Dev Builds » 20221209-1559

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 06:59:13 583856 4000 1107 884 2009 +19.39 ± 5.19 4 346 1078 567 5 +38.72 ± 10.33
ncm-dbt-02 07:00:54 585972 4016 1168 941 1907 +19.66 ± 5.14 0 352 1081 571 4 +38.74 ± 10.32
ncm-dbt-03 07:00:45 583696 3984 1133 896 1955 +20.69 ± 5.15 6 326 1087 571 2 +42.24 ± 10.27
ncm-dbt-04 07:00:28 569129 4000 1138 892 1970 +21.39 ± 5.21 6 334 1072 584 4 +43.3 ± 10.36
ncm-dbt-05 07:00:24 578544 4000 1182 874 1944 +26.81 ± 5.2 6 306 1069 612 7 +53.76 ± 10.37
20000 5728 4487 9785 +21.59 ± 2.32 22 1664 5387 2905 22 +43.34 ± 4.62

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
431254 ncm-dbt-02 586520 16 5 3 8 +43.65 ± 104.65 0 2 2 4 0 +88.74 ± 261.91 ↓
431253 ncm-dbt-03 583279 484 156 104 224 +37.47 ± 14.44 0 31 128 83 0 +75.84 ± 30.0 ↓
431252 ncm-dbt-05 579992 500 141 111 248 +20.87 ± 14.76 0 45 130 75 0 +41.89 ± 29.89 ↓
431251 ncm-dbt-04 569310 500 156 110 234 +32.05 ± 14.52 0 37 130 83 0 +64.66 ± 29.86 ↓
431250 ncm-dbt-01 582318 500 138 117 245 +14.6 ± 15.16 0 51 128 70 1 +27.85 ± 30.16 ↓
431249 ncm-dbt-02 587155 500 145 116 239 +20.17 ± 14.58 0 42 139 67 2 +37.67 ± 28.72 ↓
431248 ncm-dbt-03 585169 500 133 115 252 +12.51 ± 14.74 3 41 141 65 0 +29.25 ± 28.47 ↓
431247 ncm-dbt-01 584243 500 135 112 253 +15.99 ± 14.64 1 44 136 69 0 +33.46 ± 29.13 ↓
431246 ncm-dbt-05 582402 500 143 117 240 +18.08 ± 14.67 1 43 135 71 0 +37.67 ± 29.25 ↓
431245 ncm-dbt-04 566809 500 138 120 242 +12.51 ± 14.87 0 51 130 69 0 +25.06 ± 29.91 ↓
431244 ncm-dbt-02 583028 500 151 114 235 +25.76 ± 13.94 0 36 141 73 0 +51.8 ± 28.4 ↓
431243 ncm-dbt-03 582277 500 151 105 244 +32.06 ± 14.77 1 36 129 84 0 +66.1 ± 29.99 ↓
431242 ncm-dbt-01 584034 500 143 111 246 +22.27 ± 14.21 0 40 138 72 0 +44.72 ± 28.84 ↓
431241 ncm-dbt-05 573649 500 146 108 246 +26.46 ± 15.03 0 44 124 82 0 +53.22 ± 30.66 ↓
431240 ncm-dbt-04 567839 500 141 100 259 +28.55 ± 13.74 0 32 146 71 1 +56.07 ± 27.68 ↓
431239 ncm-dbt-02 583740 500 143 124 233 +13.21 ± 15.05 0 51 130 68 1 +25.06 ± 29.91 ↓
431238 ncm-dbt-03 583698 500 144 98 258 +32.05 ± 14.25 0 35 134 81 0 +64.66 ± 29.31 ↓
431237 ncm-dbt-01 584076 500 137 122 241 +10.42 ± 14.44 0 48 140 61 1 +19.48 ± 28.62 ↓
431236 ncm-dbt-04 568752 500 146 117 237 +20.18 ± 15.33 1 47 124 78 0 +41.89 ± 30.66 ↓
431235 ncm-dbt-05 572719 500 141 97 262 +30.65 ± 14.94 3 31 136 79 1 +64.66 ± 29.04 ↓
431234 ncm-dbt-02 586181 500 153 119 228 +23.66 ± 14.45 0 41 134 75 0 +47.55 ± 29.36 ↓
431233 ncm-dbt-03 584832 500 135 120 245 +10.43 ± 14.57 1 46 141 61 1 +20.87 ± 28.49 ↓
431232 ncm-dbt-01 584748 500 150 107 243 +29.95 ± 14.63 1 36 132 81 0 +61.79 ± 29.59 ↓
