Dangerous Weapons: The Ruy Lopez (Ebook) by John Emms, Tony Kosten, and John Cox, Everyman Chess 2013, ChessBase file format $21.95
The Ruy Lopez is the Cadillac of chess openings, offering numerous options for either side. Whether you prefer to play something sharp or solid, the Spanish offers you a plethora of choices. Over the past few years there have been quite a number of books covering the Ruy Lopez, but none quite like this offering from Everyman Chess. The beauty of Dangerous Weapons: The Ruy Lopez is that it is chock full of ideas for both sides.