①

You can move to this place by tapping the numbers on the top, bottom, left, and right of this place. When calculating, this location is set to 9.

②

You can change the game size. Resizing will shuffle the current sequence of numbers. Therefore, it is recommended to press this button when the current game is completed or given up.

③

Start the game. "Start" means that the timer is activated, the number board can be moved, and the button cannot be pressed. This button in the game changes to STOP. "Pause" is the opposite of "start". In addition, the game will be saved. Once the game is saved, you can close the app and resume the game next time.

④

"Finish" is to end the game. The start order, end order, and status are saved in the ranking. After that, the timer and score will be 0. You can start a new game. Please use after maximizing the score.

⑤

You can maximize the score and use it.