{"product_id":"9781899618781","title":"Cryptic Cross Numbers","description":"\u003cp\u003eExtending the principle of cross numbers, these puzzles aim at those of above average mathematical ability, particularly those who enjoy games of strategy. Written from a classroom perspective, the puzzles focus on key aspects of the curriculum and are graded according to difficulty. Solved deductively, the puzzles difficulty can be moderated by using hints provided. \u003c\/p\u003e\u003cp\u003eAnswers are also provided for teacher or selfmarking.\u003c\/p\u003e","brand":"Tarquin Publications","offers":[{"title":"Default Title","offer_id":50079508955376,"sku":"9781899618781","price":15.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781899618781","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}