THE BIGGEST SUDOKU COLLECTION YETCarol Vorderman, international Sudoku expert, has done it again! In Master Sudoku, she introduced America to the popular new number logic game, taking players from novice to expert in 200 puzzles. Now, she brings us Carol Vorderman’s Massive Book of Sudoku, the largest collection ever—containing more than 400 puzzles ranging from easy to super difficult, as well as several new, ultrachallenging kinds of Sudoku for you to try. Also included here are the rules of Sudoku and Carol’s insider tips, so that even a beginner can become a master. Carol Vorderman’s Massive Book of Sudoku is perfect for the already addicted Sudokuist or any puzzle lover just discovering the game that’s sweeping the world.