Choose the type of problem you will be required to solve
Higher difficulty puzzles have more digits; the more possible arrangements there are, the harder the puzzle is.
Game background image
Choose from a variety of background pictures and designs for your games. You can also change this option while you are playing by clicking on the gear icon in the lower right corner.
Begin the game
Depending on whether you choose addition or multiplication, you will see either an addition problem or a multiplication problem on the screen. However, the digits have been scrambled. To rearrange the digits, click on one digit, then click where you want it to go. The two digits will change positions. Continue moving tiles until you solve the problem.
Note: Many problems will have more than one solution, so there is no hint mode in this game, since the site has no way of knowing which solution you're working toward.