Condition: New,UPC: 9781250025272,Publication Date: Mon, April 1, 2013,Type: Paperback ,
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Only the bravest sudoku solvers should take on this collection of all-new deviously difficult puzzles. This is the perfect collection to put your solving skills to the test!
Features: 200 hard puzzles Big grids for easy solving Introduction by New York Times crossword editor Will Shortz