When you tap "Copy", the following screen will appear and you can post (copy) problems such as magazines, so you can enjoy collection of problems, without to carry around a pencil and an eraser.

Fill in the numbers while looking at the problem on the above screen.

When the question is established (there is only one correct answer), a message to select whether to save or start the game is displayed, so select whether to save or start the game.

If you select "Save", you can recall it from the "History" screen and play it later.