jirayu_sri/stockfish
1
0
Fork 0
mirror of https://github.com/official-stockfish/Stockfish.git synced 2026-07-23 05:07:14 +00:00
Code Issues Packages Projects Releases Wiki Activity
6,546 Commits 6 Branches 60 Tags
8a6a8e8a426f72b0d4b2ff27c442bc01cbe3bbdc
Commit Graph
2868 Commits
Author SHA1 Message Date
Steinar H. Gunderson 8a6a8e8a42 Merge commit 'b822fdf2f2f00758c794cb61a25a044424d2bc0a' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 19:50:17 +01:00
Steinar H. Gunderson 03732aa685 Merge commit '57e06be71f0177a69843750a9f456462d02f23b9' into cluster 2025-12-25 17:57:11 +01:00
Steinar H. Gunderson f2643877eb Merge commit '70bb317afe870c8bc1979ef955f120e4d81f504e' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 17:33:17 +01:00
Steinar H. Gunderson a5ea0b2b2b Merge commit 'c2611efe5c317969b583a5ff81352439f905e722' into cluster 2025-12-25 17:32:39 +01:00
Steinar H. Gunderson 110fdc486a Merge commit '16fee2a7da25c6d0267930eb9677862cb1f009c7' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 17:30:06 +01:00
Steinar H. Gunderson 5d3f71f72d Merge commit '2ce47573b4d3664dca4cbc4354c8c600540d16ad' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 17:22:27 +01:00
Steinar H. Gunderson fa1ab27e15 Merge commit 'aff1f67997cd2584ea7c82d967ac7bfd4cc77861' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 16:59:53 +01:00
Steinar H. Gunderson a5c89f4592 Merge commit '60351b9df901ff5278f208a9cf3a40059ff54832' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 16:56:54 +01:00
Steinar H. Gunderson a449238954 Merge commit '703f17975bd9c29172a27f795ca6b5a7d0a32b25' into cluster 2025-12-25 16:55:54 +01:00
Steinar H. Gunderson 0043886170 Merge commit 'e57fba7fc9be461cbb97c063b269a1e231cdd284' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 16:54:13 +01:00
Steinar H. Gunderson 1cffdc1ce4 Merge commit '7e72b37e4ce3351399bb0ac08686bd84cdc4fba9' into cluster 2025-12-25 16:03:31 +01:00
Steinar H. Gunderson a20c6d296a Merge commit '362a77a3450335e1940020c080bf3b7b361c594a' into cluster 2025-12-25 15:53:03 +01:00
Steinar H. Gunderson d002e92294 Merge commit 'b209f14b1ee0cda8cbd7fa3a8349e65701d1869f' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 15:48:01 +01:00
Steinar H. Gunderson d83e63c163 Merge commit '5d3517c601c64d026824251784dd44f0cbf14873' into cluster 2025-12-25 15:30:32 +01:00
Steinar H. Gunderson d7cf6e22fd Merge commit '5752529cabb3270e055147709ff0847e4d59ec22' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 15:27:42 +01:00
Steinar H. Gunderson d1b19aad2f Merge commit '2cbc20e846e46da8bfc8e254a7703a0bfad3b850' into cluster 2025-12-25 15:26:23 +01:00
Steinar H. Gunderson 8f9e750782 Merge commit '3c379e55d9d92a5704632c6255e72892a4db9a2f' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 15:22:41 +01:00
Steinar H. Gunderson cefd309d92 Merge commit '25361e514bffb81284d4311601a9f7a4a7ced79b' into cluster 2025-12-25 15:22:02 +01:00
