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Hot Topic (More than 10 Replies) Transpositions in the various QG lines (Read 13941 times)
kylemeister
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Re: Transpositions in the various QG lines
Reply #21 - 09/08/06 at 19:42:05
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The thing I was thinking about is in YB 60 (about 5 years ago).  Sosonko thinks White can improve with 20. Ng5 on the game below.  He also discusses 12...Qb6 ("here too I think White can cause some problems") ...



[Event "Erevan ch-URS"]
[Site ""]
[Date "1975.??.??"]
[Round "3"]
[White "Alburt, Lev Osipovich"]
[Black "Furman, Semyon Abramovich"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2560"]
[NIC "EO 45.9"]
[ECO "A32"]
[PlyCount "70"]

1. Nf3 c5 2. c4 Nf6 3. d4 cxd4 4. Nxd4 e6 5. g3 d5 6. Bg2 e5 7. Nf3 d4 8. O-O Nc6 
9. e3 Be7 10. exd4 exd4 11. Bf4 O-O 12. Ne5 Nxe5 13. Bxe5 Bc5 14. Nd2 Re8 15. Re1 
Ng4 16. Bf4 Rxe1  17. Qxe1 d3 18. Ne4 Bd4 19. h3 Ne5 20. Rd1 Nxc4 21. Rxd3 Nxb2 22. 
Rd2 Nc4 23. Rd1 Nb2 24. Rd2 Nc4 25. Re2 Bf5 26. Qb4 Rc8 27. Qxb7 h6 28. Nd2 Bd3 29. 
Re7 Nxd2 30. Bxd2 Rb8 31. Rd7 Qe8 32. Qd5 Bb5 33. Rxf7 Qxf7 34. Qxd4 Bc4 35. a4 Be6 
1/2-1/2

By the way, I would find it hard to believe that (1. d4 Nf6 2. c4 e6 3. g3 c5) 4. dc Bxc5 5. Nf3 poses any problems for Black.  What's wrong with playing simply, such as 5...d5 or 5...0-0 and 6...d5?  It would seem that Black could end up with a Tarrasch with an extra tempo, or a completely acceptable Tarrasch-like position (e.g. if White plays Nbd2 and Nb3) ...  
  
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Markovich
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Re: Transpositions in the various QG lines
Reply #20 - 09/08/06 at 11:47:31
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kylemeister wrote on 09/06/06 at 18:00:04:
The last time this came up, I think I mentioned my somewhat vague recollection of seeing something on it in an NIC Yearbook (Sosonko's Corner, I believe).  I'm thinking it may have been one particular line with 7. Nf3 that GM Genna said he thinks is more promising for White than is generally portrayed in the books.  I haven't been able to find it yet, though.  I wonder if Markovich knows what I'm talking about. 


One thing I do remember is that not too long ago, Sosonko opined that after 1. d4 Nf6  2. c4 e6  3. g3 c5  4. Nf3 cxd5  5. Nxd5 a6  6. Bg2 Qc7, the move 7. Nd2 was a better way to play for the advantage than to sac the c-pawn.  But most books already say that 7. Nd2 is +=.  In a practical setting, I might well sac the c-pawn, however.
  

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Re: Transpositions in the various QG lines
Reply #19 - 09/07/06 at 06:11:07
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Thanks guys, that really helped to make sense of it all.
  

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Markovich
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Re: Transpositions in the various QG lines
Reply #18 - 09/06/06 at 18:10:53
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kylemeister wrote on 09/06/06 at 18:00:04:
The last time this came up, I think I mentioned my somewhat vague recollection of seeing something on it in an NIC Yearbook (Sosonko's Corner, I believe).  I'm thinking it may have been one particular line with 7. Nf3 that GM Genna said he thinks is more promising for White than is generally portrayed in the books.  I haven't been able to find it yet, though.  I wonder if Markovich knows what I'm talking about. 


Not off the top of my head, but since I have all of these back to YB 7, I'll check and come back -- most likely on another thread.
  

