The next installment in the popular Jumbo Sudoku series, Jumbo Sudoku Brain Bender includes over 300 puzzles. The popular numerical brainteaser is a fun way to work your brain, and sudoku fans of all levels will love this collection. Jumbo Sudoku Brain Bender includes classic sudoku as well as-Samurai, Kakuro, Killer, Battleship and "Son of Sudoku" Futoshiki puzzles. All the puzzles are rated on a scale of tricky to fi endish. If you are looking to fi nally be challenged by sudoku, this is the book you have been waiting for. Sudoku puzzles continue to run in top newspapers and magazines across the country. Because every puzzle is completely different, sudoku appeals to puzzle-fans of all ages.