Charles Seife
On 26 August, chess champion Anatoli Karpov used the World Wide Web to take on everybody in the world--and drubbed all comers. Karpov's opponents on the Web played one game collectively, with a computer in Finland tallying their votes to choose each move. Karpov isn't the only champion playing techno-chess; Garry Kasparov, his longtime rival, is gearing up for a rematch with IBM's Deep Blue, the world's most capable chess computer, which he defeated early this year.
Computers/Math