World four hundred and thirty-eight is easy puzzle with boxes for placement on the lower-right corner.
Step by step solution
Go RIGHT, DOWN and push RIGHT. Go DOWN, push RIGHT, RIGHT, RIGHT, RIGHT and RIGHT. Go LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, push DOWN, DOWN, DOWN, DOWN, DOWN, go LEFT, DOWN and push RIGHT.
Go LEFT, UP, UP, LEFT, UP, UP, UP, UP and push RIGHT. Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, push DOWN, DOWN, DOWN, DOWN, DOWN and DOWN.
Go UP, UP and push LEFT.
Go RIGHT, UP, UP, UP, LEFT, LEFT, LEFT, LEFT, DOWN, DOWN, DOWN, DOWN, push RIGHT and RIGHT. Go LEFT, LEFT, UP, UP, UP, UP, RIGHT, RIGHT, DOWN, DOWN and push DOWN. Go RIGHT, push DOWN and DOWN.
Go UP, UP, LEFT, UP, UP, UP, LEFT, LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, push RIGHT, go UP, RIGHT and push DOWN. Go UP, LEFT, UP, UP, UP, LEFT, LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, go UP, UP, LEFT, LEFT, DOWN, DOWN, DOWN, RIGHT, push RIGHT, RIGHT, go UP, RIGHT and push DOWN.
Go UP, UP, UP, UP, UP, UP, RIGHT, RIGHT, DOWN, DOWN and push LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, DOWN, DOWN and DOWN.
Go LEFT, LEFT, UP, UP, UP, LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT and RIGHT. Go LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, push DOWN, DOWN and DOWN.
Go UP, UP, RIGHT and push DOWN.
Go UP, RIGHT, UP, push LEFT, go UP, LEFT, push DOWN, DOWN and DOWN.
Go UP, UP, UP, LEFT, LEFT, LEFT, push DOWN, DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, go UP, UP, LEFT, LEFT, DOWN, DOWN, DOWN, RIGHT and push RIGHT.
Go UP, UP, UP, LEFT, UP, UP, UP, LEFT, push DOWN, go UP, LEFT, LEFT, DOWN, DOWN, RIGHT, push RIGHT, go UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN, DOWN and DOWN.
Go UP, UP, UP, LEFT, LEFT, LEFT, LEFT, LEFT, UP, LEFT, LEFT, DOWN, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, go UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN and DOWN.
Go UP, LEFT, LEFT, DOWN, DOWN, LEFT, LEFT, LEFT, LEFT, UP and push UP. Go DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, UP, LEFT, LEFT, LEFT, UP, LEFT, LEFT, DOWN, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, go UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT and push DOWN.
Congratulations. You have completed world four hundred and thirty-eight. Get ready for world four hundred and thirty-nine.