Dev Builds » 20240909-1602

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 06:53:15 584996 4000 1521 559 1920 +85.23 ± 4.9 2 97 853 1033 15 +179.23 ± 11.61
ncm-dbt-02 06:54:25 587520 4002 1530 568 1904 +85.18 ± 4.94 3 106 828 1054 10 +180.47 ± 11.81
ncm-dbt-03 06:54:17 586290 4004 1517 609 1878 +80.18 ± 5.01 6 113 861 1011 11 +168.86 ± 11.57
ncm-dbt-04 06:54:24 570217 4008 1567 573 1868 +88.0 ± 5.02 4 101 817 1061 21 +185.12 ± 11.89
ncm-dbt-05 06:53:17 584410 3986 1514 561 1911 +84.71 ± 4.98 1 110 833 1033 16 +177.51 ± 11.77
20000 7649 2870 9481 +84.66 ± 2.22 16 527 4192 5192 73 +178.2 ± 5.24

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
376756 ncm-dbt-02 585717 2 1 0 1 +189.7 ± 55.98 0 0 0 1 0 +1129.65 ± 376.02 ↓
376755 ncm-dbt-03 582402 4 1 0 3 +88.51 ± 137.63 0 0 1 1 0 +190.5 ± 634.21 ↓
376754 ncm-dbt-04 570829 8 4 1 3 +136.8 ± 89.09 0 0 1 3 0 +337.69 ± 541.44 ↓
376753 ncm-dbt-05 582402 486 194 70 222 +90.65 ± 14.29 0 12 98 130 3 +189.9 ± 34.5 ↓
376752 ncm-dbt-01 585126 500 174 69 257 +74.06 ± 13.29 0 13 119 118 0 +155.54 ± 30.96 ↓
376751 ncm-dbt-02 586054 500 182 69 249 +79.9 ± 13.92 0 14 111 123 2 +165.8 ± 32.28 ↓
376750 ncm-dbt-03 587028 500 194 75 231 +84.31 ± 13.73 1 10 109 129 1 +179.9 ± 32.5 ↓
376749 ncm-dbt-04 568872 500 197 65 238 +93.95 ± 13.29 0 10 98 142 0 +204.07 ± 34.47 ↓
376748 ncm-dbt-05 585717 500 192 67 241 +88.74 ± 12.88 0 7 112 130 1 +189.0 ± 31.75 ↓
376747 ncm-dbt-01 585253 500 191 64 245 +90.22 ± 13.86 0 14 95 141 0 +194.57 ± 35.13 ↓
376746 ncm-dbt-02 587537 500 193 80 227 +79.9 ± 13.77 0 14 110 125 1 +167.53 ± 32.45 ↓
376745 ncm-dbt-03 587664 500 192 78 230 +80.63 ± 15.35 1 21 93 133 2 +169.27 ± 35.43 ↓
376744 ncm-dbt-04 571230 500 194 66 240 +90.97 ± 14.17 1 10 102 134 3 +192.71 ± 33.75 ↓
376743 ncm-dbt-05 584117 500 175 62 263 +79.9 ± 13.92 0 15 108 126 1 +167.53 ± 32.81 ↓
376742 ncm-dbt-01 584453 500 201 74 225 +90.22 ± 15.73 2 14 96 131 7 +185.33 ± 34.95 ↓
376741 ncm-dbt-02 588217 500 203 50 247 +109.83 ± 13.05 1 5 84 160 0 +249.64 ± 37.33 ↓
376740 ncm-dbt-03 587792 500 191 84 225 +75.52 ± 14.51 0 18 110 119 3 +153.86 ± 32.54 ↓
376739 ncm-dbt-04 569111 500 191 72 237 +84.31 ± 14.47 1 14 102 131 2 +178.11 ± 33.85 ↓
376738 ncm-dbt-05 585590 500 192 74 234 +83.57 ± 14.01 0 13 109 125 3 +172.78 ± 32.58 ↓
376737 ncm-dbt-01 585211 500 196 74 230 +86.52 ± 13.32 0 11 106 133 0 +185.33 ± 33.03 ↓
376736 ncm-dbt-02 588643 500 189 78 233 +78.43 ± 13.88 0 15 110 124 1 +164.07 ± 32.48 ↓
376735 ncm-dbt-03 586097 500 197 79 224 +83.57 ± 14.88 2 14 100 132 2 +178.11 ± 34.22 ↓
