Dudeney Henry Ernest. Amusements in Mathematics

London, New York: Nelson and Sons, 1917. — 266 p.Развлечения по математике.
One of the largest puzzle collections -- 430 brainteasers based on algebra, arithmetic, permutations, probability, plane figure dissection, properties of numbers, etc. Intriguing, witty, paradoxical productions of one of the world's foremost creators of puzzles. Full solutions. More than 450 illustrations.