A free app for Android, by Chess King.

This course is intended for all levels of players, from beginners to experienced players.

You will be able to improve your chess knowledge, learn new tactical tricks and combinations, and consolidate the acquired knowledge into practice.

The program will give you hints, and explanations, and show you even striking refutations of the mistakes you might make.

Advantages of the program:

The program is designed to help you improve your chess skills and abilities, learn new tactics and strategies, and consolidate the acquired knowledge into practice.