五子棋是有两个人在一盘棋上进行对抗的竞技运动。在对局开始时，先由用户选择哪方先开局，先开局一方将一枚棋子落在一点上，然后由另一方在对方棋周围的交叉点上落子，如此轮流落子，直到某一方首先在棋盘的直线、横线或斜线上形成连续的五子则该方就算获胜。此时，算法结束。当有任何一方想退出时，都可在算法中实现。-Backgammon is a competitive sport confrontation of two people in a game of chess. At the beginning of

下棋的时候，只要输入如oo,那就会在oo的交叉处放置一个棋子，黑白方交替进行。-Chess, as long as the input, such as oo, it will be placed at the intersection of the oo a pawn, black and white side alternately.