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Very Hot Topic (More than 25 Replies) B76: Some ideas on 9.g4 (Read 35456 times)
fling
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Re: Some ideas on 9.g4
Reply #32 - 09/26/11 at 14:33:11
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I am at work too. I think I have seen this line or something similar (as in maybe not with a3) by transposition in Experts vs the Sicilian. Is this correct?
  
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bragesjo
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Re: Some ideas on 9.g4
Reply #31 - 09/26/11 at 14:22:43
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I am at work now and has not access to any form of chessboard, but unless I missrember the position after 9.g4 Be6 10.O-O-O Nxd4 11.Bxd4 Qa5 12.a3 Rab8 13.h4 , b5 is best move when blacks attack is faster than whites. Nd5 is then more or less forced leeding to a standard endgame.
If white inserteds Kb1 or plays Qe1 then black inserts Rfc8. In "Winning with the Dragon" Ward
wrote something like that he prefered Rfc8 instead of b5 order to give white some attacking chanses to avoid the endgame.

About Nb1, I think I meet this idea several times in similar positions.

I will check your lines later tonight.
  
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Re: Some ideas on 9.g4
Reply #30 - 09/26/11 at 13:28:38
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bragesjo wrote on 01/30/10 at 21:44:49:
Thanks, I will have a closer look later but I can agree that Nxe6 lines is at least more ambitious than the usual dull endgames resulting from 9 g4.


bragesjo wrote on 02/01/10 at 20:15:57:
Have look a bit closer, the line is in fact serious winning try (maybee even better than 9 0-0-0 these days) and has been negacted by theory. Both sides will get lots of play, maybee white has the slightly better prospecs.

Last few days I have looked at this 9.g4 stuff, but neglected ...e6 so far. I agree that those endgames resulting from Nc3-d5 are dull. Fortunately this move is not necessary; neither is the prophylactic Kc1-b1. White scores amazingly well after 9.g4 Be6 10.O-O-O Nxd4 11.Bxd4 Qa5 12.a3 Rab8 13.h4 Rfc8 14.h5 b5 15.hxg6. A few interesting lines:
a) 15...b4 16.gxh7+ Kh8 17.Nb1, an idea (not mine) borrowed from the Argentinean Attack in the Pirc. White can afford Black invading with the Queen to a1.
b) 15...fxg6 16.g5 b4 17.Nb1 b3 18.c4 might be worth a try too.
c) 15...fxg6 16.g5 Nh5 17.Bxg7 Sax-Relange and perhaps 17.Bh3 Dobrin-Jobe, corr IECC 1999 look promising.
d) 15...hxg6 16.Qg5 d5! equalizes and so does 16.g5 b4 17.gxf6. So this might be the right moment to play the endgame with 16.Nd5.

My impression is that chances are equal indeed, but that Black walks quite a narrow road to maintain that equality. White's play is very simple and easy to learn. There is not much theory to learn - especially compared to some Anti-Sicilians - so 9.g4 suits the aggressive amateur very well.

If 10.Nxe6 is dangerous as well then White has an equally aggressive option with 9.g4, similar in ideas. I'm not so sure if 9...Nxd4 10.Bxd4 Be6 11.h4 is objectively better, mainly because I haven't all the transpositions figured out yet - White always can castle Queenside if it suits, though usually has to play a2-a3 first. For instance, to anticipate line d above, 11...Qa5 12.h5 Rfc8 13.hxg6 hxg6 14.a3 (14.g5 Nh5 15.Bxg7 Kxg7 16.f4 Skacel-Vacek, CZE 2005, Nxf4 17.Qxf4 Rxc3 -+) Rab8 (b5 at once) and now 15.O-O-O b5 transposes. But is 15.Bd3 really better?
  

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bragesjo
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Re: B76: Some ideas on 9.g4
Reply #29 - 09/26/11 at 07:45:40
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At subscription sections latest update a game is feutured when black plays 9 .. Bxd4 10 Bxd4 Be6  11 h4 Qa5!?. I have hower not had the time to analyse that game and annotaded lines to it  yet.
  
