Dev Builds » 20201214-0652

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 06:48:39 584009 4000 325 1844 1831 -138.89 ± 4.97 102 1343 527 28 0 -307.19 ± 14.83
ncm-dbt-02 06:49:00 585405 4000 324 1854 1822 -140.01 ± 4.97 100 1361 508 31 0 -311.77 ± 15.12
ncm-dbt-03 06:50:11 584517 4002 291 1860 1851 -143.92 ± 4.93 105 1385 485 26 0 -323.89 ± 15.47
ncm-dbt-04 06:49:50 568507 4000 265 1844 1891 -145.02 ± 4.77 87 1432 454 27 0 -334.88 ± 16.01
ncm-dbt-05 06:51:10 581341 3998 289 1854 1855 -143.67 ± 4.77 86 1418 470 25 0 -330.13 ± 15.72
20000 1494 9256 9250 -142.3 ± 2.19 480 6939 2444 137 0 -321.34 ± 6.88

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
458068 ncm-dbt-03 583531 2 1 1 0 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47
458067 ncm-dbt-05 582402 498 35 221 242 -136.36 ± 12.43 6 175 67 1 0 -317.44 ± 41.77
458066 ncm-dbt-02 586266 500 36 243 221 -153.02 ± 14.3 18 173 57 2 0 -342.85 ± 45.71
458065 ncm-dbt-04 571391 500 33 223 244 -138.99 ± 13.29 9 175 63 3 0 -318.25 ± 43.39
458064 ncm-dbt-03 583950 500 44 233 223 -138.18 ± 14.76 15 164 66 5 0 -298.62 ± 42.41
458063 ncm-dbt-01 583656 500 39 233 228 -142.25 ± 13.94 14 168 66 2 0 -315.35 ± 42.24
458062 ncm-dbt-02 582527 500 40 231 229 -139.81 ± 14.55 14 168 63 5 0 -306.84 ± 43.45
458061 ncm-dbt-04 567244 500 35 233 232 -145.54 ± 12.64 9 181 59 1 0 -342.85 ± 44.76
458060 ncm-dbt-03 582193 500 44 238 218 -142.25 ± 13.56 11 175 61 3 0 -324.17 ± 44.15
458059 ncm-dbt-05 581818 500 34 230 236 -143.89 ± 13.89 11 179 55 5 0 -330.23 ± 46.62
458058 ncm-dbt-01 584874 500 38 236 226 -145.54 ± 14.02 17 164 69 0 0 -318.25 ± 40.94
458057 ncm-dbt-02 583447 500 32 227 241 -143.07 ± 12.75 8 181 59 2 0 -336.46 ± 44.87
458056 ncm-dbt-05 584706 500 34 231 235 -144.71 ± 13.67 11 179 56 4 0 -333.32 ± 46.21
458055 ncm-dbt-03 585759 500 28 233 239 -151.34 ± 12.36 9 188 52 1 0 -366.78 ± 47.92
458054 ncm-dbt-04 568275 500 29 233 238 -150.51 ± 14.02 13 183 49 5 0 -349.43 ± 49.46
458053 ncm-dbt-01 584790 500 49 230 221 -131.74 ± 14.2 12 161 73 4 0 -285.49 ± 40.16
458052 ncm-dbt-02 586943 500 37 236 227 -146.36 ± 13.61 14 172 63 1 0 -330.23 ± 43.2
458051 ncm-dbt-05 580945 500 33 237 230 -150.51 ± 14.21 15 178 53 4 0 -342.85 ± 47.56
458050 ncm-dbt-03 584327 500 35 235 230 -147.19 ± 14.15 15 173 59 3 0 -330.23 ± 44.94
458049 ncm-dbt-04 567482 500 30 236 234 -152.18 ± 13.16 10 190 46 4 0 -366.78 ± 51.18
458048 ncm-dbt-01 584916 500 37 238 225 -148.02 ± 13.54 13 177 58 2 0 -339.63 ± 45.29
458047 ncm-dbt-02 585126 500 38 228 234 -138.99 ± 14.03 11 173 61 5 0 -312.48 ± 44.19
