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Very Hot Topic (More than 25 Replies) Classical Sicilian: where to begin? (Read 36378 times)
gewgaw
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Re: Classical Sicilian: where to begin?
Reply #40 - 05/11/13 at 12:16:20
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kylemeister wrote on 05/10/13 at 14:48:21:
Scarblac wrote on 05/07/13 at 14:25:36:
And is there any specific theoretical problem with 6.Bg5 e6 7.Qd2 Be7 8.0-0-0 0-0, or is it just considered slightly better for white in general?

That line has always seemed obviously correct to me (what can possibly be wrong with straightforward development?), but of course chess isn't such a simple game.


I can't claim to be up on the most recent tries, but some time ago I became accustomed to seeing it considered as falling into the "+= with best play" category.  I notice that Wang Hao is playing (via an alternative move order) one of the old main sublines (9. f4 Nxd4 plus ...Qa5 and ...Bd7-c6) today against Karjakin.

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O Nxd4 9. Qxd4 O-O 10. f4 Bd7 11. Bc4 Qa5 12. e5 dxe5 13. fxe5 Bc6 14. Bd2 Nd7 15. Nd5 Qc5 16. Nxe7+ Qxe7 17. Rhe1 Nb6 18. Bf1 Rfd8 19. Qf4 Rac8 20. Kb1 Ba4 21. b3 Qc5 22. c4 Rd4 23. Be3 Rxf4 24. Bxc5 Bc6 25. Kb2 h5 26. g3 Rg4 27. Be3 Bf3 28. Rd4 Rxd4 29. Bxd4 g5 30. a4 Rd8 31. Kc3 Nc8 32. b4 a6 33. Bc5 g4 34. b5 axb5 35. axb5 Kg7 36. Bd3 f5 37. exf6+ Kxf6 38. Bd4+ Kf7 39. h4 1-0

[Event "Moscow ol (Men)"]
[Site "Moscow"]
[Date "1994.??.??"]
[Round "13"]
[White "Adams, Michael"]
[Black "Kramnik, Vladimir"]
[Result "1/2-1/2"]
[ECO "B65"]
[WhiteElo "2640"]
[BlackElo "2725"]
[Annotator "Speelman,J"]
[PlyCount "107"]
[EventDate "1994.12.01"]
[EventType "swiss"]
[EventRounds "14"]
[EventCountry "RUS"]
[Source "ChessBase"]
[SourceDate "1995.04.01"]

