Dev Builds » 20230401-1353

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 06:58:56 582890 3996 1252 852 1892 +34.9 ± 5.08 4 255 1084 647 8 +69.78 ± 10.26
ncm-dbt-02 06:59:25 586017 3998 1265 827 1906 +38.22 ± 5.22 2 275 1012 703 7 +76.47 ± 10.69
ncm-dbt-03 07:00:08 585444 4000 1268 851 1881 +36.35 ± 5.1 5 255 1062 674 4 +73.7 ± 10.39
ncm-dbt-04 06:59:47 568741 4024 1259 797 1968 +40.07 ± 5.14 1 258 1041 702 10 +79.59 ± 10.51
ncm-dbt-05 06:58:51 577454 3982 1230 800 1952 +37.67 ± 5.03 4 237 1080 665 5 +76.05 ± 10.27
20000 6274 4127 9599 +37.44 ± 2.29 16 1280 5279 3391 34 +75.12 ± 4.66

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
428452 ncm-dbt-04 569749 24 10 4 10 +88.72 ± 68.77 0 1 4 7 0 +190.85 ± 204.66 ↓
428451 ncm-dbt-05 578712 482 152 87 243 +47.14 ± 14.21 1 21 132 86 1 +96.08 ± 29.23 ↓
428450 ncm-dbt-03 585337 500 156 105 239 +35.56 ± 13.81 0 29 142 78 1 +70.44 ± 28.16 ↓
428449 ncm-dbt-01 583656 496 156 104 236 +36.56 ± 14.24 0 31 135 81 1 +72.48 ± 29.1 ↓
428448 ncm-dbt-02 585674 498 163 89 246 +52.01 ± 14.41 0 27 121 101 0 +106.47 ± 30.99 ↓
428447 ncm-dbt-04 568792 500 166 99 235 +46.84 ± 14.49 0 28 129 91 2 +92.46 ± 29.89 ↓
428446 ncm-dbt-05 577397 500 158 103 239 +38.37 ± 14.26 0 32 131 87 0 +77.71 ± 29.68 ↓
428445 ncm-dbt-01 584664 500 164 114 222 +34.86 ± 15.33 1 37 125 85 2 +68.99 ± 30.52 ↓
428444 ncm-dbt-02 585000 500 150 107 243 +29.95 ± 14.11 0 35 137 78 0 +60.36 ± 28.92 ↓
428443 ncm-dbt-03 583866 500 151 98 251 +36.97 ± 14.44 0 34 129 87 0 +74.79 ± 29.96 ↓
428442 ncm-dbt-04 570509 500 158 89 253 +48.25 ± 14.83 0 30 123 95 2 +95.44 ± 30.74 ↓
428441 ncm-dbt-05 574419 500 146 104 250 +29.25 ± 14.84 1 38 129 82 0 +60.36 ± 30.0 ↓
428440 ncm-dbt-02 588260 500 156 103 241 +36.97 ± 13.49 0 26 146 77 1 +73.34 ± 27.55 ↓
428439 ncm-dbt-01 581693 500 150 104 246 +32.05 ± 14.38 0 36 132 82 0 +64.66 ± 29.59 ↓
428438 ncm-dbt-03 587367 500 148 111 241 +25.76 ± 14.08 1 33 145 70 1 +51.8 ± 27.85 ↓
428437 ncm-dbt-04 567759 500 161 110 229 +35.56 ± 15.37 0 40 121 87 2 +68.99 ± 31.04 ↓
428436 ncm-dbt-05 581652 500 161 118 221 +29.95 ± 13.84 0 33 141 76 0 +60.36 ± 28.36 ↓
428435 ncm-dbt-02 587282 500 156 106 238 +34.86 ± 15.82 0 46 108 96 0 +70.44 ± 32.71 ↓
428434 ncm-dbt-01 580447 500 155 102 243 +36.97 ± 14.31 1 28 140 79 2 +73.34 ± 28.43 ↓
428433 ncm-dbt-03 585042 500 167 109 224 +40.48 ± 15.29 2 32 123 92 1 +83.57 ± 30.77 ↓
428432 ncm-dbt-04 569390 500 145 92 263 +36.97 ± 13.9 1 27 140 82 0 +76.25 ± 28.4 ↓
428431 ncm-dbt-05 574297 500 163 99 238 +44.72 ± 14.51 0 30 127 92 1 +89.48 ± 30.19 ↓
