Dev Builds » 20200514-1847

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 10:10:13 1959486 4016 2550 70 1396 +250.5 +/- 9.05
ncm-et-4 10:09:53 1963860 4051 2519 58 1474 +244.93 +/- 8.77
ncm-et-9 10:09:51 1966608 4030 2486 61 1483 +241.77 +/- 8.74
ncm-et-10 10:09:40 1963964 4023 2585 58 1380 +256.52 +/- 9.09
ncm-et-13 09:46:26 1961711 3880 2466 46 1368 +254.0 +/- 9.1
20000 12606 293 7101 +249.45 +/- 4.0

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
131011 ncm-et-3 2020-05-15 06:43 00:02:49 1962302 16 9 1 6 +190.85 +/- 155.67 ↓
131010 ncm-et-10 2020-05-15 06:42 00:03:57 1959239 23 15 0 8 +270.63 +/- 130.4 ↓
131009 ncm-et-9 2020-05-15 06:41 00:04:48 1972342 30 16 0 14 +206.63 +/- 90.34 ↓
131008 ncm-et-4 2020-05-15 06:37 00:08:44 1911248 51 34 0 17 +279.57 +/- 84.67 ↓
131007 ncm-et-13 2020-05-15 05:49 00:57:30 1963532 380 238 4 138 +249.53 +/- 28.7 ↓
131006 ncm-et-3 2020-05-15 05:26 01:16:19 1963228 500 332 7 161 +269.37 +/- 26.77 ↓
131005 ncm-et-10 2020-05-15 05:25 01:16:10 1964314 500 319 6 175 +255.3 +/- 25.54 ↓
131004 ncm-et-9 2020-05-15 05:25 01:15:25 1962612 500 315 10 175 +246.3 +/- 25.67 ↓
131003 ncm-et-4 2020-05-15 05:21 01:15:02 1970815 500 329 7 164 +265.78 +/- 26.51 ↓
131002 ncm-et-13 2020-05-15 04:32 01:15:56 1959084 500 311 8 181 +244.1 +/- 25.14 ↓
131001 ncm-et-9 2020-05-15 04:10 01:14:16 1963228 500 322 8 170 +256.44 +/- 26.02 ↓
131000 ncm-et-3 2020-05-15 04:09 01:15:32 1966150 500 319 7 174 +254.16 +/- 25.66 ↓
130999 ncm-et-10 2020-05-15 04:07 01:16:40 1966163 500 315 5 180 +251.89 +/- 25.1 ↓
130998 ncm-et-4 2020-05-15 04:04 01:15:53 1974360 500 304 7 189 +237.58 +/- 24.5 ↓
130997 ncm-et-13 2020-05-15 03:17 01:14:03 1961077 500 310 8 182 +243.0 +/- 25.06 ↓
130996 ncm-et-3 2020-05-15 02:52 01:15:53 1964456 500 315 14 171 +241.91 +/- 26.07 ↓
130995 ncm-et-9 2020-05-15 02:51 01:17:00 1970644 500 308 3 189 +246.3 +/- 24.33 ↓
130994 ncm-et-10 2020-05-15 02:51 01:15:29 1967849 500 332 5 163 +271.78 +/- 26.53 ↓
130993 ncm-et-4 2020-05-15 02:49 01:14:21 1972497 500 317 3 180 +256.44 +/- 25.02 ↓
130992 ncm-et-13 2020-05-15 01:59 01:16:33 1961843 500 322 7 171 +257.59 +/- 25.91 ↓
130991 ncm-et-10 2020-05-15 01:35 01:14:14 1967077 500 312 7 181 +246.3 +/- 25.1 ↓
130990 ncm-et-9 2020-05-15 01:35 01:15:10 1965561 500 305 5 190 +240.82 +/- 24.35 ↓
130989 ncm-et-3 2020-05-15 01:34 01:17:03 1957249 500 325 7 168 +261.07 +/- 26.16 ↓
130988 ncm-et-4 2020-05-15 01:32 01:15:14 1967084 500 293 10 197 +222.92 +/- 24.02 ↓
130987 ncm-et-13 2020-05-15 00:42 01:15:42 1958016 500 323 2 175 +264.6 +/- 25.37 ↓
130986 ncm-et-10 2020-05-15 00:18 01:15:49 1962328 500 330 7 163 +266.97 +/- 26.6 ↓
130985 ncm-et-9 2020-05-15 00:18 01:16:01 1966924 500 297 12 191 +224.97 +/- 24.5 ↓
130984 ncm-et-3 2020-05-15 00:18 01:15:36 1963688 500 293 11 196 +221.9 +/- 24.12 ↓
130983 ncm-et-4 2020-05-15 00:16 01:15:31 1974516 500 305 7 188 +238.66 +/- 24.57 ↓
130982 ncm-et-13 2020-05-14 23:26 01:15:20 1963686 500 340 4 156 +282.94 +/- 27.13 ↓
130981 ncm-et-10 2020-05-14 23:03 01:14:16 1967539 500 325 7 168 +261.07 +/- 26.16 ↓
130980 ncm-et-3 2020-05-14 23:02 01:14:21 1963840 500 301 8 191 +233.32 +/- 24.39 ↓
130979 ncm-et-9 2020-05-14 23:00 01:16:41 1963226 500 309 6 185 +244.1 +/- 24.76 ↓
130978 ncm-et-4 2020-05-14 22:59 01:15:27 1966462 500 317 9 174 +249.64 +/- 25.72 ↓
130977 ncm-et-13 2020-05-14 22:09 01:15:46 1965071 500 312 4 184 +249.64 +/- 24.75 ↓
130976 ncm-et-10 2020-05-14 21:44 01:18:11 1947533 500 315 10 175 +246.3 +/- 25.67 ↓
130975 ncm-et-3 2020-05-14 21:44 01:17:11 1958327 500 321 8 171 +255.3 +/- 25.94 ↓
130974 ncm-et-9 2020-05-14 21:44 01:15:43 1966613 500 307 11 182 +236.51 +/- 25.14 ↓
130973 ncm-et-4 2020-05-14 21:43 01:14:57 1963243 500 315 8 177 +248.53 +/- 25.45 ↓
130972 ncm-et-13 2020-05-14 20:52 01:15:36 1961384 500 310 9 181 +241.91 +/- 25.17 ↓
130971 ncm-et-10 2020-05-14 20:28 01:14:54 1973637 500 322 11 167 +253.02 +/- 26.35 ↓
130970 ncm-et-9 2020-05-14 20:28 01:14:47 1968325 500 307 6 187 +241.91 +/- 24.61 ↓
130969 ncm-et-4 2020-05-14 20:28 01:14:44 1974523 500 305 7 188 +238.66 +/- 24.57 ↓
130968 ncm-et-3 2020-05-14 20:27 01:15:29 1936140 500 335 7 158 +273.0 +/- 27.05 ↓

