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Publication Date: 2006
Publisher: Dover Publications, Incorporated
Puzzles in the daily paper no match for your practiced powers of deduction? Here are 101 chances for you to put your talents to the test. Designed by a sudoku master for highly advanced enthusiasts, these 9 x 9 square and 16 x 16 square puzzles will challenge even the most skilled experts.Pazzelli, John is the author of 'Extreme Sudoku', published 2006 under ISBN 9780486450773 and ISBN 0486450775.