Tic-Tac-Toe

This is a classical tic tac toe game. That I think a majority of people have played once in their whole lives. I hope you will like the game. If in case you don't know how to play it then here is how to play:-

• The game is played on a grid that's 3 squares by 3 squares.
• You are X, your friend is O. 
• The first player to get 3 of her marks in a row (up, down, across, or diagonally) is the winner.
• When all 9 squares are full, the game is over.