World four hundred and eighteen is small, but not easy puzzle.
Step by step solution
Go DOWN, LEFT, LEFT, push UP, go LEFT, UP and push RIGHT. Go UP, UP, UP, RIGHT, UP, UP, LEFT, push DOWN, DOWN, DOWN, DOWN and DOWN. Go UP, UP, UP, UP, LEFT, LEFT, LEFT, DOWN, DOWN, push DOWN and DOWN.
Go UP, UP, RIGHT, push UP, go LEFT, UP, push RIGHT and RIGHT. Go LEFT, LEFT, DOWN, DOWN, LEFT, LEFT, UP and push RIGHT. Go DOWN, RIGHT, DOWN, DOWN, RIGHT, RIGHT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, UP push LEFT, LEFT and LEFT.
Go DOWN, DOWN, RIGHT and push UP. Go DOWN, RIGHT, RIGHT, UP, UP, LEFT and push LEFT. Go RIGHT, RIGHT, DOWN, push LEFT and LEFT.
Go UP, UP, UP, UP, RIGHT, UP, UP, LEFT, push DOWN, DOWN, DOWN, DOWN and DOWN. Go UP, UP, UP, UP, LEFT, LEFT, LEFT, push DOWN, DOWN and DOWN.
Congratulations. You have completed world four hundred and eighteen. Get ready for world four hundred and ninteen.