Dev Builds » 20221016-1058

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 06:51:25 583229 4006 1133 938 1935 +16.93 ± 5.25 4 369 1064 560 6 +33.58 ± 10.41
ncm-dbt-02 06:52:14 585115 4000 1118 904 1978 +18.61 ± 5.15 5 339 1099 551 6 +37.14 ± 10.21
ncm-dbt-03 06:52:38 585580 4010 1110 940 1960 +14.74 ± 5.23 4 376 1078 540 7 +29.01 ± 10.34
ncm-dbt-04 06:51:38 569198 4000 1104 937 1959 +14.51 ± 5.11 3 359 1111 522 5 +28.73 ± 10.15
ncm-dbt-05 06:51:33 584240 3984 1168 888 1928 +24.46 ± 5.2 2 326 1060 598 6 +48.45 ± 10.42
20000 5633 4607 9760 +17.84 ± 2.32 18 1769 5412 2771 30 +35.35 ± 4.61

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
413952 ncm-dbt-01 581610 6 1 3 2 -120.22 ± 109.7 0 2 1 0 0 -279.24 ± 576.89 ↓
413951 ncm-dbt-03 585295 10 4 3 3 +34.8 ± 62.53 0 0 4 1 0 +70.35 ± 134.03 ↓
413950 ncm-dbt-05 584706 484 159 99 226 +43.29 ± 15.74 0 36 112 92 2 +84.92 ± 32.28 ↓
413949 ncm-dbt-02 580655 500 148 112 240 +25.06 ± 14.16 0 37 141 71 1 +48.96 ± 28.41 ↓
413948 ncm-dbt-04 568951 500 147 118 235 +20.18 ± 15.08 1 45 128 76 0 +41.89 ± 30.15 ↓
413947 ncm-dbt-01 579207 500 143 111 246 +22.27 ± 14.73 0 44 130 76 0 +44.72 ± 29.89 ↓
413946 ncm-dbt-03 585337 500 126 117 257 +6.25 ± 14.85 1 51 137 60 1 +12.51 ± 29.02 ↓
413945 ncm-dbt-05 585759 500 163 110 227 +36.97 ± 14.96 0 36 127 85 2 +71.89 ± 30.24 ↓
413944 ncm-dbt-02 585590 500 138 118 244 +13.9 ± 15.35 0 53 125 71 1 +26.46 ± 30.53 ↓
413943 ncm-dbt-01 584453 500 139 106 255 +22.96 ± 14.0 0 37 144 68 1 +44.72 ± 28.02 ↓
413942 ncm-dbt-04 567839 500 144 111 245 +22.97 ± 14.4 2 35 141 72 0 +48.96 ± 28.41 ↓
413941 ncm-dbt-03 588217 500 144 119 237 +17.38 ± 14.87 0 47 132 70 1 +33.46 ± 29.64 ↓
413940 ncm-dbt-05 582110 500 146 118 236 +19.48 ± 14.65 1 41 138 69 1 +39.08 ± 28.85 ↓
413939 ncm-dbt-02 588345 500 135 130 235 +3.48 ± 14.99 1 55 132 62 0 +8.34 ± 29.66 ↓
413938 ncm-dbt-04 568951 500 138 111 251 +18.78 ± 13.81 0 38 148 63 1 +36.26 ± 27.5 ↓
413937 ncm-dbt-01 582861 500 143 125 232 +12.51 ± 15.6 1 52 127 68 2 +23.66 ± 30.28 ↓
413936 ncm-dbt-03 583196 500 145 116 239 +20.17 ± 14.58 0 43 136 70 1 +39.08 ± 29.11 ↓
413935 ncm-dbt-05 584748 500 149 123 228 +18.08 ± 14.29 0 43 138 69 0 +36.26 ± 28.86 ↓
413934 ncm-dbt-02 582027 500 155 108 237 +32.76 ± 14.03 0 33 137 80 0 +66.1 ± 28.89 ↓
413933 ncm-dbt-04 568474 500 142 132 226 +6.95 ± 14.4 0 51 138 61 0 +13.9 ± 28.89 ↓
413932 ncm-dbt-01 583112 500 148 123 229 +17.38 ± 14.49 0 44 138 67 1 +33.46 ± 28.86 ↓
