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Very Hot Topic (More than 25 Replies) C18: winawer poisoned pawn books (Read 90669 times)
ReneDescartes
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Re: winawer poisoned pawn books
Reply #35 - 07/20/10 at 18:56:04
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Well, Mr. Tait is to be commended for posting his analysis, but not for his bluster (the "corollary") at the beginning of this thread. The reaction when you and others called his bluff sets my mind at ease about any hidden busts.

Unfortunately 16 ...f6 has scored an abysmal 18% from 11 games in my database.  The problem seems to be

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 dxc3 12.Qd3 d4 13.Rb1 Bd7 14.h4 Nf5 15.h5 0-0-0 16.Rg1 f6 17.g4 Nh6 18.exf6 Rxg4 19.Rxg4 Nxg4 and now 20.f7 and 20.Qg6 with the idea of f7 have scored well for White. Though I don't see that it has been played, if White has the nerve to do it he could make things even sharper with 20.Nxd5 Nxd5 21.Qxd5 and with a7 hanging it doesn't look that easy to me for Black to exploit the opening of the center.
  
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Re: winawer poisoned pawn books
Reply #34 - 07/20/10 at 17:23:38
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Fascinating, thanks!  After 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 dxc3 12.Qd3 d4 13.Rb1 Bd7 14.h4 Nf5 15.h5 0-0-0 16.Rg1 Be8 17.g4 Qe7!? 18.g5 Qc7!? 19.Bg2 f6, White also has 20.g6 fxe5 21.Be4 (or perhaps some other move) with a chaotic situation.  I'm not sure, but I think I might rather be White then, whose pawns look so formidable.

In the mean time I can't see why 16...f6 isn't satisfactory for Black, handicapped as I am by not having access to reams of private analysis.   These perhaps are settled questions, but I'll be hanged if I know where to go to find the answers.
  

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Re: winawer poisoned pawn books
Reply #33 - 07/20/10 at 17:05:38
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up to now the following move hasn´t been mentioned

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 dxc3 12.Qd3 d4 13.Rb1 Bd7 14.h4 Nf5 15.h5 0-0-0 16.Rg1 Be8 17.g4 Qe7!?

In my database I found two games with Qe7

Matei(2585)-Dorner(2377) ICCF 2008:
18.g5 Qc5 19.Rb5 Qf8 20.Bh3 a6 21 Rb1 Qc5 22.Bxf5 exf5 23.Qxf5 Bd7 24.Qe4 Be6 25.h6 Bd5 26.Qf5 Be6 27.Qe4 Ba2 1/2

Necula (2341)-Dorner (2372) ICCF 2009:
18.g5 Qc5 19.Bg2 a6 20.Kf2 Rh8 21.h6 Na5 22.Be4 Bb5 23.Rxb5 axb5 24.Bxf5 exf5 25.Qxf5 Kb8 26.Qd3 Nc4 27.Ng3 Qc6 28.Ne4 Qe6 29.Rf1 Nb2 30.Qf3 Nc4 31.f4 Qc8 32.Nd6 Qd7 33.Nxc4 bxc4 34.g6 fxg6 35.e6 Qe7 36.fxg6 Ka7 37.Qh5 Qxe6 38.Qa5+  Qa6
39.Qxa6+ Kxa6 40.g7 Rh7 41.Rd1 1-0

First I wondered what happened after 18.gxf5:
18.gxf5 Rxg1 19.Nxg1 Qh4+ 20.Kd1 f6! =

So 18.g5 is best;I think black has a good alternative  to 18...Qc5: 18...Qc7!? 19.Bg2 f6!?

A) 20.gxf6 Bxh5 21.Qc4 Bxe2 22.Kxe2(22.Dxe6 Kb8 23.f7 Rxg2 24.Rxg2 d3 25.Qxf5 d2 26.Bxd2 cxd2+ 27.Kf2 Ne7) d3+ 23.cxd3 Rxg2 24.Rxg2 Qh7=

B) 20.Bxc6 Bxc6! 21.exf6 Qf7 22.h6 (22.Qc4 Rge8 23.Rh1 Nd6=;22.Qh3 Rd7 23.h6 Rgd8 24.g6 Qxf6 25.g7 Nxg7=) Qh5 23.Rb4 Qh4+ 24.Kd1 Qf2=

