Dev Builds » 20180414-0636

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 06:03:17 2001863 2387 1095 97 1195 +154.74 +/- 9.63
ncm-et-4 06:03:19 1987918 2384 1114 71 1199 +162.99 +/- 9.54
ncm-et-5 01:47:39 2022793 721 321 23 377 +152.73 +/- 16.95
ncm-et-6 01:47:26 2026308 716 349 17 350 +174.41 +/- 17.67
ncm-et-7 01:47:37 2018579 725 350 15 360 +173.7 +/- 17.34
ncm-et-8 01:47:22 1966619 708 315 19 374 +154.73 +/- 16.92
ncm-et-9 06:02:53 2001798 2404 1136 83 1185 +163.22 +/- 9.65
ncm-et-10 06:02:58 1981290 2377 1151 75 1151 +169.57 +/- 9.8
ncm-et-11 01:47:34 1994096 715 309 13 393 +153.01 +/- 16.25
ncm-et-12 01:47:25 2021488 717 314 22 381 +150.2 +/- 16.8
ncm-et-13 06:02:45 1971324 2325 1065 62 1198 +160.38 +/- 9.49
ncm-et-14 01:47:41 2018639 710 321 23 366 +155.43 +/- 17.25
ncm-et-15 06:02:57 1987263 2390 1085 87 1218 +154.52 +/- 9.49
ncm-et-16 01:47:31 2004633 721 339 13 369 +169.34 +/- 17.0
20000 9264 620 10116 +160.72 +/- 3.28

