Author: Roy Eassa
Date: 12:20:51 10/27/02
Go up one level in this thread
On October 27, 2002 at 14:54:02, Uri Blass wrote: >On October 27, 2002 at 13:57:46, Roy Eassa wrote: > >>On October 27, 2002 at 11:46:12, Sune Fischer wrote: >> >>>On October 27, 2002 at 00:52:27, Uri Blass wrote: >>> >>>>On October 26, 2002 at 18:35:30, Yatheen Manicka wrote: >>>> >>>>>It seems to that the recently completed match in Bahrain has made things much >>>>>more difficult for Kasparov in his match v Deep Junior in December. >>>>>Deep Fritz demonstrated through trial and error how to play "anti-human" chess >>>>>vs a GM, eg.,keep queens on the board and avoid positional maneuvering. >>>> >>>>I do not believe that it is possible to >>>>keep queens on the board and avoid positional maneuvering. >>>> >>>>Kramnik demonstrated mistakes that are not typical for him. >>>> >>>>In the match against Fritz he did 2 mistakes of one ply. >>>>losing a piece and sacrificing a piece. >>> >>>Why do you call the sacrifice a 1 ply mistake? He thought about that move >>>for 45 minutes. He took a chance, he had already shown he was superior in the >>>quiet positions, I think he got bored and wanted to show he could play some >>>exciting chess, and do it better then fritz too! >>> >> >> >>I agree, it was not a 1-ply error. > >It is dependent on the definition of 1-ply error. > >The point is that I understood that based on investigation of kramnik's games at >120/40 the only case when he did something similiar was against anand. > >So one of the following: >Kramnik did one 1 ply error when in the previous 100-200 games he never did it >against humans. > >Kramnik did two 1 ply errors and in the previous 100-200 games against humans he >did only one 1 ply error. > >Uri In game 5 he made a 3-ply (not counting the move itself) error when he blundered the piece. In game 6, instead of playing a fairly obvious move that would probably win, he made a sacrifice that proved to be incorrect but cannot be considered a 1-ply mistake because the refutation is a LOT deeper than that. I understand that in the game against Anand he also made an unsound sacrifice with a refutation much deeper than 1 ply -- but perhaps in that game he was losing anyway? In any case, I guess your definition of a 1-ply mistake eludes me. I would think it would mean the move leads to irrecoverable loss of significant material (without compensation) or gets checkmated on the very next move by the opponent. A 3-ply error would mean the oppenent acquires the large advantage (material or mate) 3 ply after your error, etc.
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