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bragesjo
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Re: B76: Some ideas on 9.g4
Reply #28 - 09/22/11 at 13:29:38
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It is also interesting that white has such a high score in this line with Be6. I assume it must be within the reinveted Nxe6 line but still interesting.
  
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Re: B76: Some ideas on 9.g4
Reply #27 - 09/22/11 at 05:03:07
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14. Rb1 as in J. Valder-D. Czajka, Correspondence 1991 seems interesting (instinctively I'm not a big fan of undermining the Nc3's protection and making Qa5 more effective). Granted, I haven't checked it all that deeply but it seems like white can safely play for 0-0, leaving black to prove his compensation is enough.

It seems interesting at any rate.
  

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Re: B76: Some ideas on 9.g4
Reply #26 - 09/22/11 at 03:00:52
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Tiviakov's main line after 9...Bxg4 10. fg Nxg4 11. Nxc6 bc 12. Bg5 in his 1990s monograph:  12...Rb8 13. Be2 Ne5 14. b3 Qa5 15. Nd1 Qc7 "with compensation."
  
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Re: B76: Some ideas on 9.g4
Reply #25 - 09/22/11 at 00:26:11
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Is black really better after 10. Nxc6 bxc6 11. Bg5?

It seems like he obviously has some compensation, but instead of wondering whether he's better it seems fair to wonder whether it's enough to even claim equal chances.
  

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Re: B76: Some ideas on 9.g4
Reply #24 - 09/21/11 at 15:52:37
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This sounds like a interesting sac. Andrew Martins says something like " Probebly unsound but gives white several difficult defence problems". Martins however only looks at 11 .. a5. He also analyses 10 Bg1 and 10 Nxc6 where he thinks black is better. This line looks realy intresting, will look at it later this week.
  
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Re: B76: Some ideas on 9.g4
Reply #23 - 09/21/11 at 15:25:07
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I suppose 13.bxc3 Nxe3 14.Qxe3 Qxd5 15.Rg1 Rad8 16.Bd3 (the only game I found won by White) Qh5 is about equal. It's a shocking line to meet if you've never seen it.
  

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Re: Some ideas on 9.g4
Reply #22 - 09/21/11 at 14:36:36
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Paddy wrote on 09/21/11 at 10:53:18:
The 9 g4 line has continued to be popular so far in 2011 with White scoring about 70% from over 50 games. One of the latest was Hou Yifan vs Cmilyte from Shenzhen. I was intrigued by GM Spraggett's comment on his blog:

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 0-0 8.Qd2 Nc6 9.g4 Be6 "I am surprised that this line is becoming popular today, especially since White seems to have 'forgotten' that the problem lies in this variation: 9...Bxg4!? 10.fxg4 Nxg4 11.Nb3!? d5! 12.exd5 Bxc3!! I just don't see what White can do here!  Black seems to be in great shape. However, Cmilyte played 9...Be6 and got slowly outplayed by the woman World Champion."


I think that is an offer (or similar) I remember from when first reading about the Dragon. Don't know where, Basman maybe?
  
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Re: Some ideas on 9.g4
Reply #21 - 09/21/11 at 10:53:18
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The 9 g4 line has continued to be popular so far in 2011 with White scoring about 70% from over 50 games. One of the latest was Hou Yifan vs Cmilyte from Shenzhen. I was intrigued by GM Spraggett's comment on his blog:

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 0-0 8.Qd2 Nc6 9.g4 Be6 "I am surprised that this line is becoming popular today, especially since White seems to have 'forgotten' that the problem lies in this variation: 9...Bxg4!? 10.fxg4 Nxg4 11.Nb3!? d5! 12.exd5 Bxc3!! I just don't see what White can do here!  Black seems to be in great shape. However, Cmilyte played 9...Be6 and got slowly outplayed by the woman World Champion."
  
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Re: Some ideas on 9.g4
Reply #20 - 12/10/10 at 09:35:54
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chk wrote on 12/10/10 at 09:21:48:
Another game with this variation. Of course Short has played 9. g4 before, but I don't think he has used the approach discussed here with NxBe6.

