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Normal Topic Avrukh's Benko can be move-ordered? (Read 4781 times)
Ludde
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Re: Avrukh's Benko can be move-ordered?
Reply #3 - 04/07/11 at 06:43:28
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Ametanoitos wrote on 05/11/10 at 12:04:17:
{Now we are back in the 9...Ba6 10.0-0 Nb6 line, where it's not so easy to prove an
edge for White.}


In how good health is the Benko here? practical results seem fine, but does anyone know the theoretical status? Another thought is: can black even improve this by choosing for even longer between Bxa6 and Rxa6? If pressure on d5 is of importance it could make sense to make room for the queen on a8 while waiting for another move to decide where to place the bishop.
There are also the lines where black takes with the knight on a6 and play Bf5, first promoted by Kazimdzhanov. Avrukh handles this rather superficially by stating that white should kick the bishop on f5 with Nh4 immediately but doesn't really give any lines or analysis in depth (in contrast to how he handles most other variations).
  
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Re: Avrukh's Benko can be move-ordered?
Reply #2 - 05/12/10 at 02:27:22
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This is mostly interesting for KID and GID-players. If Black wants to play the Benkö proper it is not really a relief because of 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 d6 6.e4!?
After 1.d4 Nf6 2.c4 g6 3.g3 I cannot see any particular problems with the move order as long as Black remembers to play a timely ...d6 to prevent d5-d6 ideas. Of course White can play an English by refusing to push the d-pawn: 1.d4 Nf6 2.c4 g6 3.g3 c5 4.Nf3 Bg7 5.Bg2 0-0 6.Nc3 or 6.0-0 and now Black will not reach the Benkö anymore.
Still it looks like a few players of the white side have a gap in their repertoire. And in the past there have been a few questions like "What to play against the KID-counterfianchetto?"
  

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Ametanoitos
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Re: Avrukh's Benko can be move-ordered?
Reply #1 - 05/11/10 at 12:10:53
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When i said "modern-fianchetto line" i meant 1.d4 g6 2.c4 Bg7 3.g3 c5 4.d5 be etc....Also, if White plays Rb1 GM Stohl says: "10. Rb1 {now makes no sense due to} Bf5" and here there is the old (from 1996)game:

[White "Pavlovic, Milos"]
[Black "Nikolaidis, Ioannis"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "2490"]
[BlackElo "2530"]
[PlyCount "88"]

1. d4 Nf6 2. c4 g6 3. g3 c5 4. d5 b5 5. cxb5 a6 6. bxa6 d6 7. Nc3 Bg7 8. Bg2 Nbd7 9. Rb1 O-O 10. Nf3 Nb6 11. O-O Bf5 12. Ra1 Ne4 13. Nxe4 Bxe4 14.Nh4 Bxg215. Nxg2 Rxa6 16. Nf4 Qa8
(Black is already better) and the game continued...

17. a3 Rb8 18. Rb1 Na4 19. Qc2 Rab6 20. b4 Nc3 21.
Rb3 Nxd5 22. Nxd5 Qxd5 23. Be3 c4 24. Rbb1 R6b7 25. Bd2 c3 26. Bxc3 Qc4 27.Rfc1 Rc8 28. Qd1 Bxc3 29. Rb3 Rbc7 30. Rbxc3 Qxc3 31. Rxc3 Rxc3 32. Qa4 Rc2 33.Qa6 R8c4 34. b5 Rxe2 35. b6 Rc1+ 36. Kg2 Rb2 37. a4 Rcc2 38. Kf3 Rxf2+ 39. Ke3
Rfc2 40. Qd3 Rc5 41. Qa6 Rc3+ 42. Kd4 Rbc2 43. b7 e5+ 44. Kd5 Rb2 0-1

  
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Ametanoitos
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Avrukh's Benko can be move-ordered?
05/11/10 at 12:04:17
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Please pay attention to the comments made by GM Stohl in the following game:

[Event "EU-ch 4th"]
[Site "Istanbul"]
[Date "2003.06.01"]
[Round "3"]
[White "Tkachiev, Vladislav"]
[Black "Izoria, Zviad"]
[Result "1-0"]
[ECO "A58"]
[WhiteElo "2643"]
[BlackElo "2569"]
[Annotator "Stohl"]
[PlyCount "109"]
[EventDate "2003.05.30"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "TUR"]
[Source "ChessBase"]
[SourceDate "2003.09.25"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 c5 5. d5 b5 6. cxb5 a6 7. bxa6 d6 8. Bg2 Nbd7 9. Nc3 Nb6
{Quite a clever move order, it's point is to avoid the line}
(9... Bxa6 10. Rb1!
{, which has lately been causing Black quite a lot of trouble})

10. O-O

(10. Rb1 {now makes no sense due to} Bf5) 10... Bxa6
{Now we are back in the 9...Ba6 10.0-0 Nb6 line, where it's not so easy to prove an
edge for White.} )

.....

So, can we use this move order trick to avoid the Epishin Variation? We can do this in the modern-fianchetto line for sure, avoiding Avrukh's analysis there (he doesn't consider this powerfull imo option in his book) but can we do the same in the Benko move order? Maybe this is food for thought.
  
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