Chess Software Apps for Mac and PC

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

Welcome to HIARCS Chess Software, the home of HIARCS Chess Explorer products for Mac and PC offering chess engines, chess game databases, opening books, analysis and chess game play with the HIARCS chess engine - a multiple World Championship winning computer chess program, three time World Chess Software Champion and World Computer Chess Champion. HIARCS is the chess program generally used by five time World Chess Champion Vishy Anand.

There are HIARCS Chess Explorer apps and engines for all macOS and Windows versions since 2009 including the latest macOS Monterey with Intel or Apple M1/Pro chip silicon and Windows 11. We also offer the unrivalled HIARCS tournament and GM reference chess opening books with latest chess theory and the Deep Junior chess engine, a many time World Computer Chess Champion.

Our chess software is renowned for its high quality, human like chess play, realistic weaker levels and elite chess performances over the last 30 years from mobile devices to multi-core laptop and desktop computers. You can purchase the latest HIARCS Chess Explorer Pro, opening books and HIARCS and Deep Junior chess engines direct from the developers only on this website.

HIARCS is proud sponsor of the International Correspondence Chess Federation.

HIARCS Chess Explorer Pro

The ultimate chess database, analysis and playing software for Mac and Windows

Mac
HIARCS Chess Explorer Pro Logo
HIARCS Chess Explorer Pro for macOS
  • New HIARCS 15 Engine - 3300+ Elo†
  • Runs on macOS Mojave, Catalina, Big Sur and Monterey
  • Supports Intel and M1, M1 Pro and M1 Max
  • Supports PGN, HCE, EPD, PDF, EPUB, HTML
    Unlimited games, subject to memory
  • Reads Chessbase CBH/CBV/CTG
  • Prices from* £58.29 / €69.95 / $79.95
PC
HIARCS Chess Explorer Pro Logo
HIARCS Chess Explorer Pro for PC
  • New HIARCS 15 Engine - 3300+ Elo†
  • Runs on all 64 bit editions of Windows 7, 8, 10 and 11
  • Supports Intel and AMD based PC's
  • Supports PGN, HCE, EPD, PDF, EPUB, HTML
    Unlimited games, subject to memory
  • Reads Chessbase CBH/CBV/CTG
  • Prices from* £58.29 / €69.95 / $79.95

New HIARCS 15 chess engine, huge advance on HIARCS 14 WCSC
Suitable for all players: Beginners to the World Chess Champion with human-like play
Playing Strength: Beginner to World Chess Champion strength and beyond (3300+ Elo)†
Languages: English, French, German, Italian, Polish, Portuguese and Spanish

HIARCS Chess Explorer Pro is a new highly advanced chess database, analysis and playing program for PC Windows and Apple Mac computers. It offers a very powerful user interface with the strongest ever HIARCS chess engine and world class chess database features. This unique combination offers easy to use features managing chess databases, preparation, analysis, play and training for players of all abilities from beginner to Grandmasters and beyond.

Key features include:

Prices starting from*: £58.29 / €69.95 / $79.95

HIARCS Chess Explorer Pro is a software download product fulfilled immediately by email with online activation. It is the ultimate chess application for Mac and PC with world class chess user interface, chess engines and chess games databases, opening books and endgame tablebases.

Find out more about HIARCS Chess Explorer Pro

PC screenshot Mac screenshot of the menu mac screenshot of hiarcs
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HIARCS Chess Explorer

The classic chess database, analysis and playing software for Mac and Windows

World Chess Software Champion HIARCS 14 Chess Engine
Suitable for players: Beginners to the World class chess players
Playing ability: Beginner to World Champion strength (3100 Elo)†
Language: English, French, German, Italian, Polish, Portuguese and Spanish

HIARCS Chess Explorer is the established classic chess software for PGN chess database, analysis and game playing on Apple Mac and PC Windows. It offers an intuitive graphical user interface together with the World Chess Software Champion HIARCS 14 chess engine. It includes many features for managing your chess databases, preparation, analysis and play for players of all abilities from beginner to Grandmaster.

Key features include:

Price*: £44.95 / €49.95 / $59.95

HIARCS Chess Explorer is a software download product fulfilled immediately by email. It is the established classic desktop chess application for Mac OS and PC Windows with an advanced chess user interface.

