Dev Builds » 20130613-1805

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 06:08:08 1983218 2534 63 1566 905 -237.12 +/- 11.27
ncm-et-4 06:08:08 1984676 2527 78 1561 888 -233.78 +/- 11.4
ncm-et-5 02:03:37 2002355 866 15 541 310 -244.86 +/- 19.2
ncm-et-6 02:03:33 2023201 875 20 538 317 -236.51 +/- 19.03
ncm-et-7 02:03:45 2025736 853 24 523 306 -232.79 +/- 19.42
ncm-et-9 05:23:05 1988881 2179 52 1350 777 -238.49 +/- 12.16
ncm-et-10 06:08:22 1978705 2509 79 1554 876 -234.32 +/- 11.49
ncm-et-11 00:01:55 2020186 11 1 6 4 -170.39 +/- 201.61
ncm-et-12 02:03:28 2008380 845 16 545 284 -255.32 +/- 20.14
ncm-et-13 06:08:22 1988291 2546 59 1596 891 -242.84 +/- 11.36
ncm-et-14 02:03:57 2019208 845 20 536 289 -246.66 +/- 19.99
ncm-et-15 06:08:23 1985263 2551 54 1599 898 -243.9 +/- 11.3
ncm-et-16 02:03:59 2020266 859 22 541 296 -243.11 +/- 19.76
20000 503 12456 7041 -239.55 +/- 4.04

