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Very Hot Topic (More than 25 Replies) Gah 5...c6, How I hate you..... (Read 23760 times)
Stefan Buecker
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Re: Gah 5...c6, How I hate you.....
Reply #36 - 05/12/09 at 17:52:00
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MNb wrote on 05/12/09 at 15:33:24:
Isn't 9...Nbd7 10.Ne5 Nxe5 11.dxe5 Qd4+ 12.Kh1 Ng4 13.Rae1 h6 better for Black? Sure, pawn f7 looks weak, but so does pawn e5. Moreover Black is ready for castling both sides.

13.Rf4 (instead of 13.Rae1) 13...Qxe5 14.Rxg4 Qxe2 15.Bxe2 Bxg4 16.Bxg4. This may be slightly better for Black. But I still believe that 9...0-0 10.Bxf6 gxf6 is more critical.  
  
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Re: Gah 5...c6, How I hate you.....
Reply #35 - 05/12/09 at 15:33:24
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Isn't 9...Nbd7 10.Ne5 Nxe5 11.dxe5 Qd4+ 12.Kh1 Ng4 13.Rae1 h6 better for Black? Sure, pawn f7 looks weak, but so does pawn e5. Moreover Black is ready for castling both sides.

Uruk wrote on 05/12/09 at 12:49:51:

I think they are still harmless.

You now have the chance to prove it.

Uruk wrote on 05/12/09 at 12:49:51:

But anyway, better analyse openings above the sea level of =

Nobody in this thread prevents you.
  

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Uruk
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Re: Gah 5...c6, How I hate you.....
Reply #34 - 05/12/09 at 12:49:51
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I think they are still harmless.

My objection to 4...c6 is 5.Ne4, closer to  =  than  =+

But anyway, better analyse openings above the sea level of =
  
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Stefan Buecker
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Re: Gah 5...c6, How I hate you.....
Reply #33 - 05/12/09 at 12:34:54
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I don't know whether 6.Bd3 is better than 6.Ne5. 
If the evaluation of 4...c6 5.Bc4 exf3 6.Nxf3 Bf5 depends from Gutman's idea and my 7.g4, while the value of 4...exf3 5.Nxf3 Bf5 depends from 6.Ne5 and 6.Bd3, it would take much work to decide which of Black's set-ups is better. And to say that 5...Bf5 is more flexible seems also a bit pointless - yes, it may avoid 7.Bc4, but it also makes two replies (Ne5, Bd3) more attractive for White which were harmless in the O'Kelly.
  
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Uruk
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Re: Gah 5...c6, How I hate you.....
Reply #32 - 05/12/09 at 11:38:00
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MNb wrote on 05/12/09 at 03:14:00:

Uruk wrote on 05/11/09 at 11:26:17:

You will see ArkheiN, SWJedi and you yourself (!)
agree that 5...Bf5 is at least =+ and that Ne5 is nothing.

My enthusiasm about that line waned when ArkHein reminded me of the Schoupal-Bonsai game. Until now you have brought up nothing to revive it, especially as you don't address my main point: the strength of the move Nc5, which was not possible in both Karpov games.


That's certainly the first time I hear all this.
Nobody expressed real interest when ArkheiN mentioned that game in the other thread.
If you thought it had theoretical significance, you should have said so.

There were many alternatives to the moves played in that game.
12...g6 seemed good for example.
In my view one sample game cannot reverse the =+ eval.

MNb wrote on 05/12/09 at 03:14:00:

So again: give an improvement on Bonsai's play and show that White has enough compensation after 5...c6 6.Bc4 and I will be a happy man again. Until then I can't back your statements. So I return the "come on".


Sorry, I never said 5...c6 is 0k for White.
I said 5...Bf5 should be even better (more flexible), because Black can play ...c6 or not.

Finally, I agree with Stefan B. that 6.Bd3 is better than 6.Ne5
(stop the prettyness, get out your bishop!!)
  
