The Sudoku Addict's Workbook: 150 Brand-New Puzzles with Gridlock-Busting Tips and Techniques
Unfortunately Mr Millar has missed the point of this book. On Page 7 it says:"Before the puzzles you'll find a 10-page quick reference guide to the solving techniques you'll need to complete this book. This isn't a full sudoku-solving tutorial (for that try my book Mastering Sudoku), but should be enough to jog your memory"Sudoku Addict's Workbook is for people who've already studied sudoku solving, and want a set of carefully-graded puzzles on which to practice their skills. It's not "How to play tennis", it's 150 practice games on court with a coach giving you tips on which shots to play in each situation. There are dozens of sudoku tutorial books out there (including my own Mastering Sudoku), but few (if any) which provide this kind of guided development.Incidentally, box claims are mentioned in the quick reference guide, on page 10 under "Intersection claims (row, column and box)". Space was at an absolute premium of we were going to pack all 150 puzzles in, and we didn't have room to mention row claims, column claims and box claims individually. Sorry if that's caused confusion.Paul Stephens