1. e4 {Boensch  Ftacnik  Hecht  Ernst} c5 2. Nc3 Nc6 3. Nf3 d6 4. d4 cxd4 5.
Nxd4 Nf6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O Nxd4 9. Qxd4 O-O 10. f4 Qa5 11. Bc4 Bd7
12. e5 dxe5 13. fxe5 Bc6 14. Bd2 Nd7 15. Nd5 Qc5 16. Nxe7+ Qxe7 17. Rhe1 Rfd8
18. Qg4 (18. Bf1 {Boensch} Nf8 19. Qe3 Qh4 20. h3 Ng6 21. c4 Rd4 22. g3 Rxc4+
23. Bc3 Qe4 24. Qd2 Qd5 25. Qxd5 Rxc3+ 26. bxc3 Bxd5 $10 {Yudasin,L-Kotronias,
V Moscow olm (04) ISR-GRE 1994 1/2 64 -CBM 45}) 18... Nf8 (18... Nb6 19. Bf1
Qc5 20. Qb4 Qf2 21. Qf4 Qxf4 22. Bxf4 $14 {Tseshkovsky,V-Yudasin,L/URS-ch/1986/
1/2-1/2/42}) 19. Bd3 (19. h4 $5 $146 Qc5 20. Bc3 $1 h5 $2 21. Qe2 $1 Bxg2 22.
Rxd8 Rxd8 23. Bd3 $1 Bh3 $8 24. Qxh5 f5 25. Qf3 Bg4 26. Qxb7 $16 {Sherzer,
A-Rachels,S/USA-ch/1992/1:0/38}) (19. Bf1 Qc5 $1 20. Bc3 Ng6 21. Qg5 Rd5 22.
Rxd5 Bxd5 23. a3 Rc8 24. Qe3 Qc6 25. g3 a6 26. Be2 Ne7 27. Qg5 Qc7 $10 {Kamsky,
G-Anand,V/Linares/1993/0:1/68}) 19... Rxd3 (19... Qc7 {Boensch} 20. Bb4 Bd5 21.
Kb1 Rac8 22. Bd6 Qc6 23. b3 b5 24. Re3 Ng6 25. h4 $40 {Tatai,S-Epishin,V
Reggio Emilia (06) 1994 1-0 42 - CBM 45}) 20. cxd3 Qd7 (20... Qc5+ $5 21. Kb1
Qd5 $44) (20... Ng6 {Boensch} 21. Kb1 Qd8 22. Bc3 a5 23. g3 Ne7 24. Bd4 Qd5 25.
Bg1 {Der Plan Bd4-g1 verspricht keinen Vorteil.} a4 26. Qb4 Qd8 27. Bb6 Qd7 28.
Bc5 Nd5 29. Qd4 Qd8 30. Rf1 Qg5 31. Rf2 Rd8 32. Ka1 h6 $10 {Anand,V-Lobron,E
Manila olm (13.06.1) 1992 1/2 52}) 21. Bb4 (21. Kb1 Qxd3+ $6 22. Ka1 $14 {
Ivanchuk,V-Anand,V (07)/Linares m/1992/1:0/51} (22. Ka1 {Boensch} h5 (22... Qf5
23. Qg3 Ng6 24. Bc3 h6 25. Rf1 Qe4 26. Rd2 Bd5 27. b3 Rc8 28. Kb2 a6 29. Rdf2
Rc7 30. Re1 Qh4 31. Qxh4 Nxh4 $10 {Ivanchuk,V-Anand,V (7) Linares m 1992 1-0 51
}) 23. Qe2 (23. Qxh5 Ba4 24. Bc3 Bxd1 25. Rxd1 Qe4 26. Qf3 (26. Qg5 a5 27. Qd2
Ng6 28. g3 Ne7 29. Qd7 Nd5 30. Bd4 Qe2 31. Rc1 b5 32. Bc5 Qd3 33. Qc6 Rd8 34.
Bd6 Kh7 35. Qc5 Kg6 $1 36. h4 Rh8 $1 37. a3 Rh5 $17 {Oll,L-Hodgson,J Groningen
PCA (03) 1993 0-1 46}) 26... Qxf3 27. gxf3 Kh7 28. b4 Kg6 29. a4 Kf5 30. h4 Rc8
31. Kb2 g6 32. Rd4 Rc7 33. a5 $10 {Hracek,Z-Leko,P Brno (8) 1993 1/2 44}) 23...
