The story of the puzzles, brainteasers, maps, codes, and other mysteries that have entertained and confused the world over the last century From Sudoku to crosswords, Victorian parlor games to lateral thinking, cryptograms to today?s latest brainteasers, The Riddles of the Sphinxtells the little-known histories behind a host of puzzles, word games, and riddles and introduces the extraordinary geniuses, eccentrics, rivals, code crackers, and obsessives...