Beyond Extreme Sudoku : A Collection of Some of the Toughest Sudoku Puzzles K...
Beyond Extreme Sudoku : A Collection of Some of the Toughest Sudoku Puzzles Known to Man (With Their Solutions), Paperback by Alary, Antoine, ISBN 1977647154, ISBN-13 9781977647153, Brand New, Free shipping in the US This is the second book in the "Beyond Extreme Sudoku" series which is the successor to the acclaimed Extreme Sudoku trilogy. This series aims to continue providing the most difficult puzzles to the Sudoku experts in search of new and interesting challenges.
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