Fill the square!

Fill the square! is a simple puzzle game. Tap wisely the next free (green) spot until you fill the entire square. The rules are very simple: you can move horizontally and vertically jumping 2 squares, diagonally jumping 1 square. At each turn the "legal" squares are painted green. Choose wisely among them to fill the square.
5x5 easy mode is always enabled. Complete it to unlock 6x6. Champion mode (10x10) is unlocked by 6x6 completion.
Have fun!