Dev Builds » 20200325-2042

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 08:24:11 1960088 3336 2070 55 1211 +243.01 +/- 9.69
ncm-et-4 08:22:33 1970400 3352 2122 58 1172 +249.51 +/- 9.87
ncm-et-9 08:21:11 1968392 3341 2077 62 1202 +242.52 +/- 9.74
ncm-et-10 08:20:43 1962217 3318 2110 53 1155 +251.87 +/- 9.94
ncm-et-13 08:23:20 1956926 3317 2068 49 1200 +245.58 +/- 9.72
ncm-et-15 08:22:49 1969549 3336 2069 71 1196 +240.24 +/- 9.78
20000 12516 348 7136 +245.42 +/- 4.0

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
120433 ncm-et-10 2020-03-26 05:21 00:48:18 1965232 318 205 6 107 +255.18 +/- 32.94
120432 ncm-et-13 2020-03-26 05:21 00:47:56 1931538 317 210 6 101 +265.5 +/- 33.99
120431 ncm-et-15 2020-03-26 05:18 00:50:39 1970962 336 197 10 129 +218.13 +/- 29.93
120430 ncm-et-3 2020-03-26 05:18 00:50:57 1963994 336 211 6 119 +246.37 +/- 31.13
120429 ncm-et-9 2020-03-26 05:18 00:51:01 1962764 341 223 6 112 +261.29 +/- 32.2
120428 ncm-et-4 2020-03-26 05:16 00:53:12 1972809 352 221 4 127 +249.91 +/- 29.96
120427 ncm-et-10 2020-03-26 04:06 01:14:14 1960474 500 317 7 176 +251.89 +/- 25.5
120426 ncm-et-13 2020-03-26 04:05 01:14:46 1961995 500 304 7 189 +237.58 +/- 24.5
120425 ncm-et-9 2020-03-26 04:04 01:13:21 1969243 500 308 8 184 +240.82 +/- 24.91
120424 ncm-et-15 2020-03-26 04:02 01:15:10 1965843 500 303 18 179 +224.97 +/- 25.49
120423 ncm-et-3 2020-03-26 04:00 01:16:41 1952928 500 313 6 181 +248.53 +/- 25.07
120422 ncm-et-4 2020-03-26 04:00 01:15:08 1970959 500 331 6 163 +269.37 +/- 26.56
120421 ncm-et-10 2020-03-26 02:51 01:13:48 1967391 500 326 10 164 +258.75 +/- 26.59
120420 ncm-et-9 2020-03-26 02:48 01:15:01 1969417 500 290 12 198 +217.85 +/- 24.01
120419 ncm-et-13 2020-03-26 02:48 01:16:29 1964455 500 287 5 208 +221.9 +/- 23.1
120418 ncm-et-3 2020-03-26 02:46 01:13:45 1961536 500 299 8 193 +231.21 +/- 24.24
120417 ncm-et-15 2020-03-26 02:45 01:16:19 1969257 500 324 7 169 +259.91 +/- 26.07
120416 ncm-et-4 2020-03-26 02:44 01:14:50 1966150 500 337 7 156 +275.45 +/- 27.24
120415 ncm-et-10 2020-03-26 01:33 01:17:07 1951926 500 305 7 188 +238.66 +/- 24.57
120414 ncm-et-13 2020-03-26 01:31 01:15:14 1962151 500 322 8 170 +256.44 +/- 26.02
120413 ncm-et-9 2020-03-26 01:30 01:16:12 1970797 500 308 11 181 +237.58 +/- 25.22
120412 ncm-et-15 2020-03-26 01:28 01:15:29 1975448 500 311 10 179 +241.91 +/- 25.35
120411 ncm-et-4 2020-03-26 01:27 01:15:44 1966769 500 315 10 175 +246.3 +/- 25.67
120410 ncm-et-3 2020-03-26 01:27 01:17:35 1959085 500 320 7 173 +255.3 +/- 25.74
120409 ncm-et-10 2020-03-26 00:15 01:17:04 1958638 500 320 4 176 +258.75 +/- 25.38
120408 ncm-et-13 2020-03-26 00:14 01:16:08 1955723 500 315 9 176 +247.41 +/- 25.56
120407 ncm-et-9 2020-03-26 00:14 01:15:29 1972811 500 318 7 175 +253.02 +/- 25.58
120406 ncm-et-15 2020-03-26 00:13 01:14:08 1960616 500 318 9 173 +250.77 +/- 25.8
120405 ncm-et-4 2020-03-26 00:11 01:14:53 1969411 500 300 9 191 +231.21 +/- 24.42
120404 ncm-et-3 2020-03-26 00:10 01:16:05 1962457 500 299 11 190 +228.08 +/- 24.55
120403 ncm-et-9 2020-03-25 22:59 01:14:08 1967554 500 324 13 163 +253.02 +/- 26.73
120402 ncm-et-10 2020-03-25 22:58 01:15:38 1965534 500 314 10 176 +245.2 +/- 25.59
120401 ncm-et-13 2020-03-25 22:58 01:15:24 1963994 500 318 7 175 +253.02 +/- 25.58
120400 ncm-et-15 2020-03-25 22:57 01:15:14 1974828 500 310 9 181 +241.91 +/- 25.17
120399 ncm-et-4 2020-03-25 22:57 01:13:34 1973116 500 331 12 157 +262.24 +/- 27.25
120398 ncm-et-3 2020-03-25 22:54 01:14:43 1960157 500 315 11 174 +245.2 +/- 25.77
120397 ncm-et-10 2020-03-25 21:42 01:14:34 1966330 500 323 9 168 +256.44 +/- 26.22
120396 ncm-et-9 2020-03-25 21:42 01:15:59 1966160 500 306 5 189 +241.91 +/- 24.42
120395 ncm-et-4 2020-03-25 21:40 01:15:12 1973591 500 287 10 203 +216.85 +/- 23.61
120394 ncm-et-15 2020-03-25 21:40 01:15:50 1969891 500 306 8 186 +238.66 +/- 24.75
120393 ncm-et-13 2020-03-25 21:39 01:17:23 1958627 500 312 7 181 +246.3 +/- 25.1
120392 ncm-et-3 2020-03-25 21:39 01:14:25 1960461 500 313 6 181 +248.53 +/- 25.07

Commit

Commit ID 8b229381daa9c2537dc9a8cf5080a3a282265d0a
Author protonspring
Date 2020-03-25 20:42:33 UTC
Remove KNPKB endgame. This is a functional simplification that removes the KNPKB endgame. Testing on only KNPKB positions suggests that this removal actually gains Elo: Score of patch vs master: 3380 - 3035 - 33585 [0.504] 40000 Elo difference: 3.0 +/- 1.4, LOS: 100.0 %, DrawRatio: 84.0 % Score of patch vs master: 290 - 36 - 39674 [0.503] 40000 Elo difference: 2.2 +/- 0.3, LOS: 100.0 %, DrawRatio: 99.2 % removal also doesn't cause a regression with the standard book: STC LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 71376 W: 13794 L: 13719 D: 43863 Ptnml(0-2): 1066, 8092, 17290, 8181, 1059 https://tests.stockfishchess.org/tests/view/5e76c3d5e42a5c3b3ca2e8be LTC LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 28394 W: 3731 L: 3662 D: 21001 Ptnml(0-2): 167, 2339, 9116, 2408, 167 https://tests.stockfishchess.org/tests/view/5e76e5eae42a5c3b3ca2e8d3 closes https://github.com/official-stockfish/Stockfish/pull/2594 Bench 5480811
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