Author: Martin
Date: 08:51:20 03/02/00
Go up one level in this thread
On March 01, 2000 at 14:55:09, Howard Exner wrote: [snip] >> >>>Crafty with modified extensions gives the following lines: >>> >>> 21-> 7:01 1.67 1. ... Kf5 2. c4 dxc4 3. d5 Bf1 4. >>> Kh2 Be2 5. d6 Ke6 6. f4 Bg4 7. Be5 >>> c3 8. Bxc3 Kxd6 9. Kg3 Kd5 10. Ba1 >>> Bf5 11. Kh2 Ke4 >>> 22 11:53 ++ 1. ... Kf5!! >>> 22 18:48 2.50 1. ... Kf5 2. c4 dxc4 3. d5 Bh1 4. >>> d6 Ke6 5. Kxh3 Bxf3 6. Bh8 Kxd6 7. >>> Kg3 Be2 8. Kf4 Kd5 9. Bc3 Bd3 <HT> >>> 22-> 20:38 2.50 1. ... Kf5 2. c4 dxc4 3. d5 Bh1 4. >>> d6 Ke6 5. Kxh3 Bxf3 6. Bh8 Kxd6 7. >>> Kg3 Be2 8. Kf4 Kd5 9. Bc3 Bd3 <HT> > > >The move 4. Bh8 might give black more troubles instesd of d6. If black now tries >h2 then Kxh2 >looks like it holds on with Martin's theme of getting the black king back to the >queenside just in time. > Hello Howard! The line given by Crafty is not the best (3...Bh1? Keeping the h-pawn protected as long as possible is most sensible). But you're right, even in "my" main variation I've been not analysing it consequently enough: 1... Kf5 2.c4 dxc 3.d5 Bf1 4.Bc3 (or 4.Bh8; on c3 it's purpose is to keep the b4 square under control). [D]8/8/8/3P1k2/2p5/2B2PKp/p7/5b2 b - - 0 4 So far white's moves seem to be forced. The king on f5 is better than on g6 and the bishop on f1 still protects h3 without being attacked by the wK. At the moment white cannot do anything (he can play Bc3-h8-c3 or something; it's important to prevent that the bK goes to f4-e3). What are white's possibilities? 1) h3-h2 (forcing white to give up the protection of f4), 2) moving the bishop away (in order to prevent that white gains a tempo while attacking the Bf1 - which he of course can only do after the h-pawn has disappeared), 3) trying to attack the d-pawn (via g6-f7...) The first one is bad: 4...h2 5.Kxh2 and now 5...Kf4 is not possible due to the attack on the bishop 6.Kg1 (and then Kf2). Moving the bishop away first loses an important tempo (again: white can lose the f-pawn if he get's to the queenside early enough). The second one I thought would be sufficient but now I'm not sure anymore: 4...Be2 5.d6! (Till now I only considered the worse 5.Kxh3? which opens the path f4-e3 for the white king: 5...Kf4 6.Kg2 Ke3 and so on) 5...Ke6 (This is the idea: to throw the dangerous bK back in order to get time... I already mentioned it in an earlier post but was not consequent enough) 6.Kxh3 (of course not 6.f4? Kxd6 7.Kxh3 Kd5 8.Kg2 Ke4 9.Kf2 Kd3-+ In this variation the f-pawn better protects the e4-square) 6...Kxd6 7.Kg3 Kc5 8.Lc3 Kb5 9.Kf2 Ld3 10.Ke3 Ka4 11.Kd2= Sad. ;) Now I will check the third possibility at home (I'm here at work and cannot analyse it too carefully...). If anyone is interested I'll post it here tomorrow... :) Martin
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