Author: Uri Blass
Date: 06:51:56 11/03/00
Go up one level in this thread
On November 03, 2000 at 05:51:16, Ricardo Gibert wrote: >On November 03, 2000 at 04:33:10, Uri Blass wrote: > >>On November 03, 2000 at 03:11:29, Ricardo Gibert wrote: >> >>>On November 03, 2000 at 02:47:40, Sune Larsson wrote: >>> >>>>On November 02, 2000 at 20:08:57, Ricardo Gibert wrote: >>>> >>>>>[D]8/1R3p2/4pkp1/7p/7P/5PP1/r7/6K1 w - - 10 46 >>>>> >>>>>Why doesn't White play 46.f4 here? >>>> >>>> >>>> Yes, the position after 46.f4 is claimed by Kramnik's seconds, >>>> Illescas and Lautier, to be a known book draw. See Henderson report >>>> at TWIC. Instead Kramnik chose 46.Kf1 (? according to Henderson), >>>> probably because he didn't know this book draw - or got some OTB doubts. >>>> >>>> Sune >>> >>>Thanks. I suspected that this might be a known draw, so I looked for it in a >>>couple endgame books, but came up empty. I was surprised that other annotators >>>did not write about it. Actually, the commentators for the Braingames webcam did >>>mention it, but cast it aside as bad, because it "allows" Black to infiltrate >>>White's position via the White squares. Naturally, I could not convince myself >>>that their claim was accurate, hence my post. >>> >>>I think after 46.f4, they could have agreed to a draw and shaken hands. >> >>I do not think that it is so simple and I expect black to try to play it after >>46.f4 >> >>I did not anlayze the position but the fact that kramnik did not play it proves >>that it is not a simple draw(I am sure that he considered f4 because it is a >>natural move to consider). >> >>Uri > >Why guess? Analyze it and show me the variation to confirm this. I'll help get >you started with 46.f4 Kf5 47.Rxf7+ Kg4 48.Rf6 Kxg3 49.Rxg6+ Kxh4 (49...Kh3 >50.Rxe6 Ra1+ 51.Kf2 Kxh4 52.Re1=) 50.Rxe6 Kg3 51.Re1=; 48...Kh3 49.Rxg3 Rg2+ >50.Kh1 Rxg3 (50...Re2 51.Kg1 and Black has nothing better than 51...Rg2+ again; >50...Ra2 51.Rxe6 Kxg3 52.Re1=) Rxe6 51.Rf3 Re1=. It is not necessary to analyze >this so much, but I'm trying to give you plenty to work with. BTW, I'm at work, >so this is all "blindfolded" without use of a set. Hopefully, no errors crept >in. There are other lines to analyze. Kf5 is the more simple line because the sides trade pawns in the first move of black but black can try the plan 46...Ra8 with Re8 and Re7. White can stop Kf5 in this case by Re5 but black can play Kg7 and f6 and later e5 or g5. Black may also play Kf5 when the black rook is in different square. Saying that black has no chances to win only because of the fact that a book said that it is a draw is not convincing(at least it does not convince me). I am sure that I will try to play it as black because I cannot prove a draw at tournament time control. Uri
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