Dev Builds » 20240515-1415

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 14. 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 11:42:23 1202348 4008 1782 302 1924 +134.65 +/- 4.82 0 42 505 1392 65 +305.51 +/- 15.18
ncm-dbt-02 11:39:32 1197104 3974 1792 294 1888 +137.76 +/- 4.76 0 33 489 1399 66 +315.84 +/- 15.42
ncm-dbt-03 11:41:42 1229896 4024 1808 302 1914 +136.67 +/- 4.7 0 31 509 1407 65 +312.62 +/- 15.1
ncm-dbt-05 11:40:05 1196752 3990 1752 299 1939 +132.61 +/- 4.93 0 48 515 1363 69 +297.1 +/- 15.03
ncm-dbt-06 11:41:55 1238117 4004 1763 330 1911 +130.1 +/- 4.86 1 47 529 1368 57 +293.16 +/- 14.83
20000 8897 1527 9576 +134.35 +/- 2.15 1 201 2547 6929 322 +304.69 +/- 6.75

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
368702 ncm-dbt-06 1252760 4 2 0 2 +190.27 +/- 27.79 0 0 0 2 0 +1199.83 +/- 312.71
368701 ncm-dbt-01 1181074 8 2 2 4 0.0 +/- 8.51 0 0 4 0 0 0.0 +/- 7.61
368700 ncm-dbt-03 1266348 24 10 4 10 +88.7 +/- 52.98 0 0 6 6 0 +190.79 +/- 144.59
368699 ncm-dbt-02 1198326 474 211 30 233 +139.75 +/- 12.9 0 3 55 174 5 +332.25 +/- 46.61
368698 ncm-dbt-05 1196224 490 212 39 239 +128.18 +/- 14.81 0 5 75 152 13 +271.21 +/- 39.61
368697 ncm-dbt-06 1245419 500 212 45 243 +120.67 +/- 13.84 0 7 75 162 6 +265.78 +/- 39.69
368696 ncm-dbt-01 1207074 500 219 43 238 +127.76 +/- 13.02 0 7 62 179 2 +298.62 +/- 43.77
368695 ncm-dbt-03 1231964 500 220 31 249 +138.18 +/- 12.33 0 4 56 187 3 +333.32 +/- 46.21
368694 ncm-dbt-02 1195091 500 230 34 236 +143.89 +/- 13.31 0 4 55 182 9 +336.46 +/- 46.65
368693 ncm-dbt-05 1197411 500 220 35 245 +134.95 +/- 12.84 0 5 59 182 4 +318.25 +/- 44.96
368692 ncm-dbt-01 1182035 500 234 35 231 +146.36 +/- 14.54 0 6 53 177 14 +330.23 +/- 47.44
368691 ncm-dbt-06 1232266 500 222 45 233 +128.55 +/- 13.38 0 7 63 176 4 +295.94 +/- 43.42
368690 ncm-dbt-03 1237135 500 220 50 230 +123.02 +/- 13.47 0 6 73 166 5 +275.45 +/- 40.24
368689 ncm-dbt-02 1197234 500 217 41 242 +127.76 +/- 13.21 0 3 75 165 7 +285.49 +/- 39.5
368688 ncm-dbt-05 1197593 500 219 38 243 +131.74 +/- 15.04 0 9 63 166 12 +285.49 +/- 43.31
368687 ncm-dbt-06 1245144 500 228 46 226 +132.54 +/- 14.01 0 7 62 173 8 +298.62 +/- 43.77
368686 ncm-dbt-01 1181911 500 221 36 243 +134.95 +/- 13.22 0 3 67 172 8 +306.84 +/- 41.99
368685 ncm-dbt-03 1229649 500 221 39 240 +132.54 +/- 13.1 0 4 66 174 6 +304.07 +/- 42.38
368684 ncm-dbt-02 1196822 500 231 27 242 +150.51 +/- 12.18 0 0 55 186 9 +363.19 +/- 46.32
368683 ncm-dbt-05 1195626 500 220 41 239 +130.14 +/- 14.74 0 8 66 165 11 +282.94 +/- 42.37
368682 ncm-dbt-01 1244961 500 223 33 244 +138.99 +/- 13.48 0 2 67 170 11 +312.48 +/- 41.9
368681 ncm-dbt-06 1225510 500 224 30 246 +142.25 +/- 12.78 0 1 63 177 9 +330.23 +/- 43.2
368680 ncm-dbt-03 1198996 500 228 41 231 +136.56 +/- 13.92 0 2 72 163 13 +298.62 +/- 40.29
368679 ncm-dbt-02 1199337 500 223 42 235 +131.74 +/- 14.2 0 4 73 161 12 +285.49 +/- 40.16
368678 ncm-dbt-06 1227799 500 218 41 241 +128.55 +/- 14.26 0 9 62 172 7 +288.06 +/- 43.65
