一字棋游戏，包括两个选手。用户可以在一个3*3的棋盘上任意的选择空闲的位置拜访棋子，最早在水平方向上，或者垂直方向上或者对角线方向上形成三子一线者获胜。(One word chess game, including two players. Users can choose a free position to visit a piece of chess on a 3*3 chessboard, and the winner is first formed in the horizontal