Connect your iOS device to your computer.Unzip the downloaded book onto your desktop making a note of its location.

To update the opening book on your device please follow these steps: Book customers should refer to the customer download page for our full tournament book in HBG format. IPhone, iPod Touch or iPad customers can now download custom books from this page for their device. Under no circumstances are the books to be hosted on another website without the prior express written permission of Applied Computer Concepts Ltd. Please note these books are free for you to download and use for your personal use only. They are the strongest available opening books and are at least 100 Elo stronger than the free chess opening books hosted here. HIARCS professional books in our chess opening book download product are many times larger with the latest human, correspondence and computer games. To access the latest and strongest HIARCS Chess Opening Books please purchase to our opening book update product. We will be updated periodically as new books are released.

Here are the free HIARCS Chess Opening Books.