HIARCS Chess Software for PC Windows, Apple Mac and iPhone/iPad Mac HIARCS & Junior
World Championship winning computer chess software program & downloads for chess database, analysis & play on PC, Mac and iPhone


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HIARCS Chess Software for Mac OS X

Sigma Chess GUI and HIARCS were the chess GUI and engine of choice from Mac OS 10.4 until Mac OS 10.6. The Sigma Chess GUI is not supported under Mac OS 10.7 or later due to Apple dropping Rosetta support for PPC applications. You can read about our older Sigma Chess HIARCS and Junior products here.

Sigma Chess has been superseded by our Mac Chess Explorer application

Our powerful new Mac Chess application, HIARCS Chess Explorer,  provides World Class chess database, analysis and playing chess software programs for Macintosh computers (2007 or later) running OS X 10.6.8 or later including the latest 10.15 Catalina. Please see the HIARCS Chess Software Range for more details.

Any UCI chess engine can be used in HIARCS Chess Explorer for Chess on Apple Mac.

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"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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