Open Directory - Games: Puzzles: Brain Teasers: Sudoku -See also: Games: Puzzles: Brain Teasers: Mathematical: KenKen (4) Games: Video Games: Puzzle: Sudoku (5) This category in other languages: Czech (15)
http://www.dmoz.org/Games/Puzzles/Brain_Teasers/Sudoku/
Sudoku Brain Teaser Solves Difficult Puzzles -Take the Sudoku brain teaser challenge! Sudoku is the greatest of all brain teasers. Love logic? Try it! It's addictive!
http://www.sudokuessentials.com/brain-teaser.html
BrainBashers : Daily Sudoku -Offers a daily Sudoku with six levels of difficulty, with an archive of old puzzles and an interactive assistant.
http://www.brainbashers.com/sudoku.asp
Brain Teasers Network - Sudoku -Online Sudoku at the Brain Teasers Network, A free online collection of brainteasers, puzzles and games that challenge the mind
http://www.brainteasersnetwork.com/sudoku/x_sudoku.php
BrainBashers : Puzzles and Brain Teasers -Brain teasers, puzzles, online games ... mind riddles, online games, Sudoku, crossword puzzles, stereograms, jigsaw puzzles, optical illusions, brain teasers and so much ...
http://brainbashers.com/
Brain Teasers | Sudoku Strategy -Sudoku has its origins in the East and it is a very unique puzzle game.As if the r 00004000 egular versions weren't challenging enough, which I think they are, a ...
http://sudokustrategy.net/tag/brain-teasers/
Will Shortz Sunny Sudoku Brain Teaser | eBay -Will Shortz Sunny Sudoku Brain Teaser in Toys Hobbies , Puzzles , 1970-Now , Sudoku | eBay
http://www.ebay.com/itm/Shortz-Sunny-Sudoku-Brain-Teaser-/160551898321
Puzzle Square: Brain Teasers: Including Sudoku, Math Puzzlers ... -Alibris has Puzzle Square: Brain Teasers: Including Sudoku, Math Puzzlers, Number Grids, and Logic Puzzles and other books by Luke Hall, including new & used copies ...
http://www.alibris.com/search/books/qwork/9291707/used/Puzzle%20Square%3A%20Brain%20Teasers%3A%20Including%20Sudoku%2C%20Math%20Puzzlers%2C%20Number%20Grids%2C%20and%20Logic%20Puzzles