Answers.Body: <p>The line is the subject of Chapter 3 of Alexei Kornev's book <a href="https://chess.co.uk/products/play-1-d4-d5-2-c4-e6-alexei-kornev" rel="nofollow noreferrer">Play 1.d4 d5 2.c4 e6!</a>, published by Chess Stars. The contents page of the book is available at the link. It's a repertoire book from Black's perspective. Kornev writes that after 5.e4 &quot;Black must find several very precise moves in order to reach equality&quot;.</p>
  
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Answers.CreationDate: 2023-09-20T12:40:37.257Z
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Answers.UserDisplayName: James Martin
Answers.Body: <p>Since White gets a significant advantage at once with with 5.e4, I doubt that anyone has ever written a book about it.</p>
  
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Answers.CreationDate: 2023-08-02T06:42:47.357Z
Answers.Text: But isn't this kind of similar to the Semi-Tarrasch, which someone has probably written a book about?
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Answers.Text: Worth mentioning that some top players do play it occasionally, especially at rapid time controls. Kramnik has a dozen or so games as black. Way less bad than 1.d4 d5 2. c4 Nf6 3. cxd5 Nxd5 for example. Stockfish gives it +0.3 or so.
Answers.UserDisplayName: James Martin
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Answers.CreationDate: 2023-08-03T02:54:12.287Z
Answers.Text: Indeed it has been played, but without much success. Lichess gives the WDL percentages as 37-47-16. Books have certainly been written about openings that may be worse, like 1.e4 e5 2.Nf3 f5, but those are tricky and interesting. If I were an author I would not find this an exciting project.
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Answers.Text: I think those percentages are for the 4...exd5 variation.
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Answers.CreationDate: 2023-08-09T14:26:49.307Z
Answers.Text: Interesting to see the line appearing in today's World Cup classical game between the Muzychuk sisters: https://chess24.com/en/watch/live-tournaments/fide-womens-world-cup-2023/4/2/1
Answers.UserDisplayName: James Martin
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Answers.Text: @James Martin. Thanks for noticing that. The first 10 moves were very normal, leaving white with a nice center and a space advadvantage, about +0.3. Black has exhanged off two minors, castled into safety, and will react to whatever White tries to do.  11.h4 seems like a very creative novelty (although Stockfish is not all that impressed at +0.2) and the game gets very interesting. 
  
  But there is not going to be a book about this for the OP until the line gets more high-level exposure. If certain White tries become popular, then material for a book will start to emerge.
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Body: <p>Specifically, this line.</p>
  <pre><code>[fen &quot;&quot;]
  [Startply &quot;8&quot;]
  
  1.d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 
  </code></pre>
  
Tags: <opening><queens-gambit-declined>
Title: What are some decent books for explaining the positional ideas of the 4...Nxd5 line of the QGD from black's perspective?
ThreadText: # What are some decent books for explaining the positional ideas of the 4...Nxd5 line of the QGD from black's perspective?
  
  (Asked by: username_0 on 2023-08-01)
  
  Specifically, this line.
  [fen ""]
  [Startply "8"]
  
  1.d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5
  
  **Tags:** opening, queens-gambit-declined
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2023-09-20. Score: 2 | Accepted answer
  
  The line is the subject of Chapter 3 of Alexei Kornev's book [Play 1.d4 d5 2.c4 e6!](https://chess.co.uk/products/play-1-d4-d5-2-c4-e6-alexei-kornev), published by Chess Stars. The contents page of the book is available at the link. It's a repertoire book from Black's perspective. Kornev writes that after 5.e4 "Black must find several very precise moves in order to reach equality".
  
  
  ---
  
  ### Answer by username_2 on 2023-08-02. Score: 0
  
  Since White gets a significant advantage at once with with 5.e4, I doubt that anyone has ever written a book about it.
  
  > **Comments:**
  > **username_0**: But isn't this kind of similar to the Semi-Tarrasch, which someone has probably written a book about?  
  > **username_1**: Worth mentioning that some top players do play it occasionally, especially at rapid time controls. Kramnik has a dozen or so games as black. Way less bad than 1.d4 d5 2. c4 Nf6 3. cxd5 Nxd5 for example. Stockfish gives it +0.3 or so.  
  > **username_2**: Indeed it has been played, but without much success. Lichess gives the WDL percentages as 37-47-16. Books have certainly been written about openings that may be worse, like 1.e4 e5 2.Nf3 f5, but those are tricky and interesting. If I were an author I would not find this an exciting project.  
  > **username_0**: I think those percentages are for the 4...exd5 variation.  
  > **username_1**: Interesting to see the line appearing in today's World Cup classical game between the Muzychuk sisters: https://chess24.com/en/watch/live-tournaments/fide-womens-world-cup-2023/4/2/1  
  > **username_2**: @username_1. Thanks for noticing that. The first 10 moves were very normal, leaving white with a nice center and a space advadvantage, about +0.3. Black has exhanged off two minors, castled into safety, and will react to whatever White tries to do.  11.h4 seems like a very creative novelty (although Stockfish is not all that impressed at +0.2) and the game gets very interesting.   But there is not going to be a book about this for the OP until the line gets more high-level exposure. If certain White tries become popular, then material for a book will start to emerge.  
  
  ---
  
  