Here is an arrangement of 19 cards. What card should go in the bottom right corner?

4♣  4♠  3♦  3♥   2♥

9♠  7♦  6♥  2♣   4♥

8♦  4♥  5♠  A♣   7♦

6♥  3♠  2♣  8♦   ? 

The first 4 cards, in suit-alphabetical order, of the title of this problem is this problem's PID.  So what does that mean?  The answer must be the 4 of Diamonds.

Applying this "rule" to each row of cards, I list the following PIDs (A=1), and the remaining card for each row:

4511, 4H
4334, 2H
2769, 4H
1845, 7D
2863, 4D

If one examines the text of each problem of the given PIDs, one will find the first occurance of the letter that begins one of the 4 suits (C, D, H, S) occurs in the position of the rank of the fifth card and matches the corresponding letter to its suit.

4511, 1st letter is H --> Here...
4334, 2nd letter is H --> The...
2769, 4th letter is H --> I'm thinking...
1845, 7th letter is D --> A palindrome...

Therefore,...
2863, 4th letter is D --> Find...
AND, thus, the answer is then 4 of Diamonds

(I probably would not have found this solution, if not for "Another hint", Dustin)

Edited on April 4, 2006, 2:16 pm

Posted by Dej Mar on 2006-04-04 14:02:17