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