{"product_id":"way-beyond-black-belt-sudoku-martial-arts-puzzles-9781454933571b","title":"Way Beyond Black Belt Sudoku (Martial Arts Puzzles)","description":"\u003cb\u003eGo way beyond difficult, with the hardest, most brain-busting sudoku you’ve ever seen!\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eCalling all sudoku-solving diehards: with every puzzle requiring upper-level strategies, this collection packs even more of a punch than our previous Beyond Black Belt Sudoku. 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?","brand":"Puzzle Wright Press","offers":[{"title":"Bargain","offer_id":42827160354896,"sku":"9781454933571B","price":5.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/8173\/5760\/files\/9781454933571-l.jpg?v=1785909064","url":"https:\/\/bookoutlet.com\/products\/way-beyond-black-belt-sudoku-martial-arts-puzzles-9781454933571b","provider":"Book Outlet","version":"1.0","type":"link"}