Master the Numbers Game That's Taking the World by Storm Whether you're one of the millions of people already obsessed with the number puzzles called Sudoku (a Japanese logic game that's like a combination of a crossword puzzle and a Rubik's Cube) or you're just being introduced to this addicting game, ''Master Sudoku'' has a puzzle for you. Here, the UK's leading Sudoku expert, Carol Vorderman, offers 200 puzzles for Sudokuists at every level, ranging from easy to super difficult, with clear instructions and crucial secrets that will help you finish puzzles in record time. The faster you are, the higher your score! Engrossing, challenging, and totally addictive, ''Master Sudoku'' is chock-full of fun.