Find out more about HIARCS Chess Explorer




Recommended
Online Book Logo
Online Book Access
  • Official HIARCS Human Reference and GM++ Online Books - Monthly Updates
  • HIARCS Tournament Opening Book - Quarterly Updates
  • Over 108 million positions and stats analysed
  • Keep up to date with latest theory and play advice
  • Renewable 1 Year Subscription
CTG Book Logo
CTG Opening Book
  • Latest HIARCS downloadable Tournament Chess Opening Book in CTG, HBG and HCS Formats
  • Quarterly Updates usually in late July, October, January and April
  • Up to date with the latest opening theory
  • Download and use with HIARCS Chess Explorer Pro
  • Renewable 1 Year Subscription

Online Book Access

The official HIARCS Human Reference, GM++ and Tournament Books

World's Strongest and Broadest Chess Opening Books†
Over 108 million positions, moves and statistics with the latest theory and play advice
Platform: HIARCS Chess Explorer or Pro for PC Windows or Apple Mac Required

HIARCS Chess Explorer Pro and HIARCS Chess Explorer provide online access a GM Opening Book as standard. If you want the enhance this to have access to the world's strongest chess opening book collection and a Human Reference of opening play, this is the product for you. Many chess players need to remain up to date with the latest chess opening theory throughout the year and that is where our online book access subscription can help, giving you the latest opening theory and play recommendations straight into the Opening Book Explorer View of your HIARCS Chess Explorer/Pro product.

For many years, HIARCS has had the strongest opening book available and it keeps getting stronger with every release. We have even supplied the HIARCS Tournament Chess Opening Book to help five time World Chess Champion, Vishy Anand's team prepare for matches and tournaments.

Subscription to the Online Book Access provides:

  • Online access to Human Reference and GM++ books with latest theory updated monthly
  • Online access to the HIARCS Tournament Opening Book, Oct, Jan, April and July updates
  • Over 108 million positions deeply analysed, hundreds of CPU years!
  • Play recommendations with statistics and up to date latest chess theory
  • Personal book license for use in HIARCS Chess Explorer/Pro on PC or Mac
  • Turn the Opening/Book Explorer into the best chess opening resource
  • Subscription lasts 1 year and is renewable

You require HIARCS Chess Explorer or HCE Pro to access the online book subscription. If in addition you want the downloadable HIARCS Tournament Opening Book in Chessbase CTG or HIARCS HCS format you need the HIARCS Chess Opening Book Subscription instead

Prices starting from*: £36.95 / €41.65 / $49.95

Find out more about Online Chess Openings Subscription

CTG Opening Book

Downloadable CTG, HBG and HCS chess opening books

World's Strongest and Broadest Tournament Chess Opening Book†
Platform: PC Windows, Mac OS X, iPhone/iPad
Required: HIARCS Chess Explorer Pro or Chessbase GUI or HIARCS Chess for iPad/iPhone

HIARCS Chess Explorer Pro and HIARCS Chess Explorer comes with its own chess opening book at the time of the release. However, many chess players need to remain up to date with the latest chess opening theory throughout the year and online chess engine players like to have the latest, broadest and strongest chess opening books. For many years HIARCS has had the strongest opening book available and it keeps getting stronger with every release. We have even supplied the HIARCS tournament chess opening book to help many time World Chess Champion, Vishy Anand's team prepare for matches and tournaments.

The latest HIARCS tournament opening book is available in Chessbase CTG format (for PC), HIARCS' own HCS format for Mac and PC with regular updates for subscribers to the HIARCS Chess Opening Book Subscription product. Improvements per year have averaged about 40 Elo points.

Subscription to CTG Opening Book provides:

  • Latest downloadable HIARCS tournament chess opening book in CTG, HBG and HCS formats
  • Quarterly updates usually in late July, October, January and April
  • Online access to Tournament, Human Reference and GM+ books for HIARCS Chess Explorer/Pro
  • Up to date with the latest chess opening theory from human and computer play
  • Downloading the latest HIARCS opening book and many previous opening books!
  • Unrivalled track record of opening book delivery and improvements since 2010
  • Subscription lasts 1 year and is renewable

You require either the HIARCS Chess Explorer, HCE Pro (direct access), or a Chessbase/Fritz GUI for CTG, HIARCS chess engine for HCS or HIARCS Chess on iPhone/iPad for HBG. The HCS format book can be used by HIARCS engines on Mac and PC.

