Dev Builds » 20211108-1203

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 08:24:54 1958408 3320 2850 4 466 +445.69 +/- 15.78
ncm-et-4 08:24:31 1962693 3347 2839 10 498 +430.55 +/- 15.27
ncm-et-9 08:23:33 1964192 3328 2865 3 460 +449.32 +/- 15.88
ncm-et-10 08:24:54 1957296 3339 2819 9 511 +426.14 +/- 15.07
ncm-et-13 08:24:48 1961554 3325 2831 7 487 +435.59 +/- 15.44
ncm-et-15 08:24:35 1957069 3341 2843 10 488 +433.88 +/- 15.43
20000 17047 43 2910 +436.68 +/- 6.31

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
153555 ncm-et-10 2021-11-09 05:29 00:36:59 1949305 239 207 0 32 +457.66 +/- 62.11
153554 ncm-et-13 2021-11-09 05:28 00:37:34 1957248 238 193 1 44 +388.28 +/- 52.39
153553 ncm-et-4 2021-11-09 05:28 00:37:53 1963228 246 205 1 40 +411.99 +/- 55.17
153552 ncm-et-15 2021-11-09 05:28 00:38:08 1949192 250 211 2 37 +419.61 +/- 57.55
153551 ncm-et-9 2021-11-09 05:28 00:38:05 1960968 252 217 0 35 +450.83 +/- 59.18
153550 ncm-et-3 2021-11-09 05:27 00:39:01 1964311 255 220 0 35 +453.04 +/- 59.19
153549 ncm-et-4 2021-11-09 04:13 01:14:43 1964923 500 417 3 80 +410.58 +/- 38.54
153548 ncm-et-15 2021-11-09 04:13 01:14:40 1960162 500 424 0 76 +433.94 +/- 39.45
153547 ncm-et-9 2021-11-09 04:13 01:14:43 1969396 500 437 0 63 +468.95 +/- 43.54
153546 ncm-et-13 2021-11-09 04:13 01:15:20 1959551 500 429 2 69 +441.5 +/- 41.61
153545 ncm-et-3 2021-11-09 04:13 01:13:56 1960979 500 434 1 65 +457.52 +/- 42.89
153544 ncm-et-10 2021-11-09 04:13 01:15:56 1952608 500 416 2 82 +410.58 +/- 38.02
153496 ncm-et-3 2021-11-08 18:52 00:10:38 1958343 65 53 0 12 +397.05 +/- 107.0
153495 ncm-et-9 2021-11-08 18:51 00:12:00 1974674 76 69 0 7 +526.46 +/- 158.6
153494 ncm-et-15 2021-11-08 18:49 00:13:38 1960001 91 77 0 14 +431.65 +/- 98.25
153493 ncm-et-13 2021-11-08 18:49 00:13:44 1958958 87 75 1 11 +437.15 +/- 113.78
153492 ncm-et-10 2021-11-08 18:48 00:15:27 1960647 100 78 0 22 +363.18 +/- 75.21
153491 ncm-et-4 2021-11-08 18:47 00:15:29 1963405 101 82 0 19 +393.46 +/- 81.98
153490 ncm-et-3 2021-11-08 17:35 01:16:33 1954350 500 419 1 80 +419.61 +/- 38.47
153489 ncm-et-9 2021-11-08 17:34 01:14:59 1961079 500 435 0 65 +463.15 +/- 42.83
153488 ncm-et-13 2021-11-08 17:32 01:16:18 1963998 500 428 1 71 +441.5 +/- 40.95
153487 ncm-et-15 2021-11-08 17:32 01:16:46 1952476 500 426 3 71 +431.48 +/- 41.0
153486 ncm-et-4 2021-11-08 17:31 01:15:56 1951777 500 436 1 63 +463.16 +/- 43.6
153485 ncm-et-10 2021-11-08 17:30 01:16:25 1954654 500 412 1 87 +404.05 +/- 36.82
153484 ncm-et-3 2021-11-08 16:18 01:16:10 1949208 500 426 2 72 +433.94 +/- 40.69
153483 ncm-et-9 2021-11-08 16:17 01:16:10 1958317 500 422 0 78 +429.05 +/- 38.92
153482 ncm-et-13 2021-11-08 16:17 01:14:48 1960164 500 423 1 76 +429.05 +/- 39.52
153481 ncm-et-10 2021-11-08 16:16 01:14:04 1964925 500 419 3 78 +415.05 +/- 39.05
153480 ncm-et-4 2021-11-08 16:15 01:15:13 1965704 500 427 1 72 +438.95 +/- 40.66
153479 ncm-et-15 2021-11-08 16:14 01:16:52 1958332 500 438 0 62 +471.92 +/- 43.9
153478 ncm-et-9 2021-11-08 15:01 01:15:34 1965534 500 434 1 65 +457.52 +/- 42.89
153477 ncm-et-3 2021-11-08 15:01 01:16:30 1956192 500 440 0 60 +477.98 +/- 44.67
153476 ncm-et-13 2021-11-08 15:01 01:15:21 1963852 500 430 0 70 +449.35 +/- 41.19
153475 ncm-et-10 2021-11-08 15:00 01:14:53 1964455 500 431 0 69 +452.04 +/- 41.5
153474 ncm-et-4 2021-11-08 14:59 01:14:58 1961693 500 420 2 78 +419.61 +/- 39.03
153473 ncm-et-15 2021-11-08 14:59 01:14:20 1959870 500 407 1 92 +393.6 +/- 35.75
153472 ncm-et-13 2021-11-08 13:45 01:15:29 1960922 500 428 1 71 +441.5 +/- 40.95
153471 ncm-et-9 2021-11-08 13:44 01:16:07 1958638 500 424 0 76 +433.94 +/- 39.45
153470 ncm-et-10 2021-11-08 13:44 01:15:13 1959868 500 431 2 67 +446.7 +/- 42.25
153469 ncm-et-4 2021-11-08 13:43 01:15:33 1971273 500 431 2 67 +446.7 +/- 42.25
153468 ncm-et-3 2021-11-08 13:43 01:17:16 1957094 500 436 0 64 +466.03 +/- 43.18
153467 ncm-et-15 2021-11-08 13:43 01:15:53 1953291 500 427 1 72 +438.95 +/- 40.66
153466 ncm-et-4 2021-11-08 12:28 01:14:46 1959542 500 421 0 79 +426.65 +/- 38.66
153465 ncm-et-15 2021-11-08 12:28 01:14:18 1963233 500 433 3 64 +449.35 +/- 43.26
153464 ncm-et-9 2021-11-08 12:28 01:15:55 1964930 500 427 2 71 +436.43 +/- 40.99
153463 ncm-et-13 2021-11-08 12:28 01:16:14 1967743 500 425 0 75 +436.43 +/- 39.73
153462 ncm-et-3 2021-11-08 12:28 01:14:50 1966788 500 422 0 78 +429.05 +/- 38.92
153461 ncm-et-10 2021-11-08 12:28 01:15:57 1951912 500 425 1 74 +433.94 +/- 40.08

