Garry Kasparov's final match in against a chess-playing computer has ended in a draw, with the score at three-all.
The world's number one player did well in the final game of the six game competition in New York, but surprised experts by offering a draw after 23 moves.
His opponent, Israeli-programmed Deep Junior, rejected the offer, but then offered a draw five moves later which Kasparov accepted.
Kasparov lost to another chess-playing computer, Deep Blue, in a 1997 match seen by many as an important milestone in computer development.
According to Associated Press, the grandmaster said that he would have gone for a victory against a human opponent.
But he was afraid that even a small mistake against the computer would have cost him the match.
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