428430 ncm-dbt-02 588813 500 155 108 237 +32.76 ± 14.82 1 34 134 79 2 +64.66 ± 29.31 ↓
428429 ncm-dbt-01 583112 500 149 105 246 +30.65 ± 15.06 0 41 125 83 1 +60.36 ± 30.52 ↓
428428 ncm-dbt-03 584748 500 173 115 212 +40.48 ± 14.65 0 34 124 92 0 +82.1 ± 30.63 ↓
428427 ncm-dbt-04 570148 500 152 91 257 +42.6 ± 13.84 0 27 135 88 0 +86.52 ± 29.06 ↓
428426 ncm-dbt-05 577069 500 151 96 253 +38.37 ± 14.79 2 29 132 86 1 +79.17 ± 29.53 ↓
428425 ncm-dbt-01 583154 500 165 112 223 +36.97 ± 13.77 1 26 142 81 0 +76.25 ± 28.11 ↓
428424 ncm-dbt-02 584916 500 165 107 228 +40.48 ± 14.91 0 36 120 94 0 +82.1 ± 31.18 ↓
428423 ncm-dbt-03 584790 500 145 103 252 +29.25 ± 14.71 1 37 131 81 0 +60.36 ± 29.73 ↓
428422 ncm-dbt-04 567958 500 163 103 234 +41.89 ± 14.87 0 34 123 92 1 +83.57 ± 30.77 ↓
428421 ncm-dbt-01 583950 500 155 107 238 +33.46 ± 13.53 0 29 144 77 0 +67.55 ± 27.89 ↓
428420 ncm-dbt-05 575394 500 147 93 260 +37.67 ± 13.53 0 26 145 78 1 +74.79 ± 27.68 ↓
428419 ncm-dbt-02 583908 500 162 100 238 +43.3 ± 15.58 1 33 123 89 4 +83.57 ± 30.77 ↓
428418 ncm-dbt-03 585885 500 162 104 234 +40.48 ± 14.26 0 30 133 86 1 +80.63 ± 29.38 ↓
428417 ncm-dbt-04 567759 500 155 104 241 +35.56 ± 14.87 0 36 129 83 2 +68.99 ± 29.98 ↓
428416 ncm-dbt-05 580696 500 152 100 248 +36.26 ± 13.72 0 28 143 78 1 +71.89 ± 28.0 ↓
428415 ncm-dbt-01 582444 500 158 104 238 +37.67 ± 14.22 1 27 141 79 2 +74.79 ± 28.27 ↓
428414 ncm-dbt-02 584285 500 158 107 235 +35.56 ± 14.87 0 38 123 89 0 +71.89 ± 30.78 ↓
428413 ncm-dbt-04 566612 500 149 105 246 +30.65 ± 14.29 0 35 137 77 1 +60.36 ± 28.92 ↓
428412 ncm-dbt-03 586520 500 166 106 228 +41.9 ± 14.07 1 26 135 88 0 +86.52 ± 29.06 ↓

Commit

Commit ID c3c46feebba470dcbaa0a5a6ef83534091dffe6a
Author Muzhen Gaming
Date 2023-04-01 13:53:46 UTC
Remove reduction for moving threatened piece Simplify away "Decrease reduction if we move a threatened piece". Running a dbg_hit_on() shows that this line is only called ~0.12% of the time. Simplification STC: https://tests.stockfishchess.org/tests/view/641ec2dcdb43ab2ba6f88103 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 146128 W: 39168 L: 39070 D: 67890 Ptnml(0-2): 466, 16117, 39830, 16155, 496 Simplification LTC: https://tests.stockfishchess.org/tests/view/64200689db43ab2ba6f8bca8 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 248016 W: 66703 L: 66714 D: 114599 Ptnml(0-2): 105, 24202, 75406, 24189, 106 closes https://github.com/official-stockfish/Stockfish/pull/4471 Bench: 4961236
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