The aim of the game is to fill the whole square by selecting the small buttons in it.
Each button has two possible successors.
Some buttons are indicated as clue to follow the correct sequence. By touching the buttons you can see the next possibilities.
All you have to do is to follow the correct sequence.
If you are not sure about the correct successor you can get hints. The game shows you the correct one. If you have followed a wrong sequence the "hint button" corrects it as well.

You can change the matrix size from 3 x 3 to 6 x 6.

As you finish the games, you gain experience and your skill changes from novice to expert.

Relax by playing the game and practice your brain.