Black Belt Sudoku by Michael Rios: Book Cover

    Black Belt Sudoku by Michael Rios

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    (Paperback)

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    Synopsis

    Sudoku Puzzles for Everyone, From Novices to Masters! At home, while commuting, during lunch hours...people around the world are eagerly working on Sudoku puzzles whenever and wherever they can!

    Created in the United States, these intriguing conundrums were originally called Number Place puzzles. Their recent rise in popularity began in Japan, where the name translated as sudoku. Here we've indicated the skill level necessary to complete each sudoku book in this series in the same way Japanese karate levels are ranked: by different colored belts. This is the Black Belt volume, filled with puzzles that will provide a sly, absorbing test for even the best, most proficient experts.

    It's impossible to complete only one sudoku at a time, because solving them is habit-forming!

    Customer Reviews

    Extreme Sudokuby Anonymous

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    April 27, 2009: Michael Rios has created excellence in an extreme Sudoku. This composite of puzzles are very difficult; makes one be creative in solving them in the seemingly unsolvable format; for Sudoku enthusiasts who require a mind-wrenching challenge.

    shocked at title Black Beltby Anonymous

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    August 05, 2008: Was not insulted, but all puzzles were easily finished and I do not consider myself an expert.


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