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Stefan Buecker
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Re: Gah 5...c6, How I hate you.....
Reply #31 - 05/12/09 at 04:35:47
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MNb wrote on 05/12/09 at 03:14:00:
TonyRo wrote on 05/11/09 at 15:03:21:


Quote:
Black has a few other 13th moves, but White's position looks playable indeed. I have had another look and my pessimism is reduced:

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 c6 5.Bc4 exf3 6.Nxf3 Bf5 7.Bg5 e6 8.Qe2 Bb4 9.0-0
a) 9...Nbd7 10.d5 Qb6+ 11.Kh1 Bxc3 12.dxe6.
b) 9...Be7 10.Rad1 (10.Rae1 Nbd7 and now what?) 0-0 (Nbd7 11.Ne5 Nxe5 12.dxe5 Qb6+ 13.Be3 Bc5 14.exf6 Bxe3+ 15.Kh1 0-0 16.fxg7 Kxg7 17.Rd7) 11.Ne5 h6 12.Nxf7 Rxf7 13.Bxf6 Bxf6 14.g4 Bg6 15.Bxe6 Qb6 16.Nxe4 Bxd4+ 17.Kg2.
c) 9...0-0 10.Bxf6 Qxf6 (gxf6 11.Ne4 Bg6 12.c3 Be7 13.Rae1) 11.Ne4 Qh6 12.Ne5.
Not all these lines are mine; line c was given by FM Bücker but I don't remember whose idea line a was.
All this looks quite decent for White.

MNb, your analysis seems to contain quite a few inaccuracies in my opinion. In line a, 11...Bxc3 is dubious on account of 12. dxe6! Black should play 11...cxd5, not allowing 12. dxe6, when maybe White still has enough, maybe not. Either way, it's certainly tougher to prove after this move. 

In line b, you give 10...Nbd7 11. Ne5 Nxe5, but 11...Nxe5 is exactly what White wants. 11...0-0 should be much better, when White probably doesn't have enough. 

In line c, 11...Qd8 is probably better.


b) 10...Nbd7 11.Ne5 0-0 (iso 11...Nxe5) 12.g4 Bg6 13.h4 - I admit it's kind of desperado/kamikaze, but as Black already has castled, who knows?
c) 11...Qd8 (iso 11...Qh6) is also met with Bückers idea 12.c3 Be7 13.Ng3 Bg6 14.Ne5 with active pieceplay.
a) 9...Nbd7 10.d5 Qb6+ 11.Kh1 cxd5 poses a problem though.

Now what I really would like if some BDG-expert like ArkHein or even Bücker himself could comment. And JediKnight's ideas are very welcome as well. Wouldn't it be nice if White could prove sufficient compensation after 5...c6 6.Bc4 after all? I still have doubts of course.


Eeks - suddenly I am a BDG expert. Played it only once... 
In the other thread I showed some sympathy for SWJediknight's Bg5 & Qe2, but my analysis didn't equalize and I also warned that Black has many alternatives. 
In line (a) 9...Nbd7 I'd prefer 10.Ne5. 
In line (b) 9...Be7 looks strange, but seems okay for Black, at least. 
Line (c) 9...0-0 10.Bxf6 gxf6 was good for Black in my analysis. 10...Qxf6 11.Ne4 Qd8 12.c3, White has compensation. 

In the line (1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bf5) there is still the solid alternative mentioned by SWJediknight in reply #129 of the "Antidotes..." thread: 

Quote:
6.Bd3!? may be the best way forward.  Black can indeed try 6...Bg6 in this position, when a sample continuation is 7.Qe2 c6 8.Bf4 e6 9.0-0, or perhaps 9.Bxg6 hxg6 10.0-0-0.


Black better takes on d3: 6...Bxd3 (6...Bg6 7.Bxg6 hxg6 8.Qe2 gives White an attractive position) 7.Qxd3 c6 8.Bf4 e6 9.0-0-0, for example 9...Bd6 (9...Be7 10.h4) 10.Be5 Bc7 (10...Be7!? 11.Ne4) 11.Ne4 Bxe5 12.dxe5 Qxd3 13.Nxf6+ gxf6 14.Rxd3 f5 (14...Nd7 15.exf6 Rg8 16.g3 Nxf6 17.Ne5 Nd5 18.c4 Nb6 19.Rf1 Rg7 20.Rdf3 f5 21.g4) 15.Rhd1 Ke7 16.g3 and White has sufficient compensation for the pawn.
  
