Welcome to The Penguin Sudoku Challenge: with 1 sudoku puzzle for every day of the year 2 challenge you in every way. Not to mention that, with batteries and wayfinder as well, this book now gives you a chance to play japan's 3 favourite brain puzzles. Perfect 4 sharpening your brain and honing your logic. from beginner to mind-boggling difficulty-our 5 levels sudoku could knock you for 6. in 7th heaven when you complete them, you'll 8 giving up on any of these – but those 9 by nines won't complete themselves . . .
