Dev Builds » 20230227-0728

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 09:40:05 1958760 3321 2876 2 443 +456.69 +/- 16.18
ncm-et-4 09:39:44 1957187 3367 2877 4 486 +440.58 +/- 15.45
ncm-et-9 09:40:07 1947329 3337 2883 8 446 +451.44 +/- 16.15
ncm-et-10 09:40:06 1949093 3305 2821 2 482 +440.16 +/- 15.5
ncm-et-13 09:40:10 1955901 3356 2852 12 492 +431.78 +/- 15.37
ncm-et-15 09:39:51 1948466 3314 2851 4 459 +448.13 +/- 15.9
20000 17160 32 2808 +444.61 +/- 6.42

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
172907 ncm-et-10 2023-03-05 14:23 00:45:50 1944497 258 228 0 30 +483.79 +/- 64.41
172906 ncm-et-15 2023-03-05 14:22 00:46:40 1954251 266 234 0 32 +477.52 +/- 62.19
172899 ncm-et-3 2023-03-05 14:20 00:49:36 1952374 283 240 0 43 +434.01 +/- 53.01
172896 ncm-et-9 2023-03-05 14:19 00:50:24 1952368 286 257 1 28 +502.75 +/- 67.04
172895 ncm-et-13 2023-03-05 14:19 00:50:24 1940352 289 260 0 29 +510.86 +/- 65.71
172893 ncm-et-4 2023-03-05 14:15 00:54:16 1970014 312 263 1 48 +423.98 +/- 50.16
172800 ncm-et-10 2023-03-05 12:56 01:27:11 1943310 500 432 0 68 +454.76 +/- 41.82
172798 ncm-et-15 2023-03-05 12:54 01:27:21 1952524 500 426 1 73 +436.43 +/- 40.36
172796 ncm-et-13 2023-03-05 12:52 01:25:38 1972034 500 434 2 64 +454.76 +/- 43.27
172795 ncm-et-3 2023-03-05 12:52 01:26:59 1968625 500 443 0 57 +487.45 +/- 45.89
172793 ncm-et-9 2023-03-05 12:51 01:27:24 1948886 500 430 3 67 +441.5 +/- 42.25
172788 ncm-et-4 2023-03-05 12:49 01:25:23 1972082 500 430 1 69 +446.7 +/- 41.57
172741 ncm-et-15 2023-03-05 11:26 01:27:32 1935974 500 437 2 61 +463.16 +/- 44.37
172740 ncm-et-10 2023-03-05 11:26 01:28:50 1954966 500 422 0 78 +429.05 +/- 38.92
172739 ncm-et-3 2023-03-05 11:26 01:25:24 1961079 500 434 0 66 +460.32 +/- 42.48
172738 ncm-et-9 2023-03-05 11:25 01:24:33 1964151 500 424 2 74 +429.05 +/- 40.11
172737 ncm-et-13 2023-03-05 11:25 01:26:57 1958345 500 410 0 90 +401.92 +/- 36.1
172736 ncm-et-4 2023-03-05 11:25 01:23:38 1964317 500 425 2 73 +431.48 +/- 40.4
172708 ncm-et-4 2023-03-05 09:58 01:26:09 1947304 500 432 0 68 +454.76 +/- 41.82
172707 ncm-et-9 2023-03-05 09:57 01:27:24 1942992 500 427 0 73 +441.5 +/- 40.29
172706 ncm-et-10 2023-03-05 09:57 01:27:58 1951466 500 433 1 66 +454.76 +/- 42.55
172705 ncm-et-3 2023-03-05 09:57 01:27:49 1956337 500 419 1 80 +419.61 +/- 38.47
172704 ncm-et-15 2023-03-05 09:57 01:28:13 1958367 500 436 1 63 +463.16 +/- 43.6
172703 ncm-et-13 2023-03-05 09:57 01:26:58 1937064 500 418 3 79 +412.8 +/- 38.79
172280 ncm-et-3 2023-03-04 19:05 00:07:32 1965854 38 31 0 7 +397.45 +/- 152.37
172279 ncm-et-10 2023-03-04 19:04 00:08:36 1949787 47 44 0 3 +592.65 +/- 371.01
172278 ncm-et-15 2023-03-04 19:04 00:08:31 1947526 48 39 0 9 +394.07 +/- 128.03
172277 ncm-et-9 2023-03-04 19:04 00:09:04 1946627 51 42 0 9 +405.66 +/- 128.47
