4720764
9780486450773
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.
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