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Hot Topic (More than 10 Replies) Accelerated Dragon 5.Nc3 8...a5 (Read 7567 times)
MemoryMaster
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #10 - 01/18/10 at 16:23:02
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Markovich wrote on 01/18/10 at 15:25:55:
bragesjo wrote on 01/18/10 at 09:51:55:
The great El Khalif did not like Nb5 becouse of d5. About he sac it looks interesting, not shure who is better


de la Villa, whose book is really very useful for playing the Sicilian from either side and treats Nb5 at length, opines that White is still better after d5.  I was told by some strong and experienced players in the Dragon forum (where this thread should be moved) that Black's game is considered to be difficult after 9.O-O.  I've looked at it at some length, and I can see what they mean.


My conclusion after having looked at 11...d5 briefly is that I would easily feel confident playing this as black until someone finds a way some idea for white (which I think is unlikely).

11.Nb5 d5 

12.f3 d4 13.Nxd4 Nxd4 14.fxe4 and white does not have much use of the pawn and will have to give it up in the long run.

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12.Bb6 Qd7

a)13.Nc7 Rxa4 14.Bxa4 Bxb2 15.Qxd5 Bxa1 black is ok

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b)13.f3 Ne5 14.Nc7 Rxa4 15.Bxa4 Qxa4 16.fxe4 dxe4 17.Nd5 

17...Bg4 18.Nxe7 Kh8 19.Qd5 Be6 20.Qxb7 Qxc2 21.Ba6
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17...Re8 18.c3 Qc6 19.Be3 and I am convinced black hs compensation for the pawn.

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This does not mean I particularly like 11.c4 instead.  Since white has played 9.0-0 I still think white should play 11.Nb5 just on principle.
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #9 - 01/18/10 at 15:25:55
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bragesjo wrote on 01/18/10 at 09:51:55:
The great El Khalif did not like Nb5 becouse of d5. About he sac it looks interesting, not shure who is better


de la Villa, whose book is really very useful for playing the Sicilian from either side and treats Nb5 at length, opines that White is still better after d5.  I was told by some strong and experienced players in the Dragon forum (where this thread should be moved) that Black's game is considered to be difficult after 9.O-O.  I've looked at it at some length, and I can see what they mean.
  
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bragesjo
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #8 - 01/18/10 at 09:51:55
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The great El Khalif did not like Nb5 becouse of d5. About he sac it looks interesting, not shure who is better
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #7 - 01/18/10 at 02:25:29
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To me the main question after 17.Qe1 seems "what compensation does Black have for the Exchange?" I am not sure about the answer. If you think this offers White better chances you should by all means play it. I also wonder if that exchange sac is Black's best (11...Ra6 idea 12...d5).
Khalifman did not write a book on criminal law. You won't be punished if you dare to deviate from his recommendations. So I think it a bit unfair to criticize Khalifman for preferring 11.c4. Then what should I do? Slay him and Anand for not investigating 4.Be3 against the Pirc without explaining why?
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #6 - 01/17/10 at 23:01:35
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bragesjo wrote on 01/17/10 at 05:25:23:
Khalifman writes "This is a rarely played move, with  Whitch White is going after acqurring a space advantage. It is much more popular for him to choose 11 Nb5 but there arises after it a position of entirely different type. Following d5 white has problems proving his advantage".

After 11 .. d6 he playes 12 Re1!? Ra6 Nb5 Nf6 etc


After 11.Nb5 Ra6 white could play 12.c4 and white should be better in this variation compared to 11.c4 as the knight certainly belongs to b5 but the rooks placement certainly seems more suspicious.

The difficult question is what the evaluation is after 11.Nb5 Rxa4 12.Bxa4 Bxb2 13.Rb1 Bg7 14.f3 Qa5 15.Bb3 Nc3 16.Nxc3 Qxc3 17.Qe1 and now:

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17...Qxe1 as in Bologan-Katz or
17...Qe4 as in Karjakin-Jones

I can surely understand Khalifman if he cannot have time to analyse this variation (but nonetheless very critical) in his book and satisfies the reader with 11.c4 "acquiring a space advantage".

However, I think this is a too vague of a statement to accept if you want to call yourself ambitious in the opening and hopefully there are others on these forums who, just like me, would be interested in taking a closer look at 11...Rxa4.
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #5 - 01/17/10 at 05:25:23
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Khalifman writes "This is a rarely played move, with  Whitch White is going after acqurring a space advantage. It is much more popular for him to choose 11 Nb5 but there arises after it a position of entirely different type. Following d5 white has problems proving his advantage".

After 11 .. d6 he playes 12 Re1!? Ra6 Nb5 Nf6 etc
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #4 - 01/16/10 at 21:49:26
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bragesjo wrote on 01/16/10 at 12:22:56:
Khalifman recommend 9 0-0 when a4 is meet by 10 Nxa4 Nxe4 11 c4!? claiming a positional edge


Position after 10 Nxa4 Nxe4 11 c4!?
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That is interesting, white gave up a centre pawn for a flank pawn and in return he has a majority on his queen side. I admit I do not understand the reason for this in the given position. I am using http://www.redhotpawn.com/gamesexplorer as my reference of games and there are no games from this position. Please could you explain what Kahlifman means with "positional advantage".

Furthermore, on 9...d6 white responds 10. h3 rather than 10.f3 This appears to be logical in a way as he played 9.0-0 but I do not see the concrete advantage of doing this or the plan associated with it. The idea with 9.0-0 must be to avoid 9.f3 d5 and therefore it would equally make sense to play 9.0-0 d6 10.f3 

Does Kahlifman equally recommend 10.h3 a4 11.Nxa4 Nxe4 12.c4 is my question.
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #3 - 01/16/10 at 12:22:56
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Khalifman recommend 9 0-0 when a4 is meet by 10 Nxa4 Nxe4 11 c4!? claiming a positional edge
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #2 - 01/15/10 at 09:12:29
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Great, thank you! I shall get this book.
  
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Re: Accelerated Dragon 5.Nc3 8...a5
Reply #1 - 01/15/10 at 09:01:48
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Firstly, this thread belongs to the Dragon Forum - I think a moderator can (and will) move it there.

Secondly, if you seriously think of adopting the Acc. Dragon as Black, I can recommend a truly excellent book: Andrew Greet's Starting Out with the Accelerated Dragon. It is up to date (a couple of years old but the theory does not evolve that much) and takes his time to explain things.  Smiley
  
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Accelerated Dragon 5.Nc3 8...a5
01/15/10 at 01:41:51
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1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 Nf6 7. Bc4 O-O 8. Bb3 a5

I am wondering what the latest theory is in this position. Is 9.0-0 supposed to be better than 9.f3 and how do the critical variations go?
  
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