此游戏中有3种难度不同的级别。原理是根据极大极小的搜索策略，实现对奕功能。同时，在游戏中我们插入了不同的声效，在不同的情况会有不同的声音。鼠标点错位子也会发出警告声音。同时，我们设计的五子棋还有悔棋的功能。-This game has 3 different levels of difficulty. Principle is based on minimax search strategy to achieve Chess function. Meanwhile, in the game we insert a different sound, in different situations have different voices. Click of the mouse sub-dislocation of warning will sound. Meanwhile, we design the function of backgammon also undo.