HIARCS Chess Explorer Online Book Access

World's Strongest and broadest chess opening books¹
Suitable for all players from beginners to the World Chess Champion
Massive references of over 123 million positions, moves and statistics with latest theory and play recommendations
Platform: HIARCS Chess Explorer for PC Windows or Apple Mac required to access books
Latest update: October 2024, 223rd update

One year access to Tournament, GM++ and Human Reference books from HIARCS Chess Explorer Opening Explorer view
Human Reference book 62,239,222 positions/moves, 2,714,675 variations based on 2,199,996 high quality human games
GM++ top human chess book: 29,129,691 positions/moves, 1,287,492 variations based on 1,121,337 GM human games
Tournament Book with 32,028,077 positions/moves and 1,875,823 variations based on 1,759,080 top quality games

HIARCS Chess Explorer and HIARCS Chess Explorer Pro provides online access to GM opening books as standard. If you want to enhance this to have access to the World Strongest Chess Opening Book 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 product can help, giving you the latest and strongest opening book straight into the Opening Explorer view of your HIARCS Chess Explorer application.

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

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 Online Book Access provides:

• Online access to the official HIARCS Human Reference and GM++ Books with latest human theory and play updated monthly
• Online access to the HIARCS Tournament opening book with quarterly updates in early December, March, June and September of each year
• Includes tournament and human reference books
• Moves analysed with statistics and up to date with latest chess opening theory
• Upon purchase you will receive a personal book license code which can be used in PC and Mac HIARCS Chess Explorer/Pro to enable direct access to the books in the Opening Explorer views
• Access lasts 1 year and is renewable
• Email delivery, discounted renewals

Prices*: £37.49 / €44.95 / $49.95
SALE 20% discount today £29.99 / €35.96 / $39.96

Order 1 Year Online HIARCS Chess Explorer Book Access

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

If you want to download the HIARCS tournament opening book in Chessbase CTG or HIARCS HCS format, you will need the HIARCS Tournament CTG Download product instead.