Qxe2 24. Rxe2 Rd8 25. Rde1 Ng6 26. g3 a6 27. b3 Rd3 28. Kb2 h4 29. Kc2 Rd4 30.
Be3 Rg4 31. Bf2 hxg3 32. hxg3 Ne7 $10 {Almasi,Z-Zolnai,T HUN-ch (09) 1992 1/2
49})) (21. Re3 $5 {Ftacnik}) (21. Re3 {Boensch} Qd5 22. Kb1 Ng6 23. Bc3 (23.
Rg3 Qxe5 24. Bc3 Qb5 25. h4 h5 26. Qe2 Bd5 27. b3 a5 28. Qxh5 a4 29. Rxg6 fxg6
30. Qxg6 Qd7 31. b4 $14 {Stefansson,H-Kotronias,V Reykjavik op (03) 1994 1/2 51
}) 23... Qxg2 24. Qxg2 Bxg2 25. Rg3 Bc6 26. Rdg1 Rd8 27. Kc2 Rd7 28. b3 Kh8 29.
Rg4 Ne7 30. Rd4 Bd5 31. Rf4 Nf5 32. Kd2 Bc6 33. a4 h6 34. Rxf5 exf5 35. Rxg7
Rxd3+ 36. Kxd3 {1/2-1/2 Ivanov,AV-Rachels,S/USA-ch (1) 1989}) 21... Qd5 22.
Bxf8 Rxf8 23. Kb1 Qxg2 24. Qxg2 (24. Qh4 $1 {Ernst} g6 25. Re3 Bd5 26. Rh3 h5
27. Rc1 $14 {Psakhis,L-Greenfeld,A/Tel Aviv/1991} (27. Rc1 {Boensch} Qd2 28. b3
a5 29. Qf6 a4 30. Rg3 axb3 31. Rxg6+ $10 {Psakhis,L-Greenfeld,A Tel Aviv (04)
1991 1/2 37})) (24. Qf4 {Ernst}) 24... Bxg2 25. Rc1 Bc6 26. Kc2 (26. Rc4 Rd8
$146 (26... f5 27. exf6 Rxf6 28. h4 h6 29. Rg1 Kf7 30. h5 Kf8 31. Kc2 Rf5 32.
Rcg4 Rf7 33. Kc3 Bf3 34. Rg6 Rc7+ 35. Kd2 Bxh5 $10 {Georgiev,Ki-Gurevich,D/
Palma de Mallorca/1989/1/2-1/2/59}) 27. Kc2 g6 28. Kc3 Kg7 29. b4 h6 30. Rc5 a6
31. Ra1 g5 32. a4 Bf3 33. Rc7 Kg6 34. d4 Rf8 35. Rf1 g4 36. Kd2 f5 $6 37. exf6
Rxf6 38. Re7 h5 39. Ke3 h4 40. Rf2 Bc6 41. Rf4 $1 $16 {Palac,M-Lisenko,A/
Vinkovci/1993/1/2-1/2/81}) 26... f5 {And finally the two players began to play
their own moves! I must say that this particular variation is a very strange
choice as Black has no winning chances whatsoever. In addition, as the game
shows, white has reasonable winning chances. After all, if a 2700 player such
as Kramnik cannot hold this endgame, what chance has a mere mortal 2500 player?
} 27. exf6 {White would have no winning chances if Black were allowed a passed
f-pawn.} Rxf6 28. Rf1 Rh6 (28... Rxf1 $2 {Boensch} 29. Rxf1 {/\ Kc3-d4-e5 +-})
29. Rf2 Rh3 30. Kc3 h6 (30... Bb5 {Ftacnik} 31. Rd1) 31. Kd4 Kh7 32. b3 g5 33.
Rcf1 Kg6 (33... Bb5 {Ftacnik} 34. Rf7+ Kg6 35. Rxb7 $16) (33... Bd5 $2 {Boensch