431231 ncm-dbt-04 568633 500 134 121 245 +9.04 ± 15.81 3 50 130 65 2 +19.48 ± 29.91 ↓
431230 ncm-dbt-05 576169 500 151 116 233 +24.36 ± 15.13 1 41 132 74 2 +47.55 ± 29.63 ↓
431229 ncm-dbt-02 585126 500 134 108 258 +18.08 ± 15.17 0 50 124 76 0 +36.26 ± 30.66 ↓
431228 ncm-dbt-03 581028 500 144 119 237 +17.39 ± 14.75 0 47 131 72 0 +34.86 ± 29.77 ↓
431227 ncm-dbt-04 569071 500 143 105 252 +26.46 ± 14.13 1 34 141 74 0 +54.65 ± 28.39 ↓
431226 ncm-dbt-01 584453 500 129 96 275 +22.96 ± 14.53 1 38 139 71 1 +46.13 ± 28.7 ↓
431225 ncm-dbt-05 579909 500 147 118 235 +20.17 ± 13.78 1 34 151 63 1 +40.48 ± 27.06 ↓
431224 ncm-dbt-02 587282 500 154 120 226 +23.66 ± 15.08 0 45 127 77 1 +46.13 ± 30.28 ↓
431223 ncm-dbt-01 583572 500 138 118 244 +13.9 ± 14.98 0 50 131 68 1 +26.46 ± 29.78 ↓
431222 ncm-dbt-04 570549 500 137 107 256 +20.87 ± 14.88 1 42 134 72 1 +41.89 ± 29.37 ↓
431221 ncm-dbt-03 584285 500 134 116 250 +12.51 ± 14.49 1 44 142 62 1 +25.06 ± 28.35 ↓
431220 ncm-dbt-05 582193 500 148 109 243 +27.15 ± 14.57 0 39 134 76 1 +53.22 ± 29.35 ↓
431219 ncm-dbt-02 590396 500 140 125 235 +10.43 ± 14.05 0 46 143 61 0 +20.87 ± 28.22 ↓
431218 ncm-dbt-01 583405 500 137 101 262 +25.06 ± 14.81 1 39 134 75 1 +50.38 ± 29.35 ↓
431217 ncm-dbt-04 572074 500 143 112 245 +21.57 ± 14.29 0 41 137 72 0 +43.3 ± 28.97 ↓
431216 ncm-dbt-05 581319 500 165 98 237 +46.84 ± 14.62 0 29 127 92 2 +92.46 ± 30.18 ↓
431215 ncm-dbt-03 585000 500 136 119 245 +11.82 ± 14.17 0 46 141 63 0 +23.66 ± 28.48 ↓
431214 ncm-dbt-02 584327 500 143 112 245 +21.57 ± 14.03 0 39 141 70 0 +43.3 ± 28.43 ↓

Commit

Commit ID 9d3fd011f1bc9ef6f3a3091aae10634b31e0032c
Author Alfredo Menezes
Date 2022-12-09 15:59:55 UTC
Extend all moves at low depth if ttMove is doubly extended If ttMove is doubly extended, we allow a depth growth of the remaining moves. The idea is to get a more realistic score comparison, because of the depth difference. We take some care to avoid this extension for high depths, in order to avoid the cost, since the search result is supposed to be more accurate in this case. This pull request includes some small cleanups. STC: LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 60256 W: 16189 L: 15848 D: 28219 Ptnml(0-2): 182, 6546, 16330, 6889, 181 https://tests.stockfishchess.org/tests/view/639109a1792a529ae8f27777 LTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 106232 W: 28487 L: 28053 D: 49692 Ptnml(0-2): 46, 10224, 32145, 10652, 49 https://tests.stockfishchess.org/tests/view/63914cba792a529ae8f282ee closes https://github.com/official-stockfish/Stockfish/pull/4271 Bench: 3622368
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