Dev Builds » 20180403-2207

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 06:02:16 2001001 2398 1115 81 1202 +160.29 +/- 9.56
ncm-et-4 06:01:31 1999849 2395 1173 63 1159 +174.31 +/- 9.73
ncm-et-5 01:47:18 2022307 716 323 19 374 +157.48 +/- 16.95
ncm-et-6 01:46:10 2024272 707 327 21 359 +160.99 +/- 17.42
ncm-et-7 01:46:37 2024917 707 351 20 336 +176.4 +/- 18.16
ncm-et-8 01:48:43 2009698 719 318 16 385 +155.56 +/- 16.57
ncm-et-9 06:01:54 2000538 2399 1087 76 1236 +156.15 +/- 9.37
ncm-et-10 06:02:44 1969578 2356 1088 76 1192 +159.59 +/- 9.58
ncm-et-11 01:47:26 2013781 713 326 14 373 +163.03 +/- 16.87
ncm-et-12 01:48:41 2011476 717 321 28 368 +150.78 +/- 17.28
ncm-et-13 06:01:08 1973170 2335 1059 78 1198 +155.6 +/- 9.54
ncm-et-14 01:49:12 2018477 732 336 24 372 +158.18 +/- 17.15
ncm-et-15 06:02:47 1995562 2383 1140 63 1180 +169.25 +/- 9.61
ncm-et-16 01:48:50 2018802 723 340 14 369 +168.79 +/- 17.03
20000 9304 593 10103 +162.16 +/- 3.28

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
51444 ncm-et-13 2018-08-27 19:04 00:20:29 1988298 133 56 5 72 +140.4 +/- 38.88
51443 ncm-et-10 2018-08-27 19:02 00:22:24 1952572 141 64 6 71 +151.91 +/- 39.75
51442 ncm-et-15 2018-08-27 18:58 00:27:06 1983890 175 79 3 93 +161.62 +/- 33.73
51441 ncm-et-3 2018-08-27 18:57 00:27:21 1988454 178 78 7 93 +146.73 +/- 34.42
51440 ncm-et-4 2018-08-27 18:57 00:27:18 1989716 186 90 4 92 +173.83 +/- 34.48
51439 ncm-et-9 2018-08-27 18:57 00:27:47 1989085 187 80 10 97 +136.7 +/- 33.98
51438 ncm-et-13 2018-08-27 17:45 01:18:07 1937281 500 221 8 271 +158.08 +/- 19.6
51437 ncm-et-10 2018-08-27 17:45 01:16:44 1934625 500 240 10 250 +172.78 +/- 20.78
51436 ncm-et-3 2018-08-27 17:41 01:15:28 1990508 500 241 16 243 +168.4 +/- 21.36
51435 ncm-et-15 2018-08-27 17:41 01:16:01 1981851 500 253 22 225 +173.67 +/- 22.51
51434 ncm-et-9 2018-08-27 17:40 01:15:35 1987824 500 233 14 253 +163.21 +/- 20.75
51433 ncm-et-4 2018-08-27 17:40 01:16:19 1989243 500 260 11 229 +189.92 +/- 22.01
51432 ncm-et-10 2018-08-27 16:25 01:18:42 1939807 500 233 12 255 +164.93 +/- 20.58
51431 ncm-et-15 2018-08-27 16:23 01:16:11 1984990 500 255 9 236 +187.16 +/- 21.53
51430 ncm-et-3 2018-08-27 16:23 01:16:25 1988139 500 240 14 246 +169.27 +/- 21.13
51429 ncm-et-4 2018-08-27 16:23 01:15:24 1992247 500 248 15 237 +175.44 +/- 21.67
51428 ncm-et-13 2018-08-27 16:23 01:20:52 1877225 500 231 21 248 +155.54 +/- 21.2
51427 ncm-et-9 2018-08-27 16:23 01:16:13 1984990 500 220 22 258 +145.54 +/- 20.7
51426 ncm-et-10 2018-08-27 15:07 01:16:51 1952047 500 228 16 256 +157.24 +/- 20.65
51425 ncm-et-3 2018-08-27 15:07 01:15:33 1989400 500 224 17 259 +153.02 +/- 20.52
51424 ncm-et-9 2018-08-27 15:07 01:15:09 1990348 500 232 16 252 +160.64 +/- 20.86
51423 ncm-et-15 2018-08-27 15:07 01:15:40 1983734 500 225 9 266 +160.64 +/- 19.89
51422 ncm-et-13 2018-08-27 15:07 01:15:26 1987036 500 228 21 251 +153.02 +/- 21.04
51421 ncm-et-4 2018-08-27 15:07 01:15:40 1988139 500 225 16 259 +154.7 +/- 20.49
15375 ncm-et-6 2018-04-04 18:10 00:30:40 2021489 207 90 6 111 +149.6 +/- 31.11
15374 ncm-et-4 2018-04-04 18:10 00:30:58 2024101 209 103 8 98 +170.39 +/- 33.99
15373 ncm-et-13 2018-04-04 18:09 00:31:20 2025408 202 95 7 100 +162.2 +/- 33.36
15372 ncm-et-7 2018-04-04 18:09 00:31:46 2024426 207 108 5 94 +189.73 +/- 34.55
15371 ncm-et-9 2018-04-04 18:09 00:31:47 2025902 212 95 6 111 +155.46 +/- 31.23
15370 ncm-et-15 2018-04-04 18:08 00:32:09 2017259 208 83 7 118 +133.1 +/- 29.91
15369 ncm-et-5 2018-04-04 18:08 00:32:24 2021332 216 108 2 106 +186.59 +/- 31.77
15368 ncm-et-11 2018-04-04 18:08 00:32:34 2012088 213 98 6 109 +160.61 +/- 31.64
15367 ncm-et-10 2018-04-04 18:08 00:32:28 2017422 215 107 8 100 +172.99 +/- 33.66
15366 ncm-et-8 2018-04-04 18:07 00:33:30 2021977 219 98 4 117 +159.45 +/- 30.04
15365 ncm-et-12 2018-04-04 18:07 00:33:40 2001138 217 97 12 108 +143.77 +/- 32.39
15364 ncm-et-3 2018-04-04 18:07 00:33:44 2024590 220 97 7 116 +150.97 +/- 30.59
15363 ncm-et-16 2018-04-04 18:07 00:33:48 2018070 223 105 5 113 +167.72 +/- 30.98
15362 ncm-et-14 2018-04-04 18:06 00:34:44 2019696 232 106 10 116 +152.93 +/- 31.06
15361 ncm-et-6 2018-04-04 16:54 01:15:30 2027055 500 237 15 248 +165.8 +/- 21.05
15360 ncm-et-13 2018-04-04 16:53 01:14:54 2023774 500 228 16 256 +157.24 +/- 20.65
15359 ncm-et-7 2018-04-04 16:53 01:14:51 2025408 500 243 15 242 +171.02 +/- 21.38
15358 ncm-et-4 2018-04-04 16:53 01:15:52 2015648 500 247 9 244 +179.9 +/- 21.08
15357 ncm-et-9 2018-04-04 16:53 01:15:23 2025082 500 227 8 265 +163.21 +/- 19.91
15356 ncm-et-5 2018-04-04 16:52 01:14:54 2023283 500 215 17 268 +145.54 +/- 20.05
15355 ncm-et-11 2018-04-04 16:52 01:14:52 2015475 500 228 8 264 +164.07 +/- 19.96
15354 ncm-et-3 2018-04-04 16:52 01:13:45 2024917 500 235 20 245 +159.78 +/- 21.34
15353 ncm-et-15 2018-04-04 16:52 01:15:40 2021651 500 245 13 242 +174.55 +/- 21.33
15352 ncm-et-10 2018-04-04 16:52 01:15:35 2020999 500 216 24 260 +140.62 +/- 20.63
15351 ncm-et-8 2018-04-04 16:51 01:15:13 1997420 500 220 12 268 +153.86 +/- 19.9
15350 ncm-et-12 2018-04-04 16:51 01:15:01 2021814 500 224 16 260 +153.86 +/- 20.44
15349 ncm-et-16 2018-04-04 16:51 01:15:02 2019534 500 235 9 256 +169.27 +/- 20.42
15348 ncm-et-14 2018-04-04 16:50 01:14:28 2017258 500 230 14 256 +160.64 +/- 20.59

