This study considers the Modern Richter-Rauzer in the ever popular Sicilian Defense. These lines are those without 6....e6 followed by Bf8-e7. This variation has been played by Saemisch, Larsen, Stein, Tal, Averbakh, Hartston, and other leading masters. It is a fully playable system with activity for both sides. This book incorporates recent developments in the theory of the lines, and will be valuable for study by the serious tournament player.