Dev Builds » 20220529-1654

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 06:54:08 582869 4014 1062 987 1965 +6.49 ± 5.18 1 422 1089 491 4 +12.47 ± 10.28
ncm-dbt-02 06:51:19 586027 4000 1066 960 1974 +9.21 ± 5.18 0 409 1079 509 3 +17.91 ± 10.33
ncm-dbt-03 06:54:18 584554 4004 1091 976 1937 +9.98 ± 5.08 4 373 1135 484 6 +19.63 ± 10.01
ncm-dbt-04 06:53:25 568596 3988 1092 935 1961 +13.68 ± 5.14 1 370 1100 517 6 +26.54 ± 10.21
ncm-dbt-05 06:54:40 582376 3994 1094 955 1945 +12.1 ± 5.19 4 380 1092 515 6 +23.87 ± 10.26
20000 5405 4813 9782 +10.29 ± 2.31 10 1954 5495 2516 25 +20.07 ± 4.57

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
432638 ncm-dbt-03 587707 4 0 1 3 -88.51 ± 137.63 0 1 1 0 0 -190.5 ± 634.21 ↓
432637 ncm-dbt-01 581985 14 2 3 9 -24.85 ± 111.54 0 3 2 2 0 -49.98 ± 262.59 ↓
432636 ncm-dbt-04 567759 488 136 107 245 +20.67 ± 13.7 0 35 145 64 0 +41.49 ± 27.73 ↓
432635 ncm-dbt-05 580447 494 128 123 243 +3.52 ± 14.91 1 53 133 60 0 +8.44 ± 29.51 ↓
432634 ncm-dbt-02 585464 500 156 110 234 +32.05 ± 14.38 0 35 135 79 1 +63.23 ± 29.18 ↓
432633 ncm-dbt-03 585506 500 138 115 247 +15.99 ± 14.25 0 44 139 67 0 +32.05 ± 28.73 ↓
432632 ncm-dbt-01 585169 500 128 130 242 -1.39 ± 14.55 1 55 139 55 0 -1.39 ± 28.76 ↓
432631 ncm-dbt-04 569151 500 138 112 250 +18.08 ± 14.42 0 43 139 67 1 +34.86 ± 28.73 ↓
432630 ncm-dbt-05 584201 500 135 121 244 +9.73 ± 13.99 0 45 147 57 1 +18.08 ± 27.69 ↓
432629 ncm-dbt-02 589283 500 129 115 256 +9.73 ± 14.12 0 47 142 61 0 +19.48 ± 28.36 ↓
432628 ncm-dbt-01 584537 500 147 123 230 +16.69 ± 14.04 0 42 142 66 0 +33.46 ± 28.33 ↓
432627 ncm-dbt-03 582903 500 138 128 234 +6.95 ± 14.53 0 52 136 62 0 +13.9 ± 29.15 ↓
432626 ncm-dbt-05 578136 500 148 119 233 +20.17 ± 14.45 0 43 135 72 0 +40.48 ± 29.24 ↓
432625 ncm-dbt-04 568116 500 136 116 248 +13.9 ± 15.94 1 55 118 75 1 +27.85 ± 31.39 ↓
432624 ncm-dbt-02 582945 500 140 120 240 +13.9 ± 14.6 0 48 134 68 0 +27.85 ± 29.39 ↓
432623 ncm-dbt-01 583824 500 133 118 249 +10.43 ± 14.7 0 51 133 66 0 +20.87 ± 29.53 ↓
432622 ncm-dbt-03 584327 500 148 108 244 +27.85 ± 13.69 0 32 147 70 1 +54.65 ± 27.55 ↓
432621 ncm-dbt-04 568514 500 140 120 240 +13.9 ± 14.85 0 49 133 67 1 +26.46 ± 29.52 ↓
432620 ncm-dbt-05 585506 500 141 109 250 +22.26 ± 14.34 0 38 145 64 3 +40.48 ± 27.9 ↓
432619 ncm-dbt-02 585970 500 123 126 251 -2.09 ± 15.24 0 63 128 58 1 -5.56 ± 30.16 ↓
432618 ncm-dbt-01 583531 500 135 112 253 +15.99 ± 15.14 0 50 128 71 1 +30.65 ± 30.16 ↓
432617 ncm-dbt-03 586477 500 129 118 253 +7.64 ± 14.72 1 49 139 60 1 +15.3 ± 28.76 ↓
432616 ncm-dbt-04 571873 500 129 113 258 +11.12 ± 14.75 0 50 135 64 1 +20.87 ± 29.27 ↓
