Most of these chess ebook downloads feature state of the art ChessBase technology. That means no more fumbling to find a page or setting up the board, because everything is a click away. Chess e-books for download are like regular paper books...only better! Now opening manuals, tournament books, even past classics can be presented with fully integrated text and graphics. The chess software you need to enjoy your e-book is the ChessBase program or any of their chess playing programs, like Houdini or even the free ChessBase Reader found here. Chess Opening Wizard e-books require a download from Bookup. You can get that here:   If you are looking for ebooks for Apple products you will need the Chess Viewer app which can be found here. All e-book saes are final.