The Ruy Lopez is one of the most popular openings of all time. It is a frequent guest in the games of players around the world from novice to Grandmaster. As a result of the increased power of analysis engines the theory of the Ruy Lopez has greatly expanded. Lines that did not exist years ago have been fully developed, supported with extensive analysis, and incorporated into the repertories of top players. Despite this exponential growth in theory, I believe that when armed with sound knowledge it is possible to pose certain practical problems for Black. The purpose of this book is to provide you with detailed and clear explanations of the intricacies of the Ruy Lopez.