm-dbt-02 584958 500 191 73 236 +83.57 ± 13.71 1 11 107 131 0 +179.9 ± 32.89 ↓
391962 ncm-dbt-03 587537 500 198 72 230 +89.48 ± 14.3 0 15 96 137 2 +189.0 ± 34.95 ↓
391961 ncm-dbt-04 568196 500 196 64 240 +93.95 ± 15.25 1 14 93 136 6 +194.57 ± 35.52 ↓
391960 ncm-dbt-05 576741 500 199 59 242 +99.95 ± 13.52 0 9 94 145 2 +215.85 ± 35.23 ↓
391959 ncm-dbt-01 585211 500 203 55 242 +106.01 ± 13.05 0 7 89 153 1 +234.38 ± 36.22 ↓
391958 ncm-dbt-03 584958 500 195 84 221 +78.43 ± 14.02 0 15 111 122 2 +162.35 ± 32.31 ↓
391957 ncm-dbt-02 583782 500 175 63 262 +79.17 ± 14.05 0 14 113 120 3 +162.35 ± 31.95 ↓
391956 ncm-dbt-04 570629 500 190 67 243 +87.26 ± 14.4 0 17 94 138 1 +185.33 ± 35.32 ↓
391955 ncm-dbt-05 578054 500 193 52 255 +100.7 ± 13.69 0 12 85 153 0 +221.9 ± 37.21 ↓
391954 ncm-dbt-01 585674 500 199 50 251 +106.77 ± 13.56 0 10 82 157 1 +236.51 ± 37.9 ↓
391953 ncm-dbt-03 586646 500 191 62 247 +91.71 ± 13.57 0 12 97 141 0 +198.34 ± 34.72 ↓
391952 ncm-dbt-04 568236 500 184 64 252 +85.04 ± 13.44 0 11 109 129 1 +179.9 ± 32.5 ↓
391951 ncm-dbt-02 584327 500 188 69 243 +84.3 ± 12.79 0 6 121 121 2 +176.33 ± 30.18 ↓
391950 ncm-dbt-05 588302 500 194 63 243 +93.2 ± 13.91 1 9 100 138 2 +200.24 ± 34.09 ↓
391949 ncm-dbt-03 589155 500 200 69 231 +93.2 ± 13.28 0 10 99 141 0 +202.15 ± 34.28 ↓
391948 ncm-dbt-01 585464 500 201 61 238 +99.95 ± 13.36 0 8 96 144 2 +215.85 ± 34.78 ↓
391947 ncm-dbt-04 568275 500 197 60 243 +97.69 ± 13.5 0 8 100 139 3 +207.95 ± 33.99 ↓
391946 ncm-dbt-02 588515 500 186 77 237 +76.98 ± 14.56 1 18 102 129 0 +164.07 ± 33.88 ↓

Commit

Commit ID 79261bec593267a79a4af9bfb08b2ee848f67dfa
Author Michael Chaly
Date 2024-12-22 14:28:15 UTC
Simplify away reductions adjustment for multithreaded search Seem to no longer bring measurable benefit. Passed STC SMP simplification: https://tests.stockfishchess.org/tests/view/6753561a86d5ee47d954151f LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 38000 W: 9864 L: 9656 D: 18480 Ptnml(0-2): 53, 4177, 10320, 4409, 41 Passed LTC SMP simplification: https://tests.stockfishchess.org/tests/view/6753d75f86d5ee47d9541669 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 258674 W: 66314 L: 66335 D: 126025 Ptnml(0-2): 77, 26957, 75303, 26910, 90 Passed 16 threads LTC simplification: https://tests.stockfishchess.org/tests/view/675a066286d5ee47d9542296 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 221804 W: 56950 L: 56936 D: 107918 Ptnml(0-2): 34, 21491, 67839, 21503, 35 closes https://github.com/official-stockfish/Stockfish/pull/5729 Bench: 1294909
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