Guess the correct two-digit number:  Click on the green flag to start the game. Your first guess is totally up to you and can be any two different digits (but not zero). After you enter it, you will be given D and P for those two digits. D is the number of correct digits and P is the number of digits in the correct place. Using the information in D and P, make another guess and enter it. The new values for D and P help you make a better guess. Repeat this process until you guess the correct number.