Commit

Commit ID 04a228f9c83dafde1953e43b1906fc0929832976
Author Alain SAVARD
Date 2018-04-03 22:07:40 UTC
Remove the Queen from the mobility area of minor pieces In master, we already remove the King from the mobility area of minor pieces because the King simply stands in the way of other pieces, and since opponent cannot capture the King, any piece which "protects" the King cannot recapture. Similarly, this patch introduces the idea that it is rarely a need for a Queen to be "protected" by a minor (unless it is attacked only by a Queen, in fact). We used to have a LoosePiece bonus, and in a similar vein the Queen was excluded from that penalty. Idea came when reviewing an old game of Kholmov. He was a very good midgame player, but in the opening his misplace his Queen (and won in the end :-) : http://www.chessgames.com/perl/chessgame?gid=1134645 Both white queen moves 10.Qd3 and 13.Qb3 are in the way of some minor piece. I would prefer to not give a bishop mobility bonus at move 10 for the square d3, or later a knight mobility bonus at move 13 for the square b3. And the textbook move is 19.Qe3! which prepares 20.Nb3. This short game sample shows how much a queen can be "in the way" of minor pieces. STC http://tests.stockfishchess.org/tests/view/5ac2c15f0ebc591746423fa3 LLR: 2.96 (-2.94,2.94) [0.00,5.00] Total: 22066 W: 4561 L: 4330 D: 13175 LTC http://tests.stockfishchess.org/tests/view/5ac2d6500ebc591746423faf LLR: 2.96 (-2.94,2.94) [0.00,5.00] Total: 25871 W: 3953 L: 3738 D: 18180 Closes https://github.com/official-stockfish/Stockfish/pull/1532 Ideas for future work in this area: • tweak some more mobility areas for other piece type. • construct a notion of global mobility for the whole piece set. • bad bishops. Bench: 4989125
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