Author: Ricardo Gibert
Date: 00:11:29 11/03/00
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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 think probably Kramnik rejected it for the same superficial reasons that the Braingames commentators did. As you suggested, "he didn't know this book draw". Note, the variations are significantly different with the King on f1 rather than g1, so White should temporize with the rook rather than the King to keep things simple.
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