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
51324 ncm-et-13 2018-08-26 15:05 00:17:01 1987194 108 48 1 59 +162.0 +/- 41.87
51323 ncm-et-10 2018-08-26 14:57 00:24:34 1981224 161 67 6 88 +138.54 +/- 35.05
51322 ncm-et-3 2018-08-26 14:55 00:26:53 1988613 170 74 10 86 +137.56 +/- 36.31
51321 ncm-et-15 2018-08-26 14:54 00:27:41 1946378 175 80 5 90 +159.18 +/- 34.84
51320 ncm-et-4 2018-08-26 14:53 00:28:17 1987981 187 78 5 104 +143.23 +/- 31.85
51319 ncm-et-9 2018-08-26 14:51 00:30:22 1990823 199 88 9 102 +145.95 +/- 33.06
51318 ncm-et-13 2018-08-26 13:43 01:20:18 1929479 500 227 16 257 +156.39 +/- 20.6
51317 ncm-et-3 2018-08-26 13:38 01:16:00 1991140 500 234 25 241 +154.7 +/- 21.66
51316 ncm-et-4 2018-08-26 13:37 01:15:08 1988927 500 232 13 255 +163.21 +/- 20.61
51315 ncm-et-10 2018-08-26 13:37 01:19:06 1933496 500 233 18 249 +159.78 +/- 21.08
51314 ncm-et-15 2018-08-26 13:36 01:16:57 1977630 500 220 22 258 +145.54 +/- 20.7
51313 ncm-et-9 2018-08-26 13:35 01:15:15 1989245 500 238 19 243 +163.21 +/- 21.43
51312 ncm-et-13 2018-08-26 12:24 01:18:10 1940052 500 225 10 265 +159.78 +/- 19.98
51311 ncm-et-4 2018-08-26 12:20 01:15:46 1990033 500 228 9 263 +163.21 +/- 20.05
51310 ncm-et-3 2018-08-26 12:20 01:16:26 1990506 500 233 14 253 +163.21 +/- 20.75
51309 ncm-et-15 2018-08-26 12:20 01:15:14 1980912 500 232 18 250 +158.93 +/- 21.03
51308 ncm-et-10 2018-08-26 12:19 01:16:43 1950091 500 253 12 235 +182.61 +/- 21.69
51307 ncm-et-9 2018-08-26 12:19 01:14:59 1989243 500 245 17 238 +171.02 +/- 21.66
51306 ncm-et-13 2018-08-26 11:03 01:19:43 1923511 500 224 20 256 +150.51 +/- 20.75
51305 ncm-et-9 2018-08-26 11:03 01:14:51 1990665 500 230 13 257 +161.49 +/- 20.51
51304 ncm-et-15 2018-08-26 11:03 01:15:36 1981381 500 236 13 251 +166.66 +/- 20.83
51303 ncm-et-10 2018-08-26 11:03 01:15:07 1980443 500 244 14 242 +172.78 +/- 21.36
51302 ncm-et-4 2018-08-26 11:03 01:16:27 1989560 500 235 14 251 +164.93 +/- 20.86
51301 ncm-et-3 2018-08-26 11:03 01:16:24 1988138 500 228 23 249 +151.35 +/- 21.19
19632 ncm-et-4 2018-04-16 14:04 00:29:10 2021651 197 91 7 99 +158.25 +/- 33.47
19631 ncm-et-9 2018-04-16 14:03 00:30:32 2024427 205 93 8 104 +153.29 +/- 32.67
19630 ncm-et-14 2018-04-16 14:01 00:32:01 2017420 210 103 7 100 +171.53 +/- 33.5
19629 ncm-et-8 2018-04-16 14:01 00:32:04 1946065 208 93 3 112 +160.93 +/- 30.55
19628 ncm-et-3 2018-04-16 14:01 00:32:04 2026719 217 91 4 122 +147.57 +/- 29.09
19627 ncm-et-11 2018-04-16 14:01 00:32:11 1968985 215 96 5 114 +156.92 +/- 30.62
19626 ncm-et-13 2018-04-16 14:01 00:32:38 2023610 217 96 6 115 +153.33 +/- 30.6
19625 ncm-et-16 2018-04-16 14:01 00:32:45 1987940 221 94 3 124 +152.08 +/- 28.73
19624 ncm-et-15 2018-04-16 14:01 00:32:47 2017908 215 98 7 110 +156.92 +/- 31.59
19623 ncm-et-12 2018-04-16 14:00 00:32:54 2021651 217 84 8 125 +127.06 +/- 29.01
19622 ncm-et-10 2018-04-16 14:00 00:32:59 2020673 216 108 4 104 +182.37 +/- 32.46
19621 ncm-et-6 2018-04-16 14:00 00:33:21 2026390 216 105 5 106 +174.09 +/- 32.18
19620 ncm-et-5 2018-04-16 13:59 00:33:44 2021814 221 103 4 114 +167.52 +/- 30.64
19619 ncm-et-7 2018-04-16 13:59 00:33:55 2011587 225 114 3 108 +187.77 +/- 31.71
19618 ncm-et-8 2018-04-16 12:45 01:15:18 1987174 500 222 16 262 +152.18 +/- 20.33
19617 ncm-et-15 2018-04-16 12:45 01:14:42 2019371 500 219 22 259 +144.72 +/- 20.64
19616 ncm-et-9 2018-04-16 12:45 01:16:54 2026390 500 242 17 241 +168.4 +/- 21.49
19615 ncm-et-16 2018-04-16 12:45 01:14:46 2021326 500 245 10 245 +177.22 +/- 21.06
19614 ncm-et-6 2018-04-16 12:45 01:14:05 2026227 500 244 12 244 +174.55 +/- 21.18
19613 ncm-et-13 2018-04-16 12:45 01:14:55 2024100 500 245 9 246 +178.11 +/- 20.97
19612 ncm-et-10 2018-04-16 12:45 01:14:29 2021814 500 246 21 233 +168.4 +/- 22.03
19611 ncm-et-12 2018-04-16 12:45 01:14:31 2021325 500 230 14 256 +160.64 +/- 20.59
19610 ncm-et-7 2018-04-16 12:45 01:13:42 2025572 500 236 12 252 +167.53 +/- 20.74
19609 ncm-et-14 2018-04-16 12:45 01:15:40 2019858 500 218 16 266 +148.85 +/- 20.13
19608 ncm-et-11 2018-04-16 12:45 01:15:23 2019208 500 213 8 279 +151.35 +/- 19.19
19607 ncm-et-4 2018-04-16 12:45 01:18:31 1949360 500 250 23 227 +170.15 +/- 22.41
19606 ncm-et-3 2018-04-16 12:45 01:15:30 2026064 500 235 21 244 +158.93 +/- 21.42
19605 ncm-et-5 2018-04-16 12:44 01:13:55 2023773 500 218 19 263 +146.36 +/- 20.36

Commit

Commit ID ae0bb6dc2b490a8879279ee741d20fcdbbfe2fd3
Author syzygy1
Date 2018-04-14 06:36:41 UTC
Fix reported DTZ for mate-in-1-ply positions This corrects a bug in Tablebases::probe_dtz() which sometimes causes a higher DTZ value to be returned for the position one ply before mate than for the position two plies before mate. The problem was reported by Kolja Kühn here: http://talkchess.com/forum/viewtopic.php?p=757497#757497 It is explained here: http://talkchess.com/forum/viewtopic.php?p=757506#757506 I have also adjusted some comments to make clear that probe_dtz() returns -1 for a mate position. Closes https://github.com/official-stockfish/Stockfish/pull/1546 No functional change
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