which can be made into a game
(though some of these puzzles can be quite hard
wrote a column on this subject called Mathematical Games
in Scientific American
, including such subjects as tiling
's game of life
numbers and lots of other number theory
, etc. These columns were reprinted in a series of books
Douglas Hofstadter was Gardner's successor.
Most of the older recreational mathematics which was at all interesting has turned into old chestnuts.