Dev Builds » 20230227-2103

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 06:58:06 584907 4000 1250 817 1933 +37.76 ± 5.04 4 239 1084 666 7 +75.88 ± 10.25
ncm-dbt-02 06:59:16 584896 4006 1217 761 2028 +39.72 ± 5.12 6 245 1041 709 2 +81.24 ± 10.51
ncm-dbt-03 06:56:59 586134 4000 1214 867 1919 +30.22 ± 5.22 8 293 1045 652 2 +61.97 ± 10.5
ncm-dbt-04 06:59:06 570699 3994 1208 809 1977 +34.82 ± 5.2 7 270 1043 671 6 +70.55 ± 10.51
ncm-dbt-05 06:58:48 584132 4000 1256 814 1930 +38.55 ± 5.08 2 254 1047 694 3 +77.89 ± 10.47
20000 6145 4068 9787 +36.21 ± 2.3 27 1301 5260 3392 20 +73.48 ± 4.67

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
394634 ncm-dbt-02 588686 6 2 2 2 -0.0 ± 173.92 0 1 1 1 0 -0.0 ± 561.2 ↓
394632 ncm-dbt-04 571511 494 153 115 226 +26.78 ± 14.16 1 33 140 73 0 +55.32 ± 28.46 ↓
394631 ncm-dbt-05 582360 500 160 104 236 +39.08 ± 14.04 0 29 137 83 1 +77.71 ± 28.83 ↓
394630 ncm-dbt-01 584243 500 166 106 228 +41.89 ± 14.21 0 30 130 90 0 +85.04 ± 29.79 ↓
394629 ncm-dbt-02 585084 500 145 94 261 +35.56 ± 14.08 1 29 138 82 0 +73.34 ± 28.71 ↓
394628 ncm-dbt-03 585126 500 153 114 233 +27.16 ± 15.33 1 43 122 84 0 +56.07 ± 30.91 ↓
394627 ncm-dbt-04 569949 500 148 110 242 +26.46 ± 14.39 1 36 137 76 0 +54.65 ± 28.94 ↓
394626 ncm-dbt-05 584076 500 151 100 249 +35.56 ± 13.81 0 30 139 81 0 +71.89 ± 28.58 ↓
394625 ncm-dbt-01 585295 500 159 106 235 +36.97 ± 14.04 0 31 135 84 0 +74.79 ± 29.13 ↓
394624 ncm-dbt-02 587579 500 158 95 247 +44.01 ± 14.47 0 31 125 94 0 +89.48 ± 30.48 ↓
394623 ncm-dbt-03 587749 500 154 100 246 +37.67 ± 14.74 0 35 127 87 1 +74.79 ± 30.24 ↓
394622 ncm-dbt-04 570308 500 130 108 262 +15.3 ± 14.58 1 43 140 65 1 +30.65 ± 28.6 ↓
394621 ncm-dbt-01 584916 500 157 103 240 +37.67 ± 14.08 1 26 143 78 2 +74.79 ± 27.98 ↓
394620 ncm-dbt-05 586562 500 157 103 240 +37.67 ± 14.74 0 36 124 90 0 +76.25 ± 30.64 ↓
394619 ncm-dbt-02 586181 500 162 86 252 +53.22 ± 14.15 0 25 124 101 0 +109.07 ± 30.54 ↓
394618 ncm-dbt-03 587367 500 154 107 239 +32.76 ± 14.3 1 32 136 81 0 +67.55 ± 29.02 ↓
394617 ncm-dbt-04 570789 500 147 97 256 +34.86 ± 14.31 0 34 132 84 0 +70.44 ± 29.57 ↓
394616 ncm-dbt-05 584748 500 167 97 236 +48.96 ± 14.34 0 28 124 98 0 +99.95 ± 30.58 ↓
394615 ncm-dbt-01 582861 500 162 104 234 +40.48 ± 14.65 0 32 130 86 2 +79.17 ± 29.81 ↓
394614 ncm-dbt-02 581902 500 147 87 266 +41.89 ± 14.61 0 33 124 93 0 +85.04 ± 30.63 ↓
394613 ncm-dbt-03 586562 500 141 118 241 +15.99 ± 15.5 4 42 131 73 0 +37.67 ± 29.77 ↓
394612 ncm-dbt-05 582611 500 154 104 242 +34.86 ± 14.83 1 34 130 84 1 +70.44 ± 29.84 ↓
