ticktacktoe

Tic-tac-toe is a game for two players who take turns marking spaces in a 3x3 grid. Players use either "X" or "O" and aim to get three of their marks in a row—horizontally, vertically, or diagonally—before their opponent does. It is considered a game of skill, where strategy, rather than chance, determines the outcome. While the basic game is simple, there are more complex variations that can be played on larger grids or with different rules for moving pieces. The game has been around since at least 1892.123