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Re: Transpositions in the various QG lines
Reply #17 - 09/06/06 at 18:00:04
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The last time this came up, I think I mentioned my somewhat vague recollection of seeing something on it in an NIC Yearbook (Sosonko's Corner, I believe).  I'm thinking it may have been one particular line with 7. Nf3 that GM Genna said he thinks is more promising for White than is generally portrayed in the books.  I haven't been able to find it yet, though.  I wonder if Markovich knows what I'm talking about.
  
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Re: Transpositions in the various QG lines
Reply #16 - 09/06/06 at 14:59:59
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Yes Markovich, 7.Nc2 looks odd, but it has the idea of playing f2-f4 to hit the e5 pawn.  I don't really trust this idea for White, though.

I agree with everything else you've said (more or less); I too play the Catalan in an active, gambiteering style (like with 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 dxc4 5.Bg2 Be7 6.0-0 0-0 7.Na3).  So perhaps we have similar "styles."  

Of course those exclamation marks in my previous post are my own annotations, reflecting the fact that I don't think White has anything in this line.  But hopefully you can prove me wrong!  I'd love to see a couple of model games or ideas for White that would make me change my mind.  The move order 1.d4 Nf6 2.c4 e6 3.g3 c5 is a big hole in my repertoire, because I don't particularly like the Fianchetto lines against the Modern Benoni.

P.s.  I apologize for having taken over the thread; perhaps Markovich would be so kind as to start a new thread to share some ideas in this line?

  
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Re: Transpositions in the various QG lines
Reply #15 - 09/06/06 at 12:51:29
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ErictheRed wrote on 09/05/06 at 19:50:15:
Markovich wrote on 09/05/06 at 19:17:23:


(Off-topic.  A nice thing about the Catalan is that you can also play it instead of the Nimzo IF you are willing after 1. d4 Nf6  2. c4 e6  3. g3 c5 either (1) to play a symmetrical English with 4. Nf3 or (2) to play a Modern Benoni, fianchetto variation, with 4. d5 (though you have to be prepared for 4...b5 as well).  Personally I do (1), and since I'm playing that way, I also play 1. d4 Nf6  2. c4 c5  3. Nf3 and avoid the Benko and the entire Benoni complex.)


I also have played the Catalan for the last 7 years or so.  The main difference between my repertoire and yours is that I play against the Slav proper instead of playing the Exchange variation.  I'd like to ask you about what you call the symmetrical English, however:

Though I usually play different lines against the Modern Benoni, when I face the move order 1.d4 Nf6  2.c4 e6  3.g3 c5 I play 4.d5 because I can't seem to find ANY advantage for white after 4.Nf3.  Perhaps you can point the way, but:

1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4! 5.Nxd4 d5! already starts to look good for Black, i.e. 6.Bg2 e5! 7.Nc2 d4 and I like Black, or 7.Nf3 d4 8.0-0 Nc6 and again I like Black.

Do you have any ideas to prove an advantage for White in those positions, or do you just hope Black won't play those exact moves?  I know they aren't the most common, but I firmly believe Black has already equalized--maybe more.  When preparing my repertoire I decided that I liked playing the g3 lines of the Benoni better than the above.  I'd love to play 4.Nf3 if you have any ideas about how to meet 4.Nf3 cxd4! 5.Nxd4 d5!.


5...d5 "!" (actually I think that Black has other moves that are at least as good and perhaps a little better, being less committal) 6. Bg2 e5  7. Nf3 d4  8. 0-0 Nc6  9. e3 and as I once said to a chess friend, if this position were to arise with colors reversed, everyone would think "Black's" line was the hottest, most dynamic, hypermodern "defense" that chess had to offer.  Is there anything that says White can't go for dynamic hyper-modernism?  But seriously, I will post some specific ideas when I am in a place where I have access to my Bookup files.  In general, of course, you're playing against Black's central pawns and you have some longterm pressure against his queenside.

I would never play 7. Nc2, by the way.  Bleagh!

