Stockfish 12

stockfish_20052114

https://abrok.eu/stockfish/

stockfish_20052220

https://abrok.eu/stockfish/

Author: Joost VandeVondele
Date: Sat May 23 13:14:09 2020 +0200
Timestamp: 1590232449

Improve CI testing

also enable CXXFLAGS="-D_GLIBCXX_DEBUG" in CI.

closes https://github.com/official-stockfish/Stockfish/pull/2692

No functional change


Author: xoto10
Date: Sat May 23 13:19:26 2020 +0200
Timestamp: 1590232766

Keep low ply history from previous move

This patch keeps the low-ply history from the previous move, shifting the data down by 2 ply.

Tested with closedpos book:

STC:
LLR: 2.93 (-2.94,2.94) {-0.50,1.50}
Total: 71584 W: 14175 L: 13891 D: 43518 Elo +1.38
Ptnml(0-2): 1069, 8228, 16993, 8354, 1148
https://tests.stockfishchess.org/tests/view/5ec0eaafe9d85f94dc429974

LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.75}
Total: 96552 W: 13946 L: 13498 D: 69108 Elo +1.61
Ptnml(0-2): 676, 9082, 28375, 9404, 739
https://tests.stockfishchess.org/tests/view/5ec145efe9d85f94dc4299b0

closes https://github.com/official-stockfish/Stockfish/pull/2688

Bench 5148950


Author: Joost VandeVondele
Date: Sat May 23 13:27:16 2020 +0200
Timestamp: 1590233236

small cleanups

closes https://github.com/official-stockfish/Stockfish/pull/2653

No functional change


https://abrok.eu/stockfish/

Author: Joost VandeVondele
Date: Sat May 30 20:32:52 2020 +0200
Timestamp: 1590863572

Less pruning in draw PV lines.

no futility pruning for certain captures if the PvNode has a draw eval.

passed STC:
LLR: 2.94 (-2.94,2.94) {-0.50,1.50}
Total: 59392 W: 11576 L: 11302 D: 36514 Elo +1.60
Ptnml(0-2): 977, 6816, 13920, 6922, 1061
https://tests.stockfishchess.org/tests/view/5ed0b1bb042fa6d77c355295

passed LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.75}
Total: 64040 W: 8273 L: 7923 D: 47844 Elo +1.90
Ptnml(0-2): 424, 5842, 19220, 6028, 506
https://tests.stockfishchess.org/tests/view/5ed145e0042fa6d77c35531c

closes https://github.com/official-stockfish/Stockfish/pull/2705

Bench: 4704615


Author: protonspring
Date: Sat May 30 20:30:31 2020 +0200
Timestamp: 1590863431

Consolidate all attacks bitboards

This is a non-functional simplification that simplifies getting attacks bitboards.

* consolidates all attacks to attacks_bb (remove Position::attacks_from(..)).
* attacks_bb<PieceType>(square) gets pseudo attacks
* attacks_bb<PieceType>(square, bitboard) gets attacks considering occupied squares in the bitboard).
* pawn_attacks_bb(Color, Square) gets pawn attacks like other pawn attack bitboards.
* Wraps all access to PawnAttacks arrays and PseudoAttacks arrays and adds asserts as appropriate.

Passed STC
LLR: 2.95 (-2.94,2.94) {-1.50,0.50}
Total: 90208 W: 17533 L: 17482 D: 55193 Elo +0.20
Ptnml(0-2): 1412, 10232, 21798, 10217, 1445
https://tests.stockfishchess.org/tests/view/5ece996275787cc0c05d9790

closes https://github.com/official-stockfish/Stockfish/pull/2703

No functional change


https://abrok.eu/stockfish/

!! latest version !!
Author: Daylen Yang
Date: Wed Aug 12 07:49:36 2020 +0200
Timestamp: 1597211376

Use posix_memalign for Apple Silicon instead of _mm_malloc

fails to build on that target, because of missing Intel Intrinsics.
macOS has posix_memalign() since ~2014 so we can simplify the code and just use that for all Apple platforms.

