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

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Free Opening Books

HIARCS Chess Opening Books
The World's strongest and widest range of computer chess opening books¹.
Suitable for all players from beginners to the World Chess Champion
Platform: PC Windows, Mac OS X, iPhone/iPad
April 2017 update now available

"I subscribe to your Powerbook now and I'm pretty impressed by it, I use it all the time in my chess teaching. As far as I know it is the best publicly available book."
Larry Kaufman, Grandmaster and World Senior Chess Champion.

Background

Each HIARCS chess product comes with its own digital chess opening book with the latest chess opening theory at the time of the release of the particular product. 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 and strongest chess opening books.

For many years HIARCS has had the strongest opening book available and it keeps getting stronger with every quarterly release. We even supplied the HIARCS tournament chess opening book to help World Chess Champion, Vishy Anand's team prepare for his recent World Championship match in which he was so successful.

We now find our book is sought after by many of world's strongest human players for both over the board and correspondence play - an essential resource for the serious chess player.

The following table explains the different HIARCS opening books available and in what package they can be found. Click the underlined links to view the products in more detail.

Opening book Based on Positions Accessed using Available in product Location format
Local book Grandmaster over the board games 900,000 HIARCS Chess Explorer HIARCS Chess Explorer (Mac & PC) Local (included with Chess Explorer) HBS
GM Grandmaster over the board games 2,121,620 HIARCS Chess Explorer HIARCS Chess Explorer (Mac & PC) Online FHBS
GM+ Grandmaster over the board and correspondence games 4,350,244 HIARCS Chess Explorer Deep HIARCS Chess Explorer (Mac & PC) Online FHBS
Hiarcs14b (engine) Strong human and computer games 7,359,978 (moves only, no statistics) HIARCS 14 and Deep HIARCS 14 chess engines HIARCS 14 engines or HIARCS Chess Explorer (Mac & PC) Local (included with Chess Explorer) HCS
H-Reference

 

All known human master games 44,931,850 HIARCS Chess Explorer Online Tournament Book Access Subscription

AND

HIARCS Chess Opening Subscription

Online FHBS
Tournament book Strong human and computer games 19,598,165 HIARCS Chess Explorer Online Tournament Book Access Subscription

AND

HIARCS Chess Opening Subscription

Online FHBS
Hiarcs14v(Chessbase ctg) Strong human and computer games 19,598,165 Chessbase compatible GUIs, e.g. Chessbase, Fritz or Aquarium HIARCS Chess Opening Subscription Local (download book) CTG
Hiarcs14v (13.303) (iPhone/iPad) Strong human and computer games 19,598,165 HIARCS Chess for iPhone or iPad HIARCS Chess Opening Subscription Local (download book) HBG
Hiarcs14v (engine hcs) Strong human and computer games 19,598,165(moves only, no statistics) HIARCS 14 and Deep HIARCS 14 chess engines HIARCS Chess Opening Subscription Local (download book) HCS

All books unless stated otherwise contain moves and detailed statistics including game results, Elo ratings, performances, year and play recommendations.

Purchase HIARCS Chess Explorer for a World class chess database, analysis and playing user interface, this includes the essential local and GM books (Deep HCE customers also get the GM+ book)

HIARCS Chess Explorer customers can subscribe to the Online Book Access Subscription a 1 year online access subscription to our Human Reference and Tournament books using HIARCS Chess Explorer.

Users of Chessbase software may be interested in our HIARCS Chess Opening Subscription a 1 year download subscription which includes the renowned HIARCS tournament book in multiple formats for use in Chessbase User Interfaces and allows online access to the Tournament and H-Reference book from HIARCS Chess Explorer.

Each book subscription includes quarterly updates to the books with the latest theory being played including new novelties. Improvements per year have averaged about 80 Elo points. Over the course of a year the opening book may contribute more to chess strength improvement than the increase in chess engine strength.

"I have tried the book in several configurations. Means in autoplayer, games at home, at FICS chess server and at playchess. I am very impressed. My feedback: This book is a masterpiece ! Congratulations" - Clemens (Dec 2010)

"I agree. Clearly a lot of work has been put into this book to provide strength in depth so the openings hold up in different time control games.
Excellent value for money in its own right but with a quarterly update ... just superb."
- PeterG (Dec 2010)

¹ Computer chess opening books contain positions, moves, statistics and playability recommendations, they do not include textual comments.

Please note the HIARCS opening books are for your personal use only. Under no circumstances are the books to used for commercial purposes, hosted on another website or used in official tournaments without the prior express written permission of Applied Computer Concepts Ltd. All HIARCS books are copyright © 1991-2017 Applied Computer Concepts Ltd. All rights reserved.

Acknowledgements

The HIARCS opening books are prepared and managed by Mark Uniacke.

Assistance is provided by Senior International Master Harvey Williamson and Computer Chess Expert Eric Hallsworth. Further input is provided by a number of top chess players and subscribers to the book. Thank you - your help enables a larger, stronger and better opening books.

THANK YOU!
 

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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 © 1991-2017 Applied Computer Concepts Ltd. All rights reserved. Last modified: Thursday March 30, 2017.
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