{"product_id":"mensas-most-difficult-maths-tests-prove-your-arithmetic-prowess-by-solving-the-toughest-numerical-puzzles","title":"Mensas Most Difficult Maths Tests: Prove your arithmetic prowess by solving the toughest numerical puzzles","description":"\u003cp\u003eMensas Most Difficult Maths Tests provides an exceptional challenge for even the most adept of puzzlers. This full-colour book features a huge variety of numerical brainteasers that will test even the most mathematical of minds. With puzzles ranging from the familiar - such as kakuro and killer sudoku - to the exotic - such as sum skyscraper and calcudoku - this fiendish puzzle book will keep you entertained for hours. Are you up to the challenge?\u003c\/p\u003e","brand":"WELBECK","offers":[{"title":"Default Title","offer_id":45875462275270,"sku":"DADAX1787394298","price":10.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0695\/9389\/1014\/files\/41uDFFZdS7L.jpg?v=1779607400","url":"https:\/\/ergodemedia.com\/products\/mensas-most-difficult-maths-tests-prove-your-arithmetic-prowess-by-solving-the-toughest-numerical-puzzles","provider":"Ergodemedia","version":"1.0","type":"link"}