Dev Builds » 20220514-1117

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 06:51:40 581891 4000 1038 964 1998 +6.43 ± 5.17 4 409 1100 483 4 +12.86 ± 10.22
ncm-dbt-02 06:50:35 587189 4000 1084 974 1942 +9.56 ± 5.25 5 404 1071 516 4 +19.3 ± 10.38
ncm-dbt-03 06:51:53 584611 4000 1080 996 1924 +7.3 ± 5.24 3 414 1089 484 10 +13.38 ± 10.28
ncm-dbt-04 06:52:02 569397 4016 1072 994 1950 +6.75 ± 5.12 7 392 1130 474 5 +13.85 ± 10.05
ncm-dbt-05 06:50:43 583224 3984 1079 969 1936 +9.6 ± 5.16 4 385 1106 491 6 +18.86 ± 10.17
20000 5353 4897 9750 +7.92 ± 2.32 23 2004 5496 2448 29 +15.65 ± 4.57

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
416070 ncm-dbt-04 572517 16 5 5 6 0.0 ± 60.91 0 1 6 1 0 -0.0 ± 125.57 ↓
416069 ncm-dbt-05 581943 484 130 118 236 +8.62 ± 15.26 0 53 124 65 0 +17.24 ± 30.64 ↓
416068 ncm-dbt-01 580904 500 138 129 233 +6.25 ± 13.54 0 45 151 54 0 +12.51 ± 27.15 ↓
416067 ncm-dbt-03 585042 500 136 112 252 +16.69 ± 14.04 0 42 142 66 0 +33.46 ± 28.33 ↓
416066 ncm-dbt-02 587070 500 128 124 248 +2.78 ± 14.16 1 49 145 55 0 +6.95 ± 27.97 ↓
416065 ncm-dbt-04 569709 500 130 109 261 +14.6 ± 14.53 1 43 141 64 1 +29.25 ± 28.47 ↓
416064 ncm-dbt-05 585379 500 134 122 244 +8.34 ± 14.39 1 47 141 61 0 +18.08 ± 28.49 ↓
416063 ncm-dbt-03 584369 500 132 136 232 -2.78 ± 15.17 1 58 138 50 3 -8.34 ± 28.89 ↓
416062 ncm-dbt-01 579661 500 131 128 241 +2.09 ± 13.96 1 48 148 53 0 +5.56 ± 27.57 ↓
416061 ncm-dbt-02 586816 500 142 123 235 +13.21 ± 15.53 1 52 125 71 1 +26.46 ± 30.53 ↓
416060 ncm-dbt-04 568116 500 135 130 235 +3.48 ± 14.35 1 50 142 57 0 +8.34 ± 28.37 ↓
416059 ncm-dbt-05 583154 500 147 120 233 +18.78 ± 14.47 1 41 138 70 0 +39.08 ± 28.85 ↓
416058 ncm-dbt-03 584327 500 140 123 237 +11.82 ± 15.06 0 52 130 67 1 +22.27 ± 29.91 ↓
416057 ncm-dbt-01 580116 500 125 113 262 +8.34 ± 15.27 2 51 130 67 0 +19.48 ± 29.91 ↓
416056 ncm-dbt-02 590053 500 130 133 237 -2.08 ± 14.61 1 56 138 55 0 -2.78 ± 28.89 ↓
416055 ncm-dbt-04 567284 500 138 131 231 +4.86 ± 13.95 1 45 151 52 1 +9.73 ± 27.15 ↓
416054 ncm-dbt-05 583614 500 124 109 267 +10.43 ± 14.95 1 48 138 61 2 +19.48 ± 28.88 ↓
416053 ncm-dbt-03 583196 500 143 111 246 +22.26 ± 14.98 0 44 132 72 2 +41.89 ± 29.63 ↓
416052 ncm-dbt-01 583112 500 131 107 262 +16.69 ± 14.69 0 47 132 71 0 +33.46 ± 29.64 ↓
416051 ncm-dbt-02 586393 500 147 100 253 +32.75 ± 15.07 0 40 124 85 1 +64.66 ± 30.65 ↓
416050 ncm-dbt-04 569350 500 126 111 263 +10.43 ± 14.18 0 47 141 62 0 +20.87 ± 28.49 ↓
416049 ncm-dbt-05 585169 500 134 125 241 +6.25 ± 13.81 0 46 150 53 1 +11.12 ± 27.29 ↓
416048 ncm-dbt-03 584537 500 130 121 249 +6.25 ± 14.6 0 53 135 62 0 +12.51 ± 29.28 ↓
416047 ncm-dbt-02 587240 500 128 120 252 +5.56 ± 15.41 0 60 122 68 0 +11.12 ± 30.9 ↓
416046 ncm-dbt-01 580323 500 118 122 260 -2.78 ± 13.76 0 52 151 46 1 -6.95 ± 27.15 ↓
416045 ncm-dbt-04 569031 500 124 137 239 -9.04 ± 14.83 2 59 140 48 1 -16.69 ± 28.62 ↓
416044 ncm-dbt-05 581985 500 138 132 230 +4.17 ± 14.15 1 48 145 56 0 +9.73 ± 27.97 ↓
416043 ncm-dbt-03 585759 500 134 128 238 +4.17 ± 14.92 1 53 136 59 1 +8.34 ± 29.15 ↓
416042 ncm-dbt-01 584159 500 134 119 247 +10.42 ± 15.07 0 52 133 63 2 +18.08 ± 29.53 ↓
416041 ncm-dbt-04 569031 500 143 127 230 +11.12 ± 14.11 0 46 142 62 0 +22.27 ± 28.35 ↓
416040 ncm-dbt-02 586774 500 133 133 234 0.0 ± 14.55 0 56 139 54 1 -1.39 ± 28.76 ↓
416039 ncm-dbt-05 582027 500 140 129 231 +7.64 ± 14.84 0 54 131 65 0 +15.3 ± 29.78 ↓
416038 ncm-dbt-04 568951 500 133 124 243 +6.26 ± 14.34 1 48 142 59 0 +13.9 ± 28.36 ↓
416037 ncm-dbt-01 584076 500 136 127 237 +6.25 ± 14.98 0 55 132 62 1 +11.12 ± 29.66 ↓
416036 ncm-dbt-02 585253 500 144 124 232 +13.9 ± 15.22 1 49 130 69 1 +27.85 ± 29.9 ↓
416035 ncm-dbt-03 584285 500 129 129 242 -0.0 ± 15.18 1 58 132 58 1 -0.0 ± 29.66 ↓
416034 ncm-dbt-05 582527 500 132 114 254 +12.51 ± 14.87 0 48 139 60 3 +20.87 ± 28.75 ↓
416033 ncm-dbt-02 587919 500 132 117 251 +10.43 ± 13.92 1 42 148 59 0 +22.27 ± 27.54 ↓
416032 ncm-dbt-04 570589 500 138 120 242 +12.51 ± 15.72 1 53 125 69 2 +23.66 ± 30.53 ↓
416031 ncm-dbt-01 582778 500 125 119 256 +4.17 ± 15.53 1 59 123 67 0 +9.73 ± 30.78 ↓
416030 ncm-dbt-03 585379 500 136 136 228 0.0 ± 14.42 0 54 144 50 2 -2.78 ± 28.1 ↓