Among the alternatives to 5...d5, one of Black's more challenging ideas is 5...Qb6  6. Bg2 Bc5  7. e3 Nc6.  But here 8. 0-0!? Nxd4  9. exd4 Bxd4  10. Nc3 offers White really good play for his pawn.  For example, 8...0-0 9. Nb5 e5  10. Nxe5 exd5  11. b3 d5  12. Bb2 and I, personally, am happy to be White. 

But on a more philosophical level, I would rather play a more open position with my g2-bishop looking at a black pawn on b7 than a closed position with my g2-bishop looking at a blocked white pawn on d5.  Indeed, I think the Catalan itself (at least after ...dxc4) is best played in an open, gambiteering spirit, or with the option to go that way if Black gives one the chance.
  

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Re: Transpositions in the various QG lines
Reply #14 - 09/06/06 at 04:52:47
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As Markovich thinks 4.Nf3 cxd4 5.Nxd4 d5 good for White, I take the liberty to answer this last question - or, more precisely, let Eric Schiller do it. In his 1983 book on the Catalan, which is quite good, Schiller treats 4.dxc5 Bxc5 5.Nf3, as proposed by Taimanov. There is not much experience and certainly not on top level. Critical are two gambit lines:

a) 5...Nc6 6.Bg2 Qa5+ 7.Bd2 (7.Nbd2 Donner-Szabo, Hastings 1954/55) Qb6 8.e3 Qxb2 9.Nc3 and
b) 5...Qa5+ 6.Bd2 Qb6 7.e3 Qxb2 8.Nc3 Qb6 9.Rb1 (why not 9.Na4!?) Qd8 10.Bg2 o-o 11.Ne5 Schiller-Banks, London 1982.

The precise move order might depend on 5...Qb6. 5.Nf3 Qb6 6.e3 o-o 7.Nc3 d5 8.Qb3 Nc6 9.Qxb6 axb6 10.Be2 +=Schiller-Plaskett, Manchester 1981.

Of course you may let depend your choice (4.d5 or 4.Nf3) on mood etcetera.
  

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Re: Transpositions in the various QG lines
Reply #13 - 09/05/06 at 19:50:15
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Markovich wrote on 09/05/06 at 19:17:23:


(Off-topic.  A nice thing about the Catalan is that you can also play it instead of the Nimzo IF you are willing after 1. d4 Nf6  2. c4 e6  3. g3 c5 either (1) to play a symmetrical English with 4. Nf3 or (2) to play a Modern Benoni, fianchetto variation, with 4. d5 (though you have to be prepared for 4...b5 as well).  Personally I do (1), and since I'm playing that way, I also play 1. d4 Nf6  2. c4 c5  3. Nf3 and avoid the Benko and the entire Benoni complex.)


I also have played the Catalan for the last 7 years or so.  The main difference between my repertoire and yours is that I play against the Slav proper instead of playing the Exchange variation.  I'd like to ask you about what you call the symmetrical English, however:

Though I usually play different lines against the Modern Benoni, when I face the move order 1.d4 Nf6  2.c4 e6  3.g3 c5 I play 4.d5 because I can't seem to find ANY advantage for white after 4.Nf3.  Perhaps you can point the way, but:

1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4! 5.Nxd4 d5! already starts to look good for Black, i.e. 6.Bg2 e5! 7.Nc2 d4 and I like Black, or 7.Nf3 d4 8.0-0 Nc6 and again I like Black.

Do you have any ideas to prove an advantage for White in those positions, or do you just hope Black won't play those exact moves?  I know they aren't the most common, but I firmly believe Black has already equalized--maybe more.  When preparing my repertoire I decided that I liked playing the g3 lines of the Benoni better than the above.  I'd love to play 4.Nf3 if you have any ideas about how to meet 4.Nf3 cxd4! 5.Nxd4 d5!.
  
