Sam Loyd's Cyclopedia of 5000 Puzzles, Tricks, and Conundrums (With Answers)
A super collection of puzzles.. in a grt bookish way presented with full artwork and all in public domain. Very very nice.. grt if you wanna just rack your brains or prep for some exam
HERE is the site :cool2:
Code:
http://www.mathpuzzle.com/loyd/
While at it,, this is a pretty good site too
[url]http://www.mathpuzzle.com/[/url]