The Telegraph's sudoku collections are the most extensive you can buy. This second book of original puzzles is compiled with both addicts and novices in mind: each sudoku is graded according to its level of difficulty, from 'gentle' through 'moderate' and 'tough' to 'diabolical'. All solvers will find Michael Mepham’s introductory tutorial an invaluable guide, and solutions are included at the back of the book.
Michael Mepham compiles crosswords and sudoku puzzles for the Telegraph.