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
107495 ncm-et-10 2019-12-13 14:06 00:21:07 1963244 150 3 96 51 -251.89 +/- 48.07
107494 ncm-et-9 2019-12-13 14:05 00:22:17 1970804 149 3 97 49 -258.1 +/- 49.14
107493 ncm-et-3 2019-12-13 14:02 00:25:03 1961384 171 3 108 60 -248.55 +/- 44.1
107492 ncm-et-4 2019-12-13 14:02 00:25:15 1966460 168 4 109 55 -254.73 +/- 46.37
107491 ncm-et-15 2019-12-13 14:01 00:25:57 1966626 175 1 114 60 -266.8 +/- 43.79
107490 ncm-et-13 2019-12-13 13:59 00:27:44 1967385 187 3 119 65 -252.07 +/- 42.32
107489 ncm-et-9 2019-12-13 12:51 01:13:11 1970027 500 7 323 170 -258.75 +/- 25.99
107488 ncm-et-10 2019-12-13 12:50 01:15:20 1952216 500 22 312 166 -230.16 +/- 26.53
107487 ncm-et-4 2019-12-13 12:48 01:12:43 1974055 500 17 302 181 -224.97 +/- 25.33
107486 ncm-et-3 2019-12-13 12:48 01:12:57 1960767 500 13 310 177 -237.58 +/- 25.57
107485 ncm-et-15 2019-12-13 12:47 01:13:25 1965845 500 11 325 164 -256.44 +/- 26.61
107484 ncm-et-13 2019-12-13 12:45 01:13:27 1972203 500 15 323 162 -249.64 +/- 26.84
107483 ncm-et-9 2019-12-13 11:36 01:14:02 1968778 500 14 308 178 -234.38 +/- 25.51
107482 ncm-et-3 2019-12-13 11:35 01:11:57 1960614 500 13 306 181 -233.32 +/- 25.26
107481 ncm-et-4 2019-12-13 11:34 01:13:17 1968933 500 14 313 173 -239.74 +/- 25.91
107480 ncm-et-10 2019-12-13 11:33 01:15:38 1958169 500 15 293 192 -217.85 +/- 24.5
107479 ncm-et-15 2019-12-13 11:33 01:13:02 1971100 500 9 303 188 -234.38 +/- 24.64
107478 ncm-et-13 2019-12-13 11:32 01:11:55 1968164 500 13 306 181 -233.32 +/- 25.26
107477 ncm-et-4 2019-12-13 10:20 01:12:58 1972032 500 22 312 166 -230.16 +/- 26.53
107476 ncm-et-10 2019-12-13 10:19 01:12:28 1959695 500 17 310 173 -233.32 +/- 25.95
107475 ncm-et-13 2019-12-13 10:19 01:11:33 1972654 500 10 307 183 -237.58 +/- 25.04
107474 ncm-et-3 2019-12-13 10:19 01:14:33 1965071 500 16 294 190 -217.85 +/- 24.66
107473 ncm-et-15 2019-12-13 10:19 01:12:15 1969266 500 9 326 165 -259.91 +/- 26.48
107472 ncm-et-9 2019-12-13 10:19 01:15:17 1972210 500 11 302 187 -231.21 +/- 24.77
35475 ncm-et-9 2018-05-26 23:28 00:47:54 2026226 318 13 181 124 -204.22 +/- 30.62
35474 ncm-et-14 2018-05-26 23:25 00:50:46 2019045 345 12 225 108 -250.42 +/- 32.97
35473 ncm-et-10 2018-05-26 23:25 00:50:43 2019046 359 8 221 130 -237.22 +/- 29.8
35472 ncm-et-12 2018-05-26 23:25 00:50:50 1998037 345 5 218 122 -250.42 +/- 30.68
35471 ncm-et-13 2018-05-26 23:24 00:51:15 2024590 359 6 226 127 -247.87 +/- 30.1
35470 ncm-et-4 2018-05-26 23:24 00:51:30 2023936 359 9 208 142 -217.01 +/- 28.4
35469 ncm-et-3 2018-05-26 23:24 00:51:30 2024263 363 6 234 123 -256.5 +/- 30.65
35468 ncm-et-7 2018-05-26 23:24 00:51:35 2026882 353 12 209 132 -218.9 +/- 29.66
35467 ncm-et-16 2018-05-26 23:24 00:51:52 2021488 359 11 231 117 -247.87 +/- 31.63
35466 ncm-et-5 2018-05-26 23:24 00:51:50 1980447 366 4 221 141 -236.99 +/- 28.29
35465 ncm-et-6 2018-05-26 23:23 00:52:28 2022466 375 7 238 130 -249.64 +/- 29.81
35464 ncm-et-15 2018-05-26 23:22 00:53:31 2018883 376 11 229 136 -230.05 +/- 29.22
35463 ncm-et-11 2018-05-26 22:26 00:01:55 2020186 11 1 6 4 -170.39 +/- 201.61
35462 ncm-et-6 2018-05-26 22:11 01:11:05 2023936 500 13 300 187 -227.04 +/- 24.82
35461 ncm-et-3 2018-05-26 22:11 01:12:08 2027210 500 12 314 174 -243.0 +/- 25.79
35460 ncm-et-5 2018-05-26 22:11 01:11:47 2024264 500 11 320 169 -250.77 +/- 26.18
35459 ncm-et-15 2018-05-26 22:11 01:10:13 2019858 500 13 302 185 -229.12 +/- 24.96
35458 ncm-et-9 2018-05-26 22:11 00:30:24 2025245 212 4 139 69 -261.54 +/- 41.23
35457 ncm-et-4 2018-05-26 22:11 01:12:25 2002644 500 12 317 171 -246.3 +/- 26.04
35456 ncm-et-14 2018-05-26 22:11 01:13:11 2019371 500 8 311 181 -244.1 +/- 25.14
35455 ncm-et-7 2018-05-26 22:11 01:12:10 2024590 500 12 314 174 -243.0 +/- 25.79
35454 ncm-et-12 2018-05-26 22:11 01:12:38 2018724 500 11 327 162 -258.75 +/- 26.78
35453 ncm-et-10 2018-05-26 22:11 01:13:06 2019860 500 14 322 164 -249.64 +/- 26.66
35452 ncm-et-16 2018-05-26 22:11 01:12:07 2019045 500 11 310 179 -239.74 +/- 25.37
35451 ncm-et-13 2018-05-26 22:11 01:12:28 2024755 500 12 315 173 -244.1 +/- 25.87

Commit

Commit ID d54e8a59551a7ebcbf2c2155dce46c7386b1742a
Author Marco Costalba
Date 2013-06-13 18:05:02 UTC
Reduce more CUT nodes only if parent node is reduced So when we are doing a LMR search at the parent ALL node. This patch didn't prove stronger at 60" TC LLR: -2.97 (-2.94,2.94) Total: 22398 W: 4070 L: 4060 D: 14268 But, first, it scores at 50%, second (and most important for me) the opposite, i.e. normal reduction when parent node is not reduced, seems very bad: LLR: -2.95 (-2.94,2.94) Total: 7036 W: 1446 L: 1534 D: 4056 According to Don, this idea of increased reduction of CUT nodes works because if parent node is reduced, missing a cut-off due to reduced depth search (meaning position is somehow tricky) forces a full depth research at parent node, giving due insight in this set of sensible positions. IOW if we expect a node to fail-high at depth n, then we assume it should fail-high also at depth n-1, if this doesn't happen it means position is tricky enough to deserve a research at depth n+1. bench: 4687419
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