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Very Hot Topic (More than 25 Replies) The Tarrasch in Black and White (Read 50853 times)
Ametanoitos
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Re: The Tarrasch in Black and White
Reply #192 - 05/06/10 at 18:45:54
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Markovich wrote on 05/06/10 at 13:58:28:
That's so simple and seemingly strong that I think I'll put it in my repertoire.


You mean from White's side? This was my thought also!
  
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Re: The Tarrasch in Black and White
Reply #191 - 05/06/10 at 14:49:28
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Ametanoitos wrote on 05/06/10 at 09:38:47:
After looking back in this discussion i discovered that we didn't conlude about a good weapon for Black against 6.dxc5! which is undeservely much rarer than 5.dxc5. The only problem i see is 6...d4 7.Na4! (7.Ne4 Qd5!) Bxc5 8.Nxc5 Qa5+ 9.Bd2!
(9.Qd2 is nothing for White)
9...Qxc5 10.Rc1! (Rizzitano) Qb6 11.e3!
I analyse now in my book the risky 11...dxe3 12.Bxe3 Qxb2 13.Bc4! (13.Bd3 is not so strong) Nge7!? 14.Ng5 O-O 15.Qh5 Bf5 16.Bxf7 Kh8 17.O-O Qf6 but i'm not so sure that this is completely adequate even thought till now i haven't discovered something for White. Has anyone any good idea on this?




Can U post exact line?
  

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Markovich
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Re: The Tarrasch in Black and White
Reply #190 - 05/06/10 at 13:58:28
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That's so simple and seemingly strong that I think I'll put it in my repertoire.
  

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Ametanoitos
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Re: The Tarrasch in Black and White
Reply #189 - 05/06/10 at 09:38:47
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After looking back in this discussion i discovered that we didn't conlude about a good weapon for Black against 6.dxc5! which is undeservely much rarer than 5.dxc5. The only problem i see is 6...d4 7.Na4! (7.Ne4 Qd5!) Bxc5 8.Nxc5 Qa5+ 9.Bd2!
(9.Qd2 is nothing for White)
9...Qxc5 10.Rc1! (Rizzitano) Qb6 11.e3!
I analyse now in my book the risky 11...dxe3 12.Bxe3 Qxb2 13.Bc4! (13.Bd3 is not so strong) Nge7!? 14.Ng5 O-O 15.Qh5 Bf5 16.Bxf7 Kh8 17.O-O Qf6 but i'm not so sure that this is completely adequate even thought till now i haven't discovered something for White. Has anyone any good idea on this?
  
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Ametanoitos
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Re: The Tarrasch in Black and White
Reply #188 - 04/19/10 at 22:47:32
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Yes, my move is h4. I agree with you about the propably drawn ending with practical chances. My main goal was not to prove anything for White. To do that i'd need many hours of analysis in a position that doesn't interest me. My main goal is to make my point that it is a lot easier for Black to choose the ...h6 variation instead of the ...Qa5 because it is a lot easier to memorise and play and in the end it may be the best theoritical coninuation! 

As for the book now, i haven't decided if i will mention aur game. I haven't analysed the other possibilities White had. Maybe i'll stop at 22.Re1!? or 22.Qxd4 with White being slightly better. I think that this is fair because += means a position that it is still drawn with best play. I still think that the best part of the book is the d4-pawn games and the Reti systems. The notes and the analysis i have been making so many years and the ideas i had discovered finally will see the light! I hope Marin will not refute my Reti ideas!
  
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Smyslov_Fan
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Re: The Tarrasch in Black and White
Reply #187 - 04/19/10 at 20:15:41
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I'm really honored to think I may be helping you with your book, Amet.  

If you were to put the diagram after Black's Rxb3 in the book, I wonder how many people would believe you if you said a) "and the game is even", and how many would believe you if you said that "White has winning chances".

I have the feeling that most readers will believe whatever the author says about this position, especially if you provide a sample line showing a draw or a win.
  
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Smyslov_Fan
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Re: The Tarrasch in Black and White
Reply #186 - 04/19/10 at 19:56:21
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After 33.Ra7 as opposed to 33.b4, at least you get to keep the two rooks on.  Here's a basic flaw with the engines: you put in the 3 vs 2 ending with one Rook, and the engine will prefer that to an even endgame despite us agreeing that it's drawn.  

From what I can see, you have two ways of showing an advantage: a) show that 3 vs 2 with double rooks can win in some cases and b) force a winning 3 vs 2 ending with single rooks.