closes https://github.com/official-stockfish/Stockfish/pull/2985

No functional change.

https://abrok.eu/stockfish/

Author: Unai Corzo
Date: Mon Aug 17 12:27:35 2020 +0200
Timestamp: 1597660055

Simplify away the passed pawn extension

STC https://tests.stockfishchess.org/tests/view/5f3955f0e98b6c64b3df41d7
LLR: 2.96 (-2.94,2.94) {-1.50,0.50}
Total: 31992 W: 3611 L: 3548 D: 24833 Elo +0.68
Ptnml(0-2): 174, 2658, 10273, 2713, 178

LTC https://tests.stockfishchess.org/tests/view/5f399e41e98b6c64b3df4210
LLR: 3.01 (-2.94,2.94) {-1.50,0.50}
Total: 29568 W: 1488 L: 1480 D: 26600 Elo +0.09
Ptnml(0-2): 40, 1272, 12142, 1300, 30

closes https://github.com/official-stockfish/Stockfish/pull/3017

bench: 3844671

-----

Recommended net: https://tests.stockfishchess.org/api/nn/nn-82215d0fd0df.nnue

https://abrok.eu/stockfish/

@Waldemar wrote:

Stockfish 12 has come!!!

https://abrok.eu/stockfish/

Is there any Android version of this Engine sir ?

@Waldemar wrote:

https://stockfishchess.org/download/

https://play.google.com/store/apps/details?id=org.petero.droidfish

Thank you Sir

@Zippo wrote:

@Waldemar wrote:

https://stockfishchess.org/download/

https://play.google.com/store/apps/details?id=org.petero.droidfish

Thank you Sir

stockfish 12 fonctionne parfaitement et son installation se fait automatiquement par défaut

A new network from Sergio has been released

https://pixeldrain.com/u/JeRyBGbq

According to my first tests, the new network from Sergio SV 1046 is strong, but not as strong as SV 1739. I think SV 1739 is currently the strongest network at the moment. Maybe someone has the opportunity to test it with other strong networks.

Each tester has different versions of strong networks ,and I have the strongest one-the last network.

Processor:Intel Core i5-7600K, GHz:4.20 , Сore:1, Gui:Fritz-11, Games:100, Time:1+1, Book:Off ,Endgame tables:Syzygy 3-4-5, Hash:128 MB, Ponder:Off.

New network from Sergio:
20200908-1733.bin 2020-09-08 18:41 20M

https://www.comp.nus.edu.sg/~sergio-v/nnue/

put the champion 1046 against the new network 1733. Results will be available later

Processor:Intel Core i5-7600K, GHz:4.20 , Сore:1, Gui:Fritz-11, Games:100, Time:1+1, Book:Off ,Endgame tables:Syzygy 3-4-5, Hash:128 MB, Ponder:Off.


new champion

Games: https://pixeldrain.com/u/Dz6jupuj

Stockfish 110920 x32-x64 Chessman

https://pixeldrain.com/u/Hmg8p4yh

Crystal 3.0 x32-x64 Chessman

https://pixeldrain.com/u/hu2tnLj4

[quote="lisandr"]Crystal 3.0 x32-x64 Chessman

Hi Bro Lisandr..
Thx for the link.. but I want to ask u something.. about Chess Engine ( for Android )

Which Engines u think are the strongest with it's own book ? .is it Brainfish ? Or Bluefish ? Or what ?
I have a little confused here to decide which one are the best for any Android devices

Regards

My opinion is Stockfish, the rest of its copies, clones, which is better than the original or a copy?

@lisandr wrote:

My opinion is Stockfish, the rest of its copies, clones, which is better than the original or a copy?

Woww.. I'm so surprised.. because I've just heard that there is an Engine of Stockfish which has it's own book..
Can u tell me which Stockfish that u mentioned ?
Or perhaps if its not bothering u, the link of it's Engine would be so much grateful

Stockfish 12 of course what else. There is a Stockfish polyglot in which you can add several books . I don't know what kind of book it is. I know that there is a network, and I do not use books, why, if there is a strong network.