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Normal Topic 9.000 d5 10.Kb1 (Read 4651 times)
Paul Hopwood
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Re: 9.000 d5 10.Kb1
Reply #6 - 03/27/04 at 10:26:46
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In the line given by da Costa Junior, 19...Rb4! 20 b3 a5! seems a sizeable improvement
  
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Glenn Snow
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Re: 9.000 d5 10.Kb1
Reply #5 - 03/19/04 at 20:35:57
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Well I had thought that (10.exd5) was strongest as well, but you might want to take a look at Da Costa Junior's post under the heading "new main line in 9.000 d5".
  
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KingDan
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Re: 9.000 d5 10.Kb1
Reply #4 - 03/19/04 at 19:14:00
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This is not where white is struggling for advantage. I believe black is ok after sacking the queen for rook and minor. however, d5 exd5 nxd5 nxc6 bxc6 bd4 e5 bc5 be6 ne4  is why most gms don't play this anymore. There are other ways to play, such as nxc3 qxc3 bh6+ and some other tries, but I think they are not enough to equalize.
  
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Da Costa Junior
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Re: 9.000 d5 10.Kb1
Reply #3 - 03/19/04 at 18:20:53
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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 9.0-0-0 d5 10.Kb1 Nxd4 11.e5 Nf5 12.exf6 Bxf6 13.Nxd5 Qxd5 14.Qxd5 Nxe3 15.Qd2 Nxd1 16.Qxd1 Be6 17.Bd3 Rfd8 18.Qe2 Rd4 19.h4 Rad8 20.h5 and white stands slightly better (Stativkin - Pashikian, Moscow 2002) Small ECO, 2nd edition, 2003.
  
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Glenn Snow
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Re: 9.000 d5 10.Kb1
Reply #2 - 03/19/04 at 15:18:47
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What is White's way to advantage after:

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6 8.Qd2 0-0 9.0-0-0 d5 10.Kb1 Nxd4 11.e5 Nf5 (one of the main lines you mentioned) 12.exf6 Bxf6 13.Nxd5 Qxd5 the queen sac line?
  
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Da Costa Junior
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Re: 9.000 d5 10.Kb1
Reply #1 - 03/19/04 at 11:57:02
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The main line 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 9.0-0-0 d5 10.Kb1 Nxd4 ('book' move) and after 11.e5 black has two options 11...Nxf3 and 11...Nf5 but not enough to equalize the position (Small ECO, 2nd edition, 2003).

I think 10...Rb8!? is an interesting idea and I played one game in the line 11.g4 e5 but I think white has two good options: 11. h4!? and 11.Ndb5!? and it's not easy to equalize the position.

10.Kb1 may become the main line for white to play against 9.0-0-0 d5




[Event "EM/J50/Q16"]
[Site "ICCF"]
[Date "2003.10.20"]
[Round "?"]
[White "Mühlenweg, Heinz"]
[Black "Da Costa Junior, Luiz Roberto"]
[Result "1/2-1/2"]
[ECO "B76"]
[WhiteElo "??"]
[BlackElo "??"]
[PlyCount "60"]
[EventDate "2003.??.??"]
[SourceDate "2003.10.30"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2
Nc6 9. O-O-O d5 10. Kb1 Rb8 11. g4 e5 12. Nxc6 bxc6 13. Bc5 d4 14. Bxf8 Qxf8
15. Ne2 Qa3 16. b3 Be6 17. Qc1 Qd6 18. h4 a5 19. Ka1 Nd7 20. g5 a4 21. Qd2 axb3
22. cxb3 Qa3 23. Rb1 Nc5 24. Nc1 Bf8 25. Qc2 Nxb3+ 26. Rxb3 Bxb3 27. Nxb3 Rxb3
28. Qxb3 Qc1+ 29. Qb1 Qc3+ 30. Qb2 Qe1+ 1/2-1/2
  
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Glenn Snow
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9.000 d5 10.Kb1
03/19/04 at 00:58:15
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Does anyone know what the most effective antidote for Black versus 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6 8.Qd2 0-0 9.0-0-0 d5 10.Kb1 is?
  
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