Carol Vorderman's How to Do Extreme Sudoku

Carol Vorderman, the UK's best-known mathematician and bestselling author of How To Do Sudoku and Carol Vorderman's Massive Book of Sudoku , returns once again with the perfect book for all those Sudoku addicts champing at the bit to take their skills to the next stage. In theory, Sudoku is a simple puzzle, but taken to a higher level, it can be teeth-grindingly infuriating. With the clear, step-by-step instructions, and start-to-finish examples that made her previous books such a success, Carol shows you how to acquire the skills you need to tackle the toughest Sudoku. And once you're ready to flex your new Sudoku muscles, 300 brand-new, hand-crafted puzzles await you: from regular Sudoku puzzles ratcheted up to severest of difficulty levels to new favourites such as Killer Sudoku, Squiffy Sudoku and Sudoku 16. You may be a Sudoku Master, but will you be able to master Extreme Sudoku ?