软件类别：游戏娱乐,
软件授权：免费软件,
运行环境：ios,
软件语言：英语
Free for a limited time: Step through over 100,000 chess opening positions, annotated by name and variation! Each position shows win percentage statistics and most popular variations. Position statistics collected from over 3,000,000 recent, high-level games.
下载地址：iTunes 或者AAP STORE 下载
