Databases and Logic
Puzzles and Combinatorics
Pencilcase puzzles and others
Cornmaze in Illinois
Homer, Lisa, mazes and
You Move Mount Fuji, by William Poundstone; interesting book on
puzzle interviews. A lot of the puzzles are online too.
tons of interesting puzzles of all types
addictive game. Not the best version (that would probably be
but that requires installation).
another addictive game. Best played with real pieces.
planar graph applets, play with straight-line drawings of graphs.
Euler's theorem, a
Cryptography and Algebra
- The Code Book, Simon Singh, Anchor, 2000; Popular historical
account of the history of cryptology, with a fair amount of technical
detail. An excellent and instructive read.
introduction to modular arithmetic
webpage (how does it work?)
Last updated: August 18th, 2006.