World four hundred and seventy-eight have top and bottom parts connected by a narrow passage.
Step by step solution
Go UP, LEFT, UP, UP, RIGHT, RIGHT, RIGHT, DOWN, DOWN, push LEFT and LEFT. Push UP, go DOWN, RIGHT, RIGHT, UP, UP, LEFT and push DOWN. Go LEFT, LEFT, UP and push RIGHT. Go DOWN, DOWN, DOWN, DOWN, RIGHT, DOWN, DOWN, LEFT, push UP and UP. Go DOWN, DOWN, LEFT, LEFT, UP, UP and push RIGHT.
Push DOWN, go RIGHT, RIGHT, UP and push LEFT. Push UP, UP, UP, go RIGHT, RIGHT, DOWN and push LEFT. Go RIGHT, UP, UP, UP, LEFT, push DOWN and DOWN. Go LEFT, LEFT, UP and push RIGHT. Go DOWN, push DOWN, DOWN, DOWN and DOWN. Go LEFT, LEFT, UP, push RIGHT, go DOWN, RIGHT and push UP.
Go LEFT, LEFT, DOWN, DOWN, DOWN, RIGHT, push UP, go LEFT, UP and push RIGHT. Go UP, RIGHT, RIGHT, DOWN, DOWN and push LEFT. Go RIGHT, UP, RIGHT, RIGHT, DOWN, push LEFT and LEFT. Go UP, UP, LEFT, LEFT, DOWN and push RIGHT. Go LEFT, LEFT, DOWN, DOWN, RIGHT, push UP, go LEFT, UP and push RIGHT.
Go UP, RIGHT, push UP, UP and UP. Go RIGHT, RIGHT, DOWN and push LEFT. Go RIGHT, UP, UP, UP, LEFT, push DOWN and DOWN. Go LEFT, push DOWN and DOWN.
Go UP, UP, LEFT, UP and push RIGHT. Go LEFT, DOWN, LEFT, LEFT, UP, push RIGHT and RIGHT. Go DOWN, RIGHT, RIGHT, RIGHT, DOWN and push LEFT.
Go UP, RIGHT, UP, UP, LEFT, push DOWN, go RIGHT, DOWN and push LEFT.
Congratulations. You have completed world four hundred and seventy-eight. Get ready for world four hundred and seventy-nine.