Introduction - If you have any usage issues, please Google them yourself
Rules of the game: first click on the button and let the system out of a 4 digit random number, not every repetition, then the user to guess, guess each time, the system will inform the result guess XAYB, A represents a number is correct, the location is correct B represents a number is correct, the position is not correct. For example, the system inform 1A2B, said you guessed three digits, including a position to guess the correct figures, two figures are not positioned correctly. Until the results of your guess is 4A0B, it means fully correct. See you eventually need to be able to guess that four times a random number. In general, there are six times less guess luck, 6 to 8 times guess is IQ. Come on!