World five hundred and six has only one misplaced box and H-alike order of the boxes.
Step by step solution
Go RIGHT, RIGHT, UP, UP, UP, LEFT, LEFT, UP and push RIGHT. Go DOWN, RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, UP and push UP. Push RIGHT, go UP, RIGHT and push DOWN. Go LEFT, UP, UP, LEFT, LEFT, LEFT, DOWN, DOWN, DOWN and push RIGHT.
Go DOWN, RIGHT, RIGHT, push UP and UP. Go RIGHT, UP, RIGHT, UP, push LEFT, LEFT and LEFT. Push DOWN. Push RIGHT, go DOWN, DOWN, DOWN, LEFT, LEFT, UP, LEFT, UP, UP, push RIGHT and RIGHT. Go UP, RIGHT, push DOWN and DOWN.
Go UP, UP, RIGHT, RIGHT, DOWN and push LEFT. Go UP, LEFT, LEFT, DOWN, LEFT, LEFT, DOWN, DOWN, RIGHT and push UP. Go DOWN, DOWN, RIGHT, RIGHT, RIGHT, push UP and UP. Go LEFT and push LEFT.
Go UP, UP, RIGHT and push DOWN. Go UP, RIGHT, RIGHT, DOWN and push LEFT. Go DOWN, DOWN, DOWN, LEFT, LEFT and push UP. Go LEFT, LEFT, UP, UP, UP, push RIGHT and RIGHT.
Congratulations. You have completed world five hundred and six. Get ready for world five hundred and seven.