{"product_id":"4th-grade-logic-puzzles-ted-warner-9781981074280","title":"4th Grade Logic Puzzles: CalcuDoku Puzzles - Best Logic Puzzle Collection for Kids","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\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Ted Warner\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1981074287\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781981074280\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 05\/11\/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":"Ted Warner","offers":[{"title":"Paperback","offer_id":46372474159359,"sku":"9781981074280","price":10.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_9d6a7b06-1409-4f6a-85ab-8367e75bff74.jpg?v=1732726042","url":"https:\/\/www.whiterainbookhouse.com\/products\/4th-grade-logic-puzzles-ted-warner-9781981074280","provider":"WR Book House","version":"1.0","type":"link"}