World five hundred and one is small, relatively fast to complete puzzle.
Step by step solution
Go UP, UP, push LEFT and LEFT. Go RIGHT, RIGHT, UP, UP, LEFT and push DOWN. Go RIGHT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT and push UP. Go LEFT, UP, UP, UP, RIGHT, push RIGHT, RIGHT, go UP, RIGHT, push DOWN, DOWN and DOWN.
Go UP, UP, LEFT, LEFT, DOWN and push RIGHT. Go LEFT, UP, LEFT, LEFT, DOWN, DOWN, DOWN, RIGHT, DOWN, RIGHT, RIGHT, push UP, UP and UP. Go LEFT, UP, LEFT, LEFT, DOWN and push RIGHT. Push DOWN, go UP, UP, RIGHT and push RIGHT.
Go DOWN, push LEFT, go UP, LEFT and push DOWN. Go RIGHT, RIGHT, DOWN, RIGHT, RIGHT, UP, push LEFT and LEFT. Go UP, UP, RIGHT, push DOWN, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, push LEFT, go DOWN, LEFT and push UP.
Push LEFT, go UP, LEFT, LEFT, DOWN, push RIGHT, RIGHT, RIGHT, go DOWN, RIGHT, RIGHT, UP and push LEFT. Go UP, push LEFT and LEFT.
Go RIGHT, RIGHT, DOWN, DOWN, LEFT and push UP.
Go DOWN, DOWN, DOWN, RIGHT and push UP.
Congratulations. You have completed world five hundred and one. Get ready for world five hundred and two.