Dev Builds » 20240509-0702

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 06:50:56 584478 4010 1516 607 1887 +80.15 ± 5.02 3 126 845 1021 10 +168.35 ± 11.7
ncm-dbt-02 06:48:23 588273 4000 1499 568 1933 +82.38 ± 4.99 1 114 857 1009 19 +171.24 ± 11.6
ncm-dbt-03 06:50:14 587099 4000 1498 596 1906 +79.72 ± 5.0 4 113 876 991 16 +166.23 ± 11.46
ncm-dbt-04 06:49:54 571751 4006 1442 596 1968 +74.49 ± 4.95 1 129 907 955 11 +154.44 ± 11.26
ncm-dbt-05 06:51:10 582366 3984 1436 577 1971 +76.11 ± 5.0 5 117 896 962 12 +158.81 ± 11.32
20000 7391 2944 9665 +78.56 ± 2.23 14 599 4381 4938 68 +163.77 ± 5.13

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
383790 ncm-dbt-04 570308 6 3 1 2 +120.22 ± 109.7 0 0 1 2 0 +279.24 ± 576.89 ↓
383789 ncm-dbt-01 585759 10 5 2 3 +107.43 ± 84.35 0 0 2 3 0 +240.65 ± 570.11 ↓
383788 ncm-dbt-05 579083 484 170 85 229 +61.66 ± 14.75 2 18 115 107 0 +130.75 ± 31.74 ↓
383787 ncm-dbt-03 586223 500 196 86 218 +77.7 ± 13.56 0 12 118 118 2 +160.64 ± 31.07 ↓
383786 ncm-dbt-02 586901 500 184 61 255 +87.26 ± 13.8 0 13 102 134 1 +185.33 ± 33.81 ↓
383785 ncm-dbt-01 584201 500 188 79 233 +76.98 ± 14.55 1 17 105 126 1 +162.35 ± 33.37 ↓
383784 ncm-dbt-04 572800 500 182 83 235 +69.71 ± 14.86 0 24 104 121 1 +143.89 ± 33.53 ↓
383783 ncm-dbt-05 581693 500 187 74 239 +79.9 ± 13.77 0 13 113 122 2 +165.8 ± 31.92 ↓
383782 ncm-dbt-03 586604 500 185 70 245 +81.37 ± 12.88 0 9 117 124 0 +172.78 ± 31.06 ↓
383781 ncm-dbt-04 570749 500 175 74 251 +71.16 ± 13.79 0 17 115 118 0 +148.85 ± 31.72 ↓
383780 ncm-dbt-02 588899 500 194 72 234 +86.52 ± 14.67 1 14 100 132 3 +181.7 ± 34.21 ↓
383779 ncm-dbt-01 585211 500 202 70 228 +93.95 ± 14.07 0 12 97 138 3 +198.34 ± 34.72 ↓
383778 ncm-dbt-05 584201 500 181 62 257 +84.31 ± 13.73 1 9 112 126 2 +178.11 ± 31.94 ↓
383777 ncm-dbt-03 588174 500 195 77 228 +83.57 ± 14.01 0 12 112 122 4 +171.02 ± 32.04 ↓
383776 ncm-dbt-04 572356 500 179 66 255 +79.9 ± 13.0 1 7 120 122 0 +171.02 ± 30.5 ↓
383775 ncm-dbt-02 587877 500 184 68 248 +82.1 ± 14.13 0 14 109 124 3 +169.27 ± 32.62 ↓
383774 ncm-dbt-01 581985 500 181 69 250 +79.17 ± 14.19 1 14 108 126 1 +167.53 ± 32.81 ↓
383773 ncm-dbt-05 582360 500 179 70 251 +76.97 ± 13.68 0 11 123 112 4 +155.54 ± 30.23 ↓
383772 ncm-dbt-04 572276 500 175 76 249 +69.71 ± 14.17 0 17 120 110 3 +140.62 ± 30.95 ↓
383771 ncm-dbt-03 588345 500 181 76 243 +74.06 ± 14.6 2 16 107 125 0 +158.93 ± 33.03 ↓
383770 ncm-dbt-02 588472 500 178 67 255 +78.43 ± 14.88 0 22 96 131 1 +164.07 ± 34.9 ↓
383769 ncm-dbt-01 584369 500 188 71 241 +82.83 ± 13.7 0 13 108 128 1 +174.55 ± 32.75 ↓
