Way Beyond Black Belt Sudoku (R) Av Frank Longo

<DIV><DIV><B>Go way beyond difficult, with the hardest, most brain-busting sudoku you’ve ever seen!</B><BR/>  <BR/> Calling all sudoku-solving diehards: with every puzzle requiring upper-level strategies, this collection packs even more of a punch than our previous <I>Beyond Black Belt Sudoku</I>. 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?</DIV></DIV>