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Normal Topic Avoiding the Pawn Sac Line 5.Qc2 c5 6.d5 (Read 413 times)
BobbyDigital80
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Re: Avoiding the Pawn Sac Line 5.Qc2 c5 6.d5
Reply #4 - 02/08/20 at 09:58:32
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mn wrote on 02/07/20 at 22:28:06:
This line is recommended in Greet's "Play the Queen's Indian". Personally, I don't like the 7 e4 line much for Black, but it's definitely playable (if a bit better for White). 7 Bg2 is supposed to transpose directly into a line of the Catalan, I think. Worth noting that Greet went for 5 Qc2 Bb4+, but not 5 b3 Bb4+ (5...b5).


Yeah, that's strange to recommend 5...b5 in that line if he recommends 5.Qc2 Bb4+. If White plays 6.Bd2 Be7 7.Bg2, that position is so similar to the main line with 5.b3 Bb4+.
« Last Edit: 02/08/20 at 12:23:25 by BobbyDigital80 »  
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Straggler
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Re: Avoiding the Pawn Sac Line 5.Qc2 c5 6.d5
Reply #3 - 02/08/20 at 09:16:09
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On his ChessBase DVD, Bologan says that after 5...Bb4+ 6.Bd2 you have to take on d2. He doesn't say what's wrong with 6...Be7, but I assume it's 7.e4 he doesn't like. Nor do I.
  
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mn
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Re: Avoiding the Pawn Sac Line 5.Qc2 c5 6.d5
Reply #2 - 02/07/20 at 22:28:06
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This line is recommended in Greet's "Play the Queen's Indian". Personally, I don't like the 7 e4 line much for Black, but it's definitely playable (if a bit better for White). 7 Bg2 is supposed to transpose directly into a line of the Catalan, I think. Worth noting that Greet went for 5 Qc2 Bb4+, but not 5 b3 Bb4+ (5...b5).
  
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an ordinary chessplayer
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Re: Avoiding the Pawn Sac Line 5.Qc2 c5 6.d5
Reply #1 - 02/07/20 at 20:17:04
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Yrjölä / Tella (2003) The Queen's Indian gives 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qc2 Bb4+ as the best alternative to 5...c5. But they don't consider 6.Bd2 at all, only 6.Nbd2 transposing to 5.Nbd2 Bb4 6.Qc2.

This book looks hopelessly outdated. For example they give 5.Qc2 c5 6.d5?! only one citation -- Crawley - Kohlweyer, Groningen 1988 (=+). But since I don't play the QID for either color, I only have the one book.
  
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BobbyDigital80
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Avoiding the Pawn Sac Line 5.Qc2 c5 6.d5
02/07/20 at 05:28:26
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I’ve been looking at different ways of playing against 5.Qc2 in the 4.g3 QID and how to avoid the pawn sac line, 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qc2 c5 6.d5. I was looking at the line where Black checks on b4 which can lead to 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qc2 Bb4+ 6.Bd2 Be7 7.e4 d5 8.cxd5 Bxf1 9.Kxf1 exd5 10.e5 Ne4 11.Nc3, which might be White’s best, but I was wondering what would happen if White plays 7.Bg2 instead, and it looks like it might transpose to the main line 4. g3/5.b3 QID if White plays b3 in this line: 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qc2 Bb4+ 6.Bd2 Be7 7.Bg2 O-O 8.O-O c6 9.b3. I’m not sure if this is considered a QID or a Catalan. If White’s Queen were on d1 then he could’ve played Bc3, which could lead to the old main line of the QID that runs 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5. I’m pretty sure that in the above line if White plays 9.Bf4 instead of 9.b3, then that’s a main line Catalan.

Nowadays the new main line against the 4.g3/5.b3 QID is to delay …c6 and just play …d5 right away: 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 O-O 8.O-O d5

I was wondering if it was possible to play this way against the 4.g3/5.Qc2 line, which would be 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qc2 Bb4+ 6.Bd2 Be7 7.Bg2 O-O 8.O-O d5. Is this line sound for black? The only difference between this line and the previous line I mentioned with 4.g3 is that White’s queen is on c2 and b pawn is still on b2. Does this make any difference to the evaluation of the position? I imagine in this line white can just play 9.cxd5 and this would lead to a better position than in the 5.b3 line, but I’m not sure how much better. Maybe without the pawn on b3, White can play Qa4 in some lines which would attack the bishop on a6 and maybe restrict Black’s development. I was wondering how good this line is for black. I thought it might be easier for Black if he tries to the avoid the pawn sac line 5.Qc2 c5 6.d5 and instead tries to transpose to the main line 4.g3/b3 QID. This method seems fine for black if he plays an early …c6 which leads to main lines in the QID or Catalan, but what about avoiding …c6 and playing …d5 straight away, in order to be consistent with a repertoire that includes playing this way against the 4.g3/5.b3 main line?
« Last Edit: 02/07/20 at 08:36:51 by BobbyDigital80 »  
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