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MNb
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Re: Gah 5...c6, How I hate you.....
Reply #30 - 05/12/09 at 03:14:00
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TonyRo wrote on 05/11/09 at 15:03:21:


Quote:
Black has a few other 13th moves, but White's position looks playable indeed. I have had another look and my pessimism is reduced:

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 c6 5.Bc4 exf3 6.Nxf3 Bf5 7.Bg5 e6 8.Qe2 Bb4 9.0-0
a) 9...Nbd7 10.d5 Qb6+ 11.Kh1 Bxc3 12.dxe6.
b) 9...Be7 10.Rad1 (10.Rae1 Nbd7 and now what?) 0-0 (Nbd7 11.Ne5 Nxe5 12.dxe5 Qb6+ 13.Be3 Bc5 14.exf6 Bxe3+ 15.Kh1 0-0 16.fxg7 Kxg7 17.Rd7) 11.Ne5 h6 12.Nxf7 Rxf7 13.Bxf6 Bxf6 14.g4 Bg6 15.Bxe6 Qb6 16.Nxe4 Bxd4+ 17.Kg2.
c) 9...0-0 10.Bxf6 Qxf6 (gxf6 11.Ne4 Bg6 12.c3 Be7 13.Rae1) 11.Ne4 Qh6 12.Ne5.
Not all these lines are mine; line c was given by FM Bücker but I don't remember whose idea line a was.
All this looks quite decent for White.

MNb, your analysis seems to contain quite a few inaccuracies in my opinion. In line a, 11...Bxc3 is dubious on account of 12. dxe6! Black should play 11...cxd5, not allowing 12. dxe6, when maybe White still has enough, maybe not. Either way, it's certainly tougher to prove after this move. 

In line b, you give 10...Nbd7 11. Ne5 Nxe5, but 11...Nxe5 is exactly what White wants. 11...0-0 should be much better, when White probably doesn't have enough. 

In line c, 11...Qd8 is probably better.


b) 10...Nbd7 11.Ne5 0-0 (iso 11...Nxe5) 12.g4 Bg6 13.h4 - I admit it's kind of desperado/kamikaze, but as Black already has castled, who knows?
c) 11...Qd8 (iso 11...Qh6) is also met with Bückers idea 12.c3 Be7 13.Ng3 Bg6 14.Ne5 with active pieceplay.
a) 9...Nbd7 10.d5 Qb6+ 11.Kh1 cxd5 poses a problem though.

Now what I really would like if some BDG-expert like ArkHein or even Bücker himself could comment. And JediKnight's ideas are very welcome as well. Wouldn't it be nice if White could prove sufficient compensation after 5...c6 6.Bc4 after all? I still have doubts of course.

Uruk wrote on 05/11/09 at 11:26:17:

You will see ArkheiN, SWJedi and you yourself (!)
agree that 5...Bf5 is at least =+ and that Ne5 is nothing.

My enthusiasm about that line waned when ArkHein reminded me of the Schoupal-Bonsai game. Until now you have brought up nothing to revive it, especially as you don't address my main point: the strength of the move Nc5, which was not possible in both Karpov games.
For the sake of clarity: I would love to see 5...Bf5 proven the refutation of the BDG and 5...c6 6.Bc4 playable (gambiting the Caro-Kann! Ha!). I even tend to agree that on general grounds 5...Bf5 should be better than 5...c6. But I want empirical evidence in the form of moves as well. As a result I suffer from cognitive dissonance. In such cases I always give priority to the moves and their evaluation.
So again: give an improvement on Bonsai's play and show that White has enough compensation after 5...c6 6.Bc4 and I will be a happy man again. Until then I can't back your statements. So I return the "come on".
  

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Re: Gah 5...c6, How I hate you.....
Reply #29 - 05/11/09 at 22:28:22
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Well to allow White's dream (chase bishop g4-h4)
is bad on general principles, even if Black remains better.

You may want to take the discussion to another thread
because TonyRo will kill the off-topic kids
(although if he hates 5...c6, he has to hate 5...Bf5)
  
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Re: Gah 5...c6, How I hate you.....
Reply #28 - 05/11/09 at 20:25:06
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Uruk, White is worse materially, that's a fact, and even if it's only a pawn, it may be important. But chess is complicate enough to say that White can't compensate for the pawn. Based from experience it seems that White often has compensation, and here too, experience is needed in that line, it's for that Iam challenging you. Oh and 5..e6 is not a mistake, Black isn't worse, but I agree that the lines are generally fun to play as White where I am about sure that the compensation is clearly sufficient.
  