Commit

Commit ID 7b278aab9f61620b9dba31896b38aeea1eb911e2
Author Joost VandeVondele
Date 2021-11-08 12:03:52 UTC
Reduce use of lazyEval In case the evaluation at root is large, discourage the use of lazyEval. This fixes https://github.com/official-stockfish/Stockfish/issues/3772 or at least improves it significantly. In this case, poor play with large odds can be observed, in extreme cases leading to a loss despite large advantage: r1bq1b1r/ppp3p1/3p1nkp/n3p3/2B1P2N/2NPB3/PPP2PPP/R3K2R b KQ - 5 9 With this patch the poor move is only considered up to depth 13, in master up to depth 28. The patch did not pass at LTC with Elo gainer bounds, but with slightly positive Elo nevertheless (95% LOS). STC: LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 40368 W: 10318 L: 10041 D: 20009 Ptnml(0-2): 103, 4493, 10725, 4750, 113 https://tests.stockfishchess.org/tests/view/61800ad259e71df00dcc420d LTC: LLR: -2.94 (-2.94,2.94) <0.50,3.00> Total: 212288 W: 52997 L: 52692 D: 106599 Ptnml(0-2): 112, 22038, 61549, 22323, 122 https://tests.stockfishchess.org/tests/view/618050d959e71df00dcc426d closes https://github.com/official-stockfish/Stockfish/pull/3780 Bench: 7127040
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