Bulls And Cows

Guess a secret number. The player has two levels to choose from, a 3-digit and a 4-digit level and for each level a corresponding secret number is generated which contains all unique digits. The count of Bulls and Cows is shown for each guess the player makes. Bulls represent the number of right digits at right place and cows represent the number of right digits at the wrong place.

If the secret number = 7462 and the guessed number = 7629, then Bulls = 1 (7 at right place) and Cows = 2 (6 and 2 at wrong place). The player makes the next guess using the number of Bulls and Cows as cues and tries to unlock the secret number within seven chances. It's a fun way to churn your brain so go ahead and unlock as many secret numbers as you can.