Nine cards are disposed as shown:

           +---+---+---+
           | a | b | c |
           +---+---+---+
           | d | e | f |
           +---+---+---+
           | g | h | i |
           +---+---+---+

1) There are, at least, two Aces, two Kings, two Queens and two Jacks.
2) Every Ace borders a King and a Queen.
3) Every King borders a Queen and a Jack.
4) Every Queen borders a Jack.
Note: "border" means "touch" horizontally or vertically, not diagonally.

Identify the nine cards.

<DIR> <DIR> <DIR> <DIR> <DIR> <DIR> <DIR> <DIR> <DIR> <DIR> <DIR> <DIR>

first  row

A                      K Q

Second row

Q J J

Third row

A K Q

</DIR></DIR></DIR></DIR></DIR></DIR></DIR></DIR></DIR></DIR></DIR></DIR>

Posted by William Bettley on 2005-12-09 20:14:53