Dev Builds » 20210805-0644

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 06:54:52 582791 4000 510 1543 1947 -91.8 ± 5.09 29 1085 776 110 0 -191.78 ± 12.22
ncm-dbt-02 06:54:26 586453 4000 499 1533 1968 -91.9 ± 5.12 29 1090 768 112 1 -192.24 ± 12.29
ncm-dbt-03 06:54:55 584085 4000 546 1506 1948 -85.04 ± 5.16 21 1054 790 134 1 -177.22 ± 12.12
ncm-dbt-04 06:54:38 567929 4000 487 1542 1971 -93.85 ± 5.07 32 1093 774 100 1 -196.45 ± 12.23
ncm-dbt-05 06:55:49 581398 4000 503 1525 1972 -90.78 ± 5.07 31 1066 798 104 1 -189.0 ± 12.04
20000 2545 7649 9806 -90.67 ± 2.28 142 5388 3906 560 4 -189.28 ± 5.44

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
436780 ncm-dbt-05 583614 500 67 184 249 -82.83 ± 13.7 3 122 114 11 0 -171.02 ± 31.66
436779 ncm-dbt-01 583908 500 53 192 255 -99.2 ± 13.35 1 146 94 9 0 -215.85 ± 35.23
436778 ncm-dbt-03 585169 500 73 183 244 -77.7 ± 15.53 5 123 99 23 0 -155.54 ± 34.37
436777 ncm-dbt-02 586562 500 68 201 231 -94.69 ± 14.69 4 140 91 15 0 -198.34 ± 35.92
436776 ncm-dbt-04 567244 500 67 190 243 -87.26 ± 14.54 3 133 98 16 0 -181.7 ± 34.58
436775 ncm-dbt-05 576823 500 61 191 248 -92.46 ± 14.79 5 134 98 12 1 -192.71 ± 34.55
436774 ncm-dbt-01 584790 500 60 185 255 -88.74 ± 14.43 3 134 98 15 0 -185.33 ± 34.57
436773 ncm-dbt-02 586562 500 61 177 262 -82.1 ± 14.56 3 126 106 14 1 -171.02 ± 33.15
436772 ncm-dbt-04 568474 500 68 186 246 -83.57 ± 15.57 4 132 93 20 1 -172.78 ± 35.45
436771 ncm-dbt-03 583740 500 63 195 242 -93.95 ± 14.07 3 138 97 12 0 -198.34 ± 34.72
436770 ncm-dbt-01 582527 500 66 193 241 -90.22 ± 14.6 6 128 103 13 0 -183.51 ± 33.63
436769 ncm-dbt-05 583572 500 60 195 245 -96.19 ± 13.95 4 137 99 10 0 -202.15 ± 34.28
436768 ncm-dbt-02 584664 500 69 199 232 -92.45 ± 15.22 7 132 95 16 0 -187.16 ± 35.14
436767 ncm-dbt-03 583992 500 69 193 238 -88.0 ± 14.85 2 139 90 19 0 -185.33 ± 36.06
436766 ncm-dbt-04 569390 500 51 187 262 -96.94 ± 14.12 3 142 93 12 0 -206.01 ± 35.51
436765 ncm-dbt-01 583405 500 67 196 237 -91.71 ± 14.78 6 131 99 14 0 -187.16 ± 34.38
436764 ncm-dbt-02 588132 500 60 193 247 -94.69 ± 14.24 2 143 91 14 0 -202.15 ± 35.92
436763 ncm-dbt-05 583950 500 70 193 237 -87.26 ± 13.49 2 129 109 10 0 -183.51 ± 32.46
436762 ncm-dbt-04 568593 500 57 194 249 -97.69 ± 14.58 3 146 86 15 0 -207.95 ± 36.95
436761 ncm-dbt-03 581236 500 71 187 242 -82.1 ± 13.68 1 127 109 13 0 -172.78 ± 32.58