383768 ncm-dbt-05 580904 500 179 76 245 +72.61 ± 14.97 1 22 100 127 0 +153.86 ± 34.2 ↓
383767 ncm-dbt-04 568912 500 173 84 243 +62.51 ± 13.88 0 20 121 109 0 +129.35 ± 30.88 ↓
383766 ncm-dbt-03 584453 500 170 67 263 +72.61 ± 13.84 0 17 113 120 0 +152.18 ± 32.04 ↓
383765 ncm-dbt-02 585759 500 189 70 241 +84.3 ± 13.73 0 10 115 121 4 +172.78 ± 31.44 ↓
383764 ncm-dbt-01 584411 500 184 83 233 +71.16 ± 14.36 1 18 110 121 0 +150.51 ± 32.56 ↓
383763 ncm-dbt-05 581735 500 182 73 245 +76.98 ± 14.55 1 16 108 123 2 +160.64 ± 32.85 ↓
383762 ncm-dbt-04 571712 500 183 75 242 +76.25 ± 13.81 0 16 110 124 0 +160.64 ± 32.5 ↓
383761 ncm-dbt-03 587579 500 186 69 245 +82.83 ± 14.72 2 13 103 130 2 +176.33 ± 33.67 ↓
383760 ncm-dbt-02 589454 500 199 83 218 +82.1 ± 15.12 0 21 95 131 3 +169.27 ± 35.09 ↓
383759 ncm-dbt-01 584537 500 198 86 216 +79.17 ± 14.76 0 21 97 131 1 +165.8 ± 34.73 ↓
383758 ncm-dbt-05 583531 500 191 60 249 +93.2 ± 13.91 0 14 91 145 0 +202.15 ± 35.92 ↓
383757 ncm-dbt-04 573123 500 182 65 253 +82.83 ± 14.14 0 13 111 122 4 +169.27 ± 32.25 ↓
383756 ncm-dbt-02 589497 500 186 67 247 +84.3 ± 13.11 0 8 117 123 2 +176.33 ± 30.99 ↓
383755 ncm-dbt-01 581277 500 186 74 240 +79.17 ± 14.48 0 19 101 129 1 +165.8 ± 34.05 ↓
383754 ncm-dbt-03 587113 500 191 81 228 +77.7 ± 14.44 0 17 109 121 3 +158.93 ± 32.69 ↓
383753 ncm-dbt-02 589326 500 185 80 235 +74.06 ± 13.44 0 12 123 113 2 +152.18 ± 30.28 ↓
383752 ncm-dbt-04 573527 500 190 72 238 +83.57 ± 14.31 0 15 105 127 3 +172.78 ± 33.32 ↓
383751 ncm-dbt-05 585421 500 167 77 256 +63.23 ± 13.33 0 14 134 100 2 +127.76 ± 28.76 ↓
383750 ncm-dbt-01 588558 500 184 73 243 +78.43 ± 13.58 0 12 117 119 2 +162.35 ± 31.23 ↓
383749 ncm-dbt-03 588302 500 194 70 236 +88.0 ± 14.99 0 17 97 131 5 +179.9 ± 34.76 ↓

Commit

Commit ID c43425b0b1167665b2f9520690e639c80977c067
Author Shawn Xu
Date 2024-05-09 07:02:57 UTC
Simplify Away Negative Extension This patch simplifies away the negative extension applied when the value returned by the transposition table is assumed to fail low over the value of reduced search. Passed STC: LLR: 2.99 (-2.94,2.94) <-1.75,0.25> Total: 248736 W: 64293 L: 64302 D: 120141 Ptnml(0-2): 925, 29833, 62831, 29884, 895 https://tests.stockfishchess.org/tests/view/663bee3bca93dad645f7f64a Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 254970 W: 64289 L: 64308 D: 126373 Ptnml(0-2): 110, 28428, 70422, 28421, 104 https://tests.stockfishchess.org/tests/view/663c11f0c0b75d7f7b97d4bb closes https://github.com/official-stockfish/Stockfish/pull/5226 Bench: 2353057
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