C) 20.exf6 Bxh5

C1) 21.Rh1 Bg6 22.Be4 Th8 23.Rxh8 Rxh8 24.Qc4 (24.Kf1 Qh7 25.Qc4 Ne3+;24.Rb5 Qh7 25.Qc4 Kd8) Qd7 25.Kf2 Ne3+ 26.Bxc6 ( 26.Bxe3 Bxe4 27.Bxd4 e5) Rh2+ 27.Kg1 Rh1 28.Bxh1 Nxc4 29.Rxb7
(29.Bxb7 Kd8 30.Bf3 Qd6 31.Rb4 Nd2;29.f5 d3 30.Bxb7 Kd8 21.cxd3 Qxd3;29.f5 d3 30.cxd3 Qxd3 31.fxg6 Nd2)Qa4 30.Rb4 Qxc2 31.Rxc4 Kb8 32.Rb4+ (32.Bf3 d3 33.Rb4+ Kc7) Kc7=

C2) 21.Be4 Bg6 22.a4 (22.Ng3 Qd7 23.Kf2 Rh8 24.Nxf5 exf5 25.Bg2 Rde8 26.Kg3 Qh7 27.Rh1 Qxh1 28.Bxh1 Rxh1 29.Qb5 Reh8 30.Qxb7 Kd8 31.Qxc6 R8h3+ 32.Kf2 R3h2+ 33.Qg2 Bf7=) Rh8 23.Qc4 Rd6 24.Ba3 Rd5 25.Bxd5 exd5 26.Qxd5 Qh7 27.Qb3 Nd8 28.Be7 Ne3 29.Bxd8 Qh4 30.Rg3 Qh1 31.Ng1 Rh2=

C3) 21.Qc4 Nd6 22.Qa4 Nf5 23.Be4 (23.Bxc6 Qxc6 24.Qxc6 bxc6 25.a4 Bg6 ) Bxe2 24.Kxe2 d3+ 25.Bxd3 Ncd4+ 26.Kf1 Qh7 27.Qc4+ Kb8 28.Be4 Ng3+ 29.Rxg3 Qxe4=

18...Qc7!? 19.Bh3 Nce7 ( Niessen-Smithers IECG 1997 1/2 )

18... Qc7!? 19.Qc4 a6 20.Bg2 (20.a4 a5) b5 21.Qc5 Na5 22.Qxc7 Kxc7 unclear
  
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Re: winawer poisoned pawn books
Reply #32 - 07/17/10 at 19:06:08
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Jonathan Tait wrote on 07/17/10 at 15:05:06:
.

Friendly and constructive? Okay, so maybe it wasn't, but your own posts hardly prompt friendly replies. The whole "Killer Line" post was needlessly sarcastic. And here you are at it again.


I'm completely mystified by this.  I can't see what in my post would fail to engender a normal chess-related, let us leave aside friendly, reply. Sarcastic about what?  I'm just trying to talk chess, with particular emphasis on understanding the value of the "Tait Variation" and the viability of the Poisoned Pawn.

I want to talk about the theory of this variation.  It's interesting that you have purported answers to my questions in your notes, and I would be most happy to know what they are.  Does this line challenge the Poisoned Pawn?  Is the Poisoned Pawn being upheld at high levels?  These questions interest me, and since they were raised by you, I would have hoped to be able to have a discussion on these subjects. 

If you don't like me, fine, but maybe we could actually talk some chess?  If you want to keep your private analyses under wraps, just say so; I could well understand that.
  

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Re: winawer poisoned pawn books
Reply #31 - 07/17/10 at 18:08:09
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Fllg wrote on 07/15/10 at 18:12:46:
Paddy wrote on 07/06/10 at 23:45:58:
I assume Bibs was referring to the line 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Qg4 f5 8. Qg3 cxd4 9. cxd4 Ne7 and now instead of the old 10.Bd2 etc White plays 10. Ne2 O-O 11. c3, e.g. 11...b6 12. Nf4 Qd7 13. a4 Ba6 14. Bb5! and Black's game is difficult. He probably has to change plan and play 11...Nc6, or Moskalenko's 8...Nc6. The Qc7 line has not been seen much in recent years, probably owing to this line and to the fact that even the old main lines of the Qc7 system are not exactly a bed of roses for Black.

