Daily Telegraph Brain Boosting Sudoku

This new collection has everything you have come to expect from The Daily Telegraph’s puzzles – and more. The book 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 the introductory tutorial an invaluable guide, and solutions are...