Dev Builds » 20230101-1124

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 06:59:18 582206 3996 1188 856 1952 +28.93 ± 4.99 2 274 1116 602 4 +57.91 ± 10.08
ncm-dbt-02 06:58:15 586598 4000 1194 888 1918 +26.63 ± 5.05 1 295 1109 587 8 +52.33 ± 10.13
ncm-dbt-03 06:59:18 585286 4010 1176 918 1916 +22.38 ± 5.2 5 331 1076 587 6 +44.78 ± 10.34
ncm-dbt-04 06:59:08 569186 3994 1155 930 1909 +19.59 ± 5.21 6 342 1074 571 4 +39.66 ± 10.35
ncm-dbt-05 06:58:20 582419 4000 1197 892 1911 +26.54 ± 5.14 4 305 1078 608 5 +53.22 ± 10.32
20000 5910 4484 9606 +24.81 ± 2.29 18 1547 5453 2955 27 +49.57 ± 4.58

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
412612 ncm-dbt-03 585548 10 3 2 5 +34.85 ± 119.9 0 1 2 2 0 +70.44 ± 307.49 ↓
412611 ncm-dbt-04 570148 494 133 125 236 +5.63 ± 14.84 1 51 134 61 0 +12.67 ± 29.37 ↓
412610 ncm-dbt-01 582277 496 145 110 241 +24.56 ± 14.22 1 35 140 72 0 +50.79 ± 28.5 ↓
412609 ncm-dbt-02 585253 500 138 108 254 +20.87 ± 14.37 0 41 139 69 1 +40.48 ± 28.71 ↓
412608 ncm-dbt-05 578506 500 145 104 251 +28.56 ± 14.41 2 32 139 77 0 +60.36 ± 28.64 ↓
412607 ncm-dbt-03 585169 500 153 111 236 +29.25 ± 14.19 1 33 139 77 0 +60.36 ± 28.64 ↓
412606 ncm-dbt-04 567799 500 148 107 245 +28.55 ± 14.54 0 38 134 77 1 +56.07 ± 29.34 ↓
412605 ncm-dbt-01 582987 500 148 101 251 +32.76 ± 14.43 0 36 131 83 0 +66.1 ± 29.72 ↓
412604 ncm-dbt-02 586350 500 151 105 244 +32.05 ± 13.71 0 30 145 74 1 +63.23 ± 27.78 ↓
412603 ncm-dbt-05 582527 500 140 123 237 +11.82 ± 15.9 1 56 119 73 1 +23.66 ± 31.27 ↓
412602 ncm-dbt-03 584832 500 140 113 247 +18.78 ± 14.73 0 45 134 70 1 +36.26 ± 29.38 ↓
412601 ncm-dbt-01 583950 500 154 103 243 +35.56 ± 13.95 1 27 143 78 1 +71.89 ± 28.0 ↓
412600 ncm-dbt-04 569350 500 146 126 228 +13.9 ± 14.47 0 47 136 67 0 +27.85 ± 29.13 ↓
412599 ncm-dbt-05 581693 500 154 114 232 +27.85 ± 15.37 0 44 124 80 2 +53.22 ± 30.66 ↓
412598 ncm-dbt-03 584916 500 145 113 242 +22.27 ± 14.6 0 43 132 75 0 +44.72 ± 29.63 ↓
412597 ncm-dbt-02 586054 500 136 117 247 +13.21 ± 14.8 0 48 137 63 2 +23.66 ± 29.01 ↓
412596 ncm-dbt-04 569909 500 139 114 247 +17.39 ± 14.23 2 37 145 66 0 +37.67 ± 27.91 ↓
412595 ncm-dbt-01 581777 500 157 100 243 +39.78 ± 14.61 0 33 128 88 1 +79.17 ± 30.09 ↓
412594 ncm-dbt-03 585000 500 160 132 208 +19.48 ± 13.73 0 38 146 66 0 +39.08 ± 27.76 ↓
412593 ncm-dbt-05 585928 500 139 111 250 +19.48 ± 14.78 0 45 133 71 1 +37.67 ± 29.51 ↓
412592 ncm-dbt-02 585169 500 159 111 230 +33.46 ± 14.48 0 35 133 81 1 +66.1 ± 29.44 ↓
