The Telegraph Killer Sudoku Book 2: Challenging Number Puzzles for Adults - Perfect for Travel, Commuting & Brain Training

The ultimate test of logic, these challenging puzzles take sudoku to a whole new level. The killer sudoku is a favourite in the Telegraph newspaper and with puzzles across a range of difficulties included in the book, whether you''re a seasoned expert or new to the game, you''re sure to be utterly hooked.