413931 ncm-dbt-03 585169 500 140 133 227 +4.86 ± 15.83 0 63 118 68 1 +8.34 ± 31.38 ↓
413930 ncm-dbt-05 584159 500 139 107 254 +22.27 ± 14.6 1 40 135 74 0 +46.13 ± 29.23 ↓
413929 ncm-dbt-02 586731 500 129 109 262 +13.9 ± 14.85 1 43 145 57 4 +23.66 ± 27.95 ↓
413928 ncm-dbt-01 585759 500 142 127 231 +10.43 ± 15.44 1 53 127 68 1 +20.87 ± 30.28 ↓
413927 ncm-dbt-04 571833 500 146 115 239 +21.57 ± 15.31 0 47 127 74 2 +40.48 ± 30.28 ↓
413926 ncm-dbt-03 585337 500 135 116 249 +13.21 ± 14.41 1 44 140 65 0 +27.85 ± 28.61 ↓
413925 ncm-dbt-05 583698 500 137 112 251 +17.39 ± 14.23 0 43 139 68 0 +34.86 ± 28.73 ↓
413924 ncm-dbt-02 585464 500 147 114 239 +22.97 ± 13.59 1 32 150 67 0 +47.55 ± 27.16 ↓
413923 ncm-dbt-01 585379 500 128 105 267 +15.99 ± 15.02 0 50 127 73 0 +32.05 ± 30.28 ↓
413922 ncm-dbt-04 570068 500 120 110 270 +6.95 ± 14.14 0 49 142 59 0 +13.9 ± 28.36 ↓
413921 ncm-dbt-03 583698 500 141 127 232 +9.73 ± 14.77 1 49 135 65 0 +20.87 ± 29.27 ↓
413920 ncm-dbt-05 583112 500 129 109 262 +13.9 ± 13.81 0 41 149 59 1 +26.46 ± 27.39 ↓
413919 ncm-dbt-02 586393 500 125 112 263 +9.04 ± 14.58 2 45 141 62 0 +20.87 ± 28.49 ↓
413918 ncm-dbt-01 583992 500 147 122 231 +17.39 ± 15.37 0 52 121 77 0 +34.86 ± 31.03 ↓
413917 ncm-dbt-04 569829 500 128 119 253 +6.25 ± 14.34 0 50 142 57 1 +11.12 ± 28.37 ↓
413916 ncm-dbt-03 587240 500 136 95 269 +28.55 ± 14.41 0 37 136 76 1 +56.07 ± 29.07 ↓
413915 ncm-dbt-05 585632 500 146 110 244 +25.06 ± 15.18 0 46 122 82 0 +50.38 ± 30.91 ↓
413914 ncm-dbt-01 582694 500 142 116 242 +18.08 ± 14.15 2 35 149 63 1 +37.67 ± 27.35 ↓
413913 ncm-dbt-02 585717 500 141 101 258 +27.85 ± 14.75 0 41 128 81 0 +56.07 ± 30.14 ↓
413912 ncm-dbt-03 586731 500 139 114 247 +17.39 ± 14.75 1 42 140 65 2 +33.46 ± 28.6 ↓
413911 ncm-dbt-04 567640 500 139 121 240 +12.51 ± 14.09 0 44 145 60 1 +23.66 ± 27.95 ↓

Commit

Commit ID 79c5f3a69247b44ee6362a3d9236cd9bc048c5f5
Author Rodrigo Roim
Date 2022-10-16 10:58:48 UTC
Fix tablebase probe for dtz >1000 w/o 50 move rule For qn4N1/6R1/3K4/8/B2k4/8/8/8 w - - 0 1, white loses with DTZ 1034. See https://syzygy-tables.info/?fen=qn4N1/6R1/3K4/8/B2k4/8/8/8_w_-_-_0_1 Prior to this fix, due to a too small hard-coded value, Stockfish interpreted this as winning. The new value picked (1<<18) is large enough to deal with the largest DTZ values that can be stored in the current syzygy format. closes https://github.com/official-stockfish/Stockfish/pull/4187 No functional change.
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