} 34. Rf7+ Kg6 35. R1f6+ Kh5 36. Rh7 $18) 34. Rf6+ Kh5 35. Rxe6 Rxh2 36. Rff6 (
36. a4 {Boensch} Kg4 $10) 36... Rxa2 37. Rxh6+ Kg4 38. Re5 Rg2 39. Rg6 Kh4 (
39... Kf4 {Ftacnik} 40. Rf6+ Kg4 41. Ke3 Rg3+ 42. Kd2 Rg2+ 43. Kc3 Rg1 44. d4
$16) 40. Rh6+ Kg4 41. Rg6 (41. Rh8 {Ernst} Kf4 $10) 41... Kh4 {And here most
observers expected the game to end in a draw by three fold repetition after 42.
Rh6+. However, as both Short and Hodgson had lost to Kasparov and Tiviakov by
now, Adams was forced to find a way to fight on.} 42. Re3 g4 43. Ke5 Rf2 (43...
Rd2 {Ernst}) (43... g3 {Ftacnik} 44. d4 $1) 44. d4 Rd2 45. Rh6+ Kg5 46. Rh8 (
46. Rd6 $5 {Boensch}) 46... Bf3 47. Rf8 Bc6 48. b4 b6 (48... a6 {Ernst} 49. Rd8
{/\ 50.d5} (49. Rd8 {Ftacnik} Bf3 50. d5 $16)) 49. Rd8 a5 50. d5 Rxd5+ (50...
Ba4 {Ftacnik} 51. bxa5 bxa5 52. d6 $16) 51. Rxd5 Bxd5 52. bxa5 $4 {# throwing
away the win.} (52. Kxd5 Kf4 (52... axb4 53. Ke4 Kh4 54. Kf4 $18) (52... a4 53.
b5 Kf4 54. Ra3 g3 55. Rxa4+ $18 Kf3 56. Kc6 g2 57. Ra1) 53. Re1 $1 (53. Re4+ {
Ernst} Kf3 $10) (53. Re6 {Hecht} Kf3 $2 (53... g3 $1 54. Rxb6 (54. b5 g2 55.
Rg6 Kf3 56. Kc6 a4 57. Kxb6 a3 58. Rf6+ Ke2 59. Re6+ Kf2 60. Rf6+ Kg1 61. Kc7
a2 62. Ra6 $10) 54... axb4 (54... a4 55. Rc6 g2 56. Rc1 Ke3 57. b5 Kf2 58. b6
$18) 55. Kd4 g2 56. Rg6 Kf3 57. Kd3 Kf2 58. Rf6+ Ke1 $10) 54. b5 $1 g3 55. Rxb6
g2 56. Rg6 a4 57. Kc4 $18) 53... axb4 $8 (53... Kf3 54. b5 $1 g3 55. Kc6 g2 56.
Kxb6 Kf2 57. Ra1 a4 58. Ka5 $1 $18 (58. Ka5 {Ftacnik} a3 59. Ra2+ (59. Ka4 $18
{Boensch}) 59... Kf1 60. Rxa3 g1=Q 61. Ra1+ $18)) 54. Kd4 $1 Kf3 (54... g3 55.
Rf1+ Kg4 56. Ke3 g2 57. Rg1 Kg3 58. Rb1 Kh2 59. Kf2) 55. Kd3 $1 g3 (55... Kf2
56. Re2+ $1 Kf3 (56... Kf1 57. Ke3 g3 58. Kf3) 57. Re6 g3 58. Rf6+ Kg2 59. Ke2)
56. Rf1+ Kg2 57. Ke2 Kh2 58. Rb1 g2 59. Kf2 {And the Black have been blockaded
and will shortly run out of moves.} (59. Kf2 b3 60. Rg1 $18)) 52... bxa5 53.
Kxd5 Kf4 54. Ra3 (54. Re8 {Boensch} g3 55. Rf8+ Ke3 $10 (55... Kg4 $2 56. Ke4
g2 57. Rg8+ Kh3 58. Kf3 $18)) 1/2-1/2