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Re: Transpositions in the various QG lines
Reply #12 - 09/05/06 at 19:17:23
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Willempie wrote on 09/04/06 at 09:51:19:
I am currently going though the d4-book by Cox and am now working on the QG (20 years too late Grin) and found myself wondering a bit about the issue of move orders and transpositions (they are much harder for me than after 1e4). 
I was wondering a bit about some move-order issues:
-1.d4 d5 2.c4 e6 3.Nc3 dxc4, now it looks like 4.e4 is best but then iirc this transposes to a QGA with 3 e4 line of which I know next to nothing. So what's the idea after eg 4.e4 c5 5.d5 (I think) exd5 6.Nxd5
-1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 Be7. Cox mentions that this transposes to a passive version of the QGD, but from my limited knowledge both Be7 and c6 are quite standard in a Lasker and the other variation whose name eludes me. So what would be a proper way to "exploit" this?
-In the slav why is 3.Nf3 preferred over 3.Nc3? I remember that recently Korchnoi played this way against Kasparov in which Korchnoi seemed to get better play up until about move 12. Since I am not yet at their level I am prolly wrong though Grin
[Event "Zuerich Lichthof Champions"]
[Site "Zuerich"]
[Date "2006.08.22"]
[Round "4"]
[White "Kortschnoj,Viktor"]
[Black "Kasparov,Garry"]
[Result "1/2"]
[Eco "D25"]
1.d4 d5 2.c4 c6 3.Nc3 dxc4 4.e3 Be6 5.Nf3 Nf6 6.Ng5 Qc8 7.a4 g6 8.a5 Bg7 9.Nxe6 Qxe6 10.Ra4 Nbd7 11.Bxc4 Qd6 12.e4 e5 13.dxe5 Qxd1+ 14.Nxd1 Nxe5 15.Be2 0-0-0 16.Be3 Nd3+ 17.Bxd3 Rxd3 18.Ke2 Rb3 19.Bxa7 Re8 20.f3 Nd5 21.Kd2 Nb4 22.Bb6 Bh6+ 23.Ke2 f5 24.Bc5 Nd3 25.Bb6 Nxb2 26.Nxb2 Rxb2+ 27.Kd3 Rxg2 28.exf5 gxf5 29.Rh4 Re6 30.Rh3 Kd7 31.Rg3 Rd2+ 32.Kc3 Ree2 33.Rg8 Rc2+ 34.Kb3 Rb2+ 35.Kc3 Rec2+ 36.Kd3 Rd2+ 37.Kc3 Rxh2 38.Rxh2 Rxh2 39.Rb8 Ke6 40.Rxb7 Ra2 41.Rxh7 Bf4 42.Rh5 Ra3+ 43.Kc2 Be5 44.Bc5 Kd5 45.Rxf5 Kxc5 1/2

So could anyone give me some pointers on these minor issues?


As pointed out by others, there are all sorts of move-order nuances in the 1. d4 systems.  I like to play the Catalan, so I play 1. d4 d5  2. c4 e6  3. Nf3 expecting 3...Nf6  4. g3.  After 3...c6 I have 4. Qc2 but more often, in Catalan spirit, I play 4. g3.  If 2...c6 is played, I play 3. cxd5 cxd5  4. Nf3.  Although I've been an "attacking" player most of my life, I've discovered that it is quite amusing, and often conducive of the full point, to play the supposedly dull and drawish Exchange Slav.  This way also, I never have to face the Meran or indeed any version of the Semi-Slav (of course, there is a Semi-Slav-like system of the Closed Catalan, but I am happy there).  Against 2...c6, the Catalan-like 3. Nf3 Nf6  4. g3 is not much good, because the Black bishop just comes out.

When I do play 3. Nc3 versus 2...c6, I welcome both 3...e5 and 3...dxc5.  But playing that way does require you to play against the Noteboom and/or Meran.

