'When a man says, "I have never solved a puzzle in my life," it is difficult to know exactly what he means, for every intelligent individual is doing it every day. If there were no puzzles to solve, there would be no questions to ask; and if there were no questions to be asked, what a world it would be!' - Henry Ernest DudeneyThis book of mathematical brain teasers was first published as1917 to satisfy popular demand, as Dudeney's puzzles regularly appeared in newspapers and magazines. He included new twists on old puzzles that had interested the world for generations, and an abundance of new ones, some reasonably easy and others are 'very hard nuts indeed'.

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