通常由两个人玩，一方出数字，一方猜。出数字的人要想好一个没有重复数字的4位数，不能让猜的人知道。猜的人就可以开始猜。每猜一个数字，出数者就要根据这个数字给出几A几B，其中A前面的数字表示数字正确位置也正确的数的个数，而B前的数字表示数字正确而位置不对的数的个数。-Usually by two people to play, one of the figures, a party to guess. Out of the number of people who want to be a good man without a repeat number of 4 digits, can not let people know. Guess the person can begin to guess. For each guess a number, the number of those who will be according to this figure gives a few a few B, which in front of a digital said the number of numbers in the correct position is the correct number, and B before the number said number the number correct and wrong position of the number.