(Off-topic.  A nice thing about the Catalan is that you can also play it instead of the Nimzo IF you are willing after 1. d4 Nf6  2. c4 e6  3. g3 c5 either (1) to play a symmetrical English with 4. Nf3 or (2) to play a Modern Benoni, fianchetto variation, with 4. d5 (though you have to be prepared for 4...b5 as well).  Personally I do (1), and since I'm playing that way, I also play 1. d4 Nf6  2. c4 c5  3. Nf3 and avoid the Benko and the entire Benoni complex.)
  

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Re: Transpositions in the various QG lines
Reply #11 - 09/05/06 at 18:58:21
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kylemeister wrote on 09/05/06 at 16:37:35:
I think that's a very nice description.  The main exception/caveat I can think of is ...c6 in the Capablanca (Orthodox) variation, which is played basically in preparation for the freeing maneouvre ...dc and ...Nd5 (in line with the old/classical approach).



This is not really an exception, I don't think. After 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 Black started playing 7...c6 precisely because 7...c5 didn't work, and therefore some other way was needed to free Black's cramped position. 

It was considered that 7...b6 weakened the queenside light squares too much, so eventually they came up with the simplifying sequence 7...c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5! to ease Black's cramp and finally free the problem c8-bishop.

BTW I'm not quite sure why it was named after Capa, since the sequence was played in many games before Capa's time.

A good source of information on the historical development of these ideas is the classic book "Chess from Morphy to Botvinnik" by Konig. Also Fine's old book "The Ideas behind the chess openings" gives a good account of opening theory as it stood in the 1940s, before the new ideas regarding dynamic weakness exploded on to the scene.
  
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Re: Transpositions in the various QG lines
Reply #10 - 09/05/06 at 16:37:35
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Paddy wrote on 09/05/06 at 15:00:06:
Willempie wrote on 09/04/06 at 09:51:19:
I am currently going though the d4-book by Cox and am now working on the QG (20 years too late Grin) and found myself wondering a bit about the issue of move orders and transpositions (they are much harder for me than after 1e4). 
I was wondering a bit about some move-order issues:
-1.d4 d5 2.c4 e6 3.Nc3 dxc4, now it looks like 4.e4 is best but then iirc this transposes to a QGA with 3 e4 line of which I know next to nothing. So what's the idea after eg 4.e4 c5 5.d5 (I think) exd5 6.Nxd5
-1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 Be7. Cox mentions that this transposes to a passive version of the QGD, but from my limited knowledge both Be7 and c6 are quite standard in a Lasker and the other variation whose name eludes me. So what would be a proper way to "exploit" this? 
(...)

So could anyone give me some pointers on these minor issues?


The classical theory of the Queen's Gambit maintains that after 1 d4 d5 2 c4 e6 Black can equalise if he can play ...c5 without disadvantage, which explains why in the main lines of the QGD Orthodox Defence we find White trying to put so much pressure on d5 that ...c5 is not playable, and why we also see Black trying to delay committing himself to ...c6, because he would really prefer to play ...c5.

In contrast, when Black plays an early c6 it will be because, instead of simply trying to equalise, he is going for the alternative approach of creating counterplay, with one of these plans: a) he's thinking of playing dxc4 and then ...b5 (as in most variations of the Semi-Slav) ; or b) he's thinking of playing ...Qa5 (as in the Cambridge Springs), trying to take advantage of the absence from the queenside of White's dark-squared bishop.

The first approach (equalise before trying to win) held sway more or less up to the 1940s. The second (sod equalising, I'm going for counterplay!) became more popular when dynamic players (generally but not exclusively associated with the Soviet hegemony post WW2) showed that it could be successful in practice, even if it did not neatly fit the classical theory. Both strategies are valid and can still be discerned in the games of contemporary grandmasters. 

[The above description is very "broad brush" and no doubt there are a lot of exceptions and caveats but I think such simplifications are useful sometimes to understand how ideas have developed and to give a shape to history.]

In conclusion, and back on topic, a combination of, for instance, an early ...c6 and ...Be7 would thus constitute a rather dysfunctional mixture of strategies.


