World two hundred and thirty-three is with special placement of the boxes at the center.
Step by step solution
Go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, push LEFT, LEFT, LEFT and LEFT.
Go DOWN, DOWN, DOWN, push LEFT and LEFT. Push UP, go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, push UP, UP, go RIGHT, UP and push LEFT.
Go DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP, LEFT, LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, UP, RIGHT and push UP. Go DOWN, LEFT, DOWN, LEFT, LEFT, UP, UP, RIGHT and push UP. Go LEFT, UP, push RIGHT, go UP, RIGHT, RIGHT, RIGHT, DOWN, DOWN, push LEFT and LEFT. Push UP, go LEFT, LEFT, DOWN, DOWN, RIGHT and push UP. Go LEFT, UP, push RIGHT, go DOWN, RIGHT, RIGHT, RIGHT, UP, UP, UP, UP, UP, LEFT, LEFT, LEFT, DOWN, push DOWN and DOWN. Push RIGHT, RIGHT, go LEFT, LEFT, push DOWN, go LEFT, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, UP, RIGHT, UP, UP, LEFT and push UP. Go LEFT, UP and push RIGHT. Go LEFT, DOWN, LEFT, DOWN, DOWN, RIGHT, push UP, go LEFT, UP, push RIGHT. Go DOWN, RIGHT, RIGHT, RIGHT, UP and push UP.
Go DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT and push RIGHT.
Go LEFT, LEFT, DOWN, DOWN, RIGHT, push UP, go LEFT, UP and push RIGHT.
Go LEFT, UP, UP, UP, RIGHT, RIGHT, RIGHT, DOWN, RIGHT, RIGHT, RIGHT, UP, RIGHT, RIGHT, DOWN, RIGHT, DOWN, push LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, go RIGHT, UP, push LEFT and LEFT.
Go RIGHT, DOWN, DOWN, RIGHT, RIGHT, DOWN, RIGHT, RIGHT and push UP. Go RIGHT, UP, push LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, go RIGHT, UP and push LEFT.
Go RIGHT, UP, RIGHT, UP, UP, RIGHT, push DOWN, DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT and LEFT.
Go RIGHT, UP, UP, RIGHT, UP, UP, UP, LEFT, LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN, DOWN, go RIGHT, DOWN, DOWN, DOWN, LEFT, LEFT, UP, UP and push RIGHT. Go UP, RIGHT, push DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT, go DOWN, LEFT and push UP.
Go DOWN, RIGHT, RIGHT, DOWN, RIGHT, DOWN, RIGHT, DOWN, DOWN, LEFT, push UP, UP, go RIGHT, UP, UP, UP, LEFT, LEFT, DOWN, DOWN and push RIGHT. Go DOWN, RIGHT, push UP, UP, go RIGHT, UP, push LEFT, LEFT, LEFT and LEFT.
Go RIGHT, DOWN, DOWN, RIGHT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP and push RIGHT. Go DOWN, RIGHT, push UP, UP, UP, go RIGHT, UP, UP, UP, LEFT, LEFT, DOWN, DOWN, push RIGHT, go DOWN, RIGHT, push UP, UP, go RIGHT, UP, push LEFT, LEFT, LEFT, go RIGHT, UP, UP, LEFT, LEFT, DOWN, push DOWN, go RIGHT, DOWN and push LEFT.
Congratulations. You have completed world two hundred and thirty-three. Get ready for world two hundred and thirty-four.