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Normal Topic Current status of 5...c5 (Read 384 times)
Cyberangel
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Re: Current status of 5...c5
Reply #4 - 04/30/25 at 13:05:37
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Or another idea:
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 c5 6. d5 exd5 7. cxd5 g6 8. Bg2 Bg7 9. Bb2 O-O 10. O-O Re8 11. Re1 d6

You have a very similar position that you were aiming for without most of the downsides.
  
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MNb
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Re: Current status of 5...c5
Reply #3 - 04/30/25 at 06:17:04
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nocteus wrote on 04/29/25 at 20:45:40:
All right. Sad news. I'll have to find another solution if it exists.

You might be interested in 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 c5 as in eg Andreikin-Oparin, internet 2024. The gambit idea 7.d5 is less dangerous here: Elianov-Shugirov, Budapest 2024.
  

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nocteus
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Re: Current status of 5...c5
Reply #2 - 04/29/25 at 20:45:40
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All right. Sad news. I'll have to find another solution if it exists.
  
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Cyberangel
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Re: Current status of 5...c5
Reply #1 - 04/27/25 at 18:28:56
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I don't play QID anymore so take my opinion with a grain of salt but this variation seems to do even worse than it used to be.

The critical line from the past has been 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. d5 exd5 7. Nh4 but according to the Megabase 2025 the much more testing 7.cxd5 gained some traction recently. It is over 62% scoring for White and the engine seems to like it very much. Play might continue:
7.cxd5 Bxd5 8.Nc3 Bc6 9.e4

Now the majority of people seems to play 9...d6? 10.Nh4! Be7 (g6 11.0-0 Bg7 12.Bf4 and White gets back the pawn with a commanding initiative) 11.Nf5 0-0 12.Bf4 Ne8 13.Qd2 Na6 14.0-0-0 and White gets the pawn back while Black is absolutely cramped.

Black might also try to grab another pawn with: 9...Nxe4? 10.Nxe4 Bxe4 11.Qe2 Qe7 12.0-0 Nc6 (Bc6 13.Qd1! and probably Black will have to give a piece in one of the many subvariations) 13.Bf4 Bd5 14.Qa6 Qd8 and Black has some serious problems for the 2 pawns.

It seems the most accurate is 9...Be7 10.Nh4 0-0 11.0-0 d6 12.Nf5 Nbd7 13.Nxd6 after which White gets back the pawn and has a very comfortable position. Black could try to hold the pawn with 12...Ne8 13.Bf4 Na6 but it seems like White will get a very strong attack with 14.Qg4 and following up with Rfd1 for example.

All in all, I would stay away from this line unless you want to gamble that your opponent is afraid to play 6.d5 or doesn't know the theory after what Black seems to be OK.
  
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nocteus
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Current status of 5...c5
04/27/25 at 17:51:51
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Hi there,
I'd like to know the current theoretical status of the line 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 It used to be marked as dubious. Is it still the case or is it viable?

I wondered whether I could use this move order to try and reach this sort of structure, that I really love (playing the Nimzo and Kan/Taimanov). 
I know there is the Polugaevsky type gambit 6...d5, yet why not.

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Thanks!
  
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