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Will Shortz Presents Killer Sudoku: 200 Hard Puzzles
Will Shortz Presents Killer Sudoku 200 Hard Puzzles Author:Will Shortz Watch out! These puzzles are mind melting! But if you dare, grab a pen and take on these two hundred all-new extra challenging puzzles.
Features: 200 hard puzzlesBig grids for easy solvingIntroduction by legendary puzzlemaster Will Shortz