{"product_id":"9781802791884","title":"Mensa's Most Difficult Number Puzzles : Prove your logical and numerical abilities against 200 fiendish problems by Dr. Gareth Moore","description":"Prove your logical and arithmetical prowess by solving the exceptionally tricky problems in Mensa's Most Difficult Number Puzzles. This full-colour book features a huge variety of numerical conundrums that are certain to test even the most adept of puzzlers. Some puzzles – such as sum skyscraper and calcudoku – will test your mental maths, while others – such as touchy and bridges – will provide a trial for your logical and lateral thinking. Are you up to the fiendish challenge?,\u003cbr\u003e \u003cbr\u003e Binding: Paperback,\u003cbr\u003ePagination: 144 pages, 200 clr puzzles","brand":"Headline Publishing Group","offers":[{"title":"Default Title","offer_id":45328047964387,"sku":"9781802791884","price":16.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1701\/6275\/files\/9781802791884_222d44d9-ea1f-455e-b2c6-c8a5620a6161.jpg?v=1724584025","url":"https:\/\/www.harbourbookshop.co.uk\/products\/9781802791884","provider":"The Harbour Bookshop","version":"1.0","type":"link"}