This is basically a 15 puzzle with bigger boards and different patterns. You can still use the very same strategies. I got bored after a few rounds since it's nothing too different or new. Also, your progress gets reset when you press go back to the level selection.
Have you tried levels from the second and third row? Those are not so simple to solve.
And the progress reset is completely weird. I'll check that out.
A good, solidly made brain game to test your strategy.