{"product_id":"calcudoku-yurii-naidonov-9798648191389","title":"Calcudoku: 200 Expert Puzzles 6x6 vol. 8","description":"Calcudoku (also known as \"Mathdoku\") is a mathematical and logicalpuzzle loosely similar to Sudoku.\u003cbr\u003eThe objective is to fill the grid in with the digits 1 through N (where N isthe 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 whichachieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication ( ), and division (\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Yurii Naidonov\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 8648191386\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9798648191389\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 06\/10\/2020\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 138\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.43lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.02h x 5.98w x 0.30d","brand":"Yurii Naidonov","offers":[{"title":"Paperback","offer_id":45897159901439,"sku":"9798648191389","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_7395de6b-676d-4d78-91b0-71b743c6516f.jpg?v=1721373302","url":"https:\/\/www.whiterainbookhouse.com\/products\/calcudoku-yurii-naidonov-9798648191389","provider":"WR Book House","version":"1.0","type":"link"}