Dev Builds » 20220806-1150

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 06:53:56 583600 3996 1125 963 1908 +14.09 ± 5.2 3 376 1079 536 4 +28.06 ± 10.33
ncm-dbt-02 06:53:05 585591 4000 1094 953 1953 +12.25 ± 5.21 7 376 1091 521 5 +24.88 ± 10.26
ncm-dbt-03 06:54:10 584890 4006 1101 895 2010 +17.88 ± 5.19 2 359 1079 557 6 +35.16 ± 10.33
ncm-dbt-04 06:53:23 569186 4000 1108 936 1956 +14.95 ± 5.21 5 367 1084 539 5 +29.95 ± 10.3
ncm-dbt-05 06:53:30 582689 3998 1095 956 1947 +12.08 ± 5.22 3 392 1070 531 3 +24.2 ± 10.38
20000 5523 4703 9774 +14.25 ± 2.33 20 1870 5403 2684 23 +28.45 ± 4.61

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
432294 ncm-dbt-03 585337 6 3 1 2 +120.22 ± 109.7 0 0 1 2 0 +279.24 ± 576.89 ↓
432293 ncm-dbt-05 583321 498 160 127 211 +23.06 ± 14.06 0 38 140 71 0 +46.32 ± 28.54 ↓
432292 ncm-dbt-01 583614 496 133 124 239 +6.3 ± 14.72 0 53 133 62 0 +12.61 ± 29.51 ↓
432291 ncm-dbt-02 585590 500 128 118 254 +6.95 ± 15.28 1 55 127 67 0 +15.3 ± 30.28 ↓
432290 ncm-dbt-04 568275 500 138 130 232 +5.56 ± 14.02 1 45 150 53 1 +11.12 ± 27.29 ↓
432289 ncm-dbt-03 579331 500 127 104 269 +15.99 ± 14.12 0 43 141 66 0 +32.05 ± 28.47 ↓
432288 ncm-dbt-05 582110 500 132 124 244 +5.56 ± 14.79 1 51 138 59 1 +11.12 ± 28.89 ↓
432287 ncm-dbt-02 584369 500 139 125 236 +9.73 ± 15.14 1 50 135 62 2 +18.08 ± 29.27 ↓
432286 ncm-dbt-01 583237 500 142 119 239 +15.99 ± 15.26 0 50 129 69 2 +29.25 ± 30.03 ↓
432285 ncm-dbt-04 566060 500 142 106 252 +25.06 ± 14.68 0 40 136 72 2 +47.55 ± 29.1 ↓
432284 ncm-dbt-03 585169 500 137 108 255 +20.17 ± 14.96 1 42 136 69 2 +39.08 ± 29.11 ↓
432283 ncm-dbt-05 581153 500 119 116 265 +2.08 ± 14.23 0 53 141 56 0 +4.17 ± 28.5 ↓
432282 ncm-dbt-02 586393 500 136 128 236 +5.56 ± 14.02 0 48 147 54 1 +9.73 ± 27.7 ↓
432281 ncm-dbt-01 584076 500 150 118 232 +22.27 ± 13.95 0 38 142 70 0 +44.72 ± 28.29 ↓
432280 ncm-dbt-04 570869 500 148 120 232 +19.48 ± 15.64 2 46 125 76 1 +40.48 ± 30.53 ↓
432279 ncm-dbt-03 584874 500 143 115 242 +19.48 ± 15.28 0 48 128 72 2 +36.26 ± 30.15 ↓
432278 ncm-dbt-05 579496 500 133 116 251 +11.82 ± 15.06 0 52 130 67 1 +22.27 ± 29.91 ↓
432277 ncm-dbt-02 586139 500 140 120 240 +13.91 ± 14.73 2 43 138 67 0 +30.65 ± 28.87 ↓
432276 ncm-dbt-01 583447 500 145 112 243 +22.96 ± 14.91 0 44 130 75 1 +44.72 ± 29.89 ↓
432275 ncm-dbt-04 568792 500 141 112 247 +20.17 ± 14.7 0 45 131 74 0 +40.48 ± 29.77 ↓
432274 ncm-dbt-03 585759 500 145 113 242 +22.26 ± 14.86 0 44 131 74 1 +43.3 ± 29.76 ↓
432273 ncm-dbt-05 584874 500 140 124 236 +11.12 ± 14.37 0 48 138 64 0 +22.27 ± 28.88 ↓
