https://blog.csdn.net/JkSparkle/article/details/822873
https://wenku.baidu.com/view/d3ca953c162ded630b1c59eef8c75fbfc77d94b5.html
https://www.zhihu.com/question/37306169
minma中使用记忆化加速
https://www.bilibili.com/video/av31191881?from=search&seid=6520479384074766286
https://blog.csdn.net/lihongxun945/article/details/50730231
https://github.com/lihongxun945/gobang
如何设计一个还可以的五子棋AI
局面判断
https://blog.csdn.net/marble_xu/article/details/90450436
c版本
https://blog.csdn.net/lihongxun945/article/details/6011231#comments
简单开局