猜数字小游戏。游戏规则：随机产生4个数字，由玩家输入4个不重复的数字（如：8 3 1 2）按回车后电脑给出提示，其形式为"?A?B".你所输入的四位数中，位置和数字都正确则为A，数字相同但位置不相同时为B，你只可以猜10次，若你所用的次数小于纪录保持者，则为破纪录。-small game viewing. The rules of the game : randomly generated four figures from the importation of four players not to repeat the figures (eg : 8 3 1 2) by the transport after the computer is suggested, in the form of "A B." You have entered the four-digit, location and the correct figures for A, figures but with the location is not same as B, you can only guess 10 times, if you use less than the number of records, compared with the record.