{"product_id":"9781787394292","title":"Mensa's Most Difficult Maths Tests : Prove your arithmetic prowess by solving the toughest numerical puzzles","description":"\u003cp\u003eMensa's 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":"Rye Books","offers":[{"title":"Default Title","offer_id":41186437922968,"sku":"9781787394292","price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/1368\/0730\/products\/9781787394292.jpg?v=1635029597","url":"https:\/\/ryebooks.co.uk\/products\/9781787394292","provider":"Rye Books","version":"1.0","type":"link"}