A free program for Android, by Gianluca Cisana.

If you’re looking for an application that will help you learn and improve your chess skills, then you’ve come to the right place. Chess tactics puzzles is a mobile application for Android that has over 20,000 free chess tactics puzzle to learn while you play.

It shows you if you’ve made the correct move (using a check mark) or the wrong one (with an x mark). There are seven difficulty levels to choose from, so you can choose one that is most suitable for your ranking as a chess player.

All exercises are taken from games played in the most important chess tournaments in the world.