The Second Book of Mathematical Puzzles and Diversions

SINCE  THE APPEARANCE  of the  first Scientific American Book
of Mathematical Puzzles  & Diversions, in 1959, popular  in-
terest in recreational mathematics has continued  to increase.
Many new puzzle  books have  been printed,  old  puzzle  books
reprinted,  kits  of  recreational  math  materials  are  on  the
market, a new topological game  (see Chapter 7) has caught
the fancy of the country's youngsters,  and  an excellent  little
magazine  called  Recreational Mathematics  has been  started
by  Joseph Madachy, a research chemist in  Idaho Falls. Chess-
men  -  those  intellectual  status  symbols -  are  jumping  all
over  the place,  from  TV  commercials  and  magazine adver-
tisements to A1 Horozoitz's  lively chess corner in The Satur-
day Review  and  the knight  on Paladin's  holster and  have-
gun-will-travel card.