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 and play on PC, Mac and iPhone

HIARCS Home What's New HIARCS? Mac Chess Explorer PC Chess Explorer Opening Books Mac Deep Junior PC Deep Junior HIARCS iPhone Chess HIARCS iPad Chess ICCF Chess HIARCS Mailing List

horizontal rule


HIARCS Chess Software for Mac OS X
World Class chess software engines for Apple Macintosh computers.

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 10.8 due to Apple dropping Rosetta support for PPC applications.
If you are interested in our software for an older Macintosh please email
. You can read about our older Sigma Chess HIARCS and Junior products here.

Our superb 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, 10.7 or 10.8. Please see the HIARCS Chess Explorer product.

Any UCI chess engine can be used in HIARCS Chess Explorer.

horizontal rule

"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.   *VAT may be applicable for customers resident in the European Union.
Prices are given in Pounds Sterling, US dollars and Euros. Prices are subject to change without notice.
Purchases in other currencies will be subject to conversion rates from Pounds Sterling (GBP).

World class Palm, PC Chess, Mac Chess, Pocket PC and iPad, iPhone Computer Chess Software with innovative features and chess playing strength
HIARCS Computer Chess Engines are designed and developed by Mark Uniacke in England.
HIARCS is a trademark of Applied Computer Concepts Ltd. All other product trademarks acknowledged.
Copyright 1991-2016 Applied Computer Concepts Ltd. All rights reserved. Last modified: Monday February 01, 2016.
the HIARCS Team by email:  .  Read our Privacy Policy here