Dev Builds » 20191002-1137

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 08:29:01 1971080 3348 2037 59 1252 +235.87 +/- 9.52
ncm-et-4 08:27:21 1977149 3362 2026 54 1282 +233.62 +/- 9.39
ncm-et-9 08:28:05 1971670 3326 1989 56 1281 +230.78 +/- 9.39
ncm-et-10 08:28:40 1967080 3300 1943 60 1297 +225.28 +/- 9.33
ncm-et-13 08:28:36 1976484 3340 2009 77 1254 +229.35 +/- 9.54
ncm-et-15 08:28:27 1964849 3324 2020 76 1228 +232.71 +/- 9.65
20000 12024 382 7594 +231.26 +/- 3.86

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
98356 ncm-et-10 2019-10-03 03:09 00:46:25 1961232 300 176 5 119 +224.97 +/- 30.89
98355 ncm-et-9 2019-10-03 03:07 00:49:02 1968931 326 205 5 116 +248.25 +/- 31.48
98354 ncm-et-15 2019-10-03 03:06 00:49:48 1966930 324 202 3 119 +248.64 +/- 30.88
98353 ncm-et-13 2019-10-03 03:03 00:52:15 1976226 340 213 5 122 +247.28 +/- 30.66
98352 ncm-et-3 2019-10-03 03:03 00:52:34 1968492 348 191 8 149 +203.04 +/- 27.52
98351 ncm-et-4 2019-10-03 03:00 00:55:30 1967848 362 210 5 147 +223.07 +/- 27.65
98350 ncm-et-10 2019-10-03 01:51 01:17:14 1963844 500 290 3 207 +227.04 +/- 23.07
98349 ncm-et-9 2019-10-03 01:50 01:15:41 1966615 500 300 9 191 +231.21 +/- 24.42
98348 ncm-et-15 2019-10-03 01:48 01:16:24 1978600 500 301 7 192 +234.38 +/- 24.28
98347 ncm-et-13 2019-10-03 01:46 01:16:06 1969409 500 300 10 190 +230.16 +/- 24.52
98346 ncm-et-3 2019-10-03 01:46 01:15:32 1969561 500 312 5 183 +248.53 +/- 24.87
98345 ncm-et-4 2019-10-03 01:43 01:16:27 1985960 500 291 9 200 +221.9 +/- 23.78
98344 ncm-et-9 2019-10-03 00:32 01:16:36 1988820 500 301 8 191 +233.32 +/- 24.39
98343 ncm-et-10 2019-10-03 00:32 01:18:16 1962152 500 289 10 201 +218.86 +/- 23.75
98342 ncm-et-15 2019-10-03 00:30 01:17:01 1939002 500 308 16 176 +232.26 +/- 25.7
98341 ncm-et-13 2019-10-03 00:29 01:16:07 1977323 500 293 14 193 +218.86 +/- 24.41
98340 ncm-et-3 2019-10-03 00:28 01:17:15 1969106 500 288 9 203 +218.86 +/- 23.58
98339 ncm-et-4 2019-10-03 00:26 01:15:08 1984251 500 303 10 187 +233.32 +/- 24.74
98338 ncm-et-10 2019-10-02 23:16 01:14:38 1971964 500 307 7 186 +240.82 +/- 24.72
98337 ncm-et-9 2019-10-02 23:15 01:16:16 1974358 500 299 7 194 +232.26 +/- 24.13
98336 ncm-et-15 2019-10-02 23:13 01:16:28 1964770 500 294 10 196 +223.94 +/- 24.09
98335 ncm-et-3 2019-10-02 23:11 01:15:30 1976238 500 305 12 183 +233.32 +/- 25.09
98334 ncm-et-13 2019-10-02 23:11 01:17:18 1967869 500 287 13 200 +213.85 +/- 23.9
98333 ncm-et-4 2019-10-02 23:10 01:14:57 1975299 500 301 11 188 +230.16 +/- 24.69
98332 ncm-et-9 2019-10-02 21:58 01:16:16 1966779 500 301 9 190 +232.26 +/- 24.49
98331 ncm-et-10 2019-10-02 21:57 01:17:47 1970491 500 279 13 208 +206.01 +/- 23.37
98330 ncm-et-15 2019-10-02 21:55 01:16:32 1970793 500 306 10 184 +236.51 +/- 24.97
98329 ncm-et-4 2019-10-02 21:55 01:14:46 1982430 500 296 11 193 +224.97 +/- 24.33
98328 ncm-et-13 2019-10-02 21:54 01:15:47 1985691 500 305 16 179 +229.12 +/- 25.47
98327 ncm-et-3 2019-10-02 21:53 01:17:21 1979816 500 327 10 163 +259.91 +/- 26.67
98326 ncm-et-10 2019-10-02 20:39 01:16:47 1978930 500 305 8 187 +237.58 +/- 24.68
98325 ncm-et-9 2019-10-02 20:39 01:17:22 1971888 500 308 6 186 +243.0 +/- 24.68
98324 ncm-et-15 2019-10-02 20:38 01:16:25 1966468 500 308 11 181 +237.58 +/- 25.22
98323 ncm-et-4 2019-10-02 20:37 01:15:59 1965848 500 316 4 180 +254.16 +/- 25.06
98322 ncm-et-13 2019-10-02 20:37 01:15:53 1991784 500 312 7 181 +246.3 +/- 25.1
98321 ncm-et-3 2019-10-02 20:36 01:15:41 1966475 500 317 8 175 +250.77 +/- 25.61
98320 ncm-et-4 2019-10-02 19:22 01:14:34 1978413 500 309 4 187 +246.3 +/- 24.52
98319 ncm-et-9 2019-10-02 19:21 01:16:52 1964305 500 275 12 213 +203.11 +/- 23.02
98318 ncm-et-13 2019-10-02 19:21 01:15:10 1967088 500 299 12 189 +227.04 +/- 24.65
98317 ncm-et-15 2019-10-02 19:21 01:15:49 1967385 500 301 19 180 +221.9 +/- 25.43
98316 ncm-et-10 2019-10-02 19:21 01:17:33 1960949 500 297 14 189 +222.92 +/- 24.69
98315 ncm-et-3 2019-10-02 19:20 01:15:08 1967873 500 297 7 196 +230.16 +/- 23.99

Commit

Commit ID e6f4b5f46344d638c5e3b27cdbc966899e80e8d6
Author Moez Jellouli
Date 2019-10-02 11:37:00 UTC
More accurate pawn attack span definition Tweak the pawn attack span for backward pawns and the zone behind opponent opposing pawns. This is important in positional play and one of weaknesses of the engine in recent high level games. STC LLR: -2.95 (-2.94,2.94) [0.50,4.50] Total: 66843 W: 14884 L: 14717 D: 37242 http://tests.stockfishchess.org/tests/view/5d8dcb1b0ebc590f3beb2956 LTC LLR: 2.96 (-2.94,2.94) [0.00,3.50] Total: 77699 W: 12993 L: 12602 D: 52104 http://tests.stockfishchess.org/tests/view/5d8de9bc0ebc590f3beb3d00 See discussion in https://github.com/official-stockfish/Stockfish/pull/2332 Bench: 4012371
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