If you are a subscriber to the French section of Chess Publishing, the quoted line, analysed by Neil McDonald, should be available to you in the archives.

If you have improvements, please post them here, since I am sure that there are many Winawer fans who would like to see the Qc7 line become a viable option once more!


I have already stated elsewhere in this forum that I had this in a game with White in 2005 which continued after 14.Bb5 Nec6 15.h4 Bxb5 16.axb5 Na5 17.h5 and now instead of 17... Nb3? analysed by Khalifman my opponent played the far superior 17... Qf7! and White seems to have no advantage. This has also been played by german GM Arik Braun vs. Zude in 2009 where Black won. I haven´t found anything really promising for White so as far as I can say Black is in good shape after 6... Qc7.


Thank you for this. I had actually noticed Zude-Braun, but since I (and my engines) still preferred White after 17...Qf7 I paid it little attention. I agree that it is a useful improvement from the black point of view - so many thanks!  Smiley

However, it does not seem to change the fundamentals of the position, with White having the safer king, more space, dark-square weaknesses to exploit, a weak black pawn at e6 and a potentially game-winning unopposed bishop. So White still looks better to me, and I  suggest that he also has more more ideas to work with; I think White should castle quickly to connect the rooks, rather than mess around with Rh3 ideas; it is probably better to postpone h5-h6 and keep it hanging over Black's head; White's queen can be a nuisance on g5; White's rooks can double on the a-file in some lines; the Ba3 may go to b4, to guard c3 and allow the rooks to press on the a-file, or to d6; if the bishop is threatened on d6, White is often just able to leave it there, since ...Nxd6 exd6 opens up new possibilities for White's pieces.

Black's possible a7-a6 break is double edged, but otherwise there seems little possibility of activity, since it is quite easy for White to stem any pressure on the c-file.

These are the impressions of an experienced 2140 player after investigating the position after 17...Qf7 with the help of various strong engines for a couple of hours; much as I would like the Qc7 line to be restored to full health, I have to say that even after this valuable improvement I would still rather be White.

I also note that so far in 2010 there has not exactly been a rush of GMs trying to repeat Braun's success - which is not firm evidence, of course, but is perhaps worth bearing in mind.
  
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Re: winawer poisoned pawn books
Reply #30 - 07/17/10 at 15:05:06
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Markovich wrote on 07/17/10 at 13:26:15:
I was using "Killer Line" to refer to the "Tait Variation."  I apologize for the unintended confusion resulting from the hyperbole, but am I mistaken that you do indeed uphold this line as killing the Poisoned Pawn?   You seem to.


Not really. I called my article "A Bust to the 7...Qc7 Winawer" in a nod towards Fischer's King's Gambit piece, and because my record with 16 Rg1 was so enormous that it equated to a bust in practical terms for me, if not necessarily a theoretical bust (busts are never so straightforward in such complicated positions; also, the analysis in that article was done without computer assistance, so there's quite a few mistakes in it). All the same, I'm naturally going to try to defend it from the White side if possible.

Markovich wrote on 07/17/10 at 13:26:15:
Should I be familiar with analysis that you and unnamed others worked out ten years ago?  In what readily available source am I expected to discover this?  But it hardly seems constructive, or friendly even, to say "Yes, yes, I have already looked at all that long ago," rather than simply to share the relevant chess ideas.  What are we discussing here if not the specifics of some chess positions?


Friendly and constructive? Okay, so maybe it wasn't, but your own posts hardly prompt friendly replies. The whole "Killer Line" post was needlessly sarcastic. And here you are at it again.

As for 24...Rxg5 (etc) in Simmelink-Oomen. No, there's no way you could be familiar with analysis we ("we" being me and various chessfriends) did ten years or so ago. Then again, what else could you expect? Obviously we analysed this since Fritz throws it out in a few seconds, doesn't it. But before sharing anything beyond the cursory reference to other 24th moves (and 22...Qxc3), as I said, I'd need to go back and look at it all again.
  

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Re: winawer poisoned pawn books
Reply #29 - 07/17/10 at 13:26:15
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I was using "Killer Line" to refer to the "Tait Variation."  I apologize for the unintended confusion resulting from the hyperbole, but am I mistaken that you do indeed uphold this line as killing the Poisoned Pawn?   You seem to.

