Sudoku Book 1,500 Extra Hard Puzzles: Sudoku Puzzle Book With Only One Level of Difficulty (Sudoku Book Challenger Series) (Volume 43)

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Amazon Price: $18.99 $18.99 (as of September 22, 2017 10:00 am – Details). Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on the Amazon site at the time of purchase will apply to the purchase of this product.

Sharpen up your mind and improve your memory by playing Sudoku every day. Sudoku stimulates your mind, increases concentration and makes you feel happy by giving you a sense of accomplishment. It is said it can also reduce the chance of developing Alzheimers.

This Sudoku puzzle book contains 1,500 puzzles with a single level of difficulty, so there are no wasted puzzles. There are 4 puzzles per page and solutions are at the end of the book.

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