436760 ncm-dbt-01 582861 500 61 187 252 -89.48 ± 14.88 3 138 91 18 0 -187.16 ± 35.88
436759 ncm-dbt-02 585169 500 56 187 257 -93.2 ± 13.91 3 136 100 11 0 -196.45 ± 34.12
436758 ncm-dbt-05 579661 500 61 206 233 -103.73 ± 14.34 4 149 85 12 0 -221.9 ± 37.21
436757 ncm-dbt-04 567799 500 56 197 247 -100.7 ± 13.85 7 133 104 6 0 -207.95 ± 33.1
436756 ncm-dbt-03 585674 500 67 190 243 -87.26 ± 14.69 4 131 99 16 0 -179.9 ± 34.4
436755 ncm-dbt-01 581444 500 68 190 242 -86.52 ± 14.67 3 133 97 17 0 -179.9 ± 34.76
436754 ncm-dbt-02 585421 500 70 188 242 -83.57 ± 14.74 3 130 99 18 0 -172.78 ± 34.4
436753 ncm-dbt-05 578753 500 67 181 252 -80.63 ± 14.38 2 127 104 17 0 -167.53 ± 33.52
436752 ncm-dbt-04 566533 500 61 191 248 -92.45 ± 13.43 1 138 101 10 0 -198.34 ± 33.9
436751 ncm-dbt-03 585169 500 70 170 260 -70.43 ± 13.76 1 114 119 16 0 -145.54 ± 31.07
436750 ncm-dbt-01 583279 500 66 206 228 -99.95 ± 13.52 3 142 97 8 0 -213.85 ± 34.58
436749 ncm-dbt-02 587155 500 48 195 257 -105.25 ± 13.22 2 150 91 7 0 -230.16 ± 35.78
436748 ncm-dbt-04 567482 500 62 196 242 -95.44 ± 14.4 5 136 97 12 0 -198.34 ± 34.72
436747 ncm-dbt-03 585970 500 63 196 241 -94.69 ± 14.54 4 139 93 14 0 -198.34 ± 35.52
436746 ncm-dbt-05 584076 500 61 185 254 -88.0 ± 14.99 6 128 100 16 0 -178.11 ± 34.22
436745 ncm-dbt-01 580116 500 69 194 237 -88.74 ± 14.72 4 133 97 16 0 -183.51 ± 34.76
436744 ncm-dbt-04 567918 500 65 201 234 -96.94 ± 14.12 6 133 102 9 0 -200.24 ± 33.67
436743 ncm-dbt-02 587962 500 67 193 240 -89.48 ± 15.02 5 133 95 17 0 -183.51 ± 35.13
436742 ncm-dbt-05 580738 500 56 190 254 -95.44 ± 14.99 5 140 89 16 0 -198.34 ± 36.31
436741 ncm-dbt-03 581735 500 70 192 238 -86.52 ± 15.37 1 143 84 21 1 -185.33 ± 37.13

Commit

Commit ID 31ebd918ea54b8c9fccbc1e1fa269772ed0949df
Author VoyagerOne
Date 2021-08-05 06:44:38 UTC
Futile pruning simplification Remove CMH conditions in futile pruning. STC: LLR: 2.94 (-2.94,2.94) <-2.50,0.50> Total: 93520 W: 7165 L: 7138 D: 79217 Ptnml(0-2): 222, 5923, 34427, 5982, 206 https://tests.stockfishchess.org/tests/view/61083104e50a153c346ef8df LTC: LLR: 2.93 (-2.94,2.94) <-2.50,0.50> Total: 59072 W: 1746 L: 1706 D: 55620 Ptnml(0-2): 13, 1562, 26353, 1588, 20 https://tests.stockfishchess.org/tests/view/610894f2e50a153c346ef913 closes https://github.com/official-stockfish/Stockfish/pull/3638 Bench: 5229673
Copyright 2011–2025 Next Chess Move LLC