Dev Builds » 20190409-1735

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 7. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games Wins Losses Draws Elo
ncm-et-3 08:33:19 1966340 3331 1897 80 1354 +212.61 +/- 9.14
ncm-et-4 08:25:43 1955621 3232 1915 52 1265 +228.3 +/- 9.43
ncm-et-9 08:41:02 1967025 3365 1975 77 1313 +221.92 +/- 9.3
ncm-et-10 08:37:45 1965847 3350 1992 76 1282 +225.97 +/- 9.42
ncm-et-13 08:37:23 1975310 3322 1922 75 1325 +217.85 +/- 9.25
ncm-et-15 08:41:58 1972851 3400 1970 87 1343 +216.76 +/- 9.2
20000 11671 447 7882 +220.48 +/- 3.79

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
77180 ncm-et-4 2019-04-10 09:15 00:34:54 1965997 232 133 5 94 +215.71 +/- 34.86
77179 ncm-et-13 2019-04-10 09:01 00:50:03 1980484 322 186 12 124 +210.09 +/- 30.61
77178 ncm-et-3 2019-04-10 08:58 00:52:24 1962919 331 189 6 136 +216.28 +/- 28.83
77177 ncm-et-10 2019-04-10 08:56 00:54:40 1960622 350 206 6 138 +225.71 +/- 28.69
77176 ncm-et-9 2019-04-10 08:52 00:58:25 1944998 365 220 8 137 +230.59 +/- 28.97
77175 ncm-et-15 2019-04-10 08:49 01:01:42 1971580 400 241 14 145 +223.69 +/- 28.33
77174 ncm-et-4 2019-04-10 07:56 01:18:23 1965998 500 285 4 211 +220.88 +/- 22.85
77173 ncm-et-13 2019-04-10 07:43 01:16:56 1974051 500 295 12 193 +222.92 +/- 24.36
77172 ncm-et-3 2019-04-10 07:40 01:16:55 1961383 500 289 15 196 +213.85 +/- 24.22
77171 ncm-et-10 2019-04-10 07:36 01:18:36 1962015 500 290 13 197 +216.85 +/- 24.1
77170 ncm-et-9 2019-04-10 07:34 01:16:48 1965084 500 305 9 186 +236.51 +/- 24.79
77169 ncm-et-15 2019-04-10 07:31 01:16:54 1967733 500 302 9 189 +233.32 +/- 24.56
77168 ncm-et-4 2019-04-10 06:37 01:17:27 1966305 500 307 11 182 +236.51 +/- 25.14
77167 ncm-et-13 2019-04-10 06:25 01:16:51 1977348 500 299 8 193 +231.21 +/- 24.24
77166 ncm-et-3 2019-04-10 06:24 01:14:52 1970046 500 289 10 201 +218.86 +/- 23.75
77165 ncm-et-10 2019-04-10 06:17 01:17:53 1966159 500 303 10 187 +233.32 +/- 24.74
77164 ncm-et-9 2019-04-10 06:16 01:16:42 1972193 500 297 16 187 +220.88 +/- 24.87
77163 ncm-et-15 2019-04-10 06:13 01:16:25 1975603 500 277 13 210 +204.07 +/- 23.24
77162 ncm-et-4 2019-04-10 05:18 01:18:30 1966001 500 298 5 197 +233.32 +/- 23.84
77161 ncm-et-3 2019-04-10 05:07 01:15:53 1960161 500 286 11 203 +214.85 +/- 23.64
77160 ncm-et-13 2019-04-10 05:06 01:17:35 1964154 500 283 9 208 +213.85 +/- 23.25
77159 ncm-et-10 2019-04-10 04:59 01:17:19 1963225 500 306 11 183 +235.45 +/- 25.07
77158 ncm-et-9 2019-04-10 04:58 01:17:00 1969867 500 286 13 201 +212.86 +/- 23.83
77157 ncm-et-15 2019-04-10 04:57 01:15:21 1980648 500 305 12 183 +233.32 +/- 25.09
77156 ncm-et-4 2019-04-10 04:00 01:16:47 1966305 500 293 9 198 +223.94 +/- 23.92
77155 ncm-et-3 2019-04-10 03:48 01:17:38 1963839 500 285 12 203 +212.86 +/- 23.67
77154 ncm-et-13 2019-04-10 03:47 01:18:22 1970478 500 303 10 187 +233.32 +/- 24.74
77153 ncm-et-10 2019-04-10 03:41 01:16:55 1981262 500 292 13 195 +218.86 +/- 24.24
77152 ncm-et-9 2019-04-10 03:40 01:17:15 1972195 500 293 11 196 +221.9 +/- 24.12
77151 ncm-et-15 2019-04-10 03:39 01:16:59 1964771 500 286 14 200 +211.87 +/- 23.92
77150 ncm-et-4 2019-04-10 02:36 01:22:45 1878245 500 302 8 190 +234.38 +/- 24.46
77149 ncm-et-3 2019-04-10 02:30 01:17:04 1980806 500 292 14 194 +217.85 +/- 24.34
77148 ncm-et-13 2019-04-10 02:26 01:19:06 1985676 500 282 10 208 +211.87 +/- 23.28
77147 ncm-et-10 2019-04-10 02:23 01:17:15 1966422 500 284 15 201 +208.93 +/- 23.88
77146 ncm-et-9 2019-04-10 02:22 01:17:33 1970944 500 283 10 207 +212.86 +/- 23.35
77145 ncm-et-15 2019-04-10 02:20 01:17:29 1970024 500 288 11 201 +216.85 +/- 23.78
77144 ncm-et-4 2019-04-10 01:18 01:16:57 1980498 500 297 10 193 +227.04 +/- 24.3
77143 ncm-et-3 2019-04-10 01:11 01:18:33 1965226 500 267 12 221 +195.51 +/- 22.52
77142 ncm-et-13 2019-04-10 01:07 01:18:30 1974984 500 274 14 212 +200.24 +/- 23.14
77141 ncm-et-10 2019-04-10 01:06 01:15:07 1961227 500 311 8 181 +244.1 +/- 25.14
77140 ncm-et-9 2019-04-10 01:03 01:17:19 1973897 500 291 10 199 +220.88 +/- 23.88
77139 ncm-et-15 2019-04-10 01:02 01:17:08 1979598 500 271 14 215 +197.4 +/- 22.95

