World Championship winning computer chess software program & downloads for chess database, analysis & play on PC, Mac and iPhone

HIARCS 13.2 & Deep Junior 12.5 chess engines
World Class chess software engines for Apple Macintosh computers.
Now you can have a Super GM on your Apple Macintosh!
The Sigma Chess GUI is not supported under Mac OS 10.7 or 10.8 due to Apple dropping Rosetta support for PPC applications.

HIARCS has been updated! For our superb new Mac Chess application see the HIARCS Chess Explorer product.

The following pages apply to our older product which is applicable if you have an older PowerPC based Macintosh which can run Sigma Chess HIARCS or Deep Junior. Both HIARCS 13.2 and Deep Junior 12.5 can be used in HIARCS Chess Explorer

We are proud to present our chess engines, winners of multiple world championship titles - the strongest HIARCS and Deep Junior chess engines ever on Apple Macintosh computers. HIARCS and Deep Junior are UCI chess engines which run inside any UCI compatible chess GUI. Engines to choose from:

The HIARCS 13.2 and Deep Junior 12 .5 chess engines are compatible with Mac OS 10.5 and later including the new Mac OS 10.7 Lion release. You can use either of the chess engines in any UCI compatible chess graphical user interface (GUI). For OS 10.6.8 or earlier you have the option of using the renowned Sigma Chess 6.2.1 chess GUI.

Screen shots refer to HIARCS in the Sigma Chess GUI on OS 10.6: Click image to see full size

Key features of each engine can be seen below...

HIARCS 13 series
Suitable for all players from beginners to the World Chess Champion
Universal binary HIARCS chess engine can run at maximum speed on Intel and PowerPC hardware
Platform: Intel or PowerPC based Apple Macintosh™ computers running Mac™ OS X 10.4 or later including Mac OS Lion
Playing ability: Complete beginner (750 Elo) to World Chess Championship strength (3100+ Elo)† with human-like play
HIARCS chess software has long been established among the world's premier chess playing engines. Now the latest version 13.2 takes the HIARCS series of chess engines to a new level of chess understanding and chess strength. Never before has HIARCS been so accurate, searched so deep or been so strong!  The unique and entertaining attacking style has been enhanced and extended so HIARCS is often more decisive in its attacking approach which includes direct king attacks. The chess knowledge has naturally been improved and the search is deeper and hence Hiarcs 13.2 is more capable than any of its predecessors.

Prices from*: £29.95 / €39.95 / $49.95      £22.46 / €29.96 / $37.46  (limited time 25% discount)   *VAT may be applicable for European Union residents.

Find out how to buy HIARCS 13 here.

Deep Junior 12 series
Suitable for all players including the World Chess Champion
Platform: Intel based Apple Macintosh™ computers running Mac™ OS X 10.5 or later including Mac OS Lion
Playing ability: Beginner (1250 Elo) to World Chess Championship strength (3050+ Elo)†
Deep Junior has long been established as one of the world's premier chess playing engines and has won many World Computer Chess titles. Deep Junior 12 is as aggressive and attacking as ever with a wonderful sense for king attacks and dynamic play - an essential partner for any attack minded chess player. The Deep Junior chess program is unique in its understanding of compensation and therefore chess players of all standards can use Junior to gain a deep insight into their games and prepare new exciting lines involving sacrifices with confidence. The chess knowledge has naturally also been improved so the Deep Junior 12 series is the strongest ever Junior and capable of supporting up to 40 cores simultaneously for the ultimate performance.

Prices from*: £49.95 / €59.95 / $79.95    £37.46 / €44.96 / $59.96  (limited time 25% discount)   *VAT may be applicable for European Union residents.

Find out how to buy Deep Junior 12 here.

*Endgame tablebases are a separate purchase or download.

Sigma Chess 6.2.1
Platform: Intel or PowerPC based Apple Macintosh™ computers running Mac™ OS X 10.4, 10.5, 10.6 (not 10.7/Lion)
Sigma Chess HIARCS is a high quality Chess Pro GUI integrated with two World Class chess programs, HIARCS and Deep Junior. Giving Mac OS X owners the strongest combination of chess engine, best features for analysis, preparation and play on both Intel and PowerPC (G3/G4/G5) Macintosh computers.

Sigma Chess, HIARCS & Deep Junior are software download products.
HIARCS 13 and Deep Junior 12 are chess engines and are compatible with Mac OS 10.7 (Lion)
The Sigma Chess GUI will not be supported under Mac OS 10.7 Lion due to Apple dropping Rosetta support for PPC applications. Other UCI capable GUIs are available for example ExaChess, Chess X, Jose, Stockfish etc.
 

The MP Multiprocessor and Deep versions are strongly recommended for Intel based Macs as they have multiple processor cores and the MP/Deep versions can take full advantage of them.

Your support of HIARCS and Deep Junior chess engines on the Mac enable us to provide you with even better Apple Macintosh chess products in the future. Thank you for your support!

HIARCS Acknowledgements

Special thanks to Ole Christensen (Sigma Chess) for his superb Sigma Chess software, quite simply the best chess GUI for the Macintosh, it will be sadly missed on Lion.

Engine author: Mark Uniacke
Opening book authors: World Class GM, IM Harvey Williamson, Mark Uniacke and Eric Hallsworth

A big thank you to Richard Fowell for his superb beta testing and suggestions over the years which have helped make the Sigma Chess HIARCS product better.  Richard has helped test HIARCS Mac versions since the first HIARCS chess product for the Macintosh way back in 1995 and his detailed knowledge and thorough testing is truly outstanding.

These people have helped make the product the best it could be.  THANK YOU!

SigmaChess is copyright (c) Sigma GameWare.  

We thank Eugene Nalimov and Andrew Kadatch for their kind permission to use their access code (copyright (c) Eugene Nalimov) and decompression code (copyright (c) Andrew Kadatch) for Nalimov tablebases in the HIARCS chess engine.

Deep Junior Acknowledgements

Thank you to GM Alon Greenfeld for his contribution of the excellent Deep Junior Opening Book.

Engine authors: Amir Ban and Shay Bushinsky
Opening book author: GM Alon Greenfeld

Thanks also to a number of other supporters who prefer to remain incognito.

Photograph of Kasparov and Deep Junior by John Henderson, thank you.

We thank Eugene Nalimov and Andrew Kadatch for their kind permission to use their access code (copyright (c) Eugene Nalimov) and decompression code (copyright (c) Andrew Kadatch) for Nalimov tablebases in the Deep Junior chess engine.

"generally I use HIARCS." - Five time World Chess Champion Vishy Anand, in a recent interview when asked what chess program he uses to analyse with
 
"HIARCS is much better positionally than Deep Blue." - Garry Kasparov 1997 (after game 5 of the rematch)

World Chess Champion, Vishy Anand, used "Powerful" HIARCS machine in preparations for his 2010 & 2012 world title matches

"This level of service is one other big reason to buy HIARCS." - John Jackson

† Highest performance reached depends on computer used. Computer Chess Software with world class chess engine playing strength.
HIARCS is designed and developed by Mark Uniacke in England.

*VAT and local sales tax may be applicable. Prices given in GBP, USD and EUR are subject to change without notice.
Other currencies are subject to conversion rates from GBP.

HIARCS is a trademark of Applied Computer Concepts Ltd. All other product trademarks acknowledged.
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