Dev Builds » 20180227-1742

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 06:39:58 2002146 2583 1196 97 1290 +157.86 +/- 9.25
ncm-et-4 06:38:46 2000525 2578 1155 93 1330 +152.16 +/- 9.06
ncm-et-5 02:18:29 2021255 902 397 33 472 +148.66 +/- 15.19
ncm-et-6 02:21:36 2025490 921 392 37 492 +141.21 +/- 14.86
ncm-et-7 02:19:39 2007925 899 412 27 460 +159.04 +/- 15.37
ncm-et-8 02:18:46 2009457 902 393 23 486 +151.43 +/- 14.77
ncm-et-9 06:37:11 2000700 2580 1172 95 1313 +154.47 +/- 9.14
ncm-et-10 06:48:51 1970542 2590 1175 88 1327 +155.41 +/- 9.07
ncm-et-11 02:19:55 2005635 909 421 30 458 +159.85 +/- 15.47
ncm-et-12 02:15:49 2012775 881 391 31 459 +150.77 +/- 15.4
ncm-et-13 06:51:25 1962957 2588 1188 86 1314 +158.0 +/- 9.12
ncm-et-15 04:19:41 1982323 1667 728 71 868 +144.77 +/- 11.24
20000 9020 711 10269 +153.63 +/- 3.26

