World two hundred and fourty-two requires some boxes to be misplaced at the beginning.
Step by step solution
Go UP, UP, RIGHT, RIGHT, UP, UP, push LEFT and LEFT. Go RIGHT, RIGHT, UP, RIGHT, UP, UP, LEFT, push DOWN, DOWN, DOWN, go LEFT, LEFT, UP, UP and push RIGHT.
Go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, RIGHT, UP, UP, LEFT and push DOWN.
Go LEFT, LEFT, LEFT, DOWN, push DOWN, go LEFT, DOWN, DOWN, RIGHT, push UP, go LEFT, UP, push RIGHT, RIGHT and RIGHT. Go LEFT, LEFT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP, LEFT, UP and push LEFT. Go UP, push RIGHT, RIGHT, RIGHT, go UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, RIGHT and RIGHT.
Go LEFT, LEFT, UP, UP, UP, UP, UP, LEFT, UP, LEFT, LEFT, LEFT, DOWN, DOWN, LEFT and push LEFT. Go DOWN, DOWN, DOWN and push DOWN. Push RIGHT, RIGHT, go UP, RIGHT, RIGHT, RIGHT, DOWN, RIGHT, DOWN, DOWN, LEFT, LEFT, UP, LEFT, push UP, go LEFT, UP, push RIGHT, RIGHT, RIGHT, go DOWN, RIGHT, push UP, go LEFT, UP, push RIGHT and RIGHT.
Go LEFT, LEFT, DOWN, LEFT, LEFT, UP, UP, RIGHT and push UP. Push RIGHT, RIGHT, go UP, RIGHT, push DOWN and DOWN.
Go LEFT, UP, LEFT, UP, UP, LEFT and push DOWN. Go UP, LEFT, LEFT, DOWN, push RIGHT, RIGHT, go UP, RIGHT and push DOWN. Go RIGHT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT and push UP. Push RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, DOWN and DOWN. Go UP, UP, LEFT, LEFT, LEFT, DOWN, DOWN, RIGHT, DOWN, RIGHT and push RIGHT. Go DOWN, RIGHT, push UP, UP, go LEFT, UP and push RIGHT.
Go LEFT, UP, UP, UP, UP, LEFT, UP, UP, LEFT, LEFT, DOWN and push RIGHT. Go UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, DOWN and DOWN. Go UP, UP, LEFT, LEFT, LEFT, DOWN, DOWN, RIGHT, DOWN, RIGHT and push RIGHT. Go LEFT, LEFT, UP, LEFT, UP, LEFT, LEFT, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT and push RIGHT. Go LEFT, LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP and push UP. Go LEFT, UP, push RIGHT, RIGHT, go UP, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, UP, LEFT and push UP. Go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, DOWN, RIGHT, RIGHT, UP, UP, LEFT and push UP.
Go LEFT, LEFT, DOWN, LEFT, LEFT, DOWN, DOWN, DOWN, LEFT, LEFT and push UP. Go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP and push UP. Go LEFT, UP, push RIGHT, RIGHT, go UP, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, UP, LEFT and push UP. Go LEFT, UP, push RIGHT, RIGHT, RIGHT, go DOWN, RIGHT, push UP, UP, UP, go RIGHT, UP, push LEFT and LEFT. Go RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT and push UP. Go RIGHT, UP and push LEFT. Go DOWN, DOWN, LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, DOWN, DOWN, DOWN, push LEFT and LEFT. Go DOWN, LEFT, push UP, UP, UP, UP, go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, UP, UP, LEFT and push UP. Go LEFT, UP, push RIGHT, RIGHT, RIGHT, go DOWN, RIGHT, push UP, UP, UP, go RIGHT, UP, UP, LEFT, LEFT, DOWN, push RIGHT, go UP, RIGHT and push DOWN.