Commit

Commit ID c6ce612f0ada9b5f0d9530128545d1ee7d58b3e5
Author protonspring
Date 2020-05-14 18:47:59 UTC
Simplify Time Management This is a functional simplification of the time management system. With this patch, there is a simple equation for each of two distinct time controls: basetime + increment, and x moves in y seconds (+increment). These equations are easy to plot and understand making future modifications or adding additional time controls much easier. SlowMover is reset to 100 so that is has no effect unless a user changes it. There are two scaling variables: * Opt_scale is a scale factor (or percentage) of time to use for this current move. * Max_scale is a scale factor to apply to the resulting optimumTime. There seems to be some elo gain in most scenarios. Better performance is attributable to one of two things: * minThinkingTime was not allowing reasonable time calculations for very short games like 10+0 or 10+0.01. This is because adding almost no increment and substracting move overhead for 50 moves quickly results in almost 0 time very early in the game. Master depended on minThinkingTime to handle these short games instead of good time management. This patch addresses this issue by lowering minThinkingTime to 0 and adjusting moverOverhead if there are very low increments. * Notice that the time distribution curves tail downward for the first 10 moves or so. This causes less time to attribute for very early moves leaving more time available for middle moves where more important decisions happen. Here is a summary of tests for this version at different time controls: SMP 5+0.05 LLR: 2.97 (-2.94,2.94) {-1.50,0.50} Total: 46544 W: 7175 L: 7089 D: 32280 Ptnml(0-2): 508, 4826, 12517, 4914, 507 https://tests.stockfishchess.org/tests/user/protonspring STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 20480 W: 3872 L: 3718 D: 12890 Ptnml(0-2): 295, 2364, 4824, 2406, 351 https://tests.stockfishchess.org/tests/view/5ebc343e7dd5693aad4e6873 STC, sudden death LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 7024 W: 1706 L: 1489 D: 3829 Ptnml(0-2): 149, 813, 1417, 938, 195 https://tests.stockfishchess.org/tests/view/5ebc346f7dd5693aad4e6875 STC, TCEC style LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 4192 W: 1014 L: 811 D: 2367 Ptnml(0-2): 66, 446, 912, 563, 109 https://tests.stockfishchess.org/tests/view/5ebc34857dd5693aad4e6877 40/10 LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 54032 W: 10592 L: 10480 D: 32960 Ptnml(0-2): 967, 6148, 12677, 6254, 970 https://tests.stockfishchess.org/tests/view/5ebc50597dd5693aad4e688d LTC, sudden death LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 9152 W: 1391 L: 1263 D: 6498 Ptnml(0-2): 75, 888, 2526, 1008, 79 https://tests.stockfishchess.org/tests/view/5ebc6f5c7dd5693aad4e689b LTC LLR: 2.98 (-2.94,2.94) {-1.50,0.50} Total: 12344 W: 1563 L: 1459 D: 9322 Ptnml(0-2): 70, 1103, 3740, 1171, 88 https://tests.stockfishchess.org/tests/view/5ebc6f4c7dd5693aad4e6899 closes https://github.com/official-stockfish/Stockfish/pull/2678 Bench: 4395562
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