<p/><br></br><p><b> About the Book </b></p></br></br>With every puzzle requiring upper-level strategies, this collection packs even more of a punch than <i>Beyond Black Belt Sudoku</i>. You'll encounter common advanced techniques with curious-sounding names like Sashimi X-Wing, Swordfish, and Gordonian Polygon, as well as some tricky new things, including Grouped X-Cycle and 3D Medusa. The puzzles grow increasingly difficult as the book goes along, from "pretty darn hard" to "excruciating."<p/><br></br><p><b> Book Synopsis </b></p></br></br><b>Go way beyond difficult, with the hardest, most brain-busting sudoku you've ever seen!</b> <p/> 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?<p/><br></br><p><b> About the Author </b></p></br></br>Frank 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 <i>Hip Pocket Sudoku</i>, <i>Master Ninja Sudoku</i>, <i>Sudoku to Exercise Your Mind</i>, and <i>Beyond Black Belt Sudoku</i>, as well as many crossword books. His books have combined sales of more than five million copies.
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