A free app for Android, by Chess King.

This is a course for improving your chess knowledge and learning new tactical tricks and combinations. The program will give you hints, explanations, and show you even striking refutations of the mistakes you might make.

The course is designed to improve your chess knowledge and help you to learn new tactical tricks and combinations. It will teach you to use different types of strategies and tactics to win.

The program is designed to be a coach for you, who will give you tasks to solve and help you to solve them if you get stuck. It will give you hints, explanations, and show you even striking refutations of the mistakes you might make.