{"product_id":"killer-sudoku-puzzle-book-for-adults-400-hard-to-very-hard-puzzles-9x9-volume1-9798742696278","title":"Killer Sudoku Puzzle Book for Adults: 400 Hard to Very Hard Puzzles 9x9 (Volume1)","description":"\u003cb\u003eThe book contains 400 excellent Killer Sudoku puzzles 9x9.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eHard puzzles 200 \u003c\/li\u003e\n\u003cli\u003eVery Hard puzzles 200\u003c\/li\u003e\n\u003cli\u003e All riddles have only 1 solution. \u003c\/li\u003e\n\u003cli\u003e 2 puzzles per page. \u003c\/li\u003e\n\u003cli\u003eThe font size is correct you will not have to strain your eyes when solving puzzles.\u003c\/li\u003e\n\u003cli\u003eHigh quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through). \u003cul\u003e\u003cbr\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/b\u003e Killer Sudoku is based on the original Sudoku grid, with the same rules and numbers-1 to 9, but with an added mathematical challenge. The only difference is the killer Sudoku: additional numbers are given - the sums of values in groups of cells. The numbers contained in the group cannot be repeated. This variant also called \"Sums Sudoku\", \"Sums Number Place\", \" Samunamupure \", \"Kikagaku Nampure\".\u003cbr\u003e","brand":"Independently Published","offers":[{"title":"Default Title","offer_id":50512336650514,"sku":"9798742696278","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_f80914cd-8d30-4d63-94bf-20c0b542653d.jpg?v=1730951963","url":"https:\/\/surprise-castle.myshopify.com\/products\/killer-sudoku-puzzle-book-for-adults-400-hard-to-very-hard-puzzles-9x9-volume1-9798742696278","provider":"Surprise Castle","version":"1.0","type":"link"}