Steinar H. Gunderson 46264c6ed7 Merge commit '74a8fc060465a822f0c047f908d5fb07ebc6ad96' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 15:16:24 +01:00
Steinar H. Gunderson 5c9ed18b48 Merge commit 'b01fdb596a196f966549f7132c042ab67962fbbd' into cluster 2025-12-25 15:16:01 +01:00
Steinar H. Gunderson 7df644a00a Merge commit '44cddbd962c738678f407a7414efa5b93f0710d9' into cluster 
This is the last commit before there are more conflicts.
 2025-12-25 15:10:02 +01:00
Steinar H. Gunderson 876495975e Merge commit 'c8213ba0d047569141ed58f5eb86579d976b5614' into cluster 
As part of this work, we needed to rename the namespace Stockfish::Cluster
to Stockfish::Distributed, as Cluster is now a type name.
 2025-12-25 00:17:08 +01:00
Steinar H. Gunderson f358a30ea0 Merge commit '7e890fd048e22bfd213d46ec8eb88f7931f0315d' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 16:29:33 +01:00
Steinar H. Gunderson 639294636e Merge commit '36eb9bc783d35842571d0d4313349b964892d9ca' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 16:26:07 +01:00
Steinar H. Gunderson 784db2cbed Merge commit 'a2a7edf4c8fa145667135bf1bc7f4f67016f7608' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 16:19:29 +01:00
Steinar H. Gunderson bc81aa0911 Merge commit 'a169c78b6d3b082068deb49a39aaa1fd75464c7f' into cluster 2025-12-24 16:18:37 +01:00
Steinar H. Gunderson e56697e3f1 Merge commit 'b0287dcb1c436887075962b596cf2068d2ca9ba8' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 15:23:14 +01:00
Steinar H. Gunderson 125f4f3df0 Merge commit 'ed79745bb9e7207b604c62758ea45dd5c597ed8d' into cluster 2025-12-24 15:22:12 +01:00
Steinar H. Gunderson ea9a328340 Merge commit 'c14b69790a62aad89fcc471cde482923dfe57f1e' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 15:17:55 +01:00
Steinar H. Gunderson fb9a3d3323 Merge commit '2dbb44e28d2e5b3c72ddbbd6f436d41f75031a22' into cluster 2025-12-24 15:17:18 +01:00
Steinar H. Gunderson 649004ed47 Merge commit 'db147fe2586527a854516016699949af53dc5b17' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 15:14:23 +01:00
Steinar H. Gunderson 5f5f991780 Merge commit '3502c8ae426506453ca64e87e48d962b327c2356' into cluster 2025-12-24 15:12:37 +01:00
Steinar H. Gunderson 6b6279098d Merge commit 'd47aa639bd614b37a59f87e6ab68496580f0cf3e' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 15:02:03 +01:00
Steinar H. Gunderson 2a1ed1267e Merge commit 'd3fc1d835e5144cc98d6a7658fb8cfd9370792f1' into cluster 2025-12-24 14:37:41 +01:00
Steinar H. Gunderson 8e509e240a Merge commit '432995ad82119070afa0bf720eb65d800bcbf817' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 13:57:03 +01:00
Steinar H. Gunderson ee41dc5c98 Merge commit '14f6eab07d1d1e1a59372974e5534128676e9440' into cluster 
This is the last commit before there are more conflicts.
 2025-12-24 13:51:24 +01:00
Steinar H. Gunderson f0793a2080 Merge commit '9032c6cbe74ccf7e8963755501e7e6cc473ae471' into cluster 
This is a rather involved merge, since the cluster changes interact
fairly badly with the refactoring we're merging:

