World one hundred and four is with S-alike placed boxes.
Step by step solution
Go UP, UP, RIGHT, RIGHT, push DOWN, go RIGHT, DOWN, DOWN and push LEFT. Go RIGHT, UP, UP, LEFT, push DOWN, go UP, UP, LEFT, LEFT, DOWN, DOWN and push RIGHT. Push UP, go RIGHT, UP and push LEFT.
Go RIGHT, DOWN, RIGHT, DOWN and push LEFT. Go RIGHT, DOWN, DOWN, LEFT, push UP, go RIGHT, UP, UP, LEFT, LEFT, LEFT, DOWN, DOWN and push RIGHT. Push UP and UP.
Go RIGHT, RIGHT, DOWN, DOWN and push LEFT. Push UP, go LEFT, LEFT, DOWN, DOWN, LEFT, LEFT and push UP.
Go LEFT, UP, UP and push RIGHT.
Go LEFT, DOWN, DOWN, RIGHT, push UP, go DOWN, DOWN, RIGHT, RIGHT, UP, UP and push LEFT. Push DOWN, go LEFT, DOWN and push RIGHT.
Go LEFT, UP, LEFT, UP, push RIGHT, go LEFT, UP, UP, RIGHT, push DOWN, go LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, UP and push LEFT. Push DOWN, DOWN, go LEFT, LEFT, UP, UP and push RIGHT.
Push DOWN.
Congratulations. You have completed world one hundred and four. Get ready for world one hundred and five.