Genius-Level Sudoku: Over 300 Super-Difficult Puzzles from the Japanese Masters Who Invented the Game (Nikoli Publishing)(Paperback)

Warning: Not for the Sudoku faint-of-heart Introducing a book of extra tough, extra thorny--and extra addictive--puzzles specially designed for people with Einstein-level Sudoku IQs. Sharpen your pencil. Warm up your gray matter. And pit your wits against the top Japanese puzzle makers in the world. Genius-Level Sudoku features more than 300 brand-new challenges, all rated Good Luck
The latest collection from Nikoli, the company that invented the game and helped launch Sudoku-mania worldwide over twenty years ago, it joins The Original Sudoku, X-Treme Sudoku, Expert Sudoku, and other books and calendars with over 3 million copies in print. Nikoli is famous not only for being the first to make Sudoku puzzles, but for being the best--each puzzle is handcrafted, not churned out by a computer program, which makes it uniquely elegant and
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