I think that's a very nice description.  The main exception/caveat I can think of is ...c6 in the Capablanca (Orthodox) variation, which is played basically in preparation for the freeing maneouvre ...dc and ...Nd5 (in line with the old/classical approach).

This reminds me of one of the things that struck me as suspicious about Black's (a Swedish teenager whose performance rating in this event was reportedly 2575) opening play when I glanced at the game below.  That is, when Black is using the Meran-type approach (i.e. Paddy's "a" above), he should generally get on with it before completing K-side development.   


[Event "Pardubice"]

[Site ""]

[Date "2006.??.??"]

[Round "8"]

[White "Lindberg, Bengt"]

[Black "Blomqvist, Erik"]

[Result "0-1"]

[WhiteElo "2385"]

[BlackElo "2133"]

[NIC "SL 1.4.11"]

[ECO "D11"]

[PlyCount "84"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qb3 e6 5. g3 Be7 6. Bg2 O-O 7. Nc3 dxc4 8. Qxc4 b5 

9. Qb3 Bb7 10. O-O a6 11. Rd1 Nbd7 12. Be3 Qc7 13. Rac1 Rac8 14. Bf4 Qb6 15. e4 Rfd8 

16. h3 c5 17. d5 c4 18. Qc2 exd5 19. e5 Nh5 20. Ng5 g6 21. Be3 Bc5 22. Bxc5 Rxc5 

23. Nxd5 Bxd5 24. Bxd5 Nxe5 25. Qe4 Nf6 26. Qe3 Rdxd5 27. Rxd5 Nxd5 28. Qxe5 Nf6 

29. Qd4 Qc6 30. h4 Rd5 31. Qa7 Rd7 32. Qb8 Kg7 33. Re1 h6 34. Nh3 Qf3 35. Qe5 Rd2 

36. a3 Qb3 37. Nf4 Qxb2 38. Qe7 Rxf2 39. Ne6 Kh8 40. Nf4 Qd4 41. Kh1 Kg8 42. Qb7 

Qd2 0-1

  
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Re: Transpositions in the various QG lines
Reply #9 - 09/05/06 at 15:00:06
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Willempie wrote on 09/04/06 at 09:51:19:
I am currently going though the d4-book by Cox and am now working on the QG (20 years too late Grin) and found myself wondering a bit about the issue of move orders and transpositions (they are much harder for me than after 1e4). 
I was wondering a bit about some move-order issues:
-1.d4 d5 2.c4 e6 3.Nc3 dxc4, now it looks like 4.e4 is best but then iirc this transposes to a QGA with 3 e4 line of which I know next to nothing. So what's the idea after eg 4.e4 c5 5.d5 (I think) exd5 6.Nxd5
-1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 Be7. Cox mentions that this transposes to a passive version of the QGD, but from my limited knowledge both Be7 and c6 are quite standard in a Lasker and the other variation whose name eludes me. So what would be a proper way to "exploit" this? 
(...)

So could anyone give me some pointers on these minor issues?


The classical theory of the Queen's Gambit maintains that after 1 d4 d5 2 c4 e6 Black can equalise if he can play ...c5 without disadvantage, which explains why in the main lines of the QGD Orthodox Defence we find White trying to put so much pressure on d5 that ...c5 is not playable, and why we also see Black trying to delay committing himself to ...c6, because he would really prefer to play ...c5.

In contrast, when Black plays an early c6 it will be because, instead of simply trying to equalise, he is going for the alternative approach of creating counterplay, with one of these plans: a) he's thinking of playing dxc4 and then ...b5 (as in most variations of the Semi-Slav) ; or b) he's thinking of playing ...Qa5 (as in the Cambridge Springs), trying to take advantage of the absence from the queenside of White's dark-squared bishop.

The first approach (equalise before trying to win) held sway more or less up to the 1940s. The second (sod equalising, I'm going for counterplay!) became more popular when dynamic players (generally but not exclusively associated with the Soviet hegemony post WW2) showed that it could be successful in practice, even if it did not neatly fit the classical theory. Both strategies are valid and can still be discerned in the games of contemporary grandmasters. 

