Chess Grandmaster Mihail Marin provides a repertoire for players with the black pieces based on the respected Spanish Opening, or the Ruy Lopez as it is sometimes called. Marin provides all the answers for Black after the opening moves 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4. This depth of chess expertise has rarely been published for a mass audience before, as grandmasters usually prefer to keep their secrets to themselves. The complexity of the material could have been daunting, but Marin is also a master of explaining profound ideas to a wide audience.