Book excerpt: Sharpen your mind and strengthen your logic skills with one hundred newSudoku-by5 logic puzzles, complete with step-by-step deductive solutions forevery puzzle. In this series, puzzle difficulty is ranked as "Challenging" withnumeric rankings ranging from 15 to 20.This book is a new type of Hybrid eBook/Print book. A hybrid book consists of atraditional paperback book, containing puzzles and answers, and an on-linecompanion set of web pages for the print book, containing detailed step-by-stepsolutions for each puzzle, instructions for each puzzle type, and otherinformation related to the paperback version of the book. Each print book titlehas a unique Internet web URL that points the reader directly to the eBookinformation for that particular print book. You can preview the on-line extrasand step-by-step solutions for this particular book at its URL:http://www.grouppuzzles.com/titles/B1DEB339/