Mega Sudoku - Editors of Chartwell Books

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Put your math skills to the test with these 300 number puzzles, organized into 50 easy, 225 medium, and 25 difficult puzzles.Mega Sudoku offers mega fun and satisfaction, plus science-backed benefits to your cognitive function, memory, and mood. This beautifully designed puzzle book features:300 sudoku puzzles, providing hours of brain-sharpening entertainmentA range of challenge levels, from easy to difficultLayflat format that keeps the book open while you solveTake a break from the screen, unwind, and get your mind in shape with this giant volume of sudoku puzzles.