Sam Loyd (1841-1911) was America's greatest originator of puzzles. For more than 50 years, his ingenius posers, appearing in numerous newspaper and magazine articles, stumped and delighted an American public running into the millions. After Loyd's death, his son issued a vast collection of these problems in a book called Cyclopedia of Puzzles - probably the most fabulous and exciting collection of puzzles ever assembled in one volume. Now Martin Gardner has selected the choicest mathematical puzzles contained in the long out-of-print Cyclopedia, editing each one for accuracy and clarity but in such a way as not to sacrifice the unique style and historical flavor of the origials. This is the second volume of Gardner's selections and contains 166 of Loyd's most brilliant and original creations together with the 150 line drawings and diagrams with which they were originally illustrated.