
!Queens          E.T.Emms
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   This is a classic combinatorial problem. It is required to
place 8 chess queens on a standard 8x8 chess board so that no
queen is attacking any other queen.  You are presented with the
board and clicking on an empty square will place a queen there if
is not violating the condition of not attacking another queen.
The usual 'beep' denotes an illegal move. To remove a queen, you
can click on it. A record of how many queens you have
successfully placed is given.

!QueensArc
**********

    This shows the computer solving the queens problem. You may
choose the size of board. Note that for the larger boards it may
take a long time to reach each solution.
    It will be found that for the standard chess-board 8x8 the
computer finds 92 solutions.  In fact there are really only 12
distinct solutions with the rest being obtained by rotations of
the board and by reflections. However, no attempt has been made
in the program to eliminate these 'repeats' and this applies in
general to the other computer-solving programs.
