Use the arrow keys to move and try to get to the blue ledge. It starts on the easiest level (2) Press the keys 2, 3, and 4 to change the level. In my opinion, the easiest to hardest levels are 2, 4, 3. You can press the 1 key to show a level that is impossible, but if you can find a solution, I will give you a follow for it. Levels 2-4 are possible.