Dev Builds » 20250112-2015

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 06:48:57 584046 4012 1579 537 1896 +92.35 ± 4.91 2 93 787 1109 15 +196.91 ± 12.12
ncm-dbt-02 06:48:02 586852 4000 1586 563 1851 +90.87 ± 4.93 2 91 809 1078 20 +192.01 ± 11.94
ncm-dbt-03 06:47:08 585747 4000 1540 553 1907 +87.54 ± 4.92 3 92 837 1051 17 +184.65 ± 11.72
ncm-dbt-04 06:47:58 571110 4000 1547 535 1918 +89.85 ± 4.87 3 84 827 1070 16 +190.62 ± 11.79
ncm-dbt-05 06:49:01 583032 3988 1536 527 1925 +89.86 ± 4.94 2 102 785 1095 10 +191.78 ± 12.14
20000 7788 2715 9497 +90.09 ± 2.2 12 462 4045 5403 78 +191.17 ± 5.34

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
395548 ncm-dbt-01 585717 12 4 1 7 +88.66 ± 75.75 0 0 3 3 0 +190.73 ± 238.47
395547 ncm-dbt-05 581319 488 188 63 237 +91.02 ± 14.56 0 13 97 130 4 +188.96 ± 34.72
395546 ncm-dbt-04 569310 500 189 70 241 +84.31 ± 13.73 1 10 109 129 1 +179.9 ± 32.5
395545 ncm-dbt-02 585084 500 203 80 217 +87.26 ± 13.95 1 11 103 134 1 +187.16 ± 33.6
395544 ncm-dbt-03 585843 500 186 63 251 +87.26 ± 13.64 0 11 107 130 2 +183.51 ± 32.85
395543 ncm-dbt-01 586181 500 197 71 232 +89.48 ± 14.0 0 13 100 135 2 +189.0 ± 34.18
395542 ncm-dbt-04 573689 500 194 74 232 +85.04 ± 13.28 0 11 108 131 0 +181.7 ± 32.68
395541 ncm-dbt-05 583740 500 196 71 233 +88.74 ± 14.28 1 14 94 141 0 +192.71 ± 35.33
395540 ncm-dbt-03 583405 500 195 75 230 +85.04 ± 13.44 0 10 112 126 2 +178.11 ± 31.94
395539 ncm-dbt-01 584664 500 192 64 244 +90.97 ± 14.32 1 12 97 138 2 +194.57 ± 34.74
395538 ncm-dbt-02 588558 500 196 73 231 +87.26 ± 14.4 0 15 100 132 3 +181.7 ± 34.21
395537 ncm-dbt-04 572679 500 189 53 258 +96.94 ± 13.65 0 8 102 136 4 +204.07 ± 33.61
395536 ncm-dbt-03 587409 500 192 68 240 +88.0 ± 13.66 0 11 106 131 2 +185.33 ± 33.03
395535 ncm-dbt-02 586943 500 206 69 225 +97.69 ± 14.13 0 12 92 143 3 +207.95 ± 35.71
395534 ncm-dbt-01 581693 500 195 71 234 +88.0 ± 14.56 0 16 97 134 3 +183.51 ± 34.76
395533 ncm-dbt-05 584579 500 192 70 238 +86.52 ± 14.38 0 16 98 134 2 +181.7 ± 34.58
395532 ncm-dbt-04 569190 500 196 68 236 +90.97 ± 13.87 1 10 100 138 1 +196.45 ± 34.12
395531 ncm-dbt-05 587664 500 193 72 235 +85.78 ± 13.77 0 13 104 132 1 +181.7 ± 33.45
395530 ncm-dbt-03 585843 500 191 71 238 +85.04 ± 14.49 2 10 107 128 3 +179.9 ± 32.89
395529 ncm-dbt-02 587664 500 188 69 243 +84.3 ± 14.47 0 15 105 126 4 +172.78 ± 33.32
395528 ncm-dbt-01 583908 500 205 63 232 +101.46 ± 13.2 0 7 96 145 2 +219.87 ± 34.73
395527 ncm-dbt-04 570669 500 200 66 234 +95.44 ± 13.79 0 8 105 132 5 +198.34 ± 33.06
395526 ncm-dbt-05 579372 500 200 72 228 +90.96 ± 12.75 0 6 111 132 1 +194.57 ± 31.84
395525 ncm-dbt-03 582903 500 191 60 249 +93.2 ± 13.12 0 7 107 134 2 +198.34 ± 32.63
395524 ncm-dbt-02 583447 500 192 66 242 +89.48 ± 13.38 0 10 105 134 1 +190.85 ± 33.16
395523 ncm-dbt-01 582819 500 190 62 248 +90.96 ± 14.02 0 13 98 137 2 +192.71 ± 34.55
395522 ncm-dbt-04 572155 500 192 72 236 +85.04 ± 14.35 0 17 97 135 1 +179.9 ± 34.76
395521 ncm-dbt-02 586858 500 202 70 228 +93.95 ± 13.77 0 8 107 130 5 +194.57 ± 32.69
395520 ncm-dbt-01 582318 500 200 75 225 +88.74 ± 13.36 0 8 112 127 3 +185.33 ± 31.82
395519 ncm-dbt-05 581070 500 188 53 259 +96.19 ± 13.48 0 11 93 146 0 +209.91 ± 35.49
395518 ncm-dbt-03 583112 500 188 60 252 +90.97 ± 14.91 1 15 92 139 3 +192.71 ± 35.72
395517 ncm-dbt-04 568395 500 196 54 250 +101.46 ± 12.87 0 5 100 143 2 +219.87 ± 33.78
395516 ncm-dbt-05 582360 500 192 67 241 +88.74 ± 14.13 1 12 99 137 1 +190.85 ± 34.36
395515 ncm-dbt-03 587325 500 191 78 231 +79.9 ± 13.77 0 14 110 125 1 +167.53 ± 32.45
395514 ncm-dbt-02 587452 500 195 70 235 +88.74 ± 13.83 0 13 100 136 1 +189.0 ± 34.18
395513 ncm-dbt-01 585632 500 193 70 237 +87.26 ± 13.65 0 13 101 136 0 +187.16 ± 33.99
395512 ncm-dbt-03 590138 500 206 78 216 +90.96 ± 14.17 0 14 96 138 2 +192.71 ± 34.94
395511 ncm-dbt-02 588813 500 204 66 230 +98.44 ± 13.67 1 7 97 143 2 +213.85 ± 34.58
395510 ncm-dbt-04 572800 500 191 78 231 +79.9 ± 14.5 1 15 106 126 2 +167.53 ± 33.17
395509 ncm-dbt-05 584159 500 187 59 254 +90.96 ± 14.47 0 17 89 143 1 +194.57 ± 36.29
395508 ncm-dbt-01 583489 500 203 60 237 +102.22 ± 14.17 1 11 83 154 1 +226.0 ± 37.66

Commit

Commit ID c88a5b395021a0020b417faf897e8ad3b71512e7
Author pb00067
Date 2025-01-12 20:15:35 UTC
Simplify away hint for common parent position at probcut Since it's introduction at probcut step the nnue network has changed substantially and now it no longer seems useful. Passed non-regression test at STC https://tests.stockfishchess.org/tests/view/675fe27986d5ee47d9542d86 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 118656 W: 30732 L: 30609 D: 57315 Ptnml(0-2): 319, 12767, 33049, 12858, 335 N.B.: It may be useful to reintroduce it here at probcut if we know that a node that was cut away previously now has to be explored. Exploring new ground will deliver no tt-hits so in this case the hint for common parent position might be useful. No functional change
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