Deep Fritz, a chess-playing computer, has beaten human counterpart world chess champion Vladimir Kramnik in a six-game battle in Bonn, Germany.

Deep Fritz won by four points to two, after taking the last game in 47 moves in a match lasting almost five hours.

Of the six games, Deep Fritz won two and four ended in draws.

The 31-year-old Russian, who received $500,000 (£253,000) for playing the machine, could have walked away with double if he had been successful.

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