数独游戏 a)　　设计一个命令行界面的游戏，登入游戏界面后，应该有游戏规则说明，按键说明。

b)　　进入游戏前应该有难度选择：1表示简单、2表示中等、3表示困难。

c)　　在游戏主界面中有可以循环输入数独值、可以连续玩好几局直到退出、检查结果、查看答案、新开一局的功能。

d)　　信息提示功能：输入错误时应有提示、游戏失败或获取胜利时应有庆祝界面等。

-Sudoku a) the design of a command-line interface of the game, log into the game interface, there should be rules of the game descr iption, key instructions.

b) prior to entering the game should have difficulty options: 1 means simple, 2 for moderate, 3 for difficulty.

c) There can be recycled input Sudoku value, you can continuously play several bureau until you exit the game the main interface, test results, see the answer, features a newly opened office.

d) Information prompts: input error when prompted, the game fails or gets victory should have celebrated interface.