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Still Needs References? edit
Can we retire the "needs references"? The source is obviously Nikoli. It would be like citing the New York Times in the Crossword Puzzle article. brain 16:31, 23 March 2007 (UTC)
Inventor edit
Some IP address just entered a claim that it was invented by someone named Keisuku something and linked to a website in Japanese. The idea that some living person is taking credit for it is silly, as this kind of puzzle has been around for a zillion years already. I think it was just a tricky attempt at spam. DreamGuy (talk) 23:48, 1 May 2009 (UTC)