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.

(In reply to Pooter yet!! by pcbouhid)

Well, I can't read derek's mind, but I think he was simply affirming your suspicion that he used a computer -- as opposed to reasoning.  I didn't read any offensive intent. 

Posted by Ken Haley on 2005-10-18 01:32:55