Dev Builds » 20200928-2034

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 08:30:21 1962745 3318 2579 26 713 +354.02 +/- 12.75
ncm-et-4 08:31:34 1963823 3361 2617 24 720 +355.78 +/- 12.68
ncm-et-9 08:31:27 1968015 3342 2617 24 701 +359.58 +/- 12.86
ncm-et-10 08:31:31 1960076 3312 2600 21 691 +362.03 +/- 12.95
ncm-et-13 08:31:20 1961712 3327 2563 34 730 +346.24 +/- 12.61
ncm-et-15 08:31:31 1968900 3340 2610 23 707 +358.42 +/- 12.8
20000 15586 152 4262 +355.95 +/- 5.21

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
139413 ncm-et-10 2020-09-30 05:40 00:49:21 1958474 312 243 4 65 +351.13 +/- 42.82
139412 ncm-et-13 2020-09-30 05:40 00:49:37 1959849 327 264 4 59 +377.03 +/- 45.04
139411 ncm-et-3 2020-09-30 05:39 00:50:01 1958473 318 256 3 59 +377.49 +/- 45.04
139410 ncm-et-9 2020-09-30 05:37 00:52:20 1963378 342 272 5 65 +363.82 +/- 42.82
139409 ncm-et-15 2020-09-30 05:37 00:52:44 1963685 340 278 2 60 +393.36 +/- 44.65
139408 ncm-et-4 2020-09-30 05:35 00:54:39 1964611 361 269 4 88 +325.72 +/- 36.59
139407 ncm-et-3 2020-09-30 04:21 01:16:52 1963379 500 397 6 97 +364.98 +/- 34.9
139406 ncm-et-10 2020-09-30 04:21 01:17:58 1956329 500 393 3 104 +363.2 +/- 33.62
139405 ncm-et-9 2020-09-30 04:21 01:15:22 1966768 500 389 3 108 +356.21 +/- 32.96
139404 ncm-et-13 2020-09-30 04:20 01:18:42 1959082 500 359 4 137 +308.24 +/- 29.1
139403 ncm-et-15 2020-09-30 04:19 01:16:52 1968323 500 393 4 103 +361.43 +/- 33.81
139402 ncm-et-4 2020-09-30 04:16 01:17:22 1955089 500 391 5 104 +356.21 +/- 33.66
139401 ncm-et-10 2020-09-30 03:03 01:16:32 1960001 500 380 5 115 +338.04 +/- 31.95
139400 ncm-et-9 2020-09-30 03:03 01:16:37 1965381 500 396 3 101 +368.59 +/- 34.13
139399 ncm-et-13 2020-09-30 03:03 01:15:53 1961688 500 395 3 102 +366.78 +/- 33.96
139398 ncm-et-4 2020-09-30 03:01 01:14:13 1972661 500 393 2 105 +364.98 +/- 33.41
139397 ncm-et-3 2020-09-30 03:01 01:18:32 1961231 500 388 3 109 +354.5 +/- 32.8
139396 ncm-et-15 2020-09-30 03:00 01:17:18 1969420 500 394 1 105 +368.59 +/- 33.35
139395 ncm-et-10 2020-09-30 01:47 01:15:20 1962303 500 395 3 102 +366.78 +/- 33.96
139394 ncm-et-15 2020-09-30 01:45 01:14:36 1973437 500 379 3 118 +339.63 +/- 31.46
139393 ncm-et-9 2020-09-30 01:44 01:17:40 1975135 500 407 4 89 +387.57 +/- 36.48
139392 ncm-et-13 2020-09-30 01:44 01:17:24 1963072 500 394 4 102 +363.2 +/- 33.99
139391 ncm-et-4 2020-09-30 01:44 01:16:18 1963080 500 392 4 104 +359.68 +/- 33.64
139390 ncm-et-3 2020-09-30 01:43 01:16:13 1963994 500 385 3 112 +349.43 +/- 32.33
139389 ncm-et-10 2020-09-30 00:31 01:14:51 1967397 500 397 2 101 +372.25 +/- 34.1
139388 ncm-et-15 2020-09-30 00:28 01:15:35 1970499 500 382 4 114 +342.85 +/- 32.07
139387 ncm-et-9 2020-09-30 00:27 01:16:01 1971420 500 382 3 115 +344.48 +/- 31.89
139386 ncm-et-3 2020-09-30 00:27 01:15:29 1963688 500 390 2 108 +359.68 +/- 32.92
139385 ncm-et-4 2020-09-30 00:26 01:16:41 1956516 500 387 5 108 +349.43 +/- 33.01
139384 ncm-et-13 2020-09-30 00:26 01:17:24 1962610 500 384 6 110 +342.85 +/- 32.71
139383 ncm-et-10 2020-09-29 23:11 01:18:49 1957399 500 398 2 100 +374.11 +/- 34.27
139382 ncm-et-15 2020-09-29 23:09 01:17:47 1968628 500 401 6 93 +372.25 +/- 35.66
139381 ncm-et-9 2020-09-29 23:09 01:16:55 1965701 500 377 6 117 +331.77 +/- 31.68
139380 ncm-et-4 2020-09-29 23:09 01:15:40 1962772 500 388 3 109 +354.5 +/- 32.8
139379 ncm-et-3 2020-09-29 23:09 01:16:38 1966460 500 382 4 114 +342.85 +/- 32.07
139378 ncm-et-13 2020-09-29 23:08 01:16:28 1964302 500 383 8 109 +338.04 +/- 32.87
139377 ncm-et-9 2020-09-29 21:51 01:16:32 1968322 500 394 0 106 +370.41 +/- 33.12
139376 ncm-et-15 2020-09-29 21:51 01:16:39 1968313 500 383 3 114 +346.12 +/- 32.03
139375 ncm-et-3 2020-09-29 21:51 01:16:36 1961996 500 381 5 114 +339.63 +/- 32.09
139374 ncm-et-4 2020-09-29 21:51 01:16:41 1972034 500 397 1 102 +374.11 +/- 33.87
139373 ncm-et-10 2020-09-29 21:51 01:18:40 1958631 500 394 2 104 +366.78 +/- 33.58
139372 ncm-et-13 2020-09-29 21:51 01:15:52 1961381 500 384 5 111 +344.48 +/- 32.54

Commit

Commit ID 6f0aa186d8c9ead30a107634c438c6339b9cba09
Author Stefan Geschwentner
Date 2020-09-28 20:34:25 UTC
Tweak reduction formula. Replace log(i) with log(i + 0.25 * log(i)). This increases especially for low values the reductions. But for bigger values there are nearly no changes. STC: LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 49640 W: 5505 L: 5289 D: 38846 Ptnml(0-2): 270, 4074, 15924, 4274, 278 https://tests.stockfishchess.org/tests/view/5f71f04d3b22d6afa5069478 LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 43856 W: 2209 L: 2021 D: 39626 Ptnml(0-2): 32, 1776, 18128, 1956, 36 https://tests.stockfishchess.org/tests/view/5f7232ee3b22d6afa50699a2 closes https://github.com/official-stockfish/Stockfish/pull/3163 Bench: 3555769
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