To get a feel for what you'll be up against, try the puzzles below. Solve them and we may have a slot for you in our engineering department (we love ...
An encyclopedia entry describing the rules, history, strategies and variants of Sudoku. Notes that these are a type of "latin square" which have been analyzed since ancient times.
Brain teasers, puzzles, riddles, games and optical illusions.
Features instructional games and puzzles based on a variety of math topics. Includes more serious articles about the language of math and related links.
Celebrates math puzzles and mathematical recreations.
Gallery of free online jigsaw puzzles, with 6-247 pieces and unique piece shapes. Includes daily puzzle, e-cards, and an email service for the daily puzzle.
Home site for the Binary Arts line of mind puzzles.
