{"product_id":"creator-of-puzzles-calcudoku-mykola-krylov-9781986634540","title":"Creator of puzzles - Calcudoku 240 Extreme (Volume 15)","description":"Calcudoku (also known as \"Mathdoku\") is a mathematical and logical puzzle loosely similar to Sudoku.\u003cbr\u003eThe objective is to fill the grid in with the digits 1 through N (where N is the number of rows or columns in the grid) such that: \u003cbr\u003e- Each row contains exactly one of each digit.\u003cbr\u003e- Each column contains exactly one of each digit.\u003cbr\u003e- Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (×), and division ( ).\u003cbr\u003e- Unlike Killer Sudoku, digits may repeat within a block.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Mykola Krylov, Veronika Localy\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 198663454X\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781986634540\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Createspace Independent Publishing Platform\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 03\/19\/2018\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 62\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.21lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.00h x 6.00w x 0.13d","brand":"Mykola Krylov","offers":[{"title":"Paperback","offer_id":46640660250879,"sku":"9781986634540","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_921e56ad-ea51-4c23-92a3-0eac81531194.jpg?v=1740670209","url":"https:\/\/www.whiterainbookhouse.com\/products\/creator-of-puzzles-calcudoku-mykola-krylov-9781986634540","provider":"WR Book House","version":"1.0","type":"link"}