https://blog.gongquiz.com/2021/07/20/%ec%b2%b4%eb%a6%ac-%eb%a7%88%ec%8a%a4%ed%84%b0-1991-%ea%b2%8c%ec%9e%84-%ed%95%98%ea%b8%b0-7-cherry-master-7th-game-play-%d1%8c/