Sam Loyd, the brilliant creator of legendary mathematical puzzles, presents even the trickiest challenges in a very vivid way. Wrapped in entertaining anecdotes and accompanied by charming illustrations, even the toughest nuts become a pleasure to crack. Following 'Eleven Men in Ten Beds', new brain teasers now challenge both the mind and imagination. A detailed solution section is included – making mathematics enjoyable not only for professionals but also for those who aspire to become one.