Go LEFT, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT and push DOWN. Go LEFT, UP, UP, UP, RIGHT, RIGHT, DOWN, RIGHT, DOWN, DOWN, DOWN, LEFT and push LEFT. Go DOWN, LEFT, push UP, UP, UP, UP, go LEFT, UP, push RIGHT, RIGHT, go UP, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, UP, LEFT and push UP. Go LEFT, UP, push RIGHT, RIGHT, RIGHT, go LEFT, LEFT, UP, UP, RIGHT, UP, RIGHT, RIGHT, DOWN, DOWN and push DOWN. Go LEFT, LEFT, LEFT, DOWN, DOWN, RIGHT, DOWN, RIGHT, RIGHT, UP, RIGHT, UP and push LEFT.
Go DOWN, DOWN, DOWN, RIGHT, push UP and UP.
Go LEFT, DOWN, LEFT, LEFT, UP, LEFT, UP, LEFT, LEFT, LEFT, DOWN, LEFT, LEFT, UP, UP and push RIGHT. Go LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, RIGHT, UP, RIGHT, UP, UP, RIGHT, UP, UP, UP, LEFT, LEFT, DOWN, DOWN, LEFT, LEFT, DOWN, DOWN, push DOWN and DOWN. Go UP, LEFT, LEFT, DOWN, DOWN, RIGHT, push RIGHT, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP and push UP. Go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, DOWN, DOWN, RIGHT, RIGHT, UP, UP, UP, LEFT, push UP, go LEFT, UP, push RIGHT, RIGHT, RIGHT, go LEFT, LEFT, DOWN, DOWN, RIGHT, DOWN, RIGHT, RIGHT, UP, UP, push UP, UP and UP. Go DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT, UP, RIGHT, UP, RIGHT, RIGHT, DOWN, push LEFT and LEFT. Go RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT and push UP. Go DOWN, LEFT, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, UP, LEFT and push DOWN. Go RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, UP, UP and push RIGHT. Go UP, RIGHT, push DOWN, DOWN, go UP, LEFT, LEFT, DOWN, DOWN, RIGHT, push RIGHT, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP and push UP. Go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, DOWN, DOWN, RIGHT, RIGHT, UP, UP, UP, LEFT and push UP. Go LEFT, UP, push RIGHT, RIGHT, RIGHT, go LEFT, LEFT, UP, UP, RIGHT, UP, RIGHT, RIGHT, DOWN, DOWN and push DOWN.
Go UP, UP, UP, LEFT, UP, UP, LEFT and push DOWN. Go UP, LEFT, LEFT, DOWN, push RIGHT, RIGHT, go UP, RIGHT and push DOWN. Go LEFT, LEFT, LEFT, DOWN, LEFT, LEFT, UP, LEFT, push DOWN, DOWN, DOWN, go RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, UP, UP and push RIGHT. Go UP, RIGHT, push DOWN, DOWN, go UP, LEFT, LEFT, DOWN, DOWN, RIGHT, push RIGHT, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP and push UP. Go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, DOWN, DOWN, RIGHT, RIGHT, UP, UP, UP, LEFT, push UP, go LEFT, UP, push RIGHT, RIGHT and RIGHT.
Go LEFT, LEFT, UP, UP, RIGHT and push UP. Push RIGHT, go UP, RIGHT, push DOWN and DOWN.
Go UP, LEFT, UP, UP, LEFT, LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT and push DOWN.
Go LEFT, LEFT, UP, LEFT, LEFT, DOWN, LEFT, LEFT, DOWN, DOWN, RIGHT and push UP. Go DOWN, LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, UP, UP, RIGHT, UP, UP, LEFT, LEFT, DOWN, push LEFT, go DOWN, LEFT, LEFT, UP, UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, DOWN, go UP, LEFT, LEFT, DOWN, DOWN, RIGHT and push RIGHT. Go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, push UP, go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, DOWN, RIGHT, DOWN, RIGHT, RIGHT, UP, UP, UP, LEFT, push UP, go LEFT, UP, push RIGHT and RIGHT.
Congratulations. You have completed world two hundred and fourty-two. Get ready for world two hundred and fourty-three.