This chess training app focuses on sharp variations in Open Games, ideal for club and intermediate players. It covers the theory and key strategic points arising from the opening 1. e4 e5 2. Nf3 Nc6 3. Bc4, including an overview of common variations and 630 exercises for practice.

This app is part of the Chess King Learn series (https://learn.chessking.com/), a comprehensive chess learning system. The series offers courses on tactics, strategy, openings, middlegame, and endgame, catering to all skill levels, from beginners to professionals.

Improve your chess skills, learn tactical tricks, and put your knowledge into practice with this interactive course. The app acts as a personal coach, providing exercises, hints, explanations, and detailed refutations of common mistakes.

The app features:

• High-quality, verified examples.
• Detailed move input required.
• Exercises with varying difficulty levels.
• Diverse problem-solving objectives.
• Hints and error refutations.
• Play against the computer.
• Interactive theoretical lessons.
• Organized table of contents.
• ELO rating tracking.
• Customizable test modes.
• Bookmarking functionality.
• Tablet-optimized interface.
• Offline access.
• Multi-device syncing via a free Chess King account (Android, iOS, and Web).

A free version lets you test the app's functionality with fully playable lessons. Unlock additional topics after experiencing the free trial. Topics include:

1. Chess Tactics in Open Games

   • Giuoco Piano (Italian Game)
   • Evans Gambit (4. b4)
   • Two Knights Defense

2. Advanced Chess Tactics in Open Games

   • Giuoco Piano (Italian Game)
   • Evans Gambit (4. b4)
   • Two Knights Defense