Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: White's position cannot be defended

Author: Vasik Rajlich

Date: 09:33:07 11/10/04

Go up one level in this thread


On November 10, 2004 at 11:57:03, Albert Silver wrote:

>On November 10, 2004 at 10:33:26, chandler yergin wrote:
>
>>On November 10, 2004 at 06:21:19, Vasik Rajlich wrote:
>>
>>>On November 09, 2004 at 18:12:46, chandler yergin wrote:
>>>
>>>>On November 09, 2004 at 17:03:22, Anthony Cozzie wrote:
>>>>
>>>>>Completely correct. I didn't know it and must admit that I found it astonishing.
>>>>>
>>>>>                                            Albert
>>>>>
>>>>>[D]8/2p5/5p1p/5Bp1/3k4/2p2PbP/4K1P1/8 b - - 0 45
>>>>>
>>>>>[Event "URS-ch sf"]
>>>>>[Site ""]
>>>>>[Date "1973"]
>>>>>[Round ""]
>>>>>[White "Makarichev Sergey"]
>>>>>[Black "Averbakh Yuri L"]
>>>>>[Result "0-1"]
>>>>>[Eco "C44"]
>>>>>[Annotator ""]
>>>>>[Source "EXT 2001"]
>>>>>[SetUp "1"]
>>>>>[FEN "8/2p5/5p1p/5Bp1/3k4/2p2PbP/4K1P1/8 b - - 0 45"]
>>>>>
>>>>>45...Ke5 46.Bc2 Kf4 47.Bb1 Bh2 48.Kf2 Bg1+ 49.Ke2 Kg3 50.Kf1
>>>>>Bf2 51.Bc2 f5 52.Bb1 f4 53.Bg6 Be3 54.Bc2 h5 55.Bf5 c5 56.Bg6
>>>>>h4 57.Bf5 g4 58.hxg4 h3 59.gxh3 Kxf3 60.g5 Kg3 61.g6 Bd4 62.h4
>>>>>f3 63.h5 Bg7 64.Ke1 f2+ 0-1
>>>>>
>>>>>From good old Albert Silver.
>>>>>
>>>>>anthony
>>>>
>>>>You're showing me how the game went!
>>>>My contention still is: "With Best Play, Black c-a-n-n-o-t force a Win!
>>>>It's a Draw!
>>>>I defy you or any Chess Program to force a Win to mate in this position!
>>>>I have eaten Crow before.. I like it with Cream & Sugar.
>>>>I also maintain, this is a position where Analysis Modules suck!
>>>>CY
>>>
>>>Wow!
>>>
>>>The important thing to understand is that two pawns vs zero pawns with opposite
>>>colored bishops is winning if the pawns have at least two files between them.
>>>
>>>Here, black is able to make the second passed pawn on the kingside by first
>>>putting all his pawns there on dark squares - f4, g5 & h4.
>>>
>>>The bishop sacrifices are cool - but maybe not necessary.
>>>
>>>Vas
>>
>>Hi,
>>Thanks for your comments.
>>You are explaning how Black won in the game... I see that.
>>You miss my point however, i said:
>>"With Best Play, Black c-a-n-n-o-t force a Win!"
>>
>>I stand by that; the Position is a Draw!
>>The Doubled pawns on the c file can never queen.
>>Black cannot make a passed pawn on the Kingside without intrusion by his King.
>>White prevents that.
>>Forget the Game!
>>Analyze the Position; that's the point of the discussion.
>>ok?
>>CY
>
>The problem is that white has no way to prevent the Black king's intrusion.
>Averbakh's plan and tactics are plain brilliant from beginning to end. Note the
>nice tactics on 48...Bg1+! and 51...f5! and of course 57...g4!!
>
>Just for your information, I played out this plan against Shredder 7.04 on my
>Athlon 2400XP+, letting it think for at least a minute for each move (reaching
>22 plies depth on average) and had no problem winning. If you think you can
>improve on white's play we can duke it out in this thread (which will stay
>discretely at the bottom of CCC and shouldn't bother anyone) and you can see for
>yourself, as well as any other doubting Thomases. Here's the score:
>
>[Event "?"]
>[Site "?"]
>[Date "????.??.??"]
>[Round "?"]
>[White "Shredder 7.04"]
>[Black "Albert Silver"]
>[Result "*"]
>[SetUp "1"]
>[FEN "8/2p5/5p1p/5Bp1/3k4/2p2PbP/4K1P1/8 b - - 0 1"]
>[PlyCount "43"]
>
>1... Ke5 2. Bh7 Kf4 3. Be4 h5 4. Bd3 h4 5. Be4 c5 6. Kd3 Be1 7. Ke2 Bd2 8. Bd3
>Kg3 9. Kf1 Be3 10. Bc2 Bf2 11. Bd3 f5 12. Ke2 f4 13. Kf1 Be3 14. Bc2 g4 15.
>hxg4 h3 16. gxh3 Kxf3 17. Bd1+ Kg3 18. h4 Bd4 19. h5 Bf6 20. h6 f3 21. Bb3 Kxg4
>22. Ke1 Bd4 *
>
>You can challenge me to the position after 1...Ke5 if you like,
>
>[D]8/2p5/5p1p/4kBp1/8/2p2PbP/4K1P1/8 w - - 0 2
>
>and feel free to use all the engines you like. This is only to say I think the
>plan is clear and there is nothing to do to stop it.
>
>                                              Albert

The one thing white can try is to play g2-g4 and give up the h-pawn.

For example, 1. .. Ke5 2. Bc2 Kf4 3. Bg6 Bh2 4. g4.

I agree that Averbakh's plan is quite amazing - it involves black putting every
pawn on a dark square.

Vas



This page took 0.01 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.