World four hundred and ninety-seven has only three boxes.
Step by step solution
Go LEFT, DOWN and push LEFT. Go DOWN, DOWN, LEFT, LEFT, UP, UP, push RIGHT, RIGHT and RIGHT. Go UP, RIGHT, RIGHT, DOWN and push LEFT.
Go DOWN and push LEFT. Push UP, go LEFT, LEFT, LEFT, DOWN, DOWN, RIGHT, RIGHT and push UP. Go DOWN, LEFT, LEFT, UP, UP, RIGHT and push RIGHT.
Go DOWN, RIGHT, RIGHT, UP, UP, UP, LEFT, LEFT and push DOWN. Push RIGHT. Push DOWN, go RIGHT, RIGHT, UP and push LEFT.
Go DOWN, LEFT and push LEFT. Go DOWN, DOWN, LEFT, LEFT, UP, UP, push RIGHT and RIGHT.
Congratulations. You have completed world four hundred and ninety-seven. Get ready for world four hundred and ninety-eight.