[The above description is very "broad brush" and no doubt there are a lot of exceptions and caveats but I think such simplifications are useful sometimes to understand how ideas have developed and to give a shape to history.]

In conclusion, and back on topic, a combination of, for instance, an early ...c6 and ...Be7 would thus constitute a rather dysfunctional mixture of strategies.
  
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Re: Transpositions in the various QG lines
Reply #8 - 09/05/06 at 11:28:57
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The trouble with 1 d4 d5 2 c4 e6 3 Nf3 c6 4 Nc3 Be7 for Black is 5 Bf4. In the usual QGD Black would meet Bf4 not with a …c6 set-up but with ….c5. If instead he plays 4…Nf6 5 Bg5 (offering a Botvinnik) Be7 then we have a QGD in which Black has committed to the old Orthodox line with …c6 and moreover done it rather early (he can’t now play a pure Lasker, for example). If you take a standard QGD move order like 1 d4 d5 2 c4 e6 3 Nc3 Nf6 4 Bg5 Be7 5 Nf3 h6 6 Bh4 00 7 e3 Ne4 would be the Lasker. In your move order Black would have …c6 in instead of …00. I don’t suppose that means he has to resign immediately, but it does narrow Black’s options – he wouldn’t always play …c6 in the Lasker. He certainly can’t get a Tartakover (ie a QGD with …b6) and I think also White may be able to gain a shade of tempo in an Orthodox by playing Qc2 before Rc1 now and perhaps even then 000 (I am not an expert but White normally plays Rc1 and I think Black’s some of Black’s more highly-regarded defences against this entail …c5 and/or ….Nc6). Black might also be allowing plans with Bxf6 in reply to ….h6 to gain in strength by having …c6 in so early.

The choice of 3 Nc3/3Nf3 against the Slav is very complex; as people say it partly encompasses what you think of 3 Nc3 e5/dxc4, but also perhaps more significantly what you want to do against the …a6 Slav and the Semi-Slav. 3 Nf3 Nf6 4 e3 Bf5 is supposed to be very equal. 3 Nc3 Nf6 4 e3 is supposed to stop this somehow (presumably 5 cxd5 cxd5 6 Qb3?) and also of course prevents the main line Slav, since White doesn’t need to bother with a4 before recovering his pawn on c4. On the other hand it restricts your options a bit against the …a6 Slav – you can’t play c5/Bf4 like Topalov any more. It may I suppose give you options based on c5/f4, but I don’t know about this.

If you want to play the repertoire I recommend though, that is 5 e3 against the …a6 Slav and Botvinnik against the semi-Slav, though, it doesn’t really matter, since whichever move you play on move 3 you have to play the other after 3…Nf6.

It also matters what you intend to play if Black’s next is 3…e6. If you want to play the main line Abrahams, it doesn’t matter because you develop the other knight now anyway. But if you want to avoid that you have a choice between 3 Nf3 e6 4 Qc2, or 3 Nc3 e6 4 e4. The repertoire I prevent involves playing both of these depending on whether Black goes 2…e6, 3…c6 or 2…c6, 3….e6. I claim somewhere though that Abrahams players normally start with 2….e6, when you go 3 Nc3 and if they go 3…c6 you can go 4 e4. That’s why I give a game on that and glibly say somewhere that 3 Nf3 c6 4 Qc2 is quite easy to play (actually this is true; it’s basically like a QGD).

I hope that helps, although I doubt it does – these things are difficult and typing that has made me realise how difficult.
  
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Willempie
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Re: Transpositions in the various QG lines
Reply #7 - 09/05/06 at 06:29:21
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Thanks, that's the one. I get a bit confused by all the transpositions especially when various games end up in the same position by a gazillion different move orders. Especially since I used to avoid the QG with white and black like the plague Grin
  

If nothing else works, a total pig-headed unwillingness to look facts in the face will see us through.
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