432615 ncm-dbt-05 579744 500 132 119 249 +9.04 ± 15.45 0 58 121 71 0 +18.08 ± 31.02 ↓
432614 ncm-dbt-02 586604 500 134 117 249 +11.82 ± 14.94 0 52 129 69 0 +23.66 ± 30.03 ↓
432613 ncm-dbt-01 581319 500 120 127 253 -4.86 ± 13.82 0 55 147 48 0 -9.73 ± 27.7 ↓
432612 ncm-dbt-03 579951 500 125 130 245 -3.47 ± 15.11 1 61 130 58 0 -5.56 ± 29.91 ↓
432611 ncm-dbt-02 585843 500 130 131 239 -0.7 ± 14.87 0 59 134 56 1 -2.78 ± 29.41 ↓
432610 ncm-dbt-04 566770 500 142 125 233 +11.82 ± 14.3 0 47 139 64 0 +23.66 ± 28.75 ↓
432609 ncm-dbt-05 580489 500 142 141 217 +0.69 ± 14.74 0 58 133 59 0 +1.39 ± 29.53 ↓
432608 ncm-dbt-01 580945 500 139 122 239 +11.82 ± 15.31 0 53 129 66 2 +20.87 ± 30.03 ↓
432607 ncm-dbt-03 585337 500 133 116 251 +11.82 ± 13.9 0 42 151 55 2 +20.87 ± 27.13 ↓
432606 ncm-dbt-02 585000 500 127 116 257 +7.64 ± 14.07 0 48 143 59 0 +15.3 ± 28.23 ↓
432605 ncm-dbt-04 567759 500 131 113 256 +12.51 ± 14.36 0 46 141 62 1 +23.66 ± 28.48 ↓
432604 ncm-dbt-05 574906 500 138 111 251 +18.78 ± 14.47 1 39 144 64 2 +36.26 ± 28.05 ↓
432603 ncm-dbt-01 582360 500 120 127 253 -4.87 ± 14.73 0 61 136 52 1 -11.12 ± 29.15 ↓
432602 ncm-dbt-03 584034 500 126 119 255 +4.86 ± 14.48 1 49 143 56 1 +9.73 ± 28.23 ↓
432601 ncm-dbt-02 587113 500 127 125 248 +1.39 ± 14.68 0 57 134 59 0 +2.78 ± 29.41 ↓
432600 ncm-dbt-04 568832 500 140 129 231 +7.64 ± 13.8 0 45 150 54 1 +13.9 ± 27.28 ↓
432599 ncm-dbt-01 582152 500 138 125 237 +9.04 ± 14.71 0 52 133 65 0 +18.08 ± 29.53 ↓
432598 ncm-dbt-05 595586 500 130 112 258 +12.51 ± 14.99 2 46 134 68 0 +27.85 ± 29.39 ↓
432597 ncm-dbt-03 584748 500 154 141 205 +9.04 ± 14.06 1 43 149 56 1 +18.08 ± 27.41 ↓

Commit

Commit ID 1a168201bd8424da4cea384ee4c03973b2ccf0ca
Author Giacomo Lorenzetti
Date 2022-05-29 16:54:19 UTC
Small speedup in futility_move_count The speedup is around 0.25% using gcc 11.3.1 (bmi2, nnue bench, depth 16 and 23) while it is neutral using clang (same conditions). According to `perf` that integer division was one of the most time-consuming instructions in search (gcc disassembly). Passed STC: https://tests.stockfishchess.org/tests/view/628a17fe24a074e5cd59b3aa LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 22232 W: 5992 L: 5751 D: 10489 Ptnml(0-2): 88, 2235, 6218, 2498, 77 yellow LTC: https://tests.stockfishchess.org/tests/view/628a35d7ccae0450e35106f7 LLR: -2.95 (-2.94,2.94) <0.50,3.00> Total: 320168 W: 85853 L: 85326 D: 148989 Ptnml(0-2): 185, 29698, 99821, 30165, 215 This patch also suggests that UHO STC is sensible to small speedups (< 0.50%). closes https://github.com/official-stockfish/Stockfish/pull/4032 No functional change
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