Author: Darrel Briley
Date: 12:33:30 06/25/05
Go up one level in this thread
On June 25, 2005 at 14:47:32, Robin Smith wrote:
>In a previous thread some people have been repeatedly stating that choosing
>1...e5 as a human’s defense against 1.e5 is a very poor choice. They said
>practice has repeatedly shown this. I posted some games to the contrary and was
>accused of "cherry picking" (which was true enough). So I decided to go back and
>look at all the recent man-machine matches between strong humans and strong
>computers. The results were a surprise, even for me. The matches I looked at
>were:
>
>Deep Blue-Kasparov 1996, Deep Blue-Kasparov 1997, Deep Fritz-Kramnik 2002,
>Rebel-van Wely 2002, X3D Fritz-Kasparov 2003, Hiarcs-Bareev 2003 and
>Junior-Kasparov 2003
>
>I may have missed some matches, but if I did it was not my intention or cherry
>picking. I deliberately excluded Hydra-Adams, since the discussions have been
>about Adam's supposedly poor decision making process in choosing 1...e5 as his
>defense of choice, and this decision had to be made prior to the match. I also
>only looked at games where the computer played white, since that is what the
>ruckus has all been about.
>
>The results from the above matches were:
>
>1.e4 e5 white (computer) scored 50% in 5 games
>1.e4 other white (computer) scored 68% in 11 games
>not 1.e4 white (computer) scored 67% in 3 games
>
>If I were Adams, and 1...e5 was the mainstay of my opening repertior, I would
>not see anything in these statistics to change my mind. Perhaps people who have
>been vociferous about Adams "poor opening choice" may have been coloring their
>thinking based on Crafty blitz games on ICC. These are hardly the games upon
>which to make ones opening choices for a serious tournament time control match
>with money on the line.
>
>Below is a table of results for the games. Scores are from the white (computer)
>perspective.
>
> opening: 1.e4 e5 1.e4 other not 1.e4
> event score # games score # games score # games
>Deep Blue-Kasparov 1996 0 1 1.5 2 0 0
>Deep Blue-Kasparov 1997 1 1 1.5 2 0 0
>Deep Fritz-Kramnik 2002 0.5 2 0 0 1.5 2
>Rebel-van Wely 2002 0 0 2 2 0 0
>X3D Fritz-Kasparov 2003 1 1 0 0 0.5 1
>Hiarcs-Bareev 2003 0 0 1 2 0 0
>Junior-Kasparov 2003 0 0 1.5 3 0 0
> total 2.5 5 7.5 11 2 3
> score 50% 68% 67%
>
>-Robin
Perhaps there isn't anything in these statistics to make Adams deviate from his
opening repetoire, but there's plenty of reason given his results.
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