MathPuzzle.com

A very good source of pointers to Mathematical Games and Puzzles is
MathPuzzle.com . The website is maintained and copyrighted by Ed Pegg
Jr, 1607 Park Haven, Champaign, IL 61820. If you've made a good, new
math puzzle, you may send it to Ed at ed@mathpuzzle.com. If you are a
real enthusiast of puzzles and mathematics games, you may join his
moderated recreational mathematics email list at
http://groups.yahoo.com/group/mathpuzzle/.