As far as I can see, he doesn't even cover Ntirlis's main variations. And here's this too:

kylemeister wrote on 10/15/19 at 00:52:28:


Really, it's not conceptual enough to be a good introduction for weaker players (Neil Macdonald and Nigel Davies are better for that) and too much like Swiss cheese to produce any confidence in stronger players.

Nice and practical repertoire book but neither overwhelming nor theory-changing.

From the preface: „My goal was to create a repertoire that allows us to reach the middlegame with a solid foundation while not depending too much on exact theory. Instead, the focus is on strategic plans and positional understanding.“ 
That‘s why Lemos often goes for side-variations within the main lines. He doesn‘t seem to care for other authors and there‘s no bibliography. He only mentions Mega 2018 and CB Online Database.

Indeed, against the triangle he recommends 4e4 dxe4 5Nxe4 Bb4+ 6Bd2 (Carlsen-Anand 2013) but concedes some black possibilities to gain equal/unclear play.
In the QGA with 3e4 e5 4Nf3 exd4 5Bxc4 Nc6 60-0 Be6 he has the interesting 7Nbd2!? which is not mentioned by Rizzitano or Semkov. But here Lemos neglects 7...Qf6!? as played in some corr games and also in Grischuk-Radjabov (Gashimov Memorial 2019, 3 months before Lemos‘ preface).
In the Tarrasch with 9Bg5 c4 10Ne5 Be6 11Nxc6 bxc6 12b3 Lemos only examines the older 12..Qa5 but not 12..h6 (Aagaard/Ntirlis).

I could go on and on with such little inaccuracies.
The general presentation with plans and motifs to play for seems very good, especialy the chapters on QGE and Slav Exchange on the whole are fine, not only because of the well chosen games! But the devil is in the detail, and despite some interesting lines and a little bit of original analysis stronger players will dislike several parts of the book.

It‘s certainly a good book (4 / 5 stars ?!) for 1600-1900 players who want to start with a 1d4 mainline repertoire with much but not too much theory.
It‘s probably no must-by (2,5-3,5 / 5 stars?!) for stronger players.

tracke 

It seems to me that 5. Af4 and 5. Ag5 main lines in QGD are basically =. White just tries something new and then Black gets antidotes. Ntirlis's choices against both seem like cleanest equalisers in both lines. Marin had just released QGD databanks, maybe he even has more equalising lines. To prove advantage in 5. Af4 or 5. Ag5 would probably be a pain from White's point of wiew.

With the Exchange Variation, even if Black gets equality or close, sometimes psychologically for some it feels harder to play as Black. Similar mindset for people who play Catalán. At least, that was my guess.

Moskalenko's recent book on attacking with 1 d4 also uses the exchange QGD. Playing both sides of 1 d4 d5, I face the exchange a lot but I also play it, so I guess it is very popular at club and week-end tournament level and this is probably the target audience of these three books??

Thank-you Jonathan, that's great..

I do find it weird by some excerpts have no Index of Variations. I would think that it would increase their sales, if anything.

In the old days, you had to go to the store and look through the book itself, but still 

I would find it hard to get real advantage in Queen's Gambit now. I wonder also what he recommends against the Slav and QGD.

According to the Everyman homepage it’s out now and according to german Shop Niggemann it will be available next week.
It’s a white repertoire book with 256 pages and costs £19 / $28 / €22 .
The pdf preview (16 pages) shows preface and some parts of 3 e4 against the QGA.

Looks like a reasonable repertoire book: not overwhelming but fine!

tracke 

The book says 2019 some places but on Everyman pdf schedule it says Aug 2018. Anyone know anything about the book ¿