World three hundred and seventy-seven is with three parts, each of them having independent solution.
Step by step solution
Push UP, UP, UP, go LEFT, UP, push RIGHT and RIGHT.
Go LEFT, DOWN, DOWN, DOWN, DOWN, DOWN, push DOWN, go RIGHT, RIGHT, DOWN, DOWN, LEFT, LEFT, push UP, UP, UP, UP, UP, UP, go LEFT, UP, push RIGHT and RIGHT.
Go LEFT, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP, push RIGHT, go DOWN, RIGHT, push UP, UP, UP, UP, UP, UP, UP, go RIGHT, UP, push LEFT and LEFT.
Go RIGHT, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP, push RIGHT, go DOWN, RIGHT, push UP, UP, UP, UP, UP, go LEFT, UP, UP, RIGHT, RIGHT, DOWN, push LEFT and LEFT.
Go RIGHT, DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP, UP and push RIGHT. Go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, push UP, UP, UP, UP, go LEFT, UP and push RIGHT.
Go DOWN, DOWN, DOWN, DOWN, LEFT, push UP, UP and UP.
Go DOWN, DOWN, DOWN, RIGHT, DOWN, DOWN, RIGHT, RIGHT, DOWN, push LEFT, go DOWN, LEFT, push UP, UP, UP, UP, UP, UP and UP.
Go DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, UP, push LEFT, go DOWN, LEFT, push UP, UP, UP, UP, go LEFT, UP and push RIGHT.
Go DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, push UP, UP, UP and UP.
Go DOWN, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, UP, push LEFT, LEFT, go DOWN, LEFT and push UP.
Go RIGHT, RIGHT, RIGHT, DOWN, push LEFT, go DOWN, LEFT, push UP and UP.
Go DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, LEFT, UP, LEFT, LEFT, UP, UP, push UP, UP, UP and UP.
Go DOWN, DOWN, DOWN, LEFT, LEFT, push UP, UP and UP.
Go RIGHT, RIGHT, DOWN and push LEFT. Go RIGHT, DOWN, DOWN, LEFT, push UP, UP and UP.
Go DOWN, DOWN, LEFT and push UP.
Go DOWN, DOWN, RIGHT, RIGHT, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP and push RIGHT. Push UP, UP, UP, UP and UP.
Go DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT, push UP, UP, UP, UP, UP and UP.
Go DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, UP, UP, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, push RIGHT and RIGHT. Go UP, UP, UP, RIGHT, push UP, go DOWN, LEFT, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, UP, UP, UP, UP, UP, UP, UP, LEFT and push LEFT.
Go DOWN, DOWN, LEFT, DOWN, DOWN, DOWN, DOWN, push RIGHT, RIGHT, go LEFT, LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, UP, push UP, UP, UP, UP, UP and UP.
Go DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, push UP, go LEFT, UP, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, push UP, UP, UP and UP.
Go DOWN, DOWN, DOWN, LEFT, LEFT, LEFT, UP, UP, RIGHT, push DOWN, go LEFT, DOWN, push RIGHT, RIGHT, go LEFT, DOWN, DOWN, RIGHT, RIGHT, UP, push UP and UP.
Go DOWN, LEFT, LEFT, UP, UP, LEFT, UP, UP, RIGHT, push DOWN, DOWN, DOWN, go LEFT, DOWN, push RIGHT and RIGHT.
Congratulations. You have completed world three hundred and seventy-seven. Get ready for world three hundred and seventy-eight.