{"product_id":"skill-builder-sudoku-hard-to-expert-book-peter-gordon-9781454958888","title":"Skill Builder Sudoku: Hard to Expert","description":"\u003cp\u003e\u003cb\u003eBuild up your sudoku skills from easy to expert!\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eIn 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.\u003c\/p\u003e","brand":"WoB","offers":[{"title":"US \/ NEW \/ INGRAM","offer_id":53078034972945,"sku":"NIN9781454958888","price":12.99,"currency_code":"USD","in_stock":true},{"title":"GB \/ NEW \/ GARDNERS","offer_id":53158716244241,"sku":"NGR9781454958888","price":18.19,"currency_code":"USD","in_stock":false},{"title":"US \/ NEW \/ BOOKAZINE","offer_id":54603748507921,"sku":"NBZ9781454958888","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9781454958888.jpg?v=1790941549","url":"https:\/\/www.worldofbooks.com\/products\/skill-builder-sudoku-hard-to-expert-book-peter-gordon-9781454958888","provider":"World of Books ","version":"1.0","type":"link"}