394611 ncm-dbt-04 569949 500 157 93 250 +44.72 ± 14.64 0 31 125 93 1 +89.48 ± 30.48 ↓
394610 ncm-dbt-02 585464 500 147 93 260 +37.67 ± 14.22 0 32 132 86 0 +76.25 ± 29.54 ↓
394609 ncm-dbt-01 585928 500 158 102 240 +39.08 ± 15.08 1 33 127 87 2 +77.71 ± 30.23 ↓
394608 ncm-dbt-03 586181 500 147 118 235 +20.18 ± 15.2 2 43 129 76 0 +43.3 ± 30.02 ↓
394607 ncm-dbt-04 570669 500 155 91 254 +44.72 ± 15.15 1 33 117 99 0 +92.46 ± 31.58 ↓
394606 ncm-dbt-05 581943 500 158 105 237 +36.97 ± 14.83 0 37 123 90 0 +74.79 ± 30.78 ↓
394605 ncm-dbt-02 583279 500 145 93 262 +36.26 ± 15.04 1 35 126 87 1 +73.34 ± 30.38 ↓
394604 ncm-dbt-03 587409 500 150 103 247 +32.76 ± 14.17 0 34 135 81 0 +66.1 ± 29.17 ↓
394603 ncm-dbt-01 586350 500 150 103 247 +32.76 ± 13.76 0 31 141 78 0 +66.1 ± 28.33 ↓
394602 ncm-dbt-04 570509 500 163 94 243 +48.25 ± 15.34 1 31 118 98 2 +96.94 ± 31.44 ↓
394601 ncm-dbt-03 586943 500 156 111 233 +31.35 ± 14.47 0 37 131 82 0 +63.23 ± 29.72 ↓
394600 ncm-dbt-02 586646 500 154 112 234 +29.25 ± 14.97 3 33 133 81 0 +63.23 ± 29.45 ↓
394599 ncm-dbt-05 584874 500 154 93 253 +42.6 ± 13.84 1 24 138 87 0 +88.0 ± 28.61 ↓
394598 ncm-dbt-01 585253 500 148 104 248 +30.65 ± 14.42 1 34 135 80 0 +63.23 ± 29.18 ↓
394597 ncm-dbt-04 571913 500 155 101 244 +37.67 ± 14.87 2 29 134 83 2 +76.25 ± 29.26 ↓
394596 ncm-dbt-03 581735 500 159 96 245 +44.01 ± 14.06 0 27 134 88 1 +88.0 ± 29.2 ↓
394595 ncm-dbt-01 584411 500 150 89 261 +42.6 ± 13.7 1 22 143 83 1 +86.52 ± 27.87 ↓
394594 ncm-dbt-02 579248 500 157 99 244 +40.48 ± 14.12 1 26 138 84 1 +82.1 ± 28.65 ↓
394593 ncm-dbt-05 585885 500 155 108 237 +32.75 ± 14.56 0 36 132 81 1 +64.66 ± 29.59 ↓

Commit

Commit ID 6adbc6fa05bbd2a574a8c4c6a6ef2307280217ab
Author Dubslow
Date 2023-02-27 21:03:50 UTC
Late counter bonus: boost underestimated moves The idea here is very intuitive: since we've just proven that the move is good, then if it previously had poor stats, boost those stats more than otherwise. Passed STC: https://tests.stockfishchess.org/tests/view/63fb504ce74a12625bce4154 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 21128 W: 5763 L: 5481 D: 9884 Ptnml(0-2): 52, 2212, 5759, 2484, 57 Passed LTC: https://tests.stockfishchess.org/tests/view/63fb7825e74a12625bce491b LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 91904 W: 24764 L: 24359 D: 42781 Ptnml(0-2): 45, 8735, 27984, 9146, 42 closes https://github.com/official-stockfish/Stockfish/pull/4415 bench 4318808
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