Tic-tac-toe, also referred to as noughts and crosses or Xs and Os, is a paper-and-pencil sport for 2 gamers, X and O, who take turns marking the areas in a 33 grid.
The primary participant to get three of her marks in a row (horizontally, vertically, or diagonally) wins the sport. Tic-tac-toe is an easy sport, however it may be surprisingly tough to win. The truth is, if each gamers play optimally, the sport will all the time finish in a draw.