Word Cracker description

Aim of the Game :
The main aim of the game is to guess the word that the game generated randomly. The game will show number of cows and bulls(meaning of cows and bulls explained below) on each word you enter. You have to get 4 bulls in order to win.

Rules of The Game:
1) You have 15 chances to guess the word.
2) You have to enter a 4 alphabet word.
3) The word that you enter should be a valid English dictionary word.
4) Word should not have repeating alphabets in it.

Meaning of Cows and Bulls

BULL
If a letter in your word matched with a letter in the word to be guessed, including it's position, then you get a bull.

COW
If a letter in your word matched with a letter in the word to be guessed, but it's position is wrong, then you get a cow.