With this medium printing book, more than 50 pages with 105 Sudoku, 2 puzzles per page; you will not have time to get bored during your trips, work breaks or in the comfort at your home. There are three different levels of difficulty that will help you improve your levels of concentration and memory. This is a great workout for your brain. - Difficulty Levels: 35 Hard puzzles, 35 Very Hard puzzles and 35 Extreme puzzles - Instructions and Solutions are included - Print Size: 6.69" x 9.61" - Suitable for everyone
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