Prices starting from*: £49.95 / €59.95 / $67.95

Find out more about CTG Opening Book Subscription

† Computer Opening Books contain positions, moves, statistics and play recommendations, they do not include games and textual comments.



HIARCS iPhone App Logo
HIARCS Chess for iPhone
  • World Class Chess Software for iPhones
  • Suitable for chess players from beginners to strong Grandmasters
  • Load, save or delete games to/from PGN databases
  • Portrait view only
  • Opening book and databases included
  • 8 Piece sets and 9 colour schemes
HIARCS iPad App Logo
HIARCS Chess for iPad
  • World Class Chess Software for iPads
  • Suitable for chess players from beginners to strong Grandmasters
  • Load, save or delete games to/from PGN databases
  • Portrait and Landscape views with extra analysis
  • Large HIARCS tournament opening book
  • 8 Piece sets and 9 colour schemes

HIARCS Chess for iPhone

World Class Chess Software for iPhone

Suitable for beginner to Grandmaster with human-like play, energy saving handicap levels and coaching
Platform: iPhone (iOS 9.0 or later) - all editions - inc. Retina graphics
Playing Level: Beginner (800 Elo) to Strong Grandmaster (2950+ Elo)†

HIARCS is a multiple World Championship winning chess program that has proven to be the strongest chess program on Palm and Pocket PC devices and is now available for the iPhone.

This power enables your iPhone to play chess like a super Grandmaster, analyse games and chess problems with you, while offering numerous features to help you learn and improve as you play with HIARCS.

HIARCS Chess for iPhone has a full range of realistic weaker opponents and playing styles catering for all players from absolute beginners to professional Grandmasters. On the weaker playing levels HIARCS will make human-like mistakes appropriate to the level of play and this together with the in-built coach watching allows you to learn and improve quickly. HIARCS can even adjust its playing strength as you improve and learn more.

In addition it offers these great features:

  • Super strong chess program on iPhone - genuine strong super GM level
  • Suitable for all with low energy settable Elo levels and opponents
  • Play white or black, analyse or watch game with settable chess clock for timed play
  • Rates your play in Elo, a coach warns about mistakes with hint moves and takebacks
  • Friendly user interface with 8 piece sets, 9 colour schemes and figurine notation
  • Access strong HIARCS tournament book with move stats and opening names displayed
  • Exchange PGN databases, Load/Save/Email games, set up positions, navigate through games

Find out more about HIARCS Chess for iPhone

HIARCS Chess for iPad

World Class Chess Software for iPad

Suitable for beginner to Grandmaster with human-like play, energy saving handicap levels and coaching
Platform: iPad (iOS 9.0 or later) - all editions - inc. Retina graphics
Playing Range: Beginner (800 Elo) to Strong Grandmaster (2950+ Elo)†

HIARCS is a multiple World Championship winning chess program that has proven to be the strongest chess program on Palm and Pocket PC devices and is now available for the iPad.

This power enables your iPad to play chess like a super Grandmaster, analyse games and chess problems with you, while offering numerous features to help you learn and improve as you play with HIARCS.

HIARCS Chess for iPad has a full range of realistic weaker opponents and playing styles catering for all players from absolute beginners to professional Grandmasters. On the weaker playing levels HIARCS will make human-like mistakes appropriate to the level of play and this together with the in-built coach watching allows you to learn and improve quickly. HIARCS can even adjust its playing strength as you improve and learn more.

In addition it offers these great features:

  • Super strong chess program on iPad - genuine strong super GM level
  • Suitable for all with low energy settable Elo levels and opponents
  • Play white or black, analyse or watch game with settable chess clock for timed play
  • Rates your play in Elo, a coach warns about mistakes with hint moves and takebacks
  • Friendly user interface with 8 piece sets, 9 colour schemes and figurine notation
  • Access strong HIARCS tournament book with move stats and opening names displayed
  • Exchange PGN databases, Load/Save/Email games, set up positions, navigate through games

Find out more about HIARCS Chess for iPad



HIARCS Forum

For announcements, general discussions and Tournament Results & Games please visit HIARCS Forums at www.hiarcs.net