Answers.Body: <p>According to <a href="https://chesstempo.com/game-database.html" rel="nofollow noreferrer">this database</a>: </p>
  
  <p>The next move for white will be:</p>
  
  <ul>
  <li><p><code>5.e3</code> with 40% of win, 46% of draw and 14% of lose. (3538 games were played like that)</p></li>
  <li><p><code>5.cxd5</code> with 48.5% of win, 41.5% of draw. (344 games were played like that)</p></li>
  </ul>
  
  <p>Example for a game which start like this:</p>
  
  <pre><code>[Event "1st Rottal Open 2017"]
  [Site "Pfarrkirchen GER"]
  [Round "6.1"]
  [Date "2017.4.17"]
  [White "Haba, Petr"]
  [Black "Riediger, Martin"]
  [Result "1/2-1/2"]
  
  [FEN ""]    
  1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 g6 5.cxd5 cxd5 6.Bf4 a6 7.h3 Bg7 8.e3 Nc6 9.Be2 O-O 10.O-O Bf5 11.Rc1 Ne4 12.Na4 Bd7 13.Qb3 b5 14.Nc5 Nxc5 15.Rxc5 e6 16.Bd6 Re8 17.Ne5 Nxe5 18.dxe5 f6 19.Bc7 Qe7 20.Bd6 Qd8 21.Bc7 Qe7 22.Bd6 1/2-1/2
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-09-18T13:19:20.640Z
Answers.Text: He already looked in a database, you didn't answer his question.
Answers.UserDisplayName: RemcoGerlich
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-09-20T09:30:49.327Z
Answers.Text: @RemcoGerlich, maybe it was added later, but the question as it stands now specifically asks "How white proceeds after 4..g6?", which is what this answer seems to address.
Answers.UserDisplayName: firtydank
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-09-20T09:39:00.800Z
Answers.Text: @firtydank: I feel the question is more "why isn't 4...g6 played more often", or alternatively "how _should_ white proceed". Just which two moves are played most, without any information of why those moves, or how strong the players are who play that, or how the lines continue, when OP was already looking in a database, just seems to say nothing useful to answer those questions.
Answers.UserDisplayName: RemcoGerlich
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-09-18T13:18:04.867Z
Answers.LastActivityDate: 2017-09-18T13:18:04.867Z
Answers.UserDisplayName: Yaron
Answers.Body: <p>The main reason 4...g6 is not played is because White can put his dark squared bishop out side the pawn chain (Bf4) followed by e3. Blacks fianchettoed bishop will not have good influence as d4 is firmly held.  Whites dark square bishop however will influence the queenside where White will be seeking an advantage.
  You will see more games with g6 when White has played an early e3 blocking the bishop.  Smyslov played some nice games on the Black side of the Schlecter -- see his 125 Selected Games book.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-09-22T22:26:08.277Z
Answers.LastActivityDate: 2017-09-22T22:26:08.277Z
Answers.UserDisplayName: Ywapom
Body: <pre><code>[FEN ""] 
  
  1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3
  </code></pre>
  
  <p>Here we reach slav defense main line and theory goes with 4...e6</p>
  
  <p>As a way to avoid theory as black I used to play in blitz 4...g6, goes with bishop fianchetto and castle.</p>
  
  <p>As white I'm a d4 player and although not many people deviate 4...e6 with 4...g6 this could happen.</p>
  
  <p>Searching in professional games I didn't see many games with 4...g6.</p>
  
  <p>My question is: How white proceed after 4...g6? (there must be a reason why professionals rare play this move)</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-09-19T06:22:03.703Z
Comments.Text: `4... g6` is called the Schlechter variation.
Comments.UserDisplayName: Dag Oskar Madsen
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-09-19T22:40:50.910Z
Comments.Text: There are many more options for black besides 4... e6. For instance 4... dxc4 is the main-line Slav, which is known to be quite solid for black. There's also 4... a6 which I think is called the Chebanenko Slav, further preparing a future dxc4 and b5 to defend the extra c-pawn (essentially forcing white to do something about the tension on c4-d5). And I think there are even some people advocating the "liberated bishop opening" with moves like 4... Bf5, although I don't really believe that is theoretically playable for black.
Comments.UserDisplayName: TMM
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-09-20T17:35:51.567Z
Comments.Text: 4... dxc4 and 4... a6 have a huge theory, exactly what I am trying to avoid. And 4... Bf5 as you pointed out is weak.
Comments.UserDisplayName: Marco
Tags: <opening><slav-defense>
Title: unusual line slav defense
ThreadText: # unusual line slav defense
  
