That is not a Queen's Gambit Accepted, deferred or whatever you want to call it.
It's the Noteboom!
Queen's Gambit Delayed Accepted
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Jan 9, 2016
0
#3
If both e6 and c6 are played, it's probably best to defend the c-pawn in my experience.
after 3...e6,you've transposed into the semi-slav.I think that after you played 3.Nf3 you were expecting ...Nf6,After 4.Nc3 dxc4, 5.e4 would probably be better.
Jan 9, 2016
0
#6
Yeah, it's a free pawn. Still, it looks kind of reasonable for White (as in, it's not that smooth for Black and White has some chances to regain the pawn if Black isn't careful, e.g. 1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 dxc4 5. a4 Bb4 6. e3 b5 7. Bd2 a5 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 which I just got by scrolling through top moves in game explorer)? If you're not as materialistic as me.
Of course, playing e3 at any point is pretty safe way to some Meran-type thing, which is very reasonable.
pfren wrote:
Please, disregard the nonsense about "free pawns" and such.
This variation is very risky, for both sides, and has tons of theory. Currently the critical line is supposed to be this one:
GM Ruslan Scherbakov has authored a book on the variation 4 years ago, and devotes to 15.Nd2 alone 24 pages. The position is so double-edged, that suffice to say that most of his (very extensive) analysis does not stand up anymore.
I'd rather advise you not entering such variations with either colour- they are stuff for professionals, and correspondence players.
It is really enternaining to view your opinions versus Five*. Of course, I mostly agree with you. I once had the strange experience of playing against the same opponent in two serious but very different events a week apart. In the first game I was the white side of a Winawer and thrashed him in a variation that is still not mainstream theory but I know to be a win for white. In the next game he played the white side of a Grunfeld and played an obscure line that was very dangerous. I found OTB an "only move" reply, and he exclaimed to me (very unprofessional) a few moves later that I loved to play very sharp variations. The Noteboom reminds me of this, and I agree with your opinions for most players.
Jan 10, 2016
0
#10
First things first: I agree with pfren that you should probably avoid this kind of position for now, at least when you are unprepared. Pfren's line up to 12.Bb2 is (as far as I know) forced if you want to fight for an advantage here, while otherwise there is also no way to play some calm moves and get a playable position. So it is probably best to play e3 and get some Semi-Slav/Stonewall.
Now I would like to address both pfren and Fiveofswords. I read through your "discussion" about free pawns and there is one thing that I do not understand. Both of you seem to agree that 10.Bxc4 after 9...a6 is an obvious win. I feel more and more stupid every minute because I can't figure out why black does not take on c3 and c4 after that. Please, can anyone enlighten me as I am too proud to turn on the engine?
Jan 10, 2016
0
#11
If white didn't know the notboom, or getting compensation for pawn or whatever want to call it, looks reasonable to play 4e3, or 4Qc2
Jan 10, 2016
0
#12
I wonder what exactly do you mean by "free pawn". Is that a purely materialistic fact of black being a pawn up or do you mean "black is a pawn up for no compensation"? Since in the Botvinnik variation white has a great deal of compensation you probably mean the former. I think this may be the reason for the whole discussion because a free pawn is usually a pawn you can win at no cost whatsoever.
Also, I don't think the consequences of 9...a6 are anywhere near simple. If 10.Bxc4 does not work, which I believe it doesn't, 9...a6 seems to lead to a highly complicated position where white tries to prove compensation.
Alexander_Donchenko wrote:
Both of you seem to agree that 10.Bxc4 after 9...a6 is an obvious win. I feel more and more stupid every minute because I can't figure out why black does not take on c3 and c4 after that. Please, can anyone enlighten me as I am too proud to turn on the engine?
I'm not 
According to the engine, 10. Bxc4 is the only move not losing.
The line above is given as a draw after 13. Nxc4 and 13. Ba5. It seems somewhat sharp though...
Jan 10, 2016
0
#15
Give it up FiveOfSwords - pfren is right.
I've studied many lines of this opening, and clearly far more than you have. Played a few correspondence games with it, and every game that I played over the board resulted in Marshall Gambits (1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 - Most that actually play the Noteboom don't play 2...c6, but rather, 2...e6, and so 3.Nc3 is far more common than 3.Nf3).
By the way, the theory of the Marshall Gambit is just more stuff that you have to know with little to no room for error by Black!
Back to the Noteboom, Black is basically banking on his connected passers to take him to the promise land. White OWNS the center. White's value in the center is greater than that of a 2016 Cadillac! Black has 20 AK-47s pointing up from under his butt that sits on e8 at the start of the game. All it takes is one slight miscue for any one of them to discharge and kill Black!
If you want to talk "high risk" openings, the Noteboom puts the Botvinnik Semi-Slav to shame!
lol Angry chess men.
Jan 10, 2016
0
#18
PFren got it right again. I have no clue why someone would disagree with him when it's easy enough to verify what he said.
Jan 10, 2016
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#19
As an aside, I do disagree with PFren on one issue. He says this is best left to professionals and correspondence players. I think it's a very dangerous line OTB below professional level. I think any reasonably proficient club player could score tons of points as Black playing this stuff if he prepares it. As Pfren said, it's a very dangerous, double-edged opening.
In this game, my opponent played dxc4. Was it possible to regain the pawn or had I made a mistake earlier? Where did I first make a mistake, and where can I find a set of key queen's gambit positions to memorize to avoid being a pawn down in the opening?