William H. Benson, Oswald Jacoby - Games - 1981 - 142 pages
No advanced mathematical knowledge to construct these three-dimensional mind bogglers; including pandiagonal and perfect cubes ? many entirely new constructions, too. 111 figures.
Oswald Jacoby, William H. Benson - Science - 1996 - 191 pages
Treasury of stimulating, challenging brainteasers includes puzzles involving numbers, letters, probability, reasoning, whole numbers, more. The Enterprising Snail, The Fly and ...