  (Asked by: username_0 on 2017-09-18)
  
  ```
  [FEN ""] 
  
  1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3
  
  ```
  
  Here we reach slav defense main line and theory goes with 4...e6
  
  As a way to avoid theory as black I used to play in blitz 4...g6, goes with bishop fianchetto and castle.
  
  As white I'm a d4 player and although not many people deviate 4...e6 with 4...g6 this could happen.
  
  Searching in professional games I didn't see many games with 4...g6.
  
  My question is: How white proceed after 4...g6? (there must be a reason why professionals rare play this move)
  
  **Tags:** opening, slav-defense
  
  > **Comments:**
  > **username_1**: `4... g6` is called the Schlechter variation.  
  > **username_2**: There are many more options for black besides 4... e6. For instance 4... dxc4 is the main-line Slav, which is known to be quite solid for black. There's also 4... a6 which I think is called the Chebanenko Slav, further preparing a future dxc4 and b5 to defend the extra c-pawn (essentially forcing white to do something about the tension on c4-d5). And I think there are even some people advocating the "liberated bishop opening" with moves like 4... Bf5, although I don't really believe that is theoretically playable for black.  
  > **username_0**: 4... dxc4 and 4... a6 have a huge theory, exactly what I am trying to avoid. And 4... Bf5 as you pointed out is weak.  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_3 on 2017-09-18. Score: 3
  
  According to [this database](https://chesstempo.com/game-database.html):
  
  The next move for white will be:
  
  * `5.e3` with 40% of win, 46% of draw and 14% of lose. (3538 games were played like that)
  * `5.cxd5` with 48.5% of win, 41.5% of draw. (344 games were played like that)
  
  Example for a game which start like this:
  
  ```
  [Event "1st Rottal Open 2017"]
  [Site "Pfarrkirchen GER"]
  [Round "6.1"]
  [Date "2017.4.17"]
  [White "Haba, Petr"]
  [Black "Riediger, Martin"]
  [Result "1/2-1/2"]
  
  [FEN ""]    
  1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 g6 5.cxd5 cxd5 6.Bf4 a6 7.h3 Bg7 8.e3 Nc6 9.Be2 O-O 10.O-O Bf5 11.Rc1 Ne4 12.Na4 Bd7 13.Qb3 b5 14.Nc5 Nxc5 15.Rxc5 e6 16.Bd6 Re8 17.Ne5 Nxe5 18.dxe5 f6 19.Bc7 Qe7 20.Bd6 Qd8 21.Bc7 Qe7 22.Bd6 1/2-1/2
  
  ```
  
  > **Comments:**
  > **username_4**: He already looked in a database, you didn't answer his question.  
  > **username_5**: @username_4, maybe it was added later, but the question as it stands now specifically asks "How white proceeds after 4..g6?", which is what this answer seems to address.  
  > **username_4**: @username_5: I feel the question is more "why isn't 4...g6 played more often", or alternatively "how _should_ white proceed". Just which two moves are played most, without any information of why those moves, or how strong the players are who play that, or how the lines continue, when OP was already looking in a database, just seems to say nothing useful to answer those questions.  
  
  ---
  
  ### Answer by username_6 on 2017-09-22. Score: 2
  
  The main reason 4...g6 is not played is because White can put his dark squared bishop out side the pawn chain (Bf4) followed by e3. Blacks fianchettoed bishop will not have good influence as d4 is firmly held. Whites dark square bishop however will influence the queenside where White will be seeking an advantage.
  You will see more games with g6 when White has played an early e3 blocking the bishop. Smyslov played some nice games on the Black side of the Schlecter -- see his 125 Selected Games book.
  
  
  ---
  
  