Just over a month ago, there was an article on Digg saying that the PerplexCity cube had been found. It sounded intriguing (especially the part about winning $200, 000) so I checked it out. Apparently, there’s a puzzle site called PerplexCity which involves a series of collectible trading cards, each with a puzzle. You log in, solve the puzzles, and get clues to the location of the final artifact.
However, I’m very impressed by PerplexCity’s new Japanese Channel. Aside from having Sudoku puzzles (who doesn’t these days), it has a variety of other puzzles, some I haven’t seen before, and some that I have, including Kakuro. I haven’t seen many online implementations of Kakuro, but I think PerplexCity does a good job.
If you’re looking for a challenge, be sure to try a Ponturu puzzle. It takes me back to the good ol’ Graph Theory days of building connected bridge systems. Fun times!