The Big Book of Extreme Sudoku: 600 Very Easy to Extremely Hard Large Print Puzzles Sudoku Puzzles that are also Easy To See Give your brain a healthy workout without straining your eyes. The 600 puzzles in Brain Ballet's BIG Book of Extreme Large Print Sudoku workbook are spaced out with two puzzles per page-to allow you to focus all of your attention on solving these fun problems. These fun sudoku puzzles boost...
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