Not many tricks can be done over the phone. This is one!
You and your friend alternate turns, each selecting a number from 1-9. The object of the game is to be the first to have 3 of your numbers total 15. You have a secret strategy that lets you win much of the time. Your secret strategy: You have the below diagram to guide you. The diagram is called a magic square. Notice that each row, column, and diagonal totals 15. Unknown to the player on the other side of the phone, you are playing tic tac toe! Circle your selections and put a square around your friend’s. If you can be the first to tic tac toe, you will win.