Introduction - If you have any usage issues, please Google them yourself
tic-tac-toe game
Playing Rules:
1) X always goes first.
2) The Players alternate placing Xs and Os on the board until either (a) one player has
four in a row horizontally, vertically or diagonally or (b) all 16 squares are filled.
3) If a player is able to draw four Xs or four Os in a row, that player wins.
4) If all 16 squares are filled and neither player has four in a row, the game is a draw.