The game Adams - Kramnik had a strong impact on this line.
  

The older, the better - over 2200 and still rising.
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kylemeister
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Re: Classical Sicilian: where to begin?
Reply #39 - 05/10/13 at 14:48:21
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Scarblac wrote on 05/07/13 at 14:25:36:
And is there any specific theoretical problem with 6.Bg5 e6 7.Qd2 Be7 8.0-0-0 0-0, or is it just considered slightly better for white in general?

That line has always seemed obviously correct to me (what can possibly be wrong with straightforward development?), but of course chess isn't such a simple game.


I can't claim to be up on the most recent tries, but some time ago I became accustomed to seeing it considered as falling into the "+= with best play" category.  I notice that Wang Hao is playing (via an alternative move order) one of the old main sublines (9. f4 Nxd4 plus ...Qa5 and ...Bd7-c6) today against Karjakin.
  
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Re: Classical Sicilian: where to begin?
Reply #38 - 05/07/13 at 14:25:36
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And is there any specific theoretical problem with 6.Bg5 e6 7.Qd2 Be7 8.0-0-0 0-0, or is it just considered slightly better for white in general?

That line has always seemed obviously correct to me (what can possibly be wrong with straightforward development?), but of course chess isn't such a simple game.
  
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gramsci
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Re: Classical Sicilian: where to begin?
Reply #37 - 05/07/13 at 14:17:30
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gewgaw wrote on 05/06/13 at 18:34:04:
There must be a reason why the classical sicilian isn´t so popular nowadays. What´s the prob after 8. ...Bd7?

9.f3!
  
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Re: Classical Sicilian: where to begin?
Reply #36 - 05/06/13 at 18:34:04
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There must be a reason why the classical sicilian isn´t so popular nowadays. What´s the prob after 8. ...Bd7?
  

The older, the better - over 2200 and still rising.
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Re: Classical Sicilian: where to begin?
Reply #35 - 05/06/13 at 15:01:51
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Reminds me of Edmar Mednis writing in the 1990s (when 8...h6 was all the rage) something to the effect that the protruding h-pawn made him uneasy, and so he was sticking with the old 8...Bd7.
  
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Re: Classical Sicilian: where to begin?
Reply #34 - 05/06/13 at 13:53:44
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@leeRoth,

thanks for your contribution.
I checked your lines and you are right. Of course there are other variations like your 13. ...Nh7, 14. ...Qc7, 15. ...Kg8, but the weakness h6 still remains, so I understand why 8. ...Bd7 is the new mainline.
  

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Re: Classical Sicilian: where to begin?
Reply #33 - 05/05/13 at 16:51:02
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I'll give it a try. 

If I'm following the proposed analysis in the 12.Be2 line, the suggestion for Black is: 9.Nxc6 bxc6 10.Bf4 d5 11.Qe3 Bb4 12.Be2 0-0 13.e5 Nd7 14.Qg3 Kh8 15.Qh3 Be7 16.Bxh6 gxh6 17.Qxh6 Kg8 18.h4 Nxe5 19.Ne4 f5 20.Rh3.

If I have this wrong, please let me know.  But, if not, we get to this position:

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

This is not a position I'd want to play as Black.  As best I can tell 20..f4 is pretty much forced, otherwise White gets in Rg3+ with a winning position. 

(For example, 20..Bf6 21.Rg3+ Kf7 22.Bh5+ Ke7 23.Nxf6 +-; 20... Bd6 21.Rg3+ Ng4 22.Nxd6 Qxd6 23.Bxg4 fxg4 24.Qg6+ Kh8 25.Rd4! +-)

21.Ng5 Rf7

(Also forced.  21..Bxg5 22.hxg5 is obviously bad)

22.Nxf7 Nxf7 23.Qg6+ Kf8 24.Bh5 Qe8

(What else?  After 24... Nh8 25.Qh6+ Kg8 26.Qxf4 Black won't survive)

25.Rf3 Bd6

(25... e5 is met by 26.Re1 +-)

26.g3 Qe7

(Maybe there's a better try here, but I haven't found it.  If 26... e5 27.gxf4 exf4 (27..e4 28.f5 Ke7 (28..Ra7 29.f6 Qe6 30.Rg1 Ke8 31.Rc3 +-; 28..exf3 29.f6 +-)  29.Rb3 Be5 30.Rb6 Bd7 31.Rb7 Kd8 32.Qxf7 Qxf7 33. Bxf7 +-) 28. Rg1 +-)

27.gxf4 Nh8

(27..Ra7 28. Rg1 +-)

28. Qh6+ Qg7 29. Qg5 +/-

It looks to me and my engine that White keeps a sizable advantage here. 

Perhaps 13..Nh7 is a better try.


 
  
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Lauri Torni
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Re: Classical Sicilian: where to begin?
Reply #32 - 04/27/13 at 19:36:28
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tony37 wrote on 04/26/13 at 22:02:06:
maybe this will help (some comments have been lost but I think it's a bit more readable)



Thanks! Awfully complex. I do not know what to think about it...
  

