Dev Builds » 20201214-0652

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 08:21:56 1967043 3335 2649 17 669 +371.52 +/- 13.15
ncm-et-4 08:21:48 1968688 3348 2680 16 652 +377.59 +/- 13.33
ncm-et-9 08:21:47 1965633 3333 2674 19 640 +378.42 +/- 13.46
ncm-et-10 08:21:12 1961293 3302 2613 13 676 +369.86 +/- 13.07
ncm-et-13 08:21:35 1960158 3332 2667 14 651 +378.08 +/- 13.33
ncm-et-15 08:21:52 1969302 3350 2696 16 638 +381.7 +/- 13.48
20000 15979 95 3926 +376.17 +/- 5.42

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
141480 ncm-et-10 2020-12-14 20:11 00:45:44 1964169 302 236 2 64 +358.66 +/- 43.09
141479 ncm-et-3 2020-12-14 20:07 00:50:12 1967858 335 265 2 68 +367.75 +/- 41.79
141478 ncm-et-13 2020-12-14 20:07 00:50:27 1959848 332 276 2 54 +407.62 +/- 47.19
141477 ncm-et-9 2020-12-14 20:06 00:51:08 1965078 333 256 3 74 +345.92 +/- 40.01
141476 ncm-et-4 2020-12-14 20:06 00:51:34 1974055 348 293 1 54 +423.2 +/- 47.16
141475 ncm-et-15 2020-12-14 20:06 00:51:55 1962303 350 276 2 72 +365.75 +/- 40.56
141474 ncm-et-10 2020-12-14 18:54 01:16:11 1964190 500 395 3 102 +366.78 +/- 33.96
141473 ncm-et-3 2020-12-14 18:51 01:15:36 1964919 500 392 1 107 +364.98 +/- 33.02
141472 ncm-et-13 2020-12-14 18:50 01:15:38 1958326 500 385 1 114 +352.8 +/- 31.94
141471 ncm-et-15 2020-12-14 18:49 01:15:18 1973137 500 417 1 82 +415.05 +/- 37.98
141470 ncm-et-4 2020-12-14 18:49 01:15:39 1970016 500 400 2 98 +377.87 +/- 34.64
141469 ncm-et-9 2020-12-14 18:49 01:16:08 1964311 500 414 3 83 +404.05 +/- 37.81
141468 ncm-et-10 2020-12-14 17:36 01:16:32 1958179 500 401 3 96 +377.87 +/- 35.05
141467 ncm-et-3 2020-12-14 17:34 01:15:04 1969259 500 400 2 98 +377.87 +/- 34.64
141466 ncm-et-15 2020-12-14 17:33 01:14:49 1963389 500 411 1 88 +401.92 +/- 36.6
141465 ncm-et-4 2020-12-14 17:33 01:14:51 1961698 500 398 3 99 +372.25 +/- 34.49
141464 ncm-et-13 2020-12-14 17:33 01:16:37 1957247 500 400 3 97 +375.98 +/- 34.86
141463 ncm-et-9 2020-12-14 17:32 01:15:30 1965542 500 401 1 98 +381.7 +/- 34.59
141462 ncm-et-3 2020-12-14 16:19 01:14:53 1962618 500 411 3 86 +397.72 +/- 37.12
141461 ncm-et-10 2020-12-14 16:18 01:17:00 1957098 500 386 1 113 +354.5 +/- 32.09
141460 ncm-et-13 2020-12-14 16:18 01:13:53 1961846 500 408 1 91 +395.65 +/- 35.96
141459 ncm-et-4 2020-12-14 16:17 01:14:55 1967904 500 383 3 114 +346.12 +/- 32.03
141458 ncm-et-9 2020-12-14 16:17 01:14:26 1966777 500 404 0 96 +389.56 +/- 34.9
141457 ncm-et-15 2020-12-14 16:17 01:15:45 1972186 500 399 4 97 +372.25 +/- 34.89
141456 ncm-et-10 2020-12-14 15:03 01:14:12 1962623 500 406 2 92 +389.56 +/- 35.8
141455 ncm-et-3 2020-12-14 15:02 01:15:19 1965692 500 394 4 102 +363.2 +/- 33.99
141454 ncm-et-4 2020-12-14 15:02 01:14:39 1970192 500 387 4 109 +351.11 +/- 32.83
141453 ncm-et-13 2020-12-14 15:01 01:15:15 1959848 500 404 1 95 +387.57 +/- 35.16
141452 ncm-et-9 2020-12-14 15:01 01:14:53 1962151 500 390 7 103 +351.11 +/- 33.84
141451 ncm-et-15 2020-12-14 15:00 01:15:01 1970943 500 410 3 87 +395.65 +/- 36.9
141450 ncm-et-10 2020-12-14 13:47 01:14:36 1966152 500 402 2 96 +381.7 +/- 35.02
141449 ncm-et-4 2020-12-14 13:46 01:14:50 1972188 500 416 1 83 +412.8 +/- 37.74
141448 ncm-et-13 2020-12-14 13:46 01:14:40 1962458 500 397 4 99 +368.59 +/- 34.52
141447 ncm-et-3 2020-12-14 13:45 01:16:04 1965843 500 397 2 101 +372.25 +/- 34.1
141446 ncm-et-15 2020-12-14 13:45 01:14:28 1977006 500 395 2 103 +368.59 +/- 33.75
141445 ncm-et-9 2020-12-14 13:44 01:15:30 1964462 500 410 3 87 +395.65 +/- 36.9
141444 ncm-et-10 2020-12-14 12:29 01:16:57 1956646 500 387 0 113 +357.93 +/- 32.02
141443 ncm-et-13 2020-12-14 12:29 01:15:05 1961534 500 397 2 101 +372.25 +/- 34.1
141442 ncm-et-15 2020-12-14 12:29 01:14:36 1966152 500 388 3 109 +354.5 +/- 32.8
141441 ncm-et-4 2020-12-14 12:29 01:15:20 1964765 500 403 2 95 +383.64 +/- 35.21
141440 ncm-et-9 2020-12-14 12:29 01:14:12 1971112 500 399 2 99 +375.98 +/- 34.46
141439 ncm-et-3 2020-12-14 12:29 01:14:48 1973115 500 390 3 107 +357.94 +/- 33.12

Commit

Commit ID a88a38c3a91749181ffa5d6dc0af7314a70a1c41
Author Vizvezdenec
Date 2020-12-14 06:52:02 UTC
Increase reduction in case of stable best move The idea of this patch is pretty simple - we already do more reductions for non-PV and root nodes in case of stable best move for depth > 10. This patch makes us do so if root depth if > 10 instead, which is logical since best move changes (thus instability of it) is counted at root, so it makes a lot of sense to use depth of the root. passed STC https://tests.stockfishchess.org/tests/view/5fd643271ac16912018885c5 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 13232 W: 1308 L: 1169 D: 10755 Ptnml(0-2): 39, 935, 4535, 1062, 45 passed LTC https://tests.stockfishchess.org/tests/view/5fd68db11ac16912018885f0 LLR: 2.96 (-2.94,2.94) {0.25,1.25} Total: 14024 W: 565 L: 463 D: 12996 Ptnml(0-2): 3, 423, 6062, 517, 7 closes https://github.com/official-stockfish/Stockfish/pull/3263 Bench: 4050630
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