Dev Builds » 20230227-2103

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 09:40:40 1953317 3357 2889 2 466 +449.35 +/- 15.77
ncm-et-4 09:40:26 1959157 3366 2917 5 444 +456.31 +/- 16.18
ncm-et-9 09:40:41 1946844 3302 2852 5 445 +452.32 +/- 16.16
ncm-et-10 09:40:09 1948888 3312 2861 3 448 +453.29 +/- 16.09
ncm-et-13 09:40:19 1951570 3339 2869 7 463 +445.58 +/- 15.84
ncm-et-15 09:40:15 1952693 3324 2855 4 465 +446.31 +/- 15.8
20000 17243 26 2731 +450.49 +/- 6.51

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
172527 ncm-et-9 2023-03-05 04:37 00:27:01 1949540 150 127 0 23 +432.29 +/- 74.12
172526 ncm-et-10 2023-03-05 04:36 00:28:04 1945566 152 131 0 21 +451.81 +/- 78.11
172525 ncm-et-4 2023-03-05 04:34 00:29:55 1968100 173 153 0 20 +484.86 +/- 80.52
172524 ncm-et-13 2023-03-05 04:34 00:30:21 1950621 169 129 0 40 +348.85 +/- 54.55
172523 ncm-et-3 2023-03-05 04:33 00:31:02 1960108 179 157 0 22 +473.55 +/- 76.27
172516 ncm-et-15 2023-03-05 04:33 00:31:32 1954188 177 146 1 30 +401.08 +/- 64.27
172467 ncm-et-9 2023-03-05 03:10 01:26:59 1944816 500 438 0 62 +471.92 +/- 43.9
172460 ncm-et-10 2023-03-05 03:08 01:27:52 1957433 500 439 0 61 +474.93 +/- 44.28
172459 ncm-et-15 2023-03-05 03:07 01:24:55 1968254 500 427 0 73 +441.5 +/- 40.29
172458 ncm-et-4 2023-03-05 03:07 01:26:30 1947830 500 415 2 83 +408.38 +/- 37.78
172457 ncm-et-13 2023-03-05 03:07 01:26:38 1958931 500 436 2 62 +460.32 +/- 43.99
172456 ncm-et-3 2023-03-05 03:06 01:26:26 1944345 500 435 1 64 +460.32 +/- 43.24
172400 ncm-et-9 2023-03-05 01:41 01:27:37 1948284 500 429 2 69 +441.5 +/- 41.61
172399 ncm-et-10 2023-03-05 01:41 01:26:04 1949242 500 418 0 82 +419.61 +/- 37.91
172398 ncm-et-15 2023-03-05 01:41 01:25:30 1949512 500 431 1 68 +449.35 +/- 41.89
172396 ncm-et-13 2023-03-05 01:40 01:25:43 1959357 500 418 3 79 +412.8 +/- 38.79
172395 ncm-et-4 2023-03-05 01:40 01:26:29 1959866 500 431 1 68 +449.35 +/- 41.89
172390 ncm-et-3 2023-03-05 01:38 01:27:48 1955425 500 438 0 62 +471.92 +/- 43.9
172366 ncm-et-15 2023-03-05 00:12 01:28:14 1950093 500 425 1 74 +433.94 +/- 40.08
172365 ncm-et-3 2023-03-05 00:12 01:25:07 1964317 500 428 0 72 +444.08 +/- 40.59
172364 ncm-et-9 2023-03-05 00:12 01:28:46 1935984 500 415 1 84 +410.58 +/- 37.5
172363 ncm-et-10 2023-03-05 00:12 01:28:27 1956034 500 430 1 69 +446.7 +/- 41.57
172362 ncm-et-4 2023-03-05 00:12 01:27:24 1955727 500 427 0 73 +441.5 +/- 40.29
172361 ncm-et-13 2023-03-05 00:12 01:27:54 1958474 500 434 1 65 +457.52 +/- 42.89
172190 ncm-et-15 2023-03-04 09:21 00:26:18 1954844 147 124 0 23 +428.48 +/- 74.09
172189 ncm-et-9 2023-03-04 09:20 00:27:09 1952987 152 137 0 15 +513.9 +/- 95.28
