|we turn coffee into puzzles|
|Pi Day 2011 Sudoku Challenge|
|Pi Day 2010 Sudoku Challenge|
|Pi Day 2009 Sudoku Challenge|
|Pi Day 2008 Sudoku Challenge|
COLOR SUDOKU and NAKED SUDOKU each contain 180 colorful, hand-designed Sudoku variation puzzles with additional rules that will challenge you to rethink your old Sudoku strategies and devise new ones.
Both are published by Sterling Publishing and available now online and in stores, including at:
Coming Soon: Our next book - as yet untitled - will be available late 2010.
|Free example puzzles and solving tips for all twenty-four types of Sudoku variations in our COLOR SUDOKU book: Brainfreeze Puzzle Pack! Includes color variations as well as Clock Sudoku, Double Pentominoku, Sudokube, Samurai X, Three-Relay, and Hexagoku.||Find out more about Brainfreeze Puzzles and Sudoku in the links below: email@example.com.|