Sudoku: Four levels of difficulty from easy to insane Book 27

Relieve boredom and stress of your daily life by playing Sudoku and stimulating your brain Whether you're already a pro or you're looking to build your abilities this book has enough Puzzles to challenge and entertain you for hours. There are 200 hard puzzles with four puzzles to a page and Four levels of difficulty from easy to insane (Book size 8.5 by 11 inches )