Sudoku Puzzle Book 800 Puzzles

Have fun while exercising your brain. Sudoku helps delay dementia by making your brain work in a different way and gives you a great sense of accomplishment. This sudoku book contains 800 puzzles with two 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"