{"product_id":"complex-math-puzzles-jeff-heldt-9781719873512","title":"Complex Math Puzzles: CalcuDoku Puzzles - The Best Japanese Puzzles Collection","description":"\u003cp\u003e\u003cb\u003eCalcuDoku\u003c\/b\u003e is a mathematical and logical puzzle loosely similar to sudoku. It was invented by a Japanese mathematics teacher Tetsuya Miyamoto. The 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: - Each row contains exactly one of each digit. - Each column contains exactly one of each digit. - Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (×), and division ( ). - Unlike Killer Sudoku, digits may repeat within a block.\u003c\/p\u003e\u003cp\u003ecalcudoku puzzle books - math puzzle books for adults - math puzzle books - math puzzle for adults - mathematical puzzles - mathematical puzzle books - mathematical puzzle books for adults - mathematical puzzles with answers - mathematical puzzle games - mathematical puzzle books - mathematical games and puzzle - mathematical crossword puzzle with answers - mathematical jigsaw puzzle - japanese mathematical puzzle - mathematical logic puzzle - mathematical matrix puzzle - mathematical mind puzzle - mathematical matching puzzle - math puzzles for middle school - math puzzle brain teasers\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Jeff Heldt\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1719873518\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781719873512\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 08\/24\/2018\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 116\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.40lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.00h x 6.00w x 0.28d","brand":"Jeff Heldt","offers":[{"title":"Paperback","offer_id":47930876461311,"sku":"9781719873512","price":10.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_e7c28ae9-3bb4-438d-8e4b-9a25c511819a.jpg?v=1766344886","url":"https:\/\/www.whiterainbookhouse.com\/products\/complex-math-puzzles-jeff-heldt-9781719873512","provider":"WR Book House","version":"1.0","type":"link"}