{ "item_title" : "Complex Math Puzzles", "item_author" : [" Jeff Heldt "], "item_description" : "CalcuDoku 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.calcudoku 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", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/71/987/351/1719873518_b.jpg", "price_data" : { "retail_price" : "10.24", "online_price" : "10.24", "our_price" : "10.24", "club_price" : "10.24", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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