TIC TAC TOE TIPS & TRICKS Control the corners If things are still too easy, take it up a notch by switching to hard mode! You can play against a computer, or with a friend on the same computer. Try your skills getting four in a row on the 5x5 grid for an extra challenge. Your goal is to get three in a row before your opponent does. On your turn, click anywhere on the grid to place an X in that square.
