Ebook: Mathematical Recreations and Essays (11th Rev. Ed)

This classic work offers scores of stimulating, mind-expanding games and puzzles: arithmetical and geometrical problems, chessboard recreations, magic squares, map-coloring problems, cryptography and cryptanalysis, much more. "A must to add to your mathematics library." — The Mathematics Teacher. Index. References for Further Study. Includes 150 black-and-white line illustrations.