1.Nf3! -  beat your opponent by killing his zest for life.
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Re: Classical Sicilian: where to begin?
Reply #31 - 04/26/13 at 22:02:06
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maybe this will help (some comments have been lost but I think it's a bit more readable)

« Last Edit: 04/27/13 at 10:56:17 by tony37 »  
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Re: Classical Sicilian: where to begin?
Reply #30 - 04/26/13 at 18:39:05
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Lauri Torni wrote on 04/25/13 at 09:25:30:
I used to play 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.0–0–0 h6 but gave it up due to  9.Nxc6 bxc6 10.Bf4.

If you can make it work for black, I will consider taking the classical back to business.

Are there other critical lines at the moment in the classical? What is the status of 6.Bc4, e.g? How about 6.f3?


Well, analyse my stuff Smiley; if this line is fixed, then we can analyse other lines.
  

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Re: Classical Sicilian: where to begin?
Reply #29 - 04/25/13 at 09:25:30
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I used to play 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.0–0–0 h6 but gave it up due to  9.Nxc6 bxc6 10.Bf4.

If you can make it work for black, I will consider taking the classical back to business.

Are there other critical lines at the moment in the classical? What is the status of 6.Bc4, e.g? How about 6.f3?
  

1.Nf3! -  beat your opponent by killing his zest for life.
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Re: Classical Sicilian: where to begin?
Reply #28 - 04/25/13 at 06:48:32
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Especially for Bibs...because of his age.   Roll Eyes
And I couldn't pick up the analysis lines, maybe...because of my age...  Grin
  
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Re: Classical Sicilian: where to begin?
Reply #27 - 04/25/13 at 05:17:22
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Perhaps this may be possible with a diagram, with pgn?
May be my age, but I get terribly lost in such a format.
  
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Re: Classical Sicilian: where to begin?
Reply #26 - 04/24/13 at 22:08:34
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All theory books call the line with 9.Nxc6 as a heavy challenge for Black and for sure it´s not so easy to play for Black, but it seems he has good chances, especially after the less known 16. ...f5:

