{"product_id":"skill-builder-sudoku-hard-to-expert-isbn-9781454958888","title":"Skill Builder Sudoku: Hard to Expert","description":"\u003cb\u003eBuild up your sudoku skills from easy to expert!\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e In this three-book series, each book helps solvers build their skills to get from one level to the next. Puzzles in \u003ci\u003eHard to Expert\u003c\/i\u003e are the most challenging and will build on the skills learned in the second book, \u003ci\u003eMedium to Hard\u003c\/i\u003e. Each new technique (such as swordfish and grid coloring) is introduced gradually, giving solvers time to fully master each skill as they progress to complete sudoku mastery.","brand":"Puzzlewright Press","offers":[{"title":"Default Title","offer_id":47819418337509,"sku":"NP9781454958888","price":12.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1842\/7735\/files\/a27b1a06-0c83-4975-a6e6-b27b00564a83.jpg?v=1767879925","url":"https:\/\/k12savings.com\/products\/skill-builder-sudoku-hard-to-expert-isbn-9781454958888","provider":"K12savings","version":"1.0","type":"link"}