There's special pieces that enable the passage by all the other cells of the same color; use them to open your way, but you can go through them just once! Your goal is to reach the final position. There's 30 levels (10 easy levels, colored green; 10 intermediate, yellow; and 10 red, complex; but when you start only 1 of each color is enabled). You cannot exceed a limit of movements per level,and you cannot go 2 times by the same place.
Click at the position where you want to go.