You're welcome! I also thought the position after 5...Be7 showed some resemblance to the QGD.  However, the author's continuation 6.e4 dxe4 7.fxe4 c5 8.d5 exd5 9.exd5 0-0 seems to steer toward Benoni territory.

Swiercz had these remarks about his choice: "One of the most popular responses as Black to 4.f3.  As it is such a hot line, I have decided to share my two cents on this topic." 

When I did a search in Mega Database 2020, this line was indeed marked as "Hot", so it seems that Swiercz is going with the trendy response to 4.f3.

I have the book and can confirm that FreeRepublic is correct in his deduction that 4...d5 is the author's recommended response to 4.Qc2.  Sadly the error "4.Qc2 0-0" occurs not only in the Table of Contents, but also in the Chapter Guides at the start of each of the two chapters covering 4.Qc2 and as well as in the page headers for all of the right-hand (recto) pages of those chapters.

For those interested in more details of the proposed repertoire, here's a quick summary of the responses to White's other fourth moves:

4.Qb3 c5
4.Bg5 c5 5.d5 d6 6.e3 Bxc3+
4.Bd2 0-0
4.g3 0-0 5.Bg2 Bxc3+
4.a3 Bxc3+ 5.bxc3 c5
4.f3 d5 5.a3 Be7

Although Swiercz's recommendation for 4.Nf3 is to transpose to the Ragozin with 4...d5, he notes that this variation will be part of volume 2, suggesting that this forthcoming volume will cover 1.d4 Nf6 2.c4 e6 3.Nf3.  The author didn't want to leave the readers of the current book completely without resources for meeting 4.Nf3, so he goes over 4.Nf3 Bxc3+ 5.bxc3 d6 in Chapter 6 of Volume 1.

kylemeister wrote on 11/15/21 at 00:26:16:


Impressive absence

iirc If you follow Sokolov's lines with Leela it finds some not very obvious attacking ideas for black that keep it very unclear indeed. Not at all surprised it looked nice for white in 2012.

I suspect that people mainly don't put it in books due to the quantity of alternative playable options with lower theoretical loads. The same way that all the white books tend to go for 5/6 Nge2.

FreeRepublic wrote on 11/14/21 at 23:07:46:

Seems that there has never been a Chess Publishing update on E59 ... wow.

Ivan Sokolov's 2012 book on the Rubinstein had almost 50 pages on it (that is, the line with 9...dc and 10...Qc7).  He thought 11. Bb2 should lead to an opening advantage for White.

A Complete Opening Repertoire for Black after 1.d4 Nf6 2.c4 e6! - Volume 1 - Nimzo-Indian

Publisher: Thinkers Publishing
Author: Dariusz Swiercz

Available from
https://thinkerspublishing.com/
https://forwardchess.com/

I was not familiar with the author, so I did a little research. He is rated 2659. His nationality is shown as Polish and American in Chess Assistant. As black he has played several lines against the Rubinstein, mostly the main line, E59. I would be curious to know what he recommends for black.

E59 probably does not deserve it's "main line" name. I don't know the last time it was recommended for black. I think of it as "the main line no one talks about."

I still find the line to be strategically interesting. White has the two bishops but one is locked up behind pawns. The line does well in human games. Analyzing with a computer, it seems black always has a way, though not always the first one that I or the engine consider.