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Kramnik Leads Computer 3 To 2 In Chess Match

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    NHNE News List Current Members: 720 Subscribe/unsubscribe/archive info at the bottom of this message. ... DEEP FRITZ FIGHTS BACK IN CHESS CHALLENGE By Will
    Message 1 of 1 , Oct 15, 2002
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      DEEP FRITZ FIGHTS BACK IN CHESS CHALLENGE
      By Will Knight
      New Scientist
      October 14, 2002

      http://www.newscientist.com/news/news.jsp?id=ns99992918
       
      The computer program Deep Fritz fought back to inflict defeat on world chess
      champion Vladimir Kramnik on Sunday in game five of a million-dollar contest
      between man and machine.

      The world champion still leads by three points to two in the eight game
      series, having previously won two and drawn two. Deep Fritz took the latest
      game after Kramnik mistakenly made a move that he had previously ruled out
      as flawed.

      At a press conference, Kramnik admitted: "Such things can happen -- humans
      blunder sometimes. Computers remember everything, so it is difficult to
      prepare. Maybe I'm slightly more tired."

      Deep Fritz may gain further advantage as the gruelling contest continues.
      Most games have taken more than five hours and Kramnik is likely to become
      ever more fatigued.

      Tactical swap

      In previous games, Kramnik has deliberately tried to reduce the sheer
      number-crunching advantage of his computer opponent by exchanging queens
      early in the game. Removing the two most powerful pieces from the board
      reduces the potential for complexity in each game.

      But in game five, Kramnik chose not to swap queens, which some observers
      believe turned Deep Fritz into a much more powerful opponent.

      The match comes five years after IBM computer Deep Blue defeated then world
      champion Gary Kasparov by 3.5 points to 2.5. Unlike Kasparov, Kramnik was
      able to practise against his computerised opponent, to simulate the studying
      of a human opponent's previous games.

      The team behind Deep Fritz is also forbidden from reprogramming its player
      for each new game. They are only allowed to vary the openings selected by
      Deep Fritz.

      Million moves

      Deep Fritz runs on more modest hardware than IBM's Deep Blue but is still
      rated as a better chess-playing machine.

      Deep Blue was constructed from specially designed computer chips and can
      consider 200 million moves a second. Deep Fritz uses eight Pentium desktop
      chips and can work through a more modest three million moves a second. But
      its programmers say more intelligent algorithms make better use of available
      resources. Deep Fritz demonstrated this advantage by beating Deep Blue in
      2000.

      The computer player also won the right to challenge Kramnik after defeating
      all its other computer opponents in a competition held in April 2001. The
      man versus machine match, dubbed the "Brains in Bahrain", will earn Kramnik
      $1 million if he wins, $600,000 if he loses and $800,000 if the result is a
      draw.

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