兩個玩家用四個O或X填充一行,一列或一個對角線
A simple game using a 7x7 grid for two players (player vs player or player vs A.I.), X and O, who take turns by placing a single 'X' or 'O' into an empty box. The first player to get 4 X's or O's lined up horizontally, vertically, or diagonally, wins the game