{"product_id":"killer-sudoku-hard-to-extreme-puzzles","title":"Killer Sudoku Hard to Extreme Puzzles","description":"Here are some really difficult Sudoku puzzles that will definitely kill your boredom. Difficult puzzles work best if you are trying to change your mood and approach your problems with a renewed perspective. These puzzles are also useful in helping you find your own version of happiness. Start solving today.","brand":"Senor Sudoku","offers":[{"title":"Paperback","offer_id":46358619586796,"sku":"9781645214724","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/1791\/3068\/files\/9781645214724.jpg?v=1769631827","url":"https:\/\/intl.allstora.com\/products\/killer-sudoku-hard-to-extreme-puzzles","provider":"Allstora","version":"1.0","type":"link"}