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
53244 ncm-et-3 2018-09-10 22:45 00:25:48 1989086 167 70 6 91 +140.31 +/- 34.45
53243 ncm-et-15 2018-09-10 22:45 00:26:12 1980130 167 72 8 87 +140.31 +/- 35.78
53242 ncm-et-10 2018-09-10 22:45 00:26:13 1979505 170 80 5 85 +164.58 +/- 36.04
53241 ncm-et-9 2018-09-10 22:45 00:26:19 1988927 164 78 10 76 +153.29 +/- 39.02
53240 ncm-et-4 2018-09-10 22:45 00:25:59 1988769 166 70 8 88 +136.36 +/- 35.48
53239 ncm-et-13 2018-09-10 22:45 00:26:09 1967872 166 77 6 83 +158.81 +/- 36.63
53196 ncm-et-13 2018-09-10 12:46 01:19:26 1961347 500 233 15 252 +162.35 +/- 20.84
53195 ncm-et-10 2018-09-10 12:42 01:20:56 1937751 500 229 20 251 +154.7 +/- 21.02
53194 ncm-et-3 2018-09-10 12:38 01:17:17 1991772 500 238 23 239 +159.78 +/- 21.74
53193 ncm-et-15 2018-09-10 12:38 01:17:05 1981382 500 211 24 265 +136.56 +/- 20.38
53192 ncm-et-9 2018-09-10 12:37 01:15:07 1987509 500 219 13 268 +152.18 +/- 19.93
53191 ncm-et-4 2018-09-10 12:37 01:16:49 1989401 500 208 27 265 +131.74 +/- 20.44
53190 ncm-et-13 2018-09-10 11:21 01:23:08 1869222 500 223 15 262 +153.86 +/- 20.3
53189 ncm-et-10 2018-09-10 11:21 01:19:44 1946133 500 222 9 269 +158.08 +/- 19.74
53188 ncm-et-3 2018-09-10 11:19 01:17:47 1990822 500 227 18 255 +154.7 +/- 20.76
53187 ncm-et-9 2018-09-10 11:18 01:17:11 1989717 500 228 20 252 +153.86 +/- 20.97
53186 ncm-et-4 2018-09-10 11:18 01:17:09 1989558 500 234 19 247 +159.78 +/- 21.21
53185 ncm-et-15 2018-09-10 11:18 01:18:20 1983890 500 211 16 273 +143.07 +/- 19.77
53184 ncm-et-3 2018-09-10 09:59 01:18:38 1989400 500 230 19 251 +156.39 +/- 21.0
53183 ncm-et-10 2018-09-10 09:59 01:20:31 1922910 500 228 18 254 +155.54 +/- 20.81
53182 ncm-et-9 2018-09-10 09:59 01:18:08 1990664 500 232 13 255 +163.21 +/- 20.61
53181 ncm-et-15 2018-09-10 09:59 01:18:04 1983890 500 234 23 243 +156.39 +/- 21.52
53180 ncm-et-13 2018-09-10 09:59 01:21:05 1929796 500 243 17 240 +169.27 +/- 21.55
53179 ncm-et-4 2018-09-10 09:59 01:18:16 1986405 500 206 12 282 +142.26 +/- 19.18
3599 ncm-et-12 2018-02-27 20:16 00:59:25 2009747 381 179 17 185 +157.74 +/- 24.66
3598 ncm-et-8 2018-02-27 20:14 01:02:00 2021488 402 171 15 216 +142.28 +/- 22.38
3597 ncm-et-5 2018-02-27 20:13 01:02:15 2023448 402 172 16 214 +142.28 +/- 22.56
3596 ncm-et-4 2018-02-27 20:13 01:02:27 2023283 412 211 13 188 +181.97 +/- 24.46
3595 ncm-et-7 2018-02-27 20:13 01:03:09 1990116 399 175 13 211 +149.69 +/- 22.64
3594 ncm-et-9 2018-02-27 20:12 01:03:11 2023609 416 205 24 187 +161.96 +/- 24.82
3593 ncm-et-11 2018-02-27 20:12 01:03:33 1992711 409 188 10 211 +162.01 +/- 22.6
3592 ncm-et-3 2018-02-27 20:12 01:03:57 2025245 416 190 10 216 +160.93 +/- 22.3
3591 ncm-et-10 2018-02-27 20:11 01:04:28 2019533 420 185 16 219 +148.18 +/- 22.36
3590 ncm-et-13 2018-02-27 20:11 01:04:28 2023772 422 191 12 219 +157.31 +/- 22.23
3589 ncm-et-6 2018-02-27 20:10 01:05:13 2025081 421 183 20 218 +141.92 +/- 22.55
3588 ncm-et-12 2018-02-27 18:59 01:16:24 2015804 500 212 14 274 +145.54 +/- 19.65
3587 ncm-et-5 2018-02-27 18:56 01:16:14 2019062 500 225 17 258 +153.86 +/- 20.57
3586 ncm-et-8 2018-02-27 18:56 01:16:46 1997427 500 222 8 270 +158.93 +/- 19.65
3585 ncm-et-7 2018-02-27 18:55 01:16:30 2025735 500 237 14 249 +166.66 +/- 20.97
3584 ncm-et-11 2018-02-27 18:55 01:16:22 2018559 500 233 20 247 +158.08 +/- 21.24
3583 ncm-et-3 2018-02-27 18:54 01:16:31 2026556 500 241 21 238 +164.07 +/- 21.75
3582 ncm-et-4 2018-02-27 18:54 01:18:06 2025736 500 226 14 260 +157.24 +/- 20.38
3581 ncm-et-9 2018-02-27 18:54 01:17:15 2023774 500 210 15 275 +143.07 +/- 19.63
3580 ncm-et-10 2018-02-27 18:53 01:16:59 2017420 500 231 20 249 +156.39 +/- 21.13
3579 ncm-et-6 2018-02-27 18:53 01:16:23 2025899 500 209 17 274 +140.62 +/- 19.74
3578 ncm-et-13 2018-02-27 18:53 01:17:09 2025735 500 221 21 258 +147.19 +/- 20.67

Commit

Commit ID cccbecb6f8de4e34d8856f121760b74185987d8e
Author Stefan Geschwentner
Date 2018-02-27 17:42:59 UTC
Stat score initialization: grandchildren This is the sequel of the previous patch, we now let the parent node initialize stat score to zero once for all grandchildren. Initialize statScore to zero for the grandchildren of the current position. So statScore is shared between all grandchildren and only the first grandchild starts with statScore = 0. Later grandchildren start with the last calculated statScore of the previous grandchild. This influences the reduction rules in LMR which are based on the statScore of parent position. Tests results against the previous patch: STC: LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 23676 W: 5417 L: 5157 D: 13102 http://tests.stockfishchess.org/tests/view/5a9423a90ebc590297cc8a46 LTC: LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 35485 W: 6168 L: 5898 D: 23419 http://tests.stockfishchess.org/tests/view/5a9435550ebc590297cc8a54 Bench: 5643520
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