Commit

Commit ID 5372f81cc81d5be3040db6f2dbfff108c460baf9
Author disservin
Date 2022-05-14 11:17:35 UTC
SE depth scaling using the previous depth This patch makes the SE depth condition more robust and allows it to scale with completed depth from a previous search. At long TC this patch is almost equivalent to https://github.com/official-stockfish/Stockfish/pull/4016 which had VLTC: https://tests.stockfishchess.org/tests/view/626abd7e8707aa698c0093a8 Elo: 2.35 +-1.5 (95%) LOS: 99.9% Total: 40000 W: 10991 L: 10720 D: 18289 Ptnml(0-2): 8, 3534, 12648, 3799, 11 nElo: 5.47 +-3.4 (95%) PairsRatio: 1.08 VLTC multicore: https://tests.stockfishchess.org/tests/view/6272a6afc8f14123163c1997 LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 86808 W: 24165 L: 23814 D: 38829 Ptnml(0-2): 11, 7253, 28524, 7606, 10 however, it is now also gaining at LTC: LTC: https://tests.stockfishchess.org/tests/view/627e7cb523c0c72a05b651a9 LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 27064 W: 7285 L: 7046 D: 12733 Ptnml(0-2): 8, 2446, 8390, 2675, 13 and should have nearly no influence at STC as depth 27 is rarely reached. It was noticed that initializing the threshold with MAX_PLY, had an adverse effect, possibly because the first move is sensitive to this. closes https://github.com/official-stockfish/Stockfish/pull/4021 closes https://github.com/official-stockfish/Stockfish/pull/4016 Bench: 6481017
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