368677 ncm-dbt-01 1217516 500 227 36 237 +139.81 +/- 13.83 0 7 53 182 8 +324.17 +/- 47.35
368676 ncm-dbt-05 1197409 500 224 43 233 +131.74 +/- 13.67 0 6 64 173 7 +298.62 +/- 43.1
368675 ncm-dbt-03 1221787 500 234 28 238 +152.18 +/- 13.76 0 3 52 181 14 +352.8 +/- 48.05
368674 ncm-dbt-06 1248564 500 220 39 241 +131.74 +/- 13.67 0 5 67 170 8 +295.94 +/- 42.08
368673 ncm-dbt-02 1194331 500 230 35 235 +143.07 +/- 13.54 0 5 54 182 9 +333.32 +/- 47.06
368672 ncm-dbt-03 1205920 500 233 36 231 +144.71 +/- 13.28 0 4 54 183 9 +339.63 +/- 47.1
368671 ncm-dbt-05 1197235 500 222 30 248 +140.62 +/- 13.8 0 4 61 174 11 +318.25 +/- 44.18
368670 ncm-dbt-01 1212564 500 216 38 246 +129.35 +/- 13.72 0 6 67 170 7 +290.66 +/- 42.08
368669 ncm-dbt-06 1226264 500 219 48 233 +123.81 +/- 14.81 1 8 68 165 8 +273.0 +/- 41.7
368668 ncm-dbt-02 1196531 500 219 47 234 +124.6 +/- 14.96 0 11 65 165 9 +270.57 +/- 42.52
368667 ncm-dbt-03 1237881 500 213 36 251 +128.55 +/- 13.01 0 3 73 168 6 +290.66 +/- 40.08
368666 ncm-dbt-05 1197172 500 213 43 244 +123.02 +/- 13.99 0 8 70 166 6 +273.0 +/- 41.13
368665 ncm-dbt-01 1225060 500 223 42 235 +131.74 +/- 13.67 0 6 64 173 7 +298.62 +/- 43.1
368664 ncm-dbt-06 1239327 500 218 36 246 +132.54 +/- 13.1 0 3 69 171 7 +301.33 +/- 41.33
368663 ncm-dbt-02 1199162 500 231 38 231 +141.44 +/- 12.61 0 3 57 184 6 +336.46 +/- 45.77
368662 ncm-dbt-05 1195348 500 222 30 248 +140.62 +/- 12.44 0 3 57 185 5 +336.46 +/- 45.77
368661 ncm-dbt-03 1239386 500 229 37 234 +140.62 +/- 13.62 0 5 57 179 9 +324.17 +/- 45.77
368660 ncm-dbt-01 1168944 500 217 37 246 +130.94 +/- 13.69 0 5 68 169 8 +293.29 +/- 41.75

Commit

Commit ID 9e45644c50e4650e4603ddef3e8147a8daf3a790
Author Michael Chaly
Date 2024-05-15 14:15:15 UTC
Add extra bonus to pawn history for a move that caused a fail low Basically the same idea as it is for continuation/main history, but it has some tweaks. 1) it has * 2 multiplier for bonus instead of full/half bonus - for whatever reason this seems to work better; 2) attempts with this type of big bonuses scaled somewhat poorly (or were unlucky at longer time controls), but after measuring the fact that average value of pawn history in LMR after adding this bonuses increased by substantial number (for multiplier 1,5 it increased by smth like 400~ from 8192 cap) attempts were made to make default pawn history negative to compensate it - and version with multiplier 2 and initial fill value -900 passed. Passed STC: https://tests.stockfishchess.org/tests/view/66424815f9f4e8fc783cba59 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 115008 W: 30001 L: 29564 D: 55443 Ptnml(0-2): 432, 13629, 28903, 14150, 390 Passed LTC: https://tests.stockfishchess.org/tests/view/6642f5437134c82f3f7a3ffa LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 56448 W: 14432 L: 14067 D: 27949 Ptnml(0-2): 36, 6268, 15254, 6627, 39 Bench: 1857237
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