Short,N (2680) - McShane,L (2645) [B76]
2nd London Chess Classic London ENG (2), 09.12.2010
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 0-0 8.Qd2 Nc6 9.g4 Be6 10.Nxe6 fxe6 11.0-0-0 Rc8 12.Bc4 Qd7 13.Bb3 Na5 14.h4 Nc4 15.Qd3 Qc6 16.Ne2 Nd7 17.Nd4 Qa6 18.f4 e5 19.fxe5 Ndxe5 20.Qe2 Kh8 21.h5 gxh5 22.g5 Ng4 23.Bg1 Nce3 24.Qxa6 bxa6 25.Bxe3 Nxe3 26.Rd3 Bxd4 27.Rxd4 Rc5 28.Rd3 Ng2 29.Rg3 Nf4 30.Kd2 Re5 31.Re1 Kg7 32.Ke3 Kg6 33.c3 Rxg5 34.Rxg5+ Kxg5 35.Rg1+ Kh6 36.e5 dxe5 37.Ke4 Ng6 38.Bc4 a5 39.Kd5 Rf2 40.b4 axb4 41.cxb4 h4 42.a4 h3 43.a5 h2 44.Rh1 Kg5 45.b5 Kg4 46.b6 axb6 47.a6 Kg3 48.a7 Rf8 49.Kc6 Nf4 50.Ra1 e4 51.Ba6 Nh3 52.Bb7 Ng1 0-1.

Anyone who has watched commentary to this game? Or made some own analysis?


Fortunately for me, I did but only upto move 13. Trent & Gordon did the first session before Daniel King & Chris Ward took over. Wonderful to hear the background behind move 9... Be6 in the Dragon setups!
  
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Re: Some ideas on 9.g4
Reply #19 - 12/10/10 at 09:21:48
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Another game with this variation. Of course Short has played 9. g4 before, but I don't think he has used the approach discussed here with NxBe6.

Short,N (2680) - McShane,L (2645) [B76]
2nd London Chess Classic London ENG (2), 09.12.2010
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 0-0 8.Qd2 Nc6 9.g4 Be6 10.Nxe6 fxe6 11.0-0-0 Rc8 12.Bc4 Qd7 13.Bb3 Na5 14.h4 Nc4 15.Qd3 Qc6 16.Ne2 Nd7 17.Nd4 Qa6 18.f4 e5 19.fxe5 Ndxe5 20.Qe2 Kh8 21.h5 gxh5 22.g5 Ng4 23.Bg1 Nce3 24.Qxa6 bxa6 25.Bxe3 Nxe3 26.Rd3 Bxd4 27.Rxd4 Rc5 28.Rd3 Ng2 29.Rg3 Nf4 30.Kd2 Re5 31.Re1 Kg7 32.Ke3 Kg6 33.c3 Rxg5 34.Rxg5+ Kxg5 35.Rg1+ Kh6 36.e5 dxe5 37.Ke4 Ng6 38.Bc4 a5 39.Kd5 Rf2 40.b4 axb4 41.cxb4 h4 42.a4 h3 43.a5 h2 44.Rh1 Kg5 45.b5 Kg4 46.b6 axb6 47.a6 Kg3 48.a7 Rf8 49.Kc6 Nf4 50.Ra1 e4 51.Ba6 Nh3 52.Bb7 Ng1 0-1.

Anyone who has watched commentary to this game? Or made some own analysis?
  

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bragesjo
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Re: Some ideas on 9.g4
Reply #18 - 10/01/10 at 17:33:21
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A recent game from the olympics between Ponomariov and Radjabov in g4 Nxe6 variation. Radjabov did put hes rook to c8 and according to computer white was much better most of the game except the position where they agreed to a draw when I think black is better and computer agrees.

[Event "39th Olympiad Men"]
[Site "Khanty-Mansiysk RUS"]
[Date "2010.09.30"]
[Round "9.1"]
[White "Ponomariov, Ruslan"]
[Black "Radjabov, Teimour"]
[Result "1/2-1/2"]
[ECO "B75"]
[WhiteElo "2749"]
[BlackElo "2748"]
[PlyCount "86"]
[EventDate "2010.09.21"]
[EventType "team"]
[WhiteTeam "UKR"]
[BlackTeam "AZE"]



« Last Edit: 09/26/11 at 12:09:21 by MNb »  
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