Should I be familiar with analysis that you and unnamed others worked out ten years ago?  In what readily available source am I expected to discover this?  But it hardly seems constructive, or friendly even, to say "Yes, yes, I have already looked at all that long ago," rather than simply to share the relevant chess ideas.  What are we discussing here if not the specifics of some chess positions?
  

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Re: winawer poisoned pawn books
Reply #28 - 07/17/10 at 07:48:53
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Markovich wrote on 07/16/10 at 18:58:57:
Well I am experiencing cognitive dissonance at this point, since Watson has been saying that the Winawer Poison Pawn has been showing up more frequently these days at high levels.  I have sixteen 2009 games in my data base where the position after 12...dxc3 showed up and both players were 2400+ (that compares to seventeen analogous occurrences of the Winawer with 6...Qa5, eighteen of the Classical after 6...Qxe7 and twenty of the MacCutcheon after 5...h6). Poison Pawn Blacks included Grishuk, Ivanchuk, Shulman, Stellwagen and Vitiugov.  Further strangely, the Killer Line shows up in none of these sixteen games.

So either all these 2400+ Whites are ignorant of the Killer Line, or they know something we don't know.  Which it is, I have no idea.

Maybe if Watson sees this discussion he'll take up the Killer Line in an update.  That sure would be nice.


"Killer Line"? Which line are you talking about? Huh

Markovich wrote on 07/16/10 at 18:58:57:
@JT:  It seems to me that 20...d3, as played in Simmelink-Oomen, Corr 1998(!) is better than 20...Bf5 as played by Botterill against you.  The cited game continued 21.Nxc3 Nd4 22.cxd3 Nf3+ 23.Kf2 Nxg1 24.Be3, when Black missed 24...Rxg5!! after which he would have been fine.  24.Be3 may not be best, and White also has alternatives to 21.Nxc3, but in brief investigations, haven't been able to find anything convincing for White.


Yes, we looked at all that 10 years or so ago (including 24...Rxg5). I can't remember what the conclusion was now, I'd have to go back and look at it again. But yes, there are other moves than 24 Be3. And for Black 22...Qxc3 is interesting as well.
  

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Re: winawer poisoned pawn books
Reply #27 - 07/16/10 at 23:54:41
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Re: winawer poisoned pawn books
Reply #26 - 07/16/10 at 22:27:02
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Fllg wrote on 07/15/10 at 18:12:46:
Paddy wrote on 07/06/10 at 23:45:58:
I assume Bibs was referring to the line 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Qg4 f5 8. Qg3 cxd4 9. cxd4 Ne7 and now instead of the old 10.Bd2 etc White plays 10. Ne2 O-O 11. c3, e.g. 11...b6 12. Nf4 Qd7 13. a4 Ba6 14. Bb5! and Black's game is difficult. He probably has to change plan and play 11...Nc6, or Moskalenko's 8...Nc6. The Qc7 line has not been seen much in recent years, probably owing to this line and to the fact that even the old main lines of the Qc7 system are not exactly a bed of roses for Black.

If you are a subscriber to the French section of Chess Publishing, the quoted line, analysed by Neil McDonald, should be available to you in the archives.

If you have improvements, please post them here, since I am sure that there are many Winawer fans who would like to see the Qc7 line become a viable option once more!


I have already stated elsewhere in this forum that I had this in a game with White in 2005 which continued after 14.Bb5 Nec6 15.h4 Bxb5 16.axb5 Na5 17.h5 and now instead of 17... Nb3? analysed by Khalifman my opponent played the far superior 17... Qf7! and White seems to have no advantage. This has also been played by german GM Arik Braun vs. Zude in 2009 where Black won. I haven´t found anything really promising for White so as far as I can say Black is in good shape after 6... Qc7.


That 17...Qf7 looks good. The game basically equalizes in a full-board blockade where neither side can do anything.
  

