World five hundred and seven has two placed and two misplaced boxes.
Step by step solution
Go UP, RIGHT, RIGHT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, LEFT, UP, UP, UP, UP and push RIGHT. Push UP, go DOWN, LEFT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP, UP, UP, UP, UP, UP, RIGHT, RIGHT and push RIGHT. Go DOWN, DOWN and push RIGHT. Go DOWN, DOWN and push LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN and push RIGHT.
Go UP, UP, UP, LEFT, LEFT, LEFT, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, UP, UP, push LEFT and LEFT. Go RIGHT, RIGHT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP, UP, UP, UP, UP, RIGHT, RIGHT, RIGHT, DOWN and push DOWN.
Go LEFT, DOWN, push DOWN and DOWN. Go UP, UP, UP, RIGHT, UP, UP, LEFT, LEFT, LEFT, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT and push RIGHT. Go UP, UP, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, LEFT, push LEFT and LEFT. Go DOWN, DOWN, LEFT, DOWN, DOWN, RIGHT, RIGHT and push UP.
Go DOWN, LEFT, LEFT, UP, UP, RIGHT, UP, UP, RIGHT, RIGHT, RIGHT, DOWN, DOWN, LEFT and push LEFT.
Go DOWN, DOWN, LEFT, LEFT, DOWN, DOWN, LEFT, LEFT, UP, UP, UP, UP, UP, UP, RIGHT and push RIGHT.
Congratulations. You have completed world five hundred and seven. Get ready for world five hundred and eight.