The new code wants the search to know nothing at all about the UCI protocol,
it just calls a callback with some worker information (including a Position),
which then transforms that information into a InfoFull which is then sent
through another callback, upon which UCIEngine converts it to UCI and writes
it to stdout.

On the other hand, the MPI information wants to exchange PVs between workers
at this point, and it wants to use the UCI string as the primary medium of
exchange. Position is a lot of work to serialize, so we choose a middle road;
we capture the InfoFull by switching out the callback, serializes it, does the
MPI exchange on that, unserializes it and then continues with the print callback
(if there is new information).
 2025-12-24 13:50:14 +01:00
Steinar H. Gunderson a3cb287405 Merge commit '299707d2c2cbf1694bb21ed4a375b54ef35d719e' into cluster 2025-12-23 16:21:07 +01:00
Shawn XuandDisservin b822fdf2f2 Tune histories 
Passed STC:
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 268736 W: 70080 L: 69421 D: 129235
Ptnml(0-2): 831, 31795, 68460, 32448, 834
https://tests.stockfishchess.org/tests/view/6750778886d5ee47d9540e7c

Passed LTC:
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 505356 W: 129145 L: 127868 D: 248343
Ptnml(0-2): 307, 54901, 140959, 56230, 281
https://tests.stockfishchess.org/tests/view/675367de86d5ee47d9541536

closes https://github.com/official-stockfish/Stockfish/pull/5712

Bench: 1148169
 2024-12-22 15:14:22 +01:00
Nonlinear2andGitHub cf10644d6e Fix duplicate code (#5711) 
closes https://github.com/official-stockfish/Stockfish/pull/5711

No functional change
 2024-12-08 22:24:29 +01:00
Michael ChalyandDisservin afaf3a0f2a Refine statscore for captures 
Continuation of previous attempts there.
Now instead of using capture history with a static offset also add the
value of the captured piece in the same way at it is used in movepicker.

Passed STC:
https://tests.stockfishchess.org/tests/view/674aa3d386d5ee47d95404aa
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 116480 W: 30433 L: 29999 D: 56048
Ptnml(0-2): 361, 13720, 29662, 14118, 379

Passed LTC:
https://tests.stockfishchess.org/tests/view/674c4b2d86d5ee47d954073f
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 133542 W: 34365 L: 33847 D: 65330
Ptnml(0-2): 78, 14585, 36934, 15089, 85

closes https://github.com/official-stockfish/Stockfish/pull/5706

Bench: 934447
 2024-12-08 19:57:59 +01:00
Shawn XuandDisservin 6a8478c6ad Simplify Prior Capture Countermove Bonus 
Passed Non-regression STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 184032 W: 47626 L: 47568 D: 88838
Ptnml(0-2): 590, 21808, 47238, 21714, 666
https://tests.stockfishchess.org/tests/view/67412c7686d5ee47d953f743

Passed Non-regression LTC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 169218 W: 43395 L: 43323 D: 82500
Ptnml(0-2): 302, 18567, 46791, 18655, 294
https://tests.stockfishchess.org/tests/view/6743b7e086d5ee47d953f9a6

closes https://github.com/official-stockfish/Stockfish/pull/5701

Bench: 1130692
 2024-12-08 19:55:10 +01:00
pb00067andDisservin 713000c517 Same weight for black and white nonPawnCorrection history 
Since we don't have color dependent parameters in NNUE eval, it also has
no sense IMO to have color dependent parameters in correction histories.

Ideally a fixed depth search on a single thread should be determistic,
so delivering the same result (move) if we just flip colors on the
board.

Patch replaces 2 parameters (122 and 185) with just one value 154 (= the avg of the two).

Passed STC-non regression
https://tests.stockfishchess.org/tests/view/6740a63286d5ee47d953f656
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 122336 W: 31499 L: 31372 D: 59465
Ptnml(0-2): 336, 14535, 31301, 14658, 338

Passed LTC-non regression
https://tests.stockfishchess.org/tests/view/67419bae86d5ee47d953f7b6
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 101400 W: 25870 L: 25731 D: 49799
Ptnml(0-2): 78, 11109, 28166, 11290, 57

closes https://github.com/official-stockfish/Stockfish/pull/5698

Bench: 1215483
 2024-12-08 19:52:16 +01:00
FauziAkramandDisservin d5a36a3c92 Simplify probCutBeta formula 
After recent changes to the improving definition, seems like there is no
need anymore to keep opponentWorsening in the probCutBeta formula.

