Most people know Bram Cohen as the founder of Bit Torrent. To me, he's another puzzle friend who regularly attends the International Puzzle Party every summer. And it's fast approaching!
He created this Sudoku puzzle and describes it thusly:My first attempt at making a sudoku. This one might be obnoxiously hard in a bad way.
I have not had a chance to try it. But I've always liked squiggly sudokus.