458046 ncm-dbt-03 584453 500 43 223 234 -130.94 ± 13.87 9 167 69 5 0 -290.66 ± 41.43
458045 ncm-dbt-05 579455 500 45 232 223 -136.56 ± 12.98 7 176 64 3 0 -315.35 ± 43.03
458044 ncm-dbt-01 583614 500 50 238 212 -137.37 ± 14.25 13 166 67 4 0 -301.33 ± 42.04
458043 ncm-dbt-04 567958 500 39 226 235 -136.56 ± 13.73 9 174 62 5 0 -309.64 ± 43.82
458042 ncm-dbt-05 582277 500 41 232 227 -139.81 ± 13.64 11 172 64 3 0 -315.35 ± 43.03
458041 ncm-dbt-02 588260 500 48 225 227 -128.55 ± 13.91 8 167 69 6 0 -285.49 ± 41.44
458040 ncm-dbt-03 584495 500 39 231 230 -140.62 ± 13.8 12 171 64 3 0 -315.35 ± 43.03
458039 ncm-dbt-04 568951 500 43 228 229 -134.95 ± 14.31 12 166 67 5 0 -295.94 ± 42.08
458038 ncm-dbt-01 582527 500 37 214 249 -128.55 ± 13.91 7 170 66 7 0 -288.06 ± 42.4
458037 ncm-dbt-05 575557 500 33 242 225 -154.7 ± 13.24 14 182 53 1 0 -363.2 ± 47.43
458036 ncm-dbt-02 585042 500 49 235 216 -135.76 ± 14.81 16 158 72 4 0 -288.06 ± 40.46
458035 ncm-dbt-03 587537 500 32 233 235 -148.02 ± 14.67 18 168 61 3 0 -324.17 ± 44.15
458034 ncm-dbt-01 582068 500 32 228 240 -143.89 ± 13.12 11 175 63 1 0 -330.23 ± 43.2
458033 ncm-dbt-04 570108 500 28 243 229 -159.78 ± 13.18 15 186 48 1 0 -381.7 ± 50.02
458032 ncm-dbt-02 585632 500 44 229 227 -134.95 ± 14.31 11 169 64 6 0 -298.62 ± 43.1
458031 ncm-dbt-01 585632 500 43 227 230 -134.15 ± 15.33 15 162 65 8 0 -285.49 ± 42.7
458030 ncm-dbt-04 566651 500 28 222 250 -142.25 ± 13.37 10 177 60 3 0 -327.18 ± 44.54
458029 ncm-dbt-03 584411 500 25 233 242 -153.86 ± 14.08 16 179 52 3 0 -352.8 ± 48.05
458028 ncm-dbt-05 583572 500 34 229 237 -143.07 ± 13.73 11 177 58 4 0 -327.18 ± 45.37

Commit

Commit ID a88a38c3a91749181ffa5d6dc0af7314a70a1c41
Author Vizvezdenec
Date 2020-12-14 06:52:02 UTC
Increase reduction in case of stable best move The idea of this patch is pretty simple - we already do more reductions for non-PV and root nodes in case of stable best move for depth > 10. This patch makes us do so if root depth if > 10 instead, which is logical since best move changes (thus instability of it) is counted at root, so it makes a lot of sense to use depth of the root. passed STC https://tests.stockfishchess.org/tests/view/5fd643271ac16912018885c5 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 13232 W: 1308 L: 1169 D: 10755 Ptnml(0-2): 39, 935, 4535, 1062, 45 passed LTC https://tests.stockfishchess.org/tests/view/5fd68db11ac16912018885f0 LLR: 2.96 (-2.94,2.94) {0.25,1.25} Total: 14024 W: 565 L: 463 D: 12996 Ptnml(0-2): 3, 423, 6062, 517, 7 closes https://github.com/official-stockfish/Stockfish/pull/3263 Bench: 4050630
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