This is a companion app for ‘Chess Book Study’ app. Together with Chess Book Study, you can read your pdf or djvu chess books and make moves on the accompanying board!Forget carrying your bulky books!This app cannot be launched on its own. Please install Chess Book Studyhttps://play.google.com/store/apps/details?id=com.pereira.booknboardNote:—–1. This is based on the open source EBookDroid apphttp://code.google.com/p/ebookdroid/2. The original EBookDroid app is herehttps://play.google.com/store/apps/details?id=org.ebookdroid&hl=en