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 d6 3. d4: the Dragon variation, the Najdorf variation, the Scheveningen variation and the Richter Attack. The course presents a deep overview of the actual variations, featuring 200 examples and 630 exercises. The course will be useful to all chess players employing the Sicilian Defense on either w