172188 ncm-et-10 2023-03-04 09:19 00:28:17 1929115 160 142 0 18 +489.87 +/- 85.51
172187 ncm-et-13 2023-03-04 09:17 00:29:47 1949638 170 147 0 23 +455.72 +/- 74.3
172186 ncm-et-3 2023-03-04 09:16 00:31:04 1958939 178 159 0 19 +499.53 +/- 82.99
172185 ncm-et-4 2023-03-04 09:14 00:33:38 1954104 193 170 0 23 +479.26 +/- 74.44
172178 ncm-et-9 2023-03-04 07:53 01:26:55 1943906 500 436 1 63 +463.16 +/- 43.6
172177 ncm-et-15 2023-03-04 07:52 01:28:12 1953917 500 429 1 70 +444.09 +/- 41.26
172176 ncm-et-10 2023-03-04 07:51 01:26:47 1945569 500 433 0 67 +457.52 +/- 42.15
172175 ncm-et-13 2023-03-04 07:51 01:25:32 1960010 500 431 0 69 +452.04 +/- 41.5
172174 ncm-et-3 2023-03-04 07:47 01:28:21 1926753 500 432 0 68 +454.76 +/- 41.82
172173 ncm-et-4 2023-03-04 07:47 01:26:12 1960639 500 442 0 58 +484.24 +/- 45.47
172166 ncm-et-15 2023-03-04 06:24 01:27:08 1950548 500 434 0 66 +460.32 +/- 42.48
172165 ncm-et-9 2023-03-04 06:24 01:27:58 1940886 500 438 0 62 +471.92 +/- 43.9
172164 ncm-et-10 2023-03-04 06:24 01:27:12 1950865 500 431 2 67 +446.7 +/- 42.25
172163 ncm-et-13 2023-03-04 06:22 01:28:37 1921749 500 430 0 70 +449.35 +/- 41.19
172162 ncm-et-4 2023-03-04 06:22 01:24:20 1963109 500 444 0 56 +490.71 +/- 46.32
172161 ncm-et-3 2023-03-04 06:21 01:25:36 1958018 500 412 0 88 +406.2 +/- 36.53
172148 ncm-et-13 2023-03-04 04:56 01:25:47 1953783 500 444 1 55 +487.45 +/- 46.83
172147 ncm-et-10 2023-03-04 04:56 01:27:26 1957287 500 437 0 63 +468.95 +/- 43.54
172146 ncm-et-15 2023-03-04 04:55 01:28:26 1940195 500 439 0 61 +474.93 +/- 44.28
172145 ncm-et-9 2023-03-04 04:55 01:28:16 1958349 500 432 1 67 +452.04 +/- 42.22
172144 ncm-et-3 2023-03-04 04:55 01:25:16 1958637 500 428 1 71 +441.5 +/- 40.95
172143 ncm-et-4 2023-03-04 04:55 01:25:58 1963885 500 435 2 63 +457.52 +/- 43.63

Commit

Commit ID 6adbc6fa05bbd2a574a8c4c6a6ef2307280217ab
Author Dubslow
Date 2023-02-27 21:03:50 UTC
Late counter bonus: boost underestimated moves The idea here is very intuitive: since we've just proven that the move is good, then if it previously had poor stats, boost those stats more than otherwise. Passed STC: https://tests.stockfishchess.org/tests/view/63fb504ce74a12625bce4154 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 21128 W: 5763 L: 5481 D: 9884 Ptnml(0-2): 52, 2212, 5759, 2484, 57 Passed LTC: https://tests.stockfishchess.org/tests/view/63fb7825e74a12625bce491b LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 91904 W: 24764 L: 24359 D: 42781 Ptnml(0-2): 45, 8735, 27984, 9146, 42 closes https://github.com/official-stockfish/Stockfish/pull/4415 bench 4318808
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