This course is aimed at club and intermediate players and presents the theory and playing hooks in the most sharp and deciding variations of the Sicilian Defense developing after moves 1. e4 c5 2. Nf3 Nc6: the Lasker variation, the Paulsen variation, the Labourdonnais variation, the Simagin variation and the Boleslavsky defense. The course presents a deep theoretical and practical overview of the actual variations, featuring 300 examples. Numerous new exercises provide a great opportunity to reinforce your knowledge: 300 exercises in total for all variations after 1. e4 c5 2. Nf3 Nc6.