Dev Builds » 20240701-1758

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 06:52:56 584484 3980 1491 552 1937 +83.54 ± 5.01 2 121 811 1048 8 +176.7 ± 11.95
ncm-dbt-02 06:51:03 587487 4000 1523 570 1907 +84.4 ± 4.82 1 96 860 1035 8 +178.56 ± 11.55
ncm-dbt-03 06:51:38 587671 4000 1496 617 1887 +77.61 ± 5.12 2 138 859 981 20 +160.0 ± 11.61
ncm-dbt-04 06:52:04 569767 4020 1545 602 1873 +83.05 ± 4.94 2 113 845 1040 10 +175.07 ± 11.69
ncm-dbt-05 06:52:38 582659 4000 1475 609 1916 +76.43 ± 5.02 1 131 884 969 15 +158.08 ± 11.42
20000 7530 2950 9520 +81.0 ± 2.23 8 599 4259 5073 61 +169.58 ± 5.2

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
390750 ncm-dbt-04 569749 20 10 4 6 +107.48 ± 58.78 0 0 4 6 0 +240.74 ± 206.09 ↓
390749 ncm-dbt-01 581777 480 183 69 228 +84.12 ± 14.88 1 14 97 126 2 +177.59 ± 34.74 ↓
390748 ncm-dbt-05 585717 500 182 77 241 +74.06 ± 15.42 0 23 104 118 5 +147.19 ± 33.54 ↓
390747 ncm-dbt-03 587197 500 192 79 229 +79.9 ± 13.77 0 14 110 125 1 +167.53 ± 32.45 ↓
390746 ncm-dbt-02 587155 500 196 70 234 +89.48 ± 13.84 0 12 102 134 2 +189.0 ± 33.78 ↓
390745 ncm-dbt-04 571712 500 195 76 229 +84.3 ± 13.88 0 13 107 128 2 +176.33 ± 32.93 ↓
390744 ncm-dbt-01 582819 500 190 68 242 +86.52 ± 14.53 0 17 96 135 2 +181.7 ± 34.95 ↓
390743 ncm-dbt-05 585253 500 177 85 238 +64.66 ± 14.26 0 22 114 114 0 +134.15 ± 31.97 ↓
390742 ncm-dbt-03 587749 500 200 76 224 +88.0 ± 14.12 0 13 103 131 3 +183.51 ± 33.63 ↓
390741 ncm-dbt-02 588771 500 192 75 233 +82.83 ± 13.39 0 12 109 129 0 +176.33 ± 32.55 ↓
390740 ncm-dbt-04 569829 500 190 76 234 +80.63 ± 13.79 1 11 112 125 1 +171.02 ± 32.04 ↓
390739 ncm-dbt-01 585548 500 175 70 255 +74.06 ± 14.03 0 18 109 123 0 +155.54 ± 32.7 ↓
390738 ncm-dbt-02 587834 500 206 65 229 +100.7 ± 13.2 0 7 97 144 2 +217.85 ± 34.53 ↓
390737 ncm-dbt-05 579166 500 185 79 236 +74.79 ± 14.2 0 18 109 122 1 +155.54 ± 32.7 ↓
390736 ncm-dbt-03 587494 500 193 71 236 +86.52 ± 14.67 0 16 100 130 4 +178.11 ± 34.22 ↓
390735 ncm-dbt-04 565744 500 179 74 247 +74.06 ± 14.03 1 15 112 122 0 +157.24 ± 32.18 ↓
390734 ncm-dbt-01 587409 500 173 72 255 +71.16 ± 14.5 1 18 111 119 1 +148.85 ± 32.4 ↓
390733 ncm-dbt-02 586477 500 191 69 240 +86.52 ± 14.23 1 13 100 135 1 +185.33 ± 34.19 ↓
390732 ncm-dbt-04 569430 500 198 73 229 +88.74 ± 14.13 0 16 93 141 0 +190.85 ± 35.52 ↓
390731 ncm-dbt-05 582068 500 182 76 242 +74.79 ± 14.06 0 16 114 118 2 +153.86 ± 31.85 ↓
390730 ncm-dbt-03 586901 500 182 79 239 +72.61 ± 15.5 0 25 101 120 4 +145.54 ± 34.01 ↓
390729 ncm-dbt-01 584958 500 197 64 239 +94.69 ± 13.62 0 11 96 142 1 +204.07 ± 34.89 ↓
