The objective is to get all the rectangles to another tower, you can only drag it if it's the top rectangle in it's tower and you can only place it on another tower if the rectangle in that tower is bigger than the rectangle you are dragging Just click and drag Minimum moves: 1 rectangle: 1 2 rectangles: 3 3 rectangles: 7 4 rectangles: 15 5 rectangles: 31 6 rectangles: 63 Good Luck :)