Author: Ingo Althofer
Date: 23:21:56 02/01/03
Go up one level in this thread
On February 01, 2003 at 20:14:09, Amir Ban wrote:
>[Event "X3D Man-Machine match"]
>[Site "New York City"]
>[Date "2003.01.30"]
>[Round "3"]
>[White "Kasparov, Garry"]
>[Black "Deep Junior 8"]
>[Result "0-1"]
>[Opening "QGD semi-Slav: Stoltz variation"]
>[ECO "D45"]
>
>1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2 b6
>7. cxd5 exd5 8. Bd3 Be7 9. Bd2 O-O 10. g4 Nxg4 11. Rg1
>11... Ndf6 12. h3 Nh6 13. e4 dxe4 14. Bxh6
>14... exd3 15. Rxg7+ Kh8 16. Qxd3 Rg8 17. Rxg8+ Nxg8 18. Bf4 f6
>19. O-O-O Bd6 20. Qe3 Bxf4 21. Qxf4 Bxh3 22. Rg1 Qb8
>23. Qe3 Qd6 24. Nh4 Be6 25. Rh1 Rd8 26. Ng6+ Kg7 27. Nf4 Bf5 28. Nce2 Ne7 29.
>Ng3 Kh8 30. Nxf5 Nxf5 31. Qe4 Qd7 32. Rh5 Nxd4
>33. Ng6+
>
>{Deep Junior suggests 33.Rh1 and it's still playable for white. Does it work ? I
>don't know, but I think Kasparov didn't consider it for even a second. It seems
>that human players are incapable of accepting the price of a mistake and
>rethinking the position objectively. The knight manouevre gets it over quickly}
I replayed this position with several chess engines, and indeed it seems that
White can give stiffer resistance with 33.Rh1.
Junior 7 sees evaluations only slightly below zero, and is to some degree
("softly") supported by Shredder 7 in his opinion. (In contrast, my Fritz6 and
also ChessTiger 14 give Black a fat 1.5 plus.) For instance, after 33.Rh1 Kg8
34.Rg1+ Kf8 Junior proposes 35.b3!?
However, positions with Queens, Rooks, and Knights (and no bishops) are
typically very difficult for humans to defend against computers. Maybe Kasparov
would have needed computer assistance to keep good drawing chances.
Ingo Althofer.
PS: I still remember a 3-Hirn game against Sofia Polgar at the AEGON tournament
in 1996. She was a sound pawn up in a rook+knight ending - but was completely
unable to win it.
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