376734 ncm-dbt-04 570669 500 201 84 215 +82.83 ± 15.14 1 16 103 125 5 +169.27 ± 33.7 ↓
376733 ncm-dbt-05 582277 500 185 68 247 +82.83 ± 14.29 0 16 103 129 2 +172.78 ± 33.69 ↓
376732 ncm-dbt-01 583614 500 192 79 229 +79.9 ± 13.92 0 12 117 117 4 +162.35 ± 31.23 ↓
376731 ncm-dbt-02 589283 500 198 89 213 +76.98 ± 14.55 1 14 114 117 4 +157.24 ± 31.83 ↓
376730 ncm-dbt-03 586435 500 176 74 250 +71.88 ± 13.96 0 17 115 117 1 +148.85 ± 31.72 ↓
376729 ncm-dbt-04 572316 500 183 62 255 +85.78 ± 13.46 0 11 108 130 1 +181.7 ± 32.68 ↓
376728 ncm-dbt-05 583279 500 192 62 246 +92.45 ± 14.94 0 16 93 136 5 +190.85 ± 35.52 ↓
376727 ncm-dbt-01 584622 500 187 75 238 +79.17 ± 13.75 0 12 117 118 3 +162.35 ± 31.23 ↓
376726 ncm-dbt-02 588515 500 185 75 240 +77.71 ± 14.29 1 16 105 128 0 +165.8 ± 33.35 ↓
376725 ncm-dbt-04 570949 500 200 79 221 +85.78 ± 14.51 0 16 100 131 3 +178.11 ± 34.22 ↓
376724 ncm-dbt-03 583992 500 191 75 234 +82.1 ± 13.98 1 12 108 128 1 +174.55 ± 32.75 ↓
376723 ncm-dbt-05 585169 500 187 80 233 +75.52 ± 14.65 1 19 102 128 0 +160.64 ± 33.88 ↓
376722 ncm-dbt-01 587113 500 191 69 240 +86.52 ± 13.32 0 11 106 133 0 +185.33 ± 33.03 ↓
376721 ncm-dbt-03 587792 500 186 74 240 +79.17 ± 14.04 1 13 110 125 1 +167.53 ± 32.45 ↓
376720 ncm-dbt-02 587325 500 189 71 240 +83.57 ± 14.6 0 19 95 135 1 +176.33 ± 35.12 ↓
376719 ncm-dbt-04 568912 500 195 71 234 +88.0 ± 14.27 0 14 101 132 3 +183.51 ± 34.01 ↓
376718 ncm-dbt-05 586731 500 197 78 225 +84.3 ± 13.58 0 12 108 129 1 +178.11 ± 32.72 ↓
376717 ncm-dbt-01 584579 500 189 55 256 +95.44 ± 13.47 0 10 97 142 1 +206.01 ± 34.66 ↓
376716 ncm-dbt-02 586393 500 190 56 254 +95.44 ± 13.31 0 9 99 141 1 +206.01 ± 34.24 ↓
376715 ncm-dbt-03 587409 500 189 70 241 +84.31 ± 12.79 0 8 115 127 0 +179.9 ± 31.32 ↓
376714 ncm-dbt-04 569071 500 202 73 225 +91.71 ± 14.34 1 10 102 133 4 +192.71 ± 33.75 ↓

Commit

Commit ID a8cb002038bf314764a737077864a961c0e1d145
Author Michael Chaly
Date 2024-09-09 16:02:32 UTC
Simplify ttmove reduction Remove condition that clamps reductions for tt move. Passed STC: https://tests.stockfishchess.org/tests/view/66d5f1239de3e7f9b33d14b0 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 91136 W: 23805 L: 23646 D: 43685 Ptnml(0-2): 334, 10328, 24066, 10525, 315 Passed LTC: https://tests.stockfishchess.org/tests/view/66d7c5889de3e7f9b33d1721 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 139242 W: 35130 L: 35030 D: 69082 Ptnml(0-2): 78, 15200, 38986, 15258, 99 closes https://github.com/official-stockfish/Stockfish/pull/5574 Bench: 1268715
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