The book “Professor Stewart's Mathematical Puzzles” by the famous mathematician and popularizer of mathematical science Ian Stewart is a collection of problems, puzzles and fascinating stories. The narrative in the book is based on the adventures of the detective genius Hemlock Soames and his faithful friend, Doctor John WhatsApp. They puzzle over solving problems with a mathematical background. The author pays attention to mathematical dates, prime number mysteries, theorems, statistics and many other interesting topics. This smart, fun book demonstrates the beauty of mathematics. From the book, the reader will learn about the shape of an orange peel, Euclidean scribbles, pancake numbers, the square peg hypothesis and other solved and unsolved problems. The book will be of interest to anyone who is not indifferent to mysteries, loves mathematics and puzzle solving, or, if not solved, then considered in the light of various excerpts from the extensive archive of Dr. John WhatsApp, containing case notes, newspaper clippings and all sorts of memorabilia related to Soames; with separate inserts from other sources.