412591 ncm-dbt-04 569230 500 156 122 222 +23.66 ± 14.96 1 41 132 75 1 +47.55 ± 29.63 ↓
412590 ncm-dbt-01 579992 500 152 113 235 +27.15 ± 13.22 0 29 154 66 1 +53.22 ± 26.54 ↓
412589 ncm-dbt-05 584453 500 159 104 237 +38.37 ± 13.86 0 29 137 84 0 +77.71 ± 28.83 ↓
412588 ncm-dbt-03 586308 500 150 107 243 +29.95 ± 14.76 0 40 127 83 0 +60.36 ± 30.26 ↓
412587 ncm-dbt-02 589710 500 153 116 231 +25.76 ± 14.21 0 37 140 72 1 +50.38 ± 28.55 ↓
412586 ncm-dbt-04 568593 500 141 113 246 +19.48 ± 15.15 0 49 124 77 0 +39.08 ± 30.66 ↓
412585 ncm-dbt-01 581277 500 139 113 248 +18.08 ± 13.62 0 38 148 64 0 +36.26 ± 27.5 ↓
412584 ncm-dbt-05 578712 500 148 108 244 +27.85 ± 14.09 0 35 141 73 1 +54.65 ± 28.39 ↓
412583 ncm-dbt-03 586731 500 153 125 222 +19.48 ± 15.15 3 37 142 65 3 +39.08 ± 28.31 ↓
412582 ncm-dbt-02 586477 500 142 104 254 +26.46 ± 13.72 1 31 147 71 0 +54.65 ± 27.55 ↓
412581 ncm-dbt-04 569071 500 156 108 236 +33.46 ± 13.81 1 27 146 75 1 +67.55 ± 27.6 ↓
412580 ncm-dbt-01 582444 500 146 112 242 +23.66 ± 14.58 0 42 132 76 0 +47.55 ± 29.63 ↓
412579 ncm-dbt-05 581985 500 157 114 229 +29.95 ± 14.5 1 35 134 80 0 +61.79 ± 29.32 ↓
412578 ncm-dbt-03 584159 500 132 115 253 +11.82 ± 15.31 0 54 126 69 1 +22.27 ± 30.41 ↓
412577 ncm-dbt-02 589112 500 152 119 229 +22.96 ± 14.66 0 42 134 73 1 +44.72 ± 29.37 ↓
412576 ncm-dbt-04 569390 500 136 115 249 +14.6 ± 15.64 1 52 123 73 1 +29.25 ± 30.78 ↓
412575 ncm-dbt-01 582945 500 147 104 249 +29.95 ± 14.11 0 34 140 75 1 +58.93 ± 28.51 ↓
412574 ncm-dbt-05 585548 500 155 114 231 +28.55 ± 13.18 0 29 151 70 0 +57.5 ± 26.95 ↓
412573 ncm-dbt-02 584664 500 163 108 229 +38.37 ± 14.26 0 31 134 84 1 +76.25 ± 29.26 ↓
412572 ncm-dbt-03 584916 500 140 100 260 +27.85 ± 15.12 1 40 128 80 1 +56.07 ± 30.14 ↓

Commit

Commit ID f09b391ceb5ea282538b721b069db67e3b6e098f
Author Sebastian Buchwald
Date 2023-01-01 11:24:42 UTC
Fix comparison with uninitialized variable In both modified methods, the variable 'result' is checked to detect whether the probe operation failed. However, the variable is not initialized on all paths, so the check might test an uninitialized value. A test position (with TB) is given by: position fen 3K1k2/R7/8/8/8/8/8/R6Q w - - 0 1 moves a1b1 f8g8 b1a1 g8f8 a1b1 f8g8 b1a1 This is now fixed by always initializing the variable. closes https://github.com/official-stockfish/Stockfish/pull/4309 No functional change
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