For two decades, self-taught mathematician Henry E. Dudeney wrote a puzzle page, "Perplexities," for The Strand Magazine. Martin Gardner, longtime editor of Scientific American's mathematical games column, hailed Dudeney as "England's greatest maker of puzzles," unsurpassed in the quantity and quality of his inventions. This compilation of Dudeney's long-inaccessible challenges attests to the puzzle-maker's gift for creating witty and compelling conundrums. This treasury of intriguing puzzles begins with a selection of arithmetical and algebraical problems, including challenges involving...