MSTMND (Mastermind Game)
                  by
       Larry Knock [72106,1051]

       GAME = 2.6K,  DOC = 3.5K

     MSTMND is the M100 version of the popular colorcode breaker game.
     In the basic game, the computer
picks a code consisting of 4 colors out
of a possible 6. The 6 valid colors are
BLUE, GREEN, ORANGE, RED, WHITE, and
YELLOW. Your task is to break the code
by making successive guesses as to
what you think the code is. Guesses are
made by entering the first letters of
the colors you think are in the code.
The computer provides feedback on each
guess which guides you in making
succeeding guesses. This feedback takes
the following form:

     An 'X' means that your guess
            contained a color that was
            both the correct color, and
            was in the correct position
            in the code.

     An 'O' means you had a correct
            color, but not in the
            proper position.

    For example, if the code was 'rwbg'
and your first guess was 'rbog', the
result would be 'XXO'. This means that
two of the colors you guessed (red &
green) were proper colors in the proper positions (1st & 4th). A third color
(blue) was a correct color, but was not
in the proper position, since blue is
in the 3rd position in the code, and
your guess had blue in the 2nd position.
By analyzing the results of each guess,
you attempt to break the code in as few
guesses as possible.

     NOTES on the M100 version:

     When the program is run, the M100
will ask 3 questions:

     1. Advanced Game or Basic (A/B)?
        The basic game uses a code of 4
        colors out of a possible 6. In
        the Basic game, you have 10
        tries to break the code.
        The advanced game uses a code
        of 5 colors out of a possible 8
        (with the colors PURPLE and
        SILVER added), and you have 12
        guessess to break the code.

     2. Duplicates Allowed (Y/N)?
        Ordinarily, the M100 will pick
        a code of 4 (or 5) DIFFERENT
        colors. Allowing duplicates
        will mean that codes such as
        'rwow' or 'bgpss' or 'ggggg' 
        are possible.

     3. Blanks Allowed (Y/N)?
        This will allow the M100 (and
        your guesses) to contain empty
        positions. This has the same
        effect as using an extra color.

     To avoid having to use the SHIFT
key, all answers to the questions, and
all guesses, are made in lower case.
Upper case is not accepted at any time.

     The M100 uses INKEY$ to input the
player's guesses. As a result, if you
type a letter you don't really want in
your guess, you can use the BKSP key to
erase it.

     The M100 will check to make sure
your guess consists of valid colors. If
not, an error message is printed, and
the invalid guess is not accepted. This
avoids wasted guesses due to typing
errors.

     At the end of the game, if you
don't break the code, it will be shown
to you. Win or lose, the M100 will ask:

  Quit, Play Again, or Reset (Q/P/R)?

     Q - Quit playing, go to MENU
     P - Play another game, using the
         same game parameters.
     R - Reset the game parameters. The
         M100 will redisplay the 3
         original questions, so you can
         switch between the basic and
         advanced games, etc.

         GOOD LUCK AND HAVE FUN!