Book Updates

You can update the opening book in HIARCS Chess with free updates from our website www.hiarcs.com

On your desktop computer please visit our opening book download page to download larger and stronger opening books for your device for free. You will find instructions there on how to install these larger opening books. If you would like the World's strongest opening book please consider our book subscription service, many of the World's strongest chess players use HIARCS books.