{"product_id":"skill-builder-sudoku-medium-to-hard","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.","brand":"Frank Longo, Peter Gordon","offers":[{"title":"Paperback","offer_id":47358714020076,"sku":"9781454958871","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/1791\/3068\/files\/9781454958871.jpg?v=1772774344","url":"https:\/\/intl.allstora.com\/products\/skill-builder-sudoku-medium-to-hard","provider":"Allstora","version":"1.0","type":"link"}