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

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Mac Chess Explorer  2019 SALE - SAVE 20% today!
World class chess database, analysis and playing program
The World Computer Chess Software Champion
Suitable for all players from beginners to the World Chess Champion with human-like play
Platform: Any Apple Macintosh™ computer running Mac™ OS X 10.7 (Lion), 10.8 (Mountain Lion), 10.9 (Mavericks), 10.10 (Yosemite), 10.11 (El Capitan) 10.12 (Sierra), 10.13 (High Sierra), 10.14 (Mojave) including Retina graphics.
Playing ability: Beginner (750 Elo) to World Chess Championship strength (3200+ Elo)†
with human-like play
GUI Languages: English, French, German, Italian, Polish, Portuguese, Russian and Spanish
[New!]November 2018 HIARCS Chess Explorer v1.9.3 now available

"Clearly the best chess software for the Apple Macintosh" - Chess Magazine

"I prefer using HIARCS Chess Explorer to Chessbase" - John Saunders, Chess Editor of Chess magazine for many years.


HIARCS Mac Chess Explorer is a revolutionary chess database, analysis and playing program for Apple Macintosh computers. It offers an innovative and intuitive new graphical user interface with powerful features together with the World Chess Software Champion HIARCS 14 chess engine. This unique combination is refreshingly easy to use and includes many new features for chess preparation, analysis and training for players of all abilities from beginner to Grandmaster. It has specialised features to help weaker chess players improve their chess including special realistic weakened opponents, a chess coach which can demonstrate mistakes, show improvements and help you improve your chess. Key features include:

bullet World class chess Graphical User Interface (GUI) with advanced database, analysis and game playing features. Compatible with any UCI chess engine.

bullet World Chess Software Champion HIARCS engine which is also the highest ever rated single processor chess program on the official SSDF rating list.

bullet Wide range of realistic handicap levels for players of all strengths with coach advice, opening training and measuring your playing ability in Elo as you play.

bullet Game analysis, learn openings, prepare for opponents with near instant searching, live game support and engine matches

bullet Packaged PGN databases (250,000+ games, ~1000 with annotations from IMs & GMs) and opening books with detailed statistics

bullet Online access to up to 1,000Gb of chess endgame tablebases and GM opening books.

For expert chess players HIARCS Chess Explorer for the Mac has many advanced features not seen in other chess software. The new features can help you analyse your chess games, improve your openings and prepare for your opponents. Now with engine v engine matches and live game presentation as used at the London Chess Classic tournament featuring the World's Elite players.

The product is available in two versions,

    Deep HIARCS Chess Explorer
     HIARCS Chess Explorer Graphical User Interface (GUI) [New!]November 2018 v1.9.3 now available!
        World Chess Software Champion Deep HIARCS 14 chess engine
        Defeated Deep Fritz 13 28-12 and Deep Rybka 4 24½-15½ on official independent SSDF rating list.
        Multi-core/multi-processor version of Deep HIARCS 14 for maximum performance
        GUI access to online content of 1,000 Gb of chess endgame tablebases and GM+ opening books
        Packaged games databases with game annotations from International Masters and Grandmasters
        Includes an exclusive game annotation from World Chess Champion Vishy Anand
        Email delivery, free updates in the 1.series and discounted upgrades

Click here to order Deep HIARCS Chess Explorer for Mac OS
    Price*: £74.95 / 82.95 / $99.95    SAVE 20% today  £59.96 / 66.36 / $79.96

    HIARCS Chess Explorer
        HIARCS Chess Explorer Graphical User Interface (GUI) [New!]November 2018 v1.9.3 now available!
        Single core version of HIARCS 14
        Packaged games databases with game annotations from International Masters and Grandmasters
        GUI access to standard online content
        Email delivery, free updates in the 1.series and discounted upgrades

Click here to order HIARCS Chess Explorer for Mac OS
    Price*: £37.50 / 41.50 / $49.95   SAVE 20% today  £30 / 33.20 / $39.96

"In summary, this is an excellent chess system that is suitable for players of all strengths. It has a lot of features, comes with a super-strong engine, and it is very easy to use. Highly recommended" - Joe Petrolito, Independent review, Australasian Chess.

The independent SSDF rating group report Deep HIARCS 14 defeated Deep Fritz 13 at tournament time controls by 28-12 (70% +149 Elo perf). Download games.


You can read an online JavaScript version of the manual for HIARCS Chess Explorer here.

Reviews of HIARCS Chess Explorer can be read here

HIARCS Chess Explorer has integrated, searchable and context sensitive help, a detailed user manual and 24 videos explaining how to use the software.
A list of updates and features since version 1.0 can be read here.

