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Game over. Computer scientists at the University of Alberta have solved checkers, the popular board game with a history that dates back to 3,000 B.C.
After 18-and-a-half years and sifting through 500 billion billion (a five followed by 20 zeroes) checkers positions, Dr. Jonathan Schaeffer and colleagues have built a checkers-playing computer program that cannot be beaten. Completed in late April this year, the program, Chinook, may be played to a draw but will never be defeated.
(http://www.physorg.com/news104073048.html)
I wonder how long till chess is solved.