World one hundred and twenty-six is with four small rooms, connected by corridors.
Step by step solution
Go DOWN, RIGHT, RIGHT, DOWN and push LEFT. Go DOWN, DOWN, DOWN, DOWN, DOWN, LEFT, LEFT, UP and push RIGHT. Go DOWN, LEFT, DOWN, DOWN, RIGHT, push UP and UP. Go RIGHT, RIGHT, DOWN and push LEFT, go UP, push UP and UP. Go RIGHT, push DOWN, go RIGHT, push RIGHT, RIGHT, RIGHT, RIGHT, go UP, RIGHT, push DOWN and DOWN.
Go UP, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, DOWN, DOWN, RIGHT, push UP, go LEFT, UP, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, go UP, RIGHT and push DOWN.
Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, DOWN, LEFT, LEFT, UP, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, go UP, RIGHT, RIGHT, DOWN, push LEFT, go UP, LEFT, push DOWN and DOWN.
Go UP, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, DOWN, DOWN, DOWN, RIGHT, push UP, UP, go LEFT, UP, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, go UP, RIGHT, RIGHT, DOWN, push LEFT, go UP, LEFT and push DOWN.
Go RIGHT, UP, push UP, UP, go RIGHT, RIGHT, UP, UP, LEFT, UP, LEFT, LEFT, DOWN and push RIGHT. Push DOWN, DOWN, DOWN, DOWN, go LEFT, DOWN, push RIGHT, go UP, RIGHT, push DOWN and DOWN.
Go UP, LEFT, UP, UP, UP, UP, LEFT, LEFT, LEFT, UP, LEFT and push LEFT. Go DOWN, LEFT, LEFT, DOWN, push DOWN, DOWN, go RIGHT, DOWN, DOWN, LEFT, LEFT, UP, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, go UP, RIGHT and push DOWN.
Go LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP and push RIGHT. Go DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, UP, RIGHT, RIGHT, UP, UP and push LEFT. Go UP, LEFT, push DOWN, DOWN, DOWN and DOWN.
Go UP, UP, LEFT, LEFT, LEFT, UP, LEFT, LEFT, DOWN, LEFT, LEFT, DOWN, DOWN and push DOWN. Go LEFT, DOWN, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, go LEFT, UP and push RIGHT.
Go LEFT, DOWN, LEFT, LEFT, LEFT, LEFT, LEFT, LEFT, UP, UP, UP, UP, UP, LEFT, LEFT, DOWN and push RIGHT. Go UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, go LEFT, DOWN, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT and RIGHT.
Go UP, RIGHT, UP, UP, RIGHT, RIGHT, UP and push LEFT. Go UP, LEFT, push DOWN, DOWN and DOWN.
Go UP, UP, LEFT, LEFT, LEFT, UP, LEFT, LEFT, UP, LEFT and push DOWN. Go RIGHT, DOWN, push LEFT, go UP, LEFT, push DOWN, DOWN, DOWN, DOWN, go LEFT, DOWN, push RIGHT, RIGHT, RIGHT, RIGHT, RIGHT and RIGHT.
Congratulations. You have completed world one hundred and twenty-six. Get ready for world one hundred and twenty-seven.