Passed STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 214272 W: 55566 L: 55541 D: 103165
Ptnml(0-2): 620, 25540, 54817, 25513, 646
https://tests.stockfishchess.org/tests/view/6735243d86d5ee47d953eaea

Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 126708 W: 32329 L: 32216 D: 62163
Ptnml(0-2): 68, 13986, 35123, 14119, 58
https://tests.stockfishchess.org/tests/view/67393cf686d5ee47d953ef99

closes https://github.com/official-stockfish/Stockfish/pull/5697

Bench: 983067
 2024-12-08 19:49:01 +01:00
Nonlinear2andDisservin da82942b54 Add functions to check for decisive scores 
Thanks to peregrineshahin and robbyrobbyrob for their suggestions.

closes https://github.com/official-stockfish/Stockfish/pull/5696

No functional change
 2024-12-08 19:48:49 +01:00
Nonlinear2andDisservin 57e06be71f Add functions to check for decisive scores 
Thanks to peregrineshahin and robbyrobbyrob for their suggestions.

closes https://github.com/official-stockfish/Stockfish/pull/5696

No functional change
 2024-12-08 19:47:02 +01:00
Daniel MonroeandDisservin 70bb317afe Bonus for a prior capture that causes a fail low. 
This tweak adds a bonus equal to twice the stat_bonus for the current depth for a prior capture that caused a fail high, similar to the prior countermove bonus we currently have.

Passed STC
https://tests.stockfishchess.org/tests/view/673bc14b86d5ee47d953f1f2
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 105824 W: 27538 L: 27118 D: 51168
Ptnml(0-2): 358, 12370, 27024, 12814, 346

Passed LTC
https://tests.stockfishchess.org/tests/view/673ccbff86d5ee47d953f2d9
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 134502 W: 34340 L: 33820 D: 66342
Ptnml(0-2): 102, 14634, 37229, 15214, 72

closes https://github.com/official-stockfish/Stockfish/pull/5695

Bench: 1107054
 2024-12-08 19:46:07 +01:00
Daniel MonroeandDisservin fb6be17ad4 Simplify statscore at captures 
Simplify statscores for captures, setting them to 0

A recent tweak of Vizvezdenec finds substantial elo gain from giving
captures a separate statscore, which is used mainly for reductions. The
idea is that the old combination of quiet histories was inappropriate
and that a value based on the capture history is more suitable. This
simplification sets the statscore for captures to 0, suggesting that the
elo gain came from rectifying the quiet history/capture mismatch.

Passed STC (against a slightly older version of Viz's patch)
https://tests.stockfishchess.org/tests/view/673ac6e286d5ee47d953f0ec
LR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 57312 W: 14872 L: 14672 D: 27768
Ptnml(0-2): 152, 6761, 14649, 6923, 171

Passed LTC (against Viz's newest patch)
https://tests.stockfishchess.org/tests/view/673cd00686d5ee47d953f2db
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 88236 W: 22510 L: 22358 D: 43368
Ptnml(0-2): 70, 9530, 24745, 9724, 49

closes https://github.com/official-stockfish/Stockfish/pull/5691

Bench: 959947
 2024-11-22 23:34:15 +01:00
Shawn XuandDisservin 4fcd78ceb4 Simplify Probcut Bonus 
Passed STC:
LLR: 2.99 (-2.94,2.94) <-1.75,0.25>
Total: 172288 W: 44656 L: 44580 D: 83052
Ptnml(0-2): 507, 20650, 43782, 20670, 535
https://tests.stockfishchess.org/tests/view/673b74f986d5ee47d953f1a3

Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 94596 W: 24098 L: 23953 D: 46545
Ptnml(0-2): 57, 10322, 26393, 10471, 55
https://tests.stockfishchess.org/tests/view/673d191886d5ee47d953f337

closes https://github.com/official-stockfish/Stockfish/pull/5688

Bench: 1031022
 2024-11-22 23:31:34 +01:00
Michael ChalyandDisservin cd3c13a883 Further tweak statscore for captures 
Even lower offset.

Passed STC:
https://tests.stockfishchess.org/tests/view/673a66d786d5ee47d953f070
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 63776 W: 16570 L: 16216 D: 30990
Ptnml(0-2): 178, 7371, 16478, 7641, 220

Passed LTC:
https://tests.stockfishchess.org/tests/view/673b2e2a86d5ee47d953f14b
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 156960 W: 39999 L: 39435 D: 77526
Ptnml(0-2): 96, 16965, 43803, 17511, 105

closes https://github.com/official-stockfish/Stockfish/pull/5686

Bench: 867931
 2024-11-22 23:29:37 +01:00