World five hundred and twenty-one is a puzzle with many cubicles for the boxes.
Step by step solution
Go LEFT, UP, push LEFT, LEFT, go DOWN, LEFT, LEFT, DOWN, DOWN, DOWN, LEFT, LEFT, UP, UP and push RIGHT. Go LEFT and push UP. Go DOWN, DOWN, DOWN, RIGHT, RIGHT, UP and push UP. Go DOWN, DOWN, RIGHT, RIGHT, DOWN, DOWN, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP and push RIGHT. Go UP, UP and push UP. Go DOWN and push RIGHT. Go LEFT, DOWN, DOWN, LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP and push UP. Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP and push UP.
Go UP, LEFT, LEFT, LEFT, DOWN, DOWN, RIGHT and push UP. Go DOWN, LEFT, LEFT and push UP. Go RIGHT, RIGHT, UP, RIGHT, RIGHT, DOWN, DOWN and push RIGHT. Go RIGHT, RIGHT, RIGHT, UP, UP, RIGHT, RIGHT, push RIGHT, go DOWN, RIGHT and push UP. Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, DOWN, DOWN and push RIGHT. Go RIGHT, DOWN, DOWN, RIGHT, DOWN, DOWN, RIGHT, push UP, UP and UP. Go DOWN, LEFT, LEFT, UP, UP, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, DOWN and push DOWN. Go LEFT, push LEFT, LEFT, LEFT and LEFT.
Go RIGHT, UP, UP, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, DOWN, DOWN and push RIGHT. Go RIGHT, UP, RIGHT and push DOWN. Go UP, RIGHT, UP, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, LEFT, LEFT, UP and push UP. Go UP, RIGHT, UP and push LEFT. Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, DOWN, DOWN, LEFT, LEFT, UP and push UP. Go RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, LEFT, push LEFT and LEFT. Go RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, RIGHT, RIGHT, DOWN, DOWN and push LEFT. Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP, LEFT and push DOWN.
Go DOWN, DOWN, DOWN, LEFT, DOWN, push RIGHT, go UP, RIGHT and push DOWN. Go UP, LEFT, UP, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT and push UP. Go DOWN, LEFT, LEFT, LEFT, LEFT, UP, UP, RIGHT and push RIGHT. Go LEFT, LEFT, DOWN, DOWN, RIGHT, RIGHT, push UP, UP and UP. Go DOWN, DOWN, push LEFT, LEFT, go DOWN, LEFT and push UP. Go RIGHT, RIGHT, RIGHT, DOWN, RIGHT, RIGHT, UP and push UP. Push LEFT, go LEFT, UP and push UP. Go RIGHT, RIGHT, UP, UP, LEFT, LEFT and push DOWN. Go UP, RIGHT, RIGHT, DOWN, DOWN, LEFT, push LEFT and LEFT. Go RIGHT, DOWN, DOWN, LEFT, DOWN, LEFT and push UP. Go RIGHT, RIGHT, UP, UP, LEFT, push LEFT, LEFT, LEFT, LEFT, LEFT, go UP, LEFT, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT and LEFT.
Go RIGHT, UP, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, RIGHT, RIGHT, DOWN, push LEFT, LEFT and LEFT. Go RIGHT, RIGHT, RIGHT, DOWN, RIGHT, RIGHT, UP, push LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, UP, UP, UP, go RIGHT, RIGHT and push DOWN. Go UP, LEFT, LEFT, DOWN, DOWN, RIGHT, DOWN, RIGHT, RIGHT, UP, push LEFT, go DOWN, LEFT, LEFT, UP, UP, UP, LEFT, LEFT, LEFT, LEFT, DOWN, DOWN, push RIGHT, RIGHT and RIGHT. Go DOWN, RIGHT, push UP, UP, go DOWN, DOWN, RIGHT, RIGHT, UP, UP, UP, LEFT, push LEFT, LEFT and LEFT. Push DOWN, go UP, push LEFT, LEFT, LEFT, LEFT, go UP, LEFT, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, go DOWN, LEFT and push UP. Go RIGHT, UP, UP, UP, RIGHT, RIGHT, RIGHT, DOWN, DOWN, RIGHT and push RIGHT. Go RIGHT, DOWN, RIGHT, push UP, go DOWN, RIGHT, RIGHT, UP, UP, UP, LEFT and push LEFT. Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP, LEFT and push DOWN.
Go DOWN, DOWN, DOWN, RIGHT, DOWN and push LEFT. Go UP, UP, UP, UP, UP, LEFT, UP, LEFT, LEFT, DOWN, DOWN, RIGHT, push RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, go RIGHT, DOWN and push LEFT.
Go UP, UP, UP, RIGHT, RIGHT, RIGHT, DOWN, DOWN, RIGHT, DOWN, DOWN, RIGHT, push UP, UP, UP, go DOWN, RIGHT, RIGHT, UP, UP, LEFT, push LEFT, LEFT, LEFT, LEFT, LEFT, go UP, LEFT, push DOWN, DOWN, DOWN and DOWN.
Go UP, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, RIGHT, RIGHT and push DOWN. Go UP, RIGHT, RIGHT, DOWN, DOWN, LEFT, push LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, go UP, LEFT, push DOWN, DOWN and DOWN.
Go UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, push LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, UP, go DOWN, RIGHT, RIGHT, UP, UP, LEFT, push LEFT, LEFT, LEFT, LEFT, LEFT, go UP, LEFT, push DOWN and DOWN.
Congratulations. You have completed world five hundred and twenty-one. Get ready for world five hundred and twenty-two.