Author: Uri Blass
Date: 00:12:45 10/26/02
Go up one level in this thread
On October 25, 2002 at 22:36:56, Robert Hyatt wrote: >On October 25, 2002 at 18:22:29, Rolf Tueschen wrote: > >>On October 25, 2002 at 12:18:38, Robert Hyatt wrote: >> >>>On October 25, 2002 at 09:55:48, Rolf Tueschen wrote: >>> >>>>On October 24, 2002 at 17:17:19, Robert Hyatt wrote: >>>> >>>>>Here is a game where Kramnik played black, and he made the same sort of >>>>>sacrifice he made against Deep Fritz, >>>> >>>>Wrong! >>>> >>>> >>>>>but he made it against Anand, and he >>>>>got rapped for it. Crafty says this just drops a piece. I ran the position >>>>>after >>>>>Bxf2 to a pretty deep depth and the score didn't change as I even followed the >>>>>game for a move or two deeper. If you let Crafty search for a black move >>>>>there, it likes either the rook move as suggested in the annotation, or Nd8 >>>>>if you let it search longer than one second... Score after Bxf2 is +3.5, score >>>>>after Nd8 is +.5. >>>> >>>>I think we could prove very quickly why it's way too early that we could rely on >>>>the research with our actual PC programs. Also you miss the complete problem of >>>>that game. It's not at all the same or similar to the Nxf7 against Deep Fritz. >>> >>>It is similar for one main reason: It simply drops a piece for nothing. >>> >>>So in that regard, it was a sacrifice that was unsound, which could be called >>>a blunder by most any definition since it causes an equal position to turn into >>>a dead lost position. >> >>What are you talking about? The position IS already lost! So it is NOT similar >>to the Kramnik-Deep Fritz position! >> >>Rolf Tueschen >> > >I'm not sure what you are talking about. The position before the sac is not >lost for either side. I did not analyze the position but it is clear that one of the following is correct: 1)The position is not lost for either side 2)The position is lost for kramnik but Crafty does not understand it. If 2 is correct then it means that it is not similiar to the kramnik-Deep Fritz blunder and the sacrifice may be a desperate attempt of kramnik when he found that other lines are bad. Uri
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