{"product_id":"hard-to-very-hard-calcudoku-puzzles-6x6-book-for-adults-200-puzzles-at-the-level-of-hard-to-very-hard-paperback","title":"Hard to Very Hard Calcudoku Puzzles 6x6 Book for Adults: 200 Puzzles at the Level of Hard to Very Hard - Paperback","description":"\u003cdiv\u003e\u003cp style=\"text-align: right;\"\u003e\u003ca href=\"https:\/\/reportcopyrightinfringement.com\/\" target=\"_blank\" rel=\"nofollow\"\u003e\u003cb\u003eReport copyright infringement\u003c\/b\u003e\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\u003cp\u003eby \u003cb\u003eAlena Gurin\u003c\/b\u003e (Author)\u003c\/p\u003e\u003cp\u003eThe book contains 200 Calcudoku puzzles 6x6 at the level of Hard to Very Hard. Hard puzzles 100, Very Hard puzzles 100. All riddles have only 1 solution. Each puzzle consists of a grid containing blocks surrounded by bold lines. The object is to fill all empty squares so that the numbers 1 to N (where N is the number of rows or columns in the grid) appear exactly once in each row and column and the numbers in each block produce the result shown in the top-left corner of the block according to the math operation appearing on the top of the grid. In Calcudoku a number may be used more than once in the same block.\u003c\/p\u003e\n            \u003cdiv\u003e\n\u003cstrong\u003eNumber of Pages:\u003c\/strong\u003e 122\u003c\/div\u003e\n            \u003cdiv\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.26 x 9.02 x 5.98 IN\u003c\/div\u003e\n            \u003cdiv\u003e\n\u003cstrong\u003ePublication Date:\u003c\/strong\u003e February 01, 2021\u003c\/div\u003e\n            ","brand":"BooksCloud","offers":[{"title":"Default Title","offer_id":47502466187485,"sku":"9798703264041","price":14.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/9867\/8237\/files\/VHZiRzhqWDBjcGg0U1poUVRVS2p0dz09.webp?v=1772054872","url":"https:\/\/handfulofbooks.com\/products\/hard-to-very-hard-calcudoku-puzzles-6x6-book-for-adults-200-puzzles-at-the-level-of-hard-to-very-hard-paperback","provider":"Handful of Books","version":"1.0","type":"link"}