The Knots Puzzle Book

Most of us can tell the difference between a reef knot and a granny, but can we tell when a knot is not a knot at all, but really an unknot? Through a series of interesting puzzles, Heather McLeay leads us gently into an understanding of the theory of knots. Many of them can be solved by looking and thinking, but for others, having a length of real string or rope on hand would be a great help. In all, this is a colorful and original book, offering a delightful introduction to knot theory. It is one that will appeal to anyone with a liking for puzzles and an interest in curious ideas of a mathematical nature.