{"product_id":"professor-hoffmanns-best-math-and-louis-hoffmann-9780486454740","title":"Professor Hoffmann's Best Math and Logic Puzzles","description":"You invite a gentleman to stand in the middle of the room. Taking a piece of chalk, you undertake to draw round him a circle which he cannot jump out of. How is it to be done?\u003cbr\u003eThis riddle, \"The Charmed Circle,\" is but one of dozens of antique treats from a classic collection of brainteasers. Professor Hoffmann published his great treasury of old and new puzzles in 1893. Since then, puzzle aficionados have reveled in the Victorian charm of the professor's challenges. This compilation features some of the most pleasantly perplexing highlights from the original edition -- 158 puzzles in all, with complete solutions.\u003cbr\u003eFour different kinds of puzzles include those involving arithmetic, a selection of word and letter puzzles, puzzles with counters, and \"quibble\" or \"catch\" puzzles, which rely upon a double meaning or a clever interpretation of the question -- such as \"The Charmed Circle,\" above, in which the triumphant puzzle-solver draws a chalk line around the subject's waist.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Louis Hoffmann\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 0486454746\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9780486454740\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Dover Publications\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 06\/26\/2007\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 160\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.38lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 8.32h x 5.42w x 0.32d","brand":"Louis Hoffmann","offers":[{"title":"Paperback","offer_id":48443499249919,"sku":"9780486454740","price":7.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_2faecba7-3f44-4d6e-a7d7-7fdd1838664d.jpg?v=1777205898","url":"https:\/\/www.whiterainbookhouse.com\/products\/professor-hoffmanns-best-math-and-louis-hoffmann-9780486454740","provider":"WR Book House","version":"1.0","type":"link"}