From: D Herring
Subject: Al Zimmermann's Programming Contest
Date: 
Message-ID: <TbOdnVWX9Nhvng7VnZ2dnUVZ_tHinZ2d@comcast.com>
Its that time of the year again.  This time they're intersecting 
primes with specially-formed grids.

http://www.recmath.com/contest/index.php

- Daniel