Mastermind PC Game

Mastermind is a game of logic.

There are six possible colors in the game.
Each time the game gets played,the computer hides
four of the six colors in a certain sequence
(without repeating any color.)

Using logic,and a review of your previous guesses,
you try to guess the computers color sequence.

Each row of the game is independently
scored. The number of (B) scores per row
is the number of colors in the right place.
The number of (W) scores per row is the
number of correct colors in the wrong place.

You win the game if you find the sequence
of colors that the computer has hidden.