Dev Builds » 20230325-0817

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 09:39:38 1959777 3362 2878 3 481 +442.98 +/- 15.52
ncm-et-4 09:39:27 1952105 3327 2854 4 469 +444.9 +/- 15.73
ncm-et-9 09:39:32 1946056 3326 2865 2 459 +450.42 +/- 15.89
ncm-et-10 09:39:11 1948321 3316 2837 5 474 +441.56 +/- 15.65
ncm-et-13 09:39:34 1955106 3337 2867 3 467 +447.04 +/- 15.76
ncm-et-15 09:39:15 1951350 3332 2862 7 463 +445.18 +/- 15.84
20000 17163 24 2813 +445.32 +/- 6.41

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
181072 ncm-et-10 2023-03-27 11:53 00:55:44 1944687 316 270 0 46 +442.05 +/- 51.2
181071 ncm-et-9 2023-03-27 11:53 00:55:56 1948958 326 284 0 42 +464.82 +/- 53.78
181070 ncm-et-4 2023-03-27 11:52 00:57:15 1956028 327 274 0 53 +421.83 +/- 47.49
181069 ncm-et-13 2023-03-27 11:51 00:58:12 1962376 337 291 0 46 +454.07 +/- 51.24
181068 ncm-et-15 2023-03-27 11:51 00:58:39 1953476 332 283 1 48 +435.68 +/- 50.19
181067 ncm-et-3 2023-03-27 11:47 01:01:53 1968207 362 317 0 45 +471.46 +/- 51.88
181059 ncm-et-9 2023-03-27 10:26 01:26:08 1955490 500 428 1 71 +441.5 +/- 40.95
181058 ncm-et-10 2023-03-27 10:26 01:26:12 1951776 500 423 1 76 +429.05 +/- 39.52
181057 ncm-et-4 2023-03-27 10:26 01:25:39 1963703 500 434 0 66 +460.32 +/- 42.48
181056 ncm-et-13 2023-03-27 10:23 01:26:57 1934900 500 432 0 68 +454.76 +/- 41.82
181055 ncm-et-15 2023-03-27 10:23 01:27:21 1943837 500 425 1 74 +433.94 +/- 40.08
181054 ncm-et-3 2023-03-27 10:21 01:26:13 1955417 500 441 0 59 +481.09 +/- 45.07
181046 ncm-et-9 2023-03-27 08:59 01:26:49 1954513 500 418 0 82 +419.61 +/- 37.91
181045 ncm-et-10 2023-03-27 08:59 01:26:54 1950109 500 435 2 63 +457.52 +/- 43.63
181044 ncm-et-4 2023-03-27 08:58 01:26:36 1955893 500 437 0 63 +468.95 +/- 43.54
181043 ncm-et-13 2023-03-27 08:57 01:25:57 1963533 500 425 0 75 +436.43 +/- 39.73
181042 ncm-et-15 2023-03-27 08:55 01:26:39 1949035 500 437 1 62 +466.04 +/- 43.97
181041 ncm-et-3 2023-03-27 08:54 01:26:19 1954704 500 420 0 80 +424.27 +/- 38.4
181033 ncm-et-10 2023-03-27 07:31 01:26:45 1943743 500 420 0 80 +424.27 +/- 38.4
181032 ncm-et-9 2023-03-27 07:31 01:27:42 1948762 500 435 0 65 +463.15 +/- 42.83
181031 ncm-et-4 2023-03-27 07:30 01:27:47 1958183 500 432 0 68 +454.76 +/- 41.82
181030 ncm-et-13 2023-03-27 07:29 01:27:22 1958186 500 430 2 68 +444.09 +/- 41.92
181029 ncm-et-15 2023-03-27 07:28 01:26:32 1952550 500 418 1 81 +417.32 +/- 38.22
181028 ncm-et-3 2023-03-27 07:27 01:25:32 1968777 500 425 0 75 +436.43 +/- 39.73
181020 ncm-et-10 2023-03-27 06:04 01:27:09 1953330 500 420 1 79 +421.93 +/- 38.73
181019 ncm-et-9 2023-03-27 06:04 01:26:20 1943345 500 431 1 68 +449.35 +/- 41.89
181018 ncm-et-13 2023-03-27 06:01 01:26:48 1956655 500 425 0 75 +436.43 +/- 39.73
181017 ncm-et-3 2023-03-27 06:01 01:25:44 1959544 500 428 0 72 +444.08 +/- 40.59
181016 ncm-et-4 2023-03-27 06:01 01:28:33 1916843 500 422 1 77 +426.65 +/- 39.25
181015 ncm-et-15 2023-03-27 06:00 01:27:07 1941951 500 428 1 71 +441.5 +/- 40.95
181007 ncm-et-9 2023-03-27 04:35 01:27:29 1944366 500 430 0 70 +449.35 +/- 41.19
181006 ncm-et-10 2023-03-27 04:35 01:28:11 1945727 500 429 0 71 +446.7 +/- 40.89
181005 ncm-et-4 2023-03-27 04:35 01:25:30 1961230 500 433 2 65 +452.04 +/- 42.92
181004 ncm-et-13 2023-03-27 04:33 01:27:15 1953891 500 430 0 70 +449.35 +/- 41.19
181003 ncm-et-3 2023-03-27 04:33 01:27:12 1957558 500 425 1 74 +433.94 +/- 40.08
181002 ncm-et-15 2023-03-27 04:32 01:27:24 1957220 500 438 2 60 +466.04 +/- 44.75
180994 ncm-et-15 2023-03-27 03:06 01:25:33 1961382 500 433 0 67 +457.52 +/- 42.15
180993 ncm-et-10 2023-03-27 03:06 01:28:16 1948877 500 440 1 59 +474.93 +/- 45.13
180992 ncm-et-4 2023-03-27 03:06 01:28:07 1952861 500 422 1 77 +426.65 +/- 39.25
180991 ncm-et-13 2023-03-27 03:06 01:27:03 1956201 500 434 1 65 +457.52 +/- 42.89
180990 ncm-et-3 2023-03-27 03:06 01:26:45 1954234 500 422 2 76 +424.28 +/- 39.56
180989 ncm-et-9 2023-03-27 03:06 01:29:08 1926961 500 439 0 61 +474.93 +/- 44.28

Commit

Commit ID 24b37e4586ba610d331048446bd036bec5544c4f
Author pb00067
Date 2023-03-25 08:17:44 UTC
Verified SEE pruning for capturing and checking moves. Patch analyzes field after SEE exchanges concluded with a recapture by the opponent: if opponent Queen/Rook/King results under attack after the exchanges, we consider the move sharp and don't prune it. Important note: By accident I forgot to adjust 'occupied' when the king takes part in the exchanges. As result of this a move is considered sharp too, when opponent king apparently can evade check by recapturing. Surprisingly this seems contribute to patch's strength. STC: https://tests.stockfishchess.org/tests/view/640b16132644b62c33947397 LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 116400 W: 31239 L: 30817 D: 54344 Ptnml(0-2): 350, 12742, 31618, 13116, 374 LTC: https://tests.stockfishchess.org/tests/view/640c88092644b62c3394c1c5 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 177600 W: 47988 L: 47421 D: 82191 Ptnml(0-2): 62, 16905, 54317, 17436, 80 closes https://github.com/official-stockfish/Stockfish/pull/4453 bench: 5012145
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