From Dr Gareth Moore, the bestselling author of over 35 puzzle books, comes the world's most comprehensive collection of logical puzzles, covering all major types.It has everything from Sudoku and Kakuro through to Hanjie and Slitherlink, plus a whole lot more besides such as Tapa, Fences, Yajilin, Nurikabe, Fillomino and many, many others.All of the puzzles use pure logic, requiring no language or cultural knowledge to solve, so the book is suitable for everyone. Fun and addictive, these puzzles offer a fantastic mental workout.Each of the more than 60 types of puzzle is presented with full instructions in seven carefully graded difficulty levels, from Beginner right through to Master, so whatever your experience you'll find the perfect challenge.