Large Print 100 sudoku puzzles in Hard Level. Suitable for Seniors and Kids Sudoku grids are large, very easy to read, and fill out8.5 x 11 inch book sizeHigh-Quality Paper and Printing Every single puzzle is spread out on one full page, solving could be easy on your eyesAn answer key for those sudoku puzzle This excellent book contains 100 hard Sudoku puzzles which are great for those who want to keep the brain sharp. Together with the solutions behind the book just in case you get stuckIf you'd like to boost the performance of your brain and Enhance the effectiveness of your brain function. You should use this sudoku puzzle book. You could reduce your probabilities of Dementia or Alzheimer's simply by solving Sudoku puzzles. By using this selection of sudoku puzzle books you would experience enhanced brain capabilities for example focus, logical thinking and memory. Choose your book today by clicking on the BUY NOW button at the top of this page.