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.0–0–0 h6 9.Nxc6 bxc6 10.Bf4 d5 11.Qe3 Bb4!? 12.a3 [12.Be2 0–0 13.e5 Nd7 14.Qg3 Kh8 15.Qh3 Be7 (15...Kg8) 16.Bxh6 gxh6 17.Qxh6+ Kg8 18.h4 Nxe5 19.Ne4 (19.Rd3 Nxd3+ 20.Bxd3 f5 21.Qg6+ Kh8 22.Qh6+ Kg8 23.Qg6+; 19.f4 Qc7 20.fxe5 Qxe5) 19...f5 20.Rh3 (20.f4 Rf7 21.Ng5 Rg7 22.Nxe6 Bxe6 23.Qxe6+ Nf7 24.Qxc6 Qe8 25.Qxe8+ Rxe8 26.Rxd5 Rxg2 27.Bxa6 Ra8 28.Bc4 Ra4 29.Bb3 Rxf4 30.a4 Rg6 31.h5 Ra6 32.a5 Kg7 33.c3; 20.Ng5 Rf7 21.Nxf7 Nxf7 22.Qg6+ Kf8 23.Bh5 Nd6 24.c4 Ra7 25.c5 Bxh4 26.Rxh4 Rg7 27.Qh6 Qxh4 28.Qh8+ Rg8 29.Qh6+ Ke7 30.Qh7+ Kf8 31.Qh6+ Ke7) ] 12...Ba5 13.Be2 [13.exd5 cxd5 14.Be2 0–0 15.g4 Houdini 1.5 w32: 1) 15...Re8 (Houdini 1.5 w32: 2) 15...Bb7 16.g5 Bxc3 17.gxf6 Bxf6 18.Rhg1 Re8 19.Bxh6 Kf8 20.Bg5 e5 21.h4 Re6 22.Qd3 e4 23.Qe3 Rb6 24.c3 Rb8 25.Bf4 Rc8 26.Bg4 0.00/24 ; Houdini 1.5 w32: 3) 15...Bd7 16.Rhg1 Qb6 17.g5 Qxe3+ 18.fxe3 hxg5 19.Bxg5 Bxc3 20.bxc3 Ne4 21.Bh6 g6 22.Bxf8 Nxc3 23.Rde1 Kxf8 24.Bd3 Bb5 25.Kd2 Rc8 26.e4 dxe4 27.Bxe4 Na4 28.Bd3 Rd8 29.Rg3 Ke7 30.Rh3 Nc5 0.16/24 ) 16.g5 Bxc3 17.Qxc3 Ne4 18.Qe5 hxg5 19.Be3 f6 20.Qd4 Nd6 21.Bh5 Nf5 22.Qd3 Re7 23.h4 Nxe3 24.fxe3 g4 25.Bxg4 a5 26.Kb1 Qc7 27.Rhg1 Ba6 28.Qd2 -0.22/24 ] 13...0–0 14.e5 Nd7 15.Qg3 [15.Bxh6 Houdini 1.5 w32: 1) 15...gxh6 (Houdini 1.5 w32: 2) 15...Bxc3 16.Bxg7 Kxg7 17.Qg3+ Kh8 18.Qh3+ Kg7 19.Qg3+ Kh8 0.00/12 ; Houdini 1.5 w32: 3) 15...f6 16.exf6 Nxf6 17.Bf4 Bc7 18.Bxc7 Qxc7 19.f4 c5 20.Qe5 Qxe5 21.fxe5 Nd7 22.Rhe1 Nxe5 23.Bxa6 Rxa6 24.Rxe5 Rf2 25.g3 Ra5 26.h4 Rf3 27.Re2 Bd7 28.Rd3 Rf1+ 29.Kd2 Kf7 0.46/21 ) 16.Qxh6 Nxe5 17.Rd3 Nxd3+ 18.Bxd3 f5 19.Qg6+ Kh8 20.Qh6+ Kg8 21.Qg6+ 0.00/14 ] 15...Bc7 16.Bd3 [16.Bxh6 Bxe5 17.f4 Bf6=; 16.Kb1 Houdini 1.5 w32: 1) 16...Qe7 (Houdini 1.5 w32: 2) 16...Rb8 17.Na4 Qe7 18.Rhe1 Re8 19.Bh5 Kh8 20.Bd2 a5 21.Qc3 c5 22.f4 d4 23.Qd3 -0.27/21 ; Houdini 1.5 w32: 3) 16...Kh8 17.Na4 c5 18.c4 d4 19.Bd3 Qe7 20.Rhe1 Rd8 21.Qh3 Kg8 22.Qg3 Kf8 23.Bc2 Rb8 24.Qd3 g5 25.Qh7 Ke8 26.Qh8+ Qf8 27.Qxf8+ Kxf8 -0.19/21 ) 17.Bd3 Rb8 18.Na4 Kh8 19.Qh3 f6 20.exf6 Nxf6 21.Bxc7 Qxc7 22.Qe3 e5 23.f3 d4 