390728 ncm-dbt-02 588430 500 176 64 260 +79.17 ± 13.45 0 13 112 125 0 +167.53 ± 32.08 ↓
390727 ncm-dbt-03 588643 500 174 65 261 +76.97 ± 14.13 0 16 111 121 2 +158.93 ± 32.34 ↓
390726 ncm-dbt-05 587113 500 185 74 241 +78.44 ± 13.58 0 14 111 125 0 +165.8 ± 32.28 ↓
390725 ncm-dbt-04 568434 500 192 65 243 +90.22 ± 14.01 0 13 99 136 2 +190.85 ± 34.36 ↓
390724 ncm-dbt-01 584369 500 181 65 254 +82.1 ± 14.27 0 17 101 131 1 +172.78 ± 34.05 ↓
390723 ncm-dbt-05 579744 500 187 71 242 +82.1 ± 14.13 0 14 109 124 3 +169.27 ± 32.62 ↓
390722 ncm-dbt-02 587325 500 179 76 245 +72.61 ± 13.99 0 17 114 118 1 +150.51 ± 31.88 ↓
390721 ncm-dbt-04 567482 500 193 67 240 +89.48 ± 13.22 0 10 104 136 0 +192.71 ± 33.34 ↓
390720 ncm-dbt-03 586435 500 195 79 226 +82.1 ± 13.83 0 13 110 125 2 +171.02 ± 32.42 ↓
390719 ncm-dbt-04 571672 500 194 85 221 +76.97 ± 14.27 0 18 106 125 1 +160.64 ± 33.2 ↓
390718 ncm-dbt-01 583154 500 193 71 236 +86.52 ± 14.53 0 18 93 138 1 +183.51 ± 35.5 ↓
390717 ncm-dbt-02 584411 500 192 72 236 +85.04 ± 13.28 0 10 111 128 1 +179.9 ± 32.11 ↓
390716 ncm-dbt-05 578013 500 188 80 232 +76.25 ± 13.66 0 14 115 120 1 +158.93 ± 31.63 ↓
390715 ncm-dbt-03 586731 500 174 83 243 +63.95 ± 15.3 2 22 111 113 2 +132.54 ± 32.44 ↓
390714 ncm-dbt-04 573851 500 194 82 224 +79.17 ± 14.62 0 17 108 121 4 +160.64 ± 32.85 ↓
390713 ncm-dbt-01 585843 500 199 73 228 +89.48 ± 12.89 0 8 108 134 0 +192.71 ± 32.52 ↓
390712 ncm-dbt-02 589497 500 191 79 230 +79.17 ± 13.45 0 12 115 122 1 +165.8 ± 31.55 ↓
390711 ncm-dbt-05 584201 500 189 67 244 +86.52 ± 14.08 1 10 108 128 3 +181.7 ± 32.68 ↓
390710 ncm-dbt-03 590224 500 186 85 229 +71.16 ± 14.36 0 19 113 116 2 +145.54 ± 32.08 ↓

Commit

Commit ID 38c5fc33e493f210dc199dab7c105e84e7601b99
Author Shahin M. Shahin
Date 2024-07-01 17:58:13 UTC
Increase reduction based on correct expectation If the current node is not a cutNode then it means that the child is one in LMR and the cutoff count is expected, so more reduction when the cutoffs are expected Passed STC: https://tests.stockfishchess.org/tests/view/66815e791c5b344a34ca7090 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 64416 W: 16876 L: 16519 D: 31021 Ptnml(0-2): 150, 7670, 16264, 7921, 203 Passed LTC: https://tests.stockfishchess.org/tests/view/668162f61c5b344a34ca725c LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 78186 W: 19905 L: 19499 D: 38782 Ptnml(0-2): 55, 8561, 21437, 9003, 37 closes https://github.com/official-stockfish/Stockfish/pull/5422 bench: 1161531
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