Move the light beam from the dark blue tile to the green target. Drag to move the light blue tiles around. The arrows tell you which direction the ball will move once it hits that tile. Press play to start moving.
Your goal is to move the light beam from the dark blue tile to the green target tile. Click and drag to move the light blue tiles around. The numbers in the boxes tell you how many squares the beam will move when it hits that tile, and the arrows say in which direction. When you think your path will work, press play to watch it move. (Still unclear? Check out the "How To Play" section.)