The fourth volume of the Grandmaster Repertoire 1.e4 series provides a top-class repertoire against the Taimanov, Kan and Scheveningen systems, plus all the other Sicilian lines that were not covered in the previous volumes. Negi takes the established main lines and injects them with his own innovative ideas, making the repertoire a nightmare for Sicilian players and an essential addition to the library of every ambitious player.