{"product_id":"skill-builder-sudoku-peter-gordon-9781454958871","title":"Skill Builder Sudoku: Medium to Hard","description":"\u003cb\u003eBuild up your sudoku skills from easy to expert!\u003c\/b\u003e \u003cp\u003e\u003c\/p\u003e In this three-book series, each book helps solvers build their skills to get from one level to the next. \u003ci\u003eMedium to Hard\u003c\/i\u003e will build on the skills learned in the first book, \u003ci\u003eEasy to Medium\u003c\/i\u003e, gradually introducing more advanced techniques (like jellyfish and finned X-wings) alongside puzzles designed to hone those skills, giving solvers plenty of opportunity to practice, and to build the confidence to continue on to the next volume.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Peter Gordon, Frank Longo\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1454958871\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781454958871\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Puzzlewright Press\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 02\/03\/2026\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 160\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback","brand":"Peter Gordon","offers":[{"title":"Paperback","offer_id":46747800633599,"sku":"9781454958871","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_540847f8-374e-4204-816a-410a582bda7d.jpg?v=1743584772","url":"https:\/\/www.whiterainbookhouse.com\/products\/skill-builder-sudoku-peter-gordon-9781454958871","provider":"WR Book House","version":"1.0","type":"link"}