2288 USCF, 2186 FIDE.

FIDE based on just 27 games.
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Re: winawer poisoned pawn books
Reply #25 - 07/16/10 at 18:58:57
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Well I am experiencing cognitive dissonance at this point, since Watson has been saying that the Winawer Poison Pawn has been showing up more frequently these days at high levels.  I have sixteen 2009 games in my data base where the position after 12...dxc3 showed up and both players were 2400+ (that compares to seventeen analogous occurrences of the Winawer with 6...Qa5, eighteen of the Classical after 6...Qxe7 and twenty of the MacCutcheon after 5...h6). Poison Pawn Blacks included Grishuk, Ivanchuk, Shulman, Stellwagen and Vitiugov.  Further strangely, the Killer Line shows up in none of these sixteen games. 

So either all these 2400+ Whites are ignorant of the Killer Line, or they know something we don't know.  Which it is, I have no idea.

Maybe if Watson sees this discussion he'll take up the Killer Line in an update.  That sure would be nice.

@JT:  It seems to me that 20...d3, as played in Simmelink-Oomen, Corr 1998(!) is better than 20...Bf5 as played by Botterill against you.  The cited game continued 21.Nxc3 Nd4 22.cxd3 Nf3+ 23.Kf2 Nxg1 24.Be3, when Black missed 24...Rxg5!! after which he would have been fine.  24.Be3 may not be best, and White also has alternatives to 21.Nxc3, but in brief investigations, haven't been able to find anything convincing for White.
« Last Edit: 07/16/10 at 20:53:46 by Markovich »  

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Re: winawer poisoned pawn books
Reply #24 - 07/16/10 at 10:39:50
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Papageno wrote on 07/15/10 at 16:01:32:
@Jonathan Tait
Thanks for this upload. The article is very interesting as I was not aware of this white setup at all. (Maybe not entirely my fault as this line was not yet invented and played when I studied the theory of this line with Uhlmann's book etc.) So it was a good overview for me now.

Checking some recent corr games against this, I found one with an idea not mentioned in your paper. The black player had lost a game with 18... Rxg1 in 2007, so he came up here with what seems to me to be a better try.

[Event "WCCC33PR03"]
[Site "ICCF"]
[Date "2009.04.10"]
[Round "?"]
[White "Shishkov, Pavel Aleksandrovic"]
[Black "Willigen, Jan Willem van"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "2291"]
[BlackElo "2378"]
[EventDate "2009.??.??"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 Bd7 12. Qd3 dxc3 13. Rb1 O-O-O 14. h4 Nf5 15. h5 d4 16. Rg1 f6 17. g4 fxe5 18. gxf5 exf5 19. Rxg8 Rxg8 20. Qc4 Qd8 21. Kd1 Rg4 22. Qd5 e4 23. Nxd4 Rg1 24. Nxc6 Rxf1+ 1/2-1/2

Enjoy.


Thanks Smiley

This line dates back to the following game:

[Event "corr chW22-sf5"]
[Date "1999.??.??"]
[White "Harding, Tim"]
[Black "Arounopoulos, S."]
[Result "0-1"]
[ECO "C18"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 dxc3 12. Qd3 Bd7 13. Rb1 d4 14. h4 Nf5 15. h5 O-O-O 16. Rg1 f6 17. g4 fxe5 18. gxf5 exf5 19. Rxg8 Rxg8 20. Qc4 Qd8 21. fxe5 Qh4+ 22. Kd1 Rg4 23. e6 Be8 24. Qb5 Qf2 25. Qxb7+ Kd8 26. e7+ Nxe7 27. Qa8+ Kd7 28. Qxa7+ Ke6 29. Qa6+ Kf7 30. Bh3 Qf3 31. Qc4+ Kg7 32. Bd2 Qxh3 33. Bxc3 dxc3 34. Qxc3+ Qxc3 35. Nxc3 Rg1+ 0-1

