Introduction - If you have any usage issues, please Google them yourself
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.