Commit

Commit ID ab4b94e1737fcdf9f5174a96e80bbdc985c95267
Author 31m059
Date 2019-04-09 17:35:17 UTC
Raise kingDanger threshold and adjust constant term #2087 The kingDanger term is intended to give a penalty which increases rapidly in the middlegame but less so in the endgame. To this end, the middlegame component is quadratic, and the endgame component is linear. However, this produces unintended consequences for relatively small values of kingDanger: the endgame penalty will exceed the middlegame penalty. This remains true up to kingDanger = 256 (a S(16, 16) penalty), so some of these inaccurate penalties are actually rather large. In this patch, we increase the threshold for applying the kingDanger penalty to eliminate some of this unintended behavior. This was very nearly, but not quite, sufficient to pass on its own. The patch was finally successful by integrating a second kingDanger tweak by @Vizvezdenec, increasing the kingDanger constant term slightly and improving both STC and LTC performance. Where do we go from here? I propose that in the future, any attempts to tune kingDanger coefficients should also consider tuning the kingDanger threshold. The evidence shows clearly that it should not be automatically taken to be zero. Special thanks to @Vizvezdenec for the kingDanger constant tweak. Thanks also to all the approvers and CPU donors who made this possible! STC: LLR: -2.96 (-2.94,2.94) [0.00,4.00] Total: 141225 W: 31239 L: 30846 D: 79140 http://tests.stockfishchess.org/tests/view/5cabbdb20ebc5925cf00b86c LTC: LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 30708 W: 5296 L: 5043 D: 20369 http://tests.stockfishchess.org/tests/view/5cabff760ebc5925cf00c22d Bench: 3445945
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