Author: Robert Hyatt
Date: 21:49:56 10/16/02
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On October 17, 2002 at 00:18:02, martin fierz wrote: >On October 16, 2002 at 22:51:14, Robert Hyatt wrote: > >>On October 16, 2002 at 20:35:49, martin fierz wrote: >> >>>On October 16, 2002 at 18:03:10, Johan De Bock wrote: >>> >>>>Last line of the live analysis of game 6 of Kramnik-DF: >>>> >>>>Mig: Btw, if white takes the bishop on a6, then b2 is a winning shot. >>>> >>>> >>>>Isn't that funny :-) >>> >>>i'm not sure why that should be funny. i have seen no analysis which proves that >>>the position after b2 is in fact a draw. besides, it looks completely lost, >>>which is also the reason why kramnik resigned - it's quite natural to assume >>>that it is lost. >>>if it is in fact a draw, it is still very doubtful that kramnik would have been >>>able to hold the endgame as obviously a lot of precision on the white side is >>>required (unlike the famous DB-kasparov game where kasparov missed a perpetual >>>check). >>> >>>aloha >>> martin >> >>Why is the DB/Kasparov draw _easier_? It took a _bunch_ of us, working all >>night, to >>prove that Re8 led to a draw, and the line was very precise. One wrong move and >>the >>draw turned into a loss instantly... >> >>It doesn't seem that "easy_ to me... >> >>It wasn't so easy for Kasparov either. :) > >i guess i'm wrong then :-) >all i remembered was that people said "kasparov missed a perpetual". and i >thought i remembered that kasparov was disgusted that he missed it - but my >memory is of course not very reliable :-) >a perpetual is something you can calculate. in the kramnik DF potential draw, >*if* it were possible for white to force that RPP-QP drawn endgame, then it >would be "easy" in the sense that you can find it at some point, and once you >have found it it's game over again. however, if white cannot force that endgame, >then he has to defend RR-QN+passed-pawn, with great accuracy. >why is one easier than another? because once you see the perpetual, you see it >and it's a draw - and you cannot lose any more. >defending a possibly tenable but inferior position on the other hand is *never* >over. the computer will torture you for 50 or 100 moves (assuming you cannot get >into this drawn RPP-QP endgame), and any slip will lose the game. > >aloha > martin The DB perpetual was very deep. IE there were many "set-up" moves that had to be played perfectly, before the position with the perpetual was reached... Many of the moves are one-only type moves, but they are very difficult to find if you don' t know they are there, which is why it took almost 24 hours to convince everyone that this was drawn. Everytime a draw was disproven, another was found, until it finally could not be refuted... > >>> >>>>http://www.fritz7.de/bahrain/english/
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