Major Percy Alexander MacMahon is one of the nineteenth century's forgotten mathematical heroes. Mathematicians know him for his classic work Combinatory Analysis, a book still in print. He also published four papers on recreational topics. New Mathematical Pastimes develops some of these ideas. It has had a widespread and persistent influence but is still unknown to many recreational mathematicians and the puzzle community. The book is hard to come by and so it seems fitting to produce a reprint to celebrate the 150th anniversary of his birth. MacMahon set out to demonstrate the principles...