24.Qd2 Nd5 25.Rde1 Bf5 26.Nc5 Qe7 -0.28/21 ] 16...f5 17.Rhe1 [17.Kb1 Rb8³ (Houdini 1.5 w32: 1) 17...Kh8 18.h4 Rb8 19.Be2 c5 20.Ka1 Bb7 21.Nb1 c4 22.Nd2 Qe7 23.Bg5 Qf7 24.Bf4 Bc6 25.h5 Ba4 26.Qc3 Bb6 27.Bg3 Bc6 28.Nb3 f4 -0.40/21 ; Houdini 1.5 w32: 2) 17...Rb8 18.Be2 Kh8 19.h4 c5 20.Ka1 Bb7 21.Nb1 c4 22.Nd2 Qe7 23.Bg5 Qf7 24.Bf4 Bc6 25.h5 Ba4 26.Qc3 Bb6 27.Bg3 Bc6 28.Nb3 f4 -0.40/21 ; Houdini 1.5 w32: 3) 17...Qe7 18.Rhe1 Kh7 19.Ka1 Rb8 20.Bc1 c5 21.f4 Bb7 22.Nb1 Kg8 23.Be2 Bc6 24.h3 a5 25.Bh5 Kh8 26.Nd2 c4 -0.33/21 ) ; Houdini 1.5 w32: 1) 17.Rhe1 Qe7 18.Bxh6 Bxe5 19.Bf4 Bxf4+ 20.Qxf4 e5 21.h4 Rf6 22.h5 Rb8 23.Qg3 Qf7 24.Be2 Rh6 25.Na4 Qe7 26.Kb1 Nf6 27.Ka1 Ne4 -0.25/24 ; Houdini 1.5 w32: 2) 17.Na4 Kh8 18.Rhe1 c5 19.Qg6 Qe8 20.Qxe8 Rxe8 21.b3 Bb7 22.h4 Kg8 23.Nb2 Rab8 24.Bf1 Bc6 25.Kb1 Bb5 26.Bxb5 axb5 27.Nd3 c4 -0.27/24 ; Houdini 1.5 w32: 3) 17.exf6 Bxf4+ 18.Qxf4 Nxf6 19.Qb4 Qc7 20.Qc5 e5 21.f3 Be6 22.a4 Nd7 23.Qe7 Rae8 24.Qa3 Bf5 25.Bxa6 Rb8 26.Rd2 Qa5 27.Bd3 Bxd3 28.Rxd3 Rb4 29.Re1 d4 30.Rdd1 Nc5 31.Ne4 Nxe4 -0.35/24 ] 17...Kh8 [17...Qe7 18.Bxh6 Bxe5 19.Bf4 Bxf4+ 20.Qxf4=] 18.Qh3 Kg8 [18...Qe7 19.g4] 19.g4 Nc5 [19...Qe7 20.gxf5 exf5 21.Bxh6 Nxe5 22.f4 Nxd3+ 23.cxd3] 20.Rg1² Nxd3+? [20...Rf7 21.gxf5 exf5 (21...Nxd3 22.Rxd3 (22.Qxd3?! Rxf5 23.Bxh6 Bxe5) 22...Rxf5 23.Rdg3+-) 22.Qxh6 Qe7±] 21.Rxd3+- [21.Qxd3 Qh4 22.f3 a5=] 21...fxg4?? [21...Ra7 22.g5 hxg5 23.Bxg5 Qd7+-] 22.Qxg4 Qe7 [22...Bxe5 23.Bxe5 Qg5+ 24.Qxg5 hxg5 25.Rxg5+-] 23.Rh3 Rf5 [23...Rxf4 24.Qxf4 Kh7+-] 24.Rxh6 Bxe5 [24...Bd7 25.Qh3 Bxe5 26.Bxe5 Rxe5 27.Rh8+ Kf7 28.Rxa8 Rg5 29.Qf3+ Kg6 30.Rxg5+ Qxg5+ 31.Qe3 Qf6 32.Rxa6 Qf5+-] 25.Bxe5 Rxe5 26.Qg6 Qf8 27.Qh7+ Kf7 28.Rhg6 Ke7 29.Rxg7+ Kd6 30.Rf7 Qd8?? [30...Qe8 31.Rg8 Re1+ 32.Kd2 Re3 33.Rxe8 Rxc3 34.Qg7 c5 35.Rc7 Bd7 36.Rxd7+ Kc6 37.Rb7 Rxc2+ 38.Kxc2 Rxe8 39.Qc7#] 31.Rg8 Qb6 32.Qg7 Rf5 33.Qf8+ Ke5 34.Rxf5+ exf5 35.f4+! Kd4 [35...Kxf4 36.Qd6+] 36.Qf6+ Ke3 [36...Kc5 37.Qe7+ Kd4 38.Ne2+ Kc4 39.b3+ Qxb3 40.cxb3+ Kxb3 41.Qb4+ Ka2 42.Qb2#] 37.Qe5+ Kf3 38.Rg3+ Kf2 39.Qe2# 1–0


  

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