World seventy-three is average sized stage. There are some small obstacles, making it a harder puzzle.
Step by step solution
Go RIGHT, DOWN, RIGHT, RIGHT, push UP, UP and UP. Push RIGHT and RIGHT. Push UP, UP, go LEFT and push LEFT. Push DOWN, DOWN, DOWN, DOWN, go RIGHT and push DOWN. Push LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, go RIGHT, UP, and push LEFT.
Go RIGHT, DOWN, RIGHT, RIGHT, UP, UP, UP, UP, UP and push LEFT. Push DOWN, go UP, UP, LEFT, LEFT, DOWN, DOWN, push RIGHT, RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT, go UP, LEFT, push DOWN, go RIGHT, DOWN, push LEFT, LEFT, go DOWN, LEFT, push UP and UP.
Go DOWN, RIGHT, RIGHT, RIGHT, UP, RIGHT, RIGHT, UP, UP, UP, UP, LEFT, LEFT, DOWN and push RIGHT. Go UP, RIGHT, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT and LEFT. Go UP, LEFT, push DOWN, go RIGHT, DOWN, push LEFT, LEFT, go DOWN, LEFT and push UP.
Go RIGHT, RIGHT, RIGHT, UP, RIGHT, RIGHT, UP, UP, UP, UP, LEFT, LEFT, LEFT, UP, UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT and LEFT. Go UP, LEFT, push DOWN, DOWN, go RIGHT, DOWN, push LEFT and LEFT.
Go RIGHT, UP, UP, RIGHT, RIGHT, RIGHT, UP, UP, UP, UP, UP, LEFT, UP, UP, RIGHT, RIGHT, RIGHT, push DOWN, go RIGHT, DOWN, push LEFT, LEFT and LEFT. Go DOWN, LEFT, LEFT, UP, UP, RIGHT, push DOWN, DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT and LEFT. Go UP, LEFT, push DOWN, go RIGHT, DOWN, push LEFT and LEFT.
Go RIGHT, RIGHT, UP, RIGHT, RIGHT, UP, UP, UP, UP, UP, RIGHT, RIGHT, UP, UP, LEFT and push DOWN. Go RIGHT, DOWN, push LEFT, LEFT, go DOWN, LEFT, LEFT, UP, UP, RIGHT, push DOWN, DOWN, go LEFT, DOWN and push RIGHT. Go UP, RIGHT, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT and LEFT. Go UP, LEFT, push DOWN, DOWN, go RIGHT, DOWN and push LEFT.
Go UP, UP, RIGHT, RIGHT, RIGHT, UP, UP, UP, RIGHT, RIGHT, UP, RIGHT, RIGHT, DOWN, push LEFT, LEFT, LEFT, go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT, go UP, LEFT, push DOWN, go RIGHT, DOWN and push LEFT.
Go UP, RIGHT, RIGHT, RIGHT, RIGHT, UP, RIGHT and push UP. Go DOWN, LEFT, LEFT, UP, UP, UP, UP, RIGHT, RIGHT, DOWN, RIGHT, DOWN, push LEFT, LEFT, go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT, go UP, LEFT, push DOWN and DOWN.
Go RIGHT, DOWN, RIGHT, RIGHT, RIGHT, push UP, UP, go LEFT, LEFT, push DOWN, go LEFT, DOWN and push RIGHT. Go UP, UP, RIGHT, UP, UP, UP, RIGHT, RIGHT, DOWN, DOWN and push LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, go RIGHT, DOWN, push LEFT, LEFT, go DOWN, LEFT, LEFT, UP, UP, RIGHT and push DOWN.
Go RIGHT, RIGHT, RIGHT, DOWN, DOWN, push LEFT and LEFT.
Go UP, UP, RIGHT, RIGHT, UP, RIGHT, UP, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, push LEFT, LEFT, LEFT, LEFT and LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT, go UP, LEFT and push DOWN.
Go RIGHT, RIGHT, RIGHT, UP, UP, UP, RIGHT, RIGHT, RIGHT, UP, UP, UP, RIGHT, push DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT and LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT and LEFT.
Go RIGHT, RIGHT, RIGHT, UP, RIGHT, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, push LEFT, LEFT, LEFT, go UP, LEFT, push DOWN and DOWN. Go RIGHT, DOWN, push LEFT and LEFT. Go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT and LEFT.
Congratulations. You have completed world seventy-three. Get ready for world seventy-four.