The Ultimate Sudoku Puzzle BookGrab this massive classic Sudoku puzzles of varying difficulty levels, expertly designed and graded.There are plenty of puzzles to enjoy in this jumbo compilation, with 3 different levels of difficulty, which makes it suitable for everyone in love with this super addictive game:100 Easy puzzles for beginners and intermediate or when you want to relax.100 Medium problems which will give a bigger challenge to your brain.50...