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Stockfish 251115 wins JCER Test Tournament strong chess engines, 2015.11.28 - 2015.11.29

168 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Fritz 14  Book:  Perfect 2015    Table created:   Scid vs PC  

Zurichchess geneva - chess engines UCI. New version!

Zurichess  - UCI chess engine Author - Alexandru Mosoi Zurichchess previous versions Zurichchess geneva download

Stockfish 15112108b wins JCER - Test Clone Stockfish, 2015.11.24 - 2015.11.27

240 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Arena 3.5  Book:  Perfect 2015    Table created:   Scid vs PC  

Sayuri 2015.11.28 - new version chess engine UCI

Sayuri  - UCI chess engine Author - Hironori Ishibashi         Sayuri previous versions JCER = 2309 Sayuri 2015.11.28 download

First Test Rhetoric 1.4.3, 2015.11.27 - 2015.11.28

100 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Arena 3.5  Book:  Perfect 2015    Table created:   Scid vs PC  

K2 0.79 - UCI chess engine. New version

K2  - UCI chess engines Author - Sergey Meus  Previous version chess engine K2   Rating    JCER older versions: K2 0.71=2444 K2 0.75=2413  K2 0.63=2386  K2 0.57=2340   K2 0.79 download

JCER Stockfish Test Tournament, 2015.11.24

60 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Arena 3.5  Book:  Perfect 2015    Table created:   Scid vs PC  

Komodo 7 is free !

Komodo 7 download All files (games, tables and engines) - download from page

JCER Match Stockfish, 2015.11.24

50 games download      Temp :  3' + 3" Hardware: Intel(R) Core(TM) i7-4710MQ CPU @ 2.50GHz with 7,9 GB Memory  system:  Windows 10 64 bit  GUI-Arena 3.5  Book:  Perfect 2015    Table created:   Scid vs PC  

Rhetoric 1.4.3 - UCI chess engine. New version

Rhetoric  - UCI chess engines Author - Alberto Sanjuan Rating JCER older versions - Rhetoric=2631, Rhetoric 1.4.3 download

Chess Assistant 16 - released

Chess Assistant 16 - best chess software for managing chess games and databases. Language versions: English, German, French, Spanish, Italian. MORE

Stockfish 15112502 - new development version very strong chess engine UCI

Stockfish  - chess engines UCI Previous version chess engine Stockfish   Author compilation -  Joona Kiiski Information on the compilation: Timestamp: 1448414685  Revert "Allow cross compilation of Windows binaries on a Linux system"  This reverts commit 388630ae285b3f9f0c8ee4f30e754bde6688c57c.  Confuses fishtest build system  JCER =3256   Stockfish 15112502 - download

Protector 1.9.0 wins JCER Mini Test Tournament, 2015.11.23 - 2015.11.24

60 games download      Temp :  3' + 3" Hardware: Intel(R) Core(TM) i7-4710MQ CPU @ 2.50GHz with 7,9 GB Memory  system:  Windows 10 64 bit  GUI-Arena 3.5  Book:  Perfect 2015    Table created:   Scid vs PC  

Stockfish 15112402 - new development version very strong chess engine UCI

Stockfish  - chess engines UCI Previous version chess engine Stockfish   Author compilation -  Mstembera Information on the compilation: Timestamp: 1448327174  Allow cross compilation of Windows binaries on a Linux system  that are PGO, LTO, and statically linked.  Credit:  No functional change  Resolves #505  JCER =3256   Stockfish 15112402 - download

Stockfish 15112108b wins JCER Stockfish Test Tournament, 2015.11.22 - 2015.11.24

150 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Arena 3.5  Book:  Perfect 2015    Table created:   Scid vs PC  

First Test Greko2015, 2015.11.22 - 2015.11.23

50 games download      Temp :  3' + 3" Hardware: Intel(R) Core(TM) i7-4710MQ CPU @ 2.50GHz with 7,9 GB Memory GB  system:  Windows 10 64 bit  GUI- Arena 3.5 Book: Perfect 2015   Table created:  Scid vs PC   All files (games, tables and engines) - download from page

Komodo 9.2 wins JCER Test Tournament very strong Chess Engines, 2015.11.21 - 2015.11.22

168 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Arena 3.5 Book: Perfect 2015   Table created:  Scid vs PC   All files (games, tables and engines) - download from page

Greko 2015 - UCI chess engine. New version

Greko  - UCI chess engines  Author:  Vladimir Medvedev   Ratings: JCER=2507   Greko 2015 - download All files (games, tables and engines) - download from page

Stockfish 15112108b - new development version very strong chess engine UCI

Stockfish  - chess engines UCI Previous version chess engine Stockfish   Author compilation -  Mstembera Information on the compilation: Timestamp: 1448091007  Clean up RootMove less operator  This is used by std::stable_sort() to sort moves from highest score to lowest score.  1) The comment is incorrect since highest to lowest means descending.  2) It's more natural to implement a less operator using another less operator rather than a greater operator.  No functional change.  Resolves #504  JCER =3256   Stockfish 15112108b - download

SugaR PrO 1.2a - strong chess engine. New version

Sugar  - UCI chess engine Author -  Marco Zerbinati  Previous version chess engine Sugar   SugaR PrO 1.2a - download

Alfil 15.8 wins JCER Test Tournament Chess Engines, 2015.11.19 - 2015.11.21

180 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Arena 3.5 Book: Perfect 2015   Table created:  Scid vs PC   All files (games, tables and engines) -  download from page

Stockfish 15112108 - new development version very strong chess engine UCI

Stockfish  - chess engines UCI Previous version chess engine Stockfish   Author compilation -  Lucasart Information on the compilation: Timestamp: 1448090633  Fix TT comment and static_assert()  Comment is based on a misunderstanding of what unaligned memory access is. Here  is an article that explains it very clearly:  https://www.kernel.org/doc/Documentation/unaligned-memory-access.txt  No matter how we define TTEntry or TTCluster, there will never be any unaligned  memory access. This is because the complier knows the alignment rules, and does  the necessary adjustments to make sure unaligned memory access does not occur.  The issue being adressed here has nothing to do with unaligned memory access. It  is about cache performance. In order to achieve best cache performance:  - we prefetch the cacheline as soon as possible.  - we ensure that TT clusters do not spread across two cachelines. If they did,  we would need to prefetch 2 cachelines, which could hurt cache performance. 

Gnucheese 1.0 wins JCER Fritz Test Tournament, 2015.11.16 - 2015.11.17

180 games download      Temp :  3' + 3" Hardware:  Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz z 3,9 GB  system:  Windows 8.1 64 bit  GUI- Arena 3.5 Book: Perfect 2015   Table created:  Scid vs PC   All files (games, tables and engines) - download from page

Stockfish 15112107 - new development version very strong chess engine UCI (author: Marco Costalba)

Stockfish  - chess engines UCI Previous version chess engine Stockfish   Author compilation -  Marco Costalba Information on the compilation: Timestamp: 1448088530  Rewrite how threads are spawned  Instead of creating a running std::thread and  returning, wait in Thread c'tor that the native  thread of execution goes to sleep in idle_loop().  In this way we can simplify how search is started,  because when main thread is idle we are sure also  all other threads will be idle, in any case, even  at thread creation and startup.  After lazy smp went in, we can simpify and rewrite  a lot of logic that is now no more needed. This is  hopefully the final big cleanup.  Tested for no regression at 5+0.1 with 3 threads:  LLR: 2.95 (-2.94,2.94) [-5.00,0.00]  Total: 17411 W: 3248 L: 3198 D: 10965  No functional change. JCER =3256   Stockfish 15112107 - download