Sudoku Puzzle Book 800 Puzzles, 200 Easy, 200 Medium, 200 Hard and 200 Extra Hard: Four Levels Of Sudoku Puzzles In This Jumbo Size Book

Have fun while exercising your brain. Sudoku helps delay dementia by making your brain work in a different way and giving you a great sense of accomplishment. This jumbo book contains 800 puzzles with four levels of increasing difficulty to improve your game. There are four puzzles per page and in case you get stuck the solutions are at the end of the book. 8.5" X 11"