Henry Ernest Dudeney was England’s greatest puzzle-maker, and Amusements in Mathematics (1917) is his treasury: four hundred and thirty problems spanning money puzzles, age and kinship riddles, clock conundrums, magic squares, route problems and the geometry of dissections, each with its solution and Dudeney’s dry commentary attached.
Generations of recreational mathematicians — Martin Gardner above all — mined this book for material, and much of it still bites today. Download the free EPUB and try your wits against the man who spent a lifetime perfecting the art of the elegant trap.