If you can't do that, I think the best you can say for white is that he has practical chances.  But I think the most accurate statement will end up being that White has easier play in a drawn endgame.

33....Rxb3

Was your conditional move 34.h4 then?
  
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Ametanoitos
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Re: The Tarrasch in Black and White
Reply #185 - 04/19/10 at 19:41:26
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My PC now suggests 33.Rxa7 and i like my chances after that. My Rook is excellent at the 7nth rank and after 33...Rxb3 34.h4 i have better chances in the double Rook ending than the similar with one Rook each. I don't know if i can win after 33...f4 but as you, i don't have much time to analyse this till the end.
  
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Smyslov_Fan
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Re: The Tarrasch in Black and White
Reply #184 - 04/19/10 at 13:20:49
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Thank you for your patience.  April is a busy time for me.  The summer should be easier if we continue this discussion that long.

Although Fritz recommends 32....Ra8, I find that a bit passive.  I'm going to play 32...Rb5 and reach the following position:

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*
  
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Smyslov_Fan
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Re: The Tarrasch in Black and White
Reply #183 - 04/15/10 at 02:13:40
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Amet, you're exactly right about how I was going to defend. I had planned to place my remaining rook on the 4th/3rd rank (depending on where your king and pawns end up, then shuffle back and forth until I needed a timely h7-h6.  Such passive defense seems impossible to break down without Black's collusion.
  
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Ametanoitos
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Re: The Tarrasch in Black and White
Reply #182 - 04/14/10 at 22:49:45
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Forget it. We discovered the draw. And maybe your defensive plan is simpler. Passive defense should suffice. But still, i don't consider this king of endgame a success for Black. And in our game with Smyslov_fan i think i have ways to press for something more and avoid this 3 vs 2 scenario.
  
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Re: The Tarrasch in Black and White
Reply #181 - 04/14/10 at 16:43:29
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My books apparently ignore this ending too, except for the comment by Fine that White needs to have an e-pawn to have any winning chances.  Offhand I would think that the sort of ending with f-pawn vs. g+h pawns, which could arise from your scenario with Black playing ...h5, should be drawn indeed.  In the other case, I don't follow your comments about how "after g4!+f3+h4-h5 Black can only sacrifice his f pawn with f5 ...".  I immediately imagine a position with, say, Black's king on f7, pawns on f6 and h6, and rook on the second rank, when White taking his king to f5 is met by a check along the rank anytime White's rook isn't on it.
  
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Ametanoitos
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Re: The Tarrasch in Black and White
Reply #180 - 04/14/10 at 12:23:27
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kylemeister wrote on 04/13/10 at 14:32:02:
I don't believe that "the endgame with e+f+g pawns against f+h pawns is a win as showed by Capablanca."
As far as I know it is drawn in the most general case; see e.g. the BCEs (Basic and Batsford).  You seem to be arguing that it is better for White to have an h-pawn than an e-pawn, which seems to be the opposite of established theory.


No, don't get me wrong. I just say that having the h pawn instead of the e pawn does have some advantages (penetration at g6) and not only disadvantages (not a potentially passed pawn). The problem with email chess is that you don't feel the danger as you could do in OTB play. I don't consider anymore a theoritical success for Black to get these king of endings. No winning chances and many losing chances even if the defending side demonstrate a good technique. 

In Dvoretsky's endgme manual, Grivas' endgame books and Keres' old endgame book i don't see a referense to this particular ending. Maybe you can see in your sources and provide me with the right defensive plan for Black i have asked to be completely persuaded that this is drawn. I believe that this is drawn somehow but i don't know yet how!
  
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Smyslov_Fan
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Re: The Tarrasch in Black and White
Reply #179 - 04/13/10 at 22:01:02
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I'm rather eager to discuss the specific endgame, but I may need to wait a couple of days. (Work is piling up).   

Since this is obviously interesting several people, when we reach the endgame we could adjourn to the General chess section (or perhaps the endgame section)?
  
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Re: The Tarrasch in Black and White
Reply #178 - 04/13/10 at 14:32:02
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I don't believe that "the endgame with e+f+g pawns against f+h pawns is a win as showed by Capablanca."
As far as I know it is drawn in the most general case; see e.g. the BCEs (Basic and Batsford).  You seem to be arguing that it is better for White to have an h-pawn than an e-pawn, which seems to be the opposite of established theory.
  
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