 Key feature sets:

bulletAdvanced Chess Graphical User Interface
bulletEasy packaged installation with auto install of chess engines
bulletHIARCS Chess Explorer GUI can use any UCI compatible Mac chess engine
bulletHigh quality piece set graphics (Retina enabled), board textures, artist designed icons
bullet Integrated features allow easy navigation of databases, games and players
bulletComprehensive manual and context sensitive help is included
bulletMulti-lingual support for English, French, German, Italian, Polish, Russian and Spanish
bulletHIARCS 14 World Chess Software Champion
bulletHIARCS 14 chess engine closely integrated with Chess Explorer GUI, engine can also be used any UCI compatible Mac GUI
bulletProvides incredibly strong analysis, advice and play - single or multiprocessor version available
bulletFamous for its human-like and entertaining attacking playing style
bulletNew human play realism on weaker levels
bulletWorld's strongest commercial tournament openings book accessible directly by the engine
bulletBook and position learning are built-in helping HIARCS improve as it plays or analyses
bulletFull set of configurable HIARCS UCI engine parameters
bulletThe chess engine generally used by World Chess Champion Vishy Anand
bulletfree updates in the HIARCS 14 series
bulletGame Explorer
bullet Comprehensive PGN database capabilities including simultaneous handling of multiple databases, searching and filtering by game header, openings and positions, ECO and opening name classification, game lists and much more. Max single PGN database size limit is 1.75 million games. Multiple databases can be loaded.
bullet Extensive game notation support with variations, embedded text comments, annotations, diagrams, chess symbols and chess opening naming – all of which can be viewed, added and edited. Intuitive game entry with automatic suggestions based on move quality. Game print facilities with diagrams.
bulletDownload remote PGN databases and watch live games as they happen - Update live games with your analysis and have the main game continuation merged as the game progresses. As used at the London Chess Classic by the World's strongest chess players.
bulletPlayer Explorer
bulletView players, their performances and favourite openings
bullet Navigate to games and openings of players directly from the player dossier
bullet Integrated and automated repertoire summaries for databases and players
bulletOpenings Explorer
bulletWorld’s first multi-source real-time chess tree with live updates and filtering
bullet Create an opening book tree of the moves of your games automatically
bulletGives new insight into chess openings from different perspectives
bullet Integrated access to a regularly updated online chess opening books
bulletHIARCS Book subscribers get integrated access to additional online content
bulletAll books and databases provide detailed opening statistics
bulletAnalysis Explorer
bulletAnalyse positions and games with multiple engines
bullet Multiple lines of analysis with history/statistics/preview boards, add analysis to game notation
bulletPost game analysis with any chess engine provides variation commentary
bulletCheck your own games for blunders and improvements
bulletLock engine analysis to a position while you navigate and modify the game
bullet Integrated online access to massive Terabyte endgame databases to give precise answers about endgame outcomes (about 250 DVDs worth of data!)
bulletCustom Game Play mode
bulletFor playing games against the computer using any UCI engine available
bullet Integrated HIARCS chess engine has realistic human-like handicap levels with set Elo strength settings suitable for players from beginner to Grandmaster.
bulletChoose rated or unrated games with time controls or casual play
bulletChoose start positions and even opening selection for opening practice
bulletThe game play mode has an integrated coach to point out mistakes, distinguish move quality, point out good puzzle moves and give hints
bulletEngine matches - set up matches and watch chess programs play each other
bulletPackaged Databases
bulletLatest top quality books containing statistics from GM games
bulletTop quality GM database of games with consistent official Fide player names
bulletAnnotated database of latest games including commentary from IM & GMs, even an exclusive annotated game by the World Chess Champion Vishy Anand.

HIARCS Mac Chess Explorer is a software download product. It is a complete chess application with Graphical User Interface, chess engines and chess games databases. The ultimate chess software for the Apple Macintosh.


HIARCS Chess Explorer is designed and developed by Michal Rudolf and Mark Uniacke.

HIARCS chess engines are designed and developed by Mark Uniacke.

Chess piece set images by Eric de Mund and Bruno Rizzuti based on fonts by Eric Bentzen and Armando Marroquin.

User Manual written by Mark Uniacke.

Language translations: English by Mark Uniacke, French by Alain Zanchetta, German by Christian Goralski, Italian by Bruno Rizzuti, Polish by Michal Rudolf, Portuguese by Claudio Zamana, Russian by Beglar Jobava and Spanish by Amador Cuesta.

Many games and annotations provided by www.chess.co.uk.

Beta testing and feedback by Ole Christensen, Chris Cook, Richard Fowell, Eric Hallsworth, Jonathan Naud, Matt Read, Bruno Rizzuti and Harvey Williamson and a number of other testers who prefer to remain private.

Move sounds by Ole Christensen.

Thank you to all those people (including those who prefer to remain private) who helped make HIARCS Chess Explorer a better product.

We also 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 HIARCS chess engines.


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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.   *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 © 1991-2019 Applied Computer Concepts Ltd. All rights reserved. Last modified: Friday January 04, 2019.
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