19 Rg5 is perhaps a better try, though that's not clear either. So In a later game I reverted to 17 exf6!?.

[Event "BPCTC"]
[Date "2006.??.??"]
[White "Tait, JA."]
[Black "Botterill, George"]
[Result "1-0"]
[ECO "C18"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 Bd7 12. Qd3 dxc3 13. Rb1 O-O-O 14. h4 Nf5 15. h5 d4 16. Rg1 f6 17. exf6 e5 18. g4 Nd6 19. g5 e4 20. Qd1 Bf5 21. Nxd4 Ne8 22. Be3 Nxd4 23. Bxd4 Qxf4 24. Qc1 e3 25. Bxe3 Qh4+ 26. Bf2 Qe4+ 27. Qe3 Nxf6 28. Qxe4 Nxe4 29. Be3 Nd2 30. Rb5 Bxc2 31. Rc5+ Kb8 32. Bf4+ Ka8 33. Rxc3 Rge8+ 34. Be2 Bd1 35. Kxd1 Nf3+ 36. Rd3 Nxg1 37. g6 Nh3 38. Rxd8+ Rxd8+ 39. Bd2 Nf2+ 40. Ke1 Ne4 41. h6 Nxd2 42. g7 1-0

I think that's the last time I had this line. No one seems to play the Winawer much OTB any more. It's all 3...Nf6 nowadays.
  

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Re: winawer poisoned pawn books
Reply #23 - 07/16/10 at 10:29:52
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Markovich wrote on 07/16/10 at 00:08:24:
But Black had better in 19...Bc8, which was played in an amateur game in my database. This appears critical.


I have two games with that move. White won both; e.g.

[Event "corr BCCS vs BCCA"]
[Date "1997.??.??"]
[White "Hassell, G."]
[Black "Stewart, AM."]
[Result "1-0"]
[ECO "C18"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Qg4 Ne7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 Bd7 12. Qd3 dxc3 13. h4 Nf5 14. Rb1 d4 15. Rg1 O-O-O 16. h5 Kb8 17. g4 Nh6 18. g5 Nf5 19. Bg2 Bc8 20. Be4 Ka8 21. h6 Rh8 22. a4 Nfe7 23. Ba3 Nd5 24. Qb5 Ne3 25. Rg3 Nf5 26. Rf3 Rhe8 27. a5 a6 28. Qc4 Ne3 29. Rxe3 dxe3 30. Bc5 Rd5 31. Bxe3 Rb5 32. Rxb5 axb5 33. Qxb5 Bd7 34. a6 Rh8 35. Bb6 1-0
  

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Re: winawer poisoned pawn books
Reply #22 - 07/16/10 at 00:08:24
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Papageno wrote on 07/15/10 at 20:01:15:
@Markovich
Given the Vitiugov move order 13. Rb1 d4, what does he play next after 14. h4!? Because 14... Nf5 15. h5 O-O-O 16. Rg1 brings us back to the Tait line, mentioned in the text there too as a possible move order.


Interesting, thanks.  Vitiugov ignores that possibility.  I searched for some sort of transposition in other sections, but I couldn't find his consideration of this anywhere.  Not very impressive.

I did encounter this, however:

[Event "Cto. de Espańa Individual Absoluto"]
[Date "2009.09.28"]
[White "Vehi Bach Victor Manuel"]
[Black "Vallejo Pons Francisco"]
[Result "0-1"]
[WhiteElo "2381"]
[BlackElo "2696"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 c5 7.Qg4 cxd4 8.Qxg7 Rg8 9.Qxh7 Qc7 10.Ne2 Nbc6 11.f4 dxc3 12.Qd3 Bd7 13.h4 Nf5 14.Rb1 d4 15.h5 O-O-O 16.Rg1 Kb8 17.g4 Nh6 18.g5 Nf5 19.Bg2 Na5 20.Rb4 Nc6 21.Rb1 b6 22.Be4 Nce7 23.Kf2 Qc5 24.Ng3 Ba4 25.Kg2 Ne3+ 26.Bxe3 dxe3 27.Qa6 Bc6 28.Kh3 Rd2 29.Rbe1 Nd5 30.Kg4 Bb5 0-1

Big difference in rating.  20.Bh3!.  But Black had better in 19...Bc8, which was played in an amateur game in my data base.   This appears critical.  I notice in passing that 16...Kb8 wasn't considered by Tait in the linked material.
  

The Great Oz has spoken!
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Papageno
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Re: winawer poisoned pawn books
Reply #21 - 07/15/10 at 20:01:15
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@Markovich
Given the Vitiugov move order 13. Rb1 d4, what does he play next after 14. h4!? Because 14... Nf5 15. h5 O-O-O 16. Rg1 brings us back to the Tait line, mentioned in the text there too as a possible move order.
  
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