HIARCS Chess Software for PC Windows, Apple Mac and iPhone/iPad 1983: Source Code
World Championship winning computer chess software program & downloads for chess database, analysis & play on PC, Mac and iPhone


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HIARCS 5 (0.5) Source code

This is the source code of HIARCS 5 (known as version 0.5 to avoid confusion with commercial HIARCS versions of the 1990s).

This source code dates from March 1983 and is the source code of HIARCS 0.5 as submitted as an A Level project at Welwyn Garden City College. The source is in the Basic+ language and ran on a PDP11/70 located in Hatfield Polytechnic Campus, Hatfield.

The source is on a dot matrix print out and the pages have been scanned in and are presented here as jpeg images. Click on the image you want to see. The b listings are a landscape view of the listing page where some of the lines were too long.

Resurrect HIARCS 0.5 and win a Prize!

I must admit to be intrigued to know if some one could get this source running again on PC or Mac. There are a number of prizes on offer for anyone who can successfully get this oldie chess program running again!  You can read more about the Resurrect HIARCS prize competition here.

If you need clarification on part of the listing because the scanned image is not clear, please email Mark Uniacke on .

Source code by images are below...


Listing 0      Listing 0b     Listing 1     Listing 2


 Listing 3     Listing 4     Listing 5      Listing 6


Listing 7     Listing 8     Listing 9      Listing 10


Source is copyright (c) 1980-2007 Mark Uniacke. All rights reserved.

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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.

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