432272 ncm-dbt-02 585464 500 145 123 232 +15.3 ± 14.84 1 45 136 67 1 +30.65 ± 29.13 ↓
432271 ncm-dbt-04 570068 500 135 115 250 +13.9 ± 15.1 1 48 132 68 1 +27.85 ± 29.65 ↓
432270 ncm-dbt-01 583824 500 142 122 236 +13.9 ± 14.47 0 46 139 64 1 +26.46 ± 28.74 ↓
432269 ncm-dbt-03 585084 500 132 111 257 +14.6 ± 14.0 0 43 143 64 0 +29.25 ± 28.2 ↓
432268 ncm-dbt-05 585632 500 137 118 245 +13.21 ± 15.29 0 54 123 73 0 +26.46 ± 30.78 ↓
432267 ncm-dbt-01 584874 500 146 116 238 +20.87 ± 14.37 0 42 136 72 0 +41.89 ± 29.11 ↓
432266 ncm-dbt-02 584327 500 129 107 264 +15.3 ± 14.71 0 47 135 67 1 +29.25 ± 29.26 ↓
432265 ncm-dbt-04 567680 500 123 122 255 +0.7 ± 14.61 1 54 138 57 0 +2.78 ± 28.89 ↓
432264 ncm-dbt-03 585295 500 133 99 268 +23.66 ± 14.32 0 40 136 74 0 +47.55 ± 29.1 ↓
432263 ncm-dbt-05 582987 500 137 119 244 +12.51 ± 15.36 2 48 131 68 1 +26.46 ± 29.78 ↓
432262 ncm-dbt-01 584243 500 127 124 249 +2.09 ± 14.99 1 56 132 61 0 +5.56 ± 29.66 ↓
432261 ncm-dbt-02 586435 500 136 114 250 +15.3 ± 14.84 1 46 133 70 0 +32.05 ± 29.52 ↓
432260 ncm-dbt-04 572800 500 131 113 256 +12.51 ± 14.61 0 49 134 67 0 +25.06 ± 29.4 ↓
432259 ncm-dbt-03 586816 500 140 115 245 +17.39 ± 15.0 0 49 127 74 0 +34.86 ± 30.28 ↓
432258 ncm-dbt-05 581943 500 137 112 251 +17.39 ± 14.87 0 48 129 73 0 +34.86 ± 30.03 ↓
432257 ncm-dbt-01 581485 500 140 128 232 +8.34 ± 14.78 2 47 138 63 0 +19.48 ± 28.88 ↓
432256 ncm-dbt-02 586012 500 141 118 241 +15.99 ± 14.38 1 42 140 67 0 +33.46 ± 28.6 ↓
432255 ncm-dbt-04 568951 500 150 118 232 +22.27 ± 14.21 0 40 138 72 0 +44.72 ± 28.84 ↓
432254 ncm-dbt-03 586350 500 141 129 230 +8.34 ± 14.9 1 50 136 62 1 +16.69 ± 29.14 ↓

Commit

Commit ID 675f6a038ba98b6b906a4767f009cf6fe91b0c52
Author Stefan Geschwentner
Date 2022-08-06 11:50:01 UTC
Tweak history updates In general the history update bonus is slightly decreased by 11% which gives a slower saturation speed. In addition only for main history the divisor is halfed (used history values are doubled to maintain same maximum) which have an effect in the opposite direction on saturation speed. STC: LLR: 2.95 (-2.94,2.94) <0.00,2.50> Total: 157088 W: 42673 L: 42168 D: 72247 Ptnml(0-2): 857, 17346, 41642, 17833, 866 https://tests.stockfishchess.org/tests/view/62e5517ab383a712b13867c5 LTC: LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 325592 W: 88705 L: 87753 D: 149134 Ptnml(0-2): 594, 32288, 96076, 33248, 590 https://tests.stockfishchess.org/tests/view/62e5e4f4b383a712b1387d53 closes https://github.com/official-stockfish/Stockfish/pull/4119 Bench: 5518728
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