Answers.Body: <ol start="2">
  <li>Rd6 followed up with 3. c5 looks strong for White, unless I am missing some obvious tactics.</li>
  </ol>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-12-05T07:31:52.457Z
Answers.Text: +1, I completely missed that move in my calculation, see my update above. I think it was actually played in the game but forgot how I played...
Answers.UserDisplayName: AlwaysLearningNewStuff
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-12-05T01:10:11.200Z
Answers.LastActivityDate: 2014-12-05T01:10:11.200Z
Answers.UserDisplayName: user58697
Body: <p>After being squeezed for an entire game I got the chance to ease my position with a pawn exchange. Incidentally, this would open lines for my pieces to attack opponent's weakened king. I played <code>...b6-b5</code> in the position below, and won. Computer played badly so I ask here for help to determine objective assessment of the below position -> does <code>...b6-b5</code> give equality for Black or can he aim for more?</p>
  
  <pre><code>[Title "Black to move"]
  [fen "2r3k1/p4p1p/qp2p1p1/4Q3/2PR1P2/P7/1P4PP/7K b - - 0 1"]
  
  1...b5
  </code></pre>
  
  <h2>EDIT:</h2>
  
  <p>To help the viewers understand the nature of this question, here are the lines I saw that convinced me that Black suddenly gets good chances after <code>...b5</code> :</p>
  
  <pre><code>[Title "Black to move"]
  [fen "2r3k1/p4p1p/qp2p1p1/4Q3/2PR1P2/P7/1P4PP/7K b - - 0 1"]
  
  1...b5 2.c5 (2.Rd7 (2.cxb5? Rc1+) 2...bxc4 3.Qf6 Rf8 4.Qe7 {Trying to win back the pawn} c3! {With the threat of Qf1 checkmate, and cxb2 Black should win in my opinion} ) 2...b4! {Threatening Qf1 checkmate} 3.Qe3 $8 bxa3 4.bxa3 $8 (4.Qxa3? Qf1$) 4...Qf1 5.Qg1 Qxg1+ 6.Kxg1 Rxc5
  </code></pre>
  
  <p>I think <code>2.Rd6</code> was played in the game but I can't remember what happened nor what I had in mind as a response... Since it is clear that after that move Black must defend, my question is answered -> Black can not aim for more than an equality :(</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-12-05T01:13:30.587Z
Comments.Text: `...b6-b5` is impossible in the given position. Should that pawn be on `b6`, I assume?
Comments.UserDisplayName: Henry Keiter
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-12-05T05:33:13.857Z
Comments.Text: @HenryKeiter: I played `...b6-b5` as a last move, I clearly stated that in my post. I have edited the diagram anyway to remove the confusion...
Comments.UserDisplayName: AlwaysLearningNewStuff
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-12-05T05:42:55.870Z
Comments.Text: Sorry; I interpreted it as "given the position below, I played `b6-b5`". I see what you meant now. Thanks for clarifying though.
Comments.UserDisplayName: Henry Keiter
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-12-05T05:44:40.297Z
Comments.Text: @HenryKeiter: No problem at all. I was playing many blitz games vs computer and got into many instructive positions. I used online FEN generator in multiple tabs in my browser so I can record them all. That is why I had to type a fast question, skimping on details...
Comments.UserDisplayName: AlwaysLearningNewStuff
Tags: <analysis>
Title: Does ...b5 give Black an advantage?
ThreadText: # Does ...b5 give Black an advantage?
  
  (Asked by: username_0 on 2014-12-04)
  
  After being squeezed for an entire game I got the chance to ease my position with a pawn exchange. Incidentally, this would open lines for my pieces to attack opponent's weakened king. I played `...b6-b5` in the position below, and won. Computer played badly so I ask here for help to determine objective