Bulls and Cows

Popular old school brain teaser game Bulls and Cows (aka Pigs and Cows): guess the 4-digit number following clues of your previous tries. Train your attentiveness and logical thinking! Hone your skills alone or compete in speed with friends on the same device!

The rules are simple:
You try to guess a number and on each turn you get the two numbers representing the number of matches - one for matching digits in their right positions (they are "bulls") and the other one for matches in different positions (they are "cows").

There are two playing modes available: Single Player and Versus.
In Single Player mode you guess a random number generated by the computer. In Versus mode you can play with friends using the same device passing it to another player to make his turns.