{"product_id":"way-beyond-black-belt-sudoku-r","title":"Way Beyond Black Belt Sudoku(r)","description":"\u003cb\u003eGo way beyond difficult, with the hardest, most brain-busting sudoku you've ever seen \u003c\/b\u003e \u003cp\u003e\u003c\/p\u003e Calling all sudoku-solving diehards: with every puzzle requiring upper-level strategies, this collection packs even more of a punch than our previous \u003ci\u003eBeyond Black Belt Sudoku\u003c\/i\u003e. Get ready, because you'll encounter common advanced techniques with curious-sounding names like XYZ-Wing, Finned X-Wing, Sashimi X-Wing, Swordfish, Jellyfish, Gordonian Rectangle, and Gordonian Polygon. And you might find some tricky new things here, too, from Grouped X-Cycle and Simple Grid Coloring to 3D Medusa and Bi-Value Universal Grave. The sudoku generally become increasingly difficult as the book goes along, from \"pretty darn hard\" to \"excruciating.\" Are you up for the challenge?\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAbout the Author\u003c\/b\u003e\u003cbr\u003eFrank Longo is a freelance puzzle creator living in Hoboken, NJ. He has had over 2,000 puzzles published since 1993. Longo has written many books for Sterling, such as \u003ci\u003eHip Pocket Sudoku\u003c\/i\u003e, \u003ci\u003eMaster Ninja Sudoku\u003c\/i\u003e, \u003ci\u003eSudoku to Exercise Your Mind\u003c\/i\u003e, and \u003ci\u003eBeyond Black Belt Sudoku\u003c\/i\u003e, as well as many crossword books. His books have combined sales of more than five million copies.\u003cbr\u003e","brand":"Puzzlewright","offers":[{"title":"Default Title","offer_id":50707551420690,"sku":"9781454933571","price":8.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_69132f0d-9e8c-4b71-8f07-1fbbea5972c1.jpg?v=1734498029","url":"https:\/\/surprise-castle.myshopify.com\/products\/way-beyond-black-belt-sudoku-r","provider":"Surprise Castle","version":"1.0","type":"link"}