Chess Tactics. Sicilian Def. 1 is a course designed for club and intermediate players looking to improve their skills in the Sicilian Defense. The course focuses on the Dragon variation, the Najdorf variation, the Scheveningen variation, and the Richter Attack, providing a deep overview of these sharp and decisive variations.

With 200 examples and 630 exercises, this course offers a comprehensive learning experience. It is part of the Chess King Learn series, which covers tactics, strategy, openings, middle game, and endgame, catering to players of all levels.

The program acts as a coach, giving tasks to solve and providing hints, explanations, and refutations for mistakes. It also includes a theoretical section that allows users to interactively learn and practice moves on the board.

Key advantages of the program include high-quality examples, varying levels of complexity, different goals in the problems, and the ability to play out positions against the computer. The program also features a structured table of contents and tracks the player's rating (ELO) during the learning process.

The course includes a free part, which allows users to test the program before unlocking additional topics. It is available offline and is compatible with both iPhone and tablets.