Mastering Sudoku Week by Week: 52 Steps to Becoming a Sudoku Wizard
Paul Stephens is the creator of Sudoku@paulspages, Google's top-ranked website for searches on "solve Sudoku." He has contributed solving guides and puzzles to books and magazines, and his puzzle-generating software is used by newspaper puzzle suppliers and other websites.--This text refers to an alternatePaperbackedition.