Sudoku is an easy to learn logic-based puzzle game, which has taken the world by storm. The puzzles in this book are designed for those who are experienced at solving Sudoku puzzles, and I believe that they will prove to be a satisfying challenge. Whether you're on a bus, train, plane or just relaxing on your couch, you'll be able to enjoy Marvellous Sudoku wherever you are. This book contains 200 extreme level puzzles.