The 4 cards that A is to reorder can be in any of 4!=24 orders.
It would be easy enough to work out a system where B picks a card from 1 to 24 to indicate which card is whose. There are two problems that must be overcome:
1. The needed card may already be taken.
2. If there are other cards form 1 to 24, A won't know which is B's card.
Problem 1. can be overcome by letting B pick a card over 24 and then A would just subtract 24 from it. (Take the card Mod 24) If that card is taken as well then add 48 etc.
Problem 2 is the big problem: How can a card indicate which one it is and also indicate the proper order?
Posted by Jer
on 2007-05-11 13:20:12