一个非常简单的火柴游戏，规则如下：

1.开始的时候有21根火柴

2.玩家和电脑轮流拿火柴

3.每一回合最多只能拿4根火柴

4.每一回合至少要挑一根火柴

5.谁拿到最后一根火柴谁就输了-A very simple match game, the rules are as follows: 1. The beginning there are 21 matches 2. Player and computer take turns to take three matches. Each round can only take a maximum of four matches 4. Each round pick at least one match 5. Who got the last one who will have lost the match