21点纸牌游戏

Welcome to 21 Solitaire, a fun and relaxing card puzzle game. Your task is to make the sum of all the card values fall between 0 to 21 and try to maximize or minimize the card value. You can intuitively see the role of the special function card, and the Hold position on the right is like an idle position. You can play longer if you make good use of it. This game is easy to play, but it provides a good brain exercise to hone math skills and logical thinking. If you play a little every day, you will become more efficient.