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TonyRo
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Re: Gah 5...c6, How I hate you.....
Reply #27 - 05/11/09 at 15:27:42
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This thread is about 5...c6 guys. Take your argument to a thread devoted to 5...Bf5!  Angry

Grin
  
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Re: Gah 5...c6, How I hate you.....
Reply #26 - 05/11/09 at 15:17:31
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Bother to justify? I explained why 6...e6 is a mistake.

Let's play the line if you want but what's the purpose exactly,
don't you agree White is worse?
  
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Re: Gah 5...c6, How I hate you.....
Reply #25 - 05/11/09 at 15:03:21
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MNb wrote on 05/10/09 at 20:23:02:
Stefan Buecker wrote on 05/10/09 at 01:21:33:


13.Qe1 Nh5 14.Nb5 Bxe1 15.Nxd4 Ba5 16.Kg1 b5 17.Bb3 Bb6 18.Be3 a6 19.a4 0-0 20.Rae1, about =.  


Black has a few other 13th moves, but White's position looks playable indeed. I have had another look and my pessimism is reduced:

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 c6 5.Bc4 exf3 6.Nxf3 Bf5 7.Bg5 e6 8.Qe2 Bb4 9.0-0
a) 9...Nbd7 10.d5 Qb6+ 11.Kh1 Bxc3 12.dxe6.
b) 9...Be7 10.Rad1 (10.Rae1 Nbd7 and now what?) 0-0 (Nbd7 11.Ne5 Nxe5 12.dxe5 Qb6+ 13.Be3 Bc5 14.exf6 Bxe3+ 15.Kh1 0-0 16.fxg7 Kxg7 17.Rd7) 11.Ne5 h6 12.Nxf7 Rxf7 13.Bxf6 Bxf6 14.g4 Bg6 15.Bxe6 Qb6 16.Nxe4 Bxd4+ 17.Kg2.
c) 9...0-0 10.Bxf6 Qxf6 (gxf6 11.Ne4 Bg6 12.c3 Be7 13.Rae1) 11.Ne4 Qh6 12.Ne5.
Not all these lines are mine; line c was given by FM Bücker but I don't remember whose idea line a was.
All this looks quite decent for White.


MNb, your analysis seems to contain quite a few inaccuracies in my opinion. In line a, 11...Bxc3 is dubious on account of 12. dxe6! Black should play 11...cxd5, not allowing 12. dxe6, when maybe White still has enough, maybe not. Either way, it's certainly tougher to prove after this move. 

In line b, you give 10...Nbd7 11. Ne5 Nxe5, but 11...Nxe5 is exactly what White wants. 11...0-0 should be much better, when White probably doesn't have enough. 

In line c, 11...Qd8 is probably better.
  
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ArKheiN
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Re: Gah 5...c6, How I hate you.....
Reply #24 - 05/11/09 at 14:40:42
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6..e6 is far from being a mistake, sorry... Do you want to accept my challenge?
  
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Uruk
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Re: Gah 5...c6, How I hate you.....
Reply #23 - 05/11/09 at 14:07:19
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I don't get the !? sign you all attach to 6...c6
It's almost forced because the immediate 6...Nbd7 (exchange the idiot!),
leaves b7 unprotected (Qf3!)

Of course 6...e6? is a big fat mistake,
the only thing White can hope for when playing Ne5.
It justifies Ne5 by allowing the bishop chase g4-h4.

So the real annotation should be 6.Ne5?! (better get out the bishop)
6...c6 7.g4?! (huh? chasing shadows) Be6.

If you want we can investigate further,
though I don't really see the point
of trying to prove a draw with White.
So many ambitious openings...
  
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Re: Gah 5...c6, How I hate you.....
Reply #22 - 05/11/09 at 11:58:37
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I will speak from memory, dear Uruk.

I agreed that 5.Nxf3 Bf5 6.Ne5 c6!? 7.g4 Be6 was interesting and White's compensation nos as clear here as 6..e6 for example. I didn't say it was =/+, I think White can keep the balance but that's just less clear here.

But no, I don't play hope chess because I used it 100 times and continue to play that at corr play against good opposition. If I remember correctly I even gave you a challenge in this line where I would try to play the White's side at best. 

So I am ready to play that line against you, on the forum for example...
  
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