World ninety-eight is with only seven normal boxes, but hard to solve.
Step by step solution
Go LEFT, LEFT, DOWN, LEFT, DOWN and push RIGHT.
Go LEFT, DOWN, DOWN, push RIGHT, RIGHT, RIGHT, RIGHT, go DOWN, DOWN, LEFT, LEFT, push UP and UP.
Go LEFT, LEFT, UP, UP, RIGHT, UP, UP, RIGHT, RIGHT, UP, RIGHT, RIGHT, DOWN and push LEFT. Go DOWN, DOWN, push RIGHT, RIGHT, go DOWN, DOWN, push LEFT and LEFT. Go DOWN, DOWN, LEFT, LEFT, UP, UP, LEFT, LEFT, UP, UP, RIGHT, UP, UP, RIGHT and push RIGHT.
Go UP, RIGHT, push DOWN, go LEFT, LEFT, LEFT, DOWN, DOWN, LEFT, DOWN, DOWN, RIGHT, RIGHT, DOWN, DOWN, RIGHT, RIGHT, UP, UP and push LEFT.
Go RIGHT, RIGHT, RIGHT, UP, UP, LEFT, LEFT and push DOWN. Go UP, RIGHT, RIGHT, DOWN, DOWN, LEFT and push LEFT.
Go RIGHT, RIGHT, UP, RIGHT, RIGHT, UP, push LEFT, go UP, UP, push LEFT, LEFT, go UP, LEFT, LEFT, DOWN and push RIGHT. Push DOWN, DOWN and DOWN.
Go UP, RIGHT, push RIGHT, go DOWN, RIGHT, RIGHT, UP, push LEFT, LEFT, LEFT, go RIGHT, RIGHT, UP, UP, LEFT, push LEFT, go UP, LEFT, LEFT, DOWN, push RIGHT, go DOWN and push DOWN.
Go RIGHT, RIGHT, RIGHT, UP, UP, LEFT, push LEFT, go UP, LEFT, push DOWN and DOWN.
Congratulations. You have completed world ninety-eight. Get ready for world ninety-nine.