It is adapted from an old code-breaking paper and pencil game for two players that may date back a century or more, but is still considered a challenging game. It is sure to keep you engaged for a long time.
It is usually played by two opponents, but here the game is played between the system and the player.
The game is played with 3 or 4 or5 or 6 digits depending on difficulties. The system has a 3 or 4 or 5 or 6-digit secret number. The digits will all be different. The player tries to guess the secret number, and the system gives the number of matches. If the matching digits are on the right positions, they are "bulls", if they are on different positions, they are "cows".
The game has simple rules, but it is difficult and entertaining.
Have fun figuring out the figures!