World four hundred and seventy-six is with only one misplaced box.
Step by step solution
Push DOWN, go LEFT, DOWN, DOWN, RIGHT, push RIGHT and RIGHT. Go LEFT, LEFT, LEFT, UP, UP, RIGHT and push DOWN. Push RIGHT, go LEFT, UP, UP, RIGHT and push DOWN. Go RIGHT and push DOWN. Push LEFT, go UP, LEFT, LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, push UP and UP.
Go DOWN, RIGHT, RIGHT, RIGHT, UP, UP, UP, push LEFT and LEFT. Go DOWN, push DOWN, go LEFT, DOWN and push RIGHT. Go UP, UP, UP, RIGHT, RIGHT, DOWN, DOWN and push LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN and push DOWN.
Go LEFT, DOWN, DOWN, LEFT, LEFT, UP, UP, UP, UP, RIGHT, push RIGHT and RIGHT. Go DOWN, DOWN, LEFT and push UP. Go DOWN, DOWN, DOWN, LEFT, LEFT, UP, UP and push RIGHT. Go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP and push UP.
Go RIGHT, UP, UP and push LEFT. Push DOWN and DOWN. Go LEFT, LEFT, UP, UP and push RIGHT.
Go LEFT, DOWN and push RIGHT.
Go DOWN, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, LEFT, push UP, go RIGHT, UP, push LEFT and LEFT.
Congratulations. You have completed world four hundred and seventy-six. Get ready for world four hundred and seventy-seven.