172276 ncm-et-4 2023-03-04 19:03 00:09:43 1958489 55 44 0 11 +381.67 +/- 112.39
172275 ncm-et-13 2023-03-04 19:01 00:11:49 1955625 67 62 0 5 +564.58 +/- 219.72
172271 ncm-et-3 2023-03-04 17:37 01:27:33 1953439 500 447 1 52 +497.4 +/- 48.23
172268 ncm-et-15 2023-03-04 17:36 01:27:17 1947516 500 423 0 77 +431.48 +/- 39.18
172267 ncm-et-10 2023-03-04 17:36 01:27:45 1949638 500 410 0 90 +401.92 +/- 36.1
172266 ncm-et-9 2023-03-04 17:36 01:27:27 1938048 500 434 0 66 +460.32 +/- 42.48
172265 ncm-et-4 2023-03-04 17:36 01:26:51 1955596 500 433 0 67 +457.52 +/- 42.15
172263 ncm-et-13 2023-03-04 17:35 01:25:13 1964948 500 436 1 63 +463.16 +/- 43.6
172262 ncm-et-3 2023-03-04 16:09 01:27:01 1958194 500 429 0 71 +446.7 +/- 40.89
172261 ncm-et-13 2023-03-04 16:09 01:25:19 1967234 500 416 1 83 +412.8 +/- 37.74
172260 ncm-et-4 2023-03-04 16:08 01:26:35 1941714 500 429 0 71 +446.7 +/- 40.89
172259 ncm-et-10 2023-03-04 16:08 01:26:52 1944044 500 425 1 74 +433.94 +/- 40.08
172258 ncm-et-9 2023-03-04 16:08 01:26:48 1939101 500 431 0 69 +452.04 +/- 41.5
172257 ncm-et-15 2023-03-04 16:08 01:27:28 1943689 500 437 0 63 +468.95 +/- 43.54
172244 ncm-et-3 2023-03-04 14:41 01:28:11 1954182 500 433 0 67 +457.52 +/- 42.15
172243 ncm-et-15 2023-03-04 14:41 01:26:49 1947883 500 419 0 81 +421.93 +/- 38.15
172242 ncm-et-4 2023-03-04 14:41 01:27:09 1947984 500 421 0 79 +426.65 +/- 38.66
172241 ncm-et-10 2023-03-04 14:41 01:27:04 1955041 500 427 0 73 +441.5 +/- 40.29
172240 ncm-et-13 2023-03-04 14:40 01:27:52 1951612 500 416 5 79 +404.05 +/- 38.78
172239 ncm-et-9 2023-03-04 14:40 01:27:03 1946462 500 438 2 60 +466.04 +/- 44.75

Commit

Commit ID ff5a6f8df196d61a0d9b1ebe54d84eeb9af20079
Author Stefan Geschwentner
Date 2023-02-27 07:28:45 UTC
NNUE accumulator update in probcut. Call the recently added hint function for NNUE accumulator update after a failed probcut search. In this case we already searched at least some captures and tt move which, however, is not sufficient for a cutoff. So it seems we have a greater chance that the full search will also have no cutoff and hence all moves have to be searched. STC: https://tests.stockfishchess.org/tests/view/63fa74a4e74a12625bce1823 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 70096 W: 18770 L: 18423 D: 32903 Ptnml(0-2): 191, 7342, 19654, 7651, 210 To be sure that we have no heavy interaction retest on top of #4410. Rebased STC: https://tests.stockfishchess.org/tests/view/63fb2f62e74a12625bce3b03 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 137688 W: 36790 L: 36349 D: 64549 Ptnml(0-2): 397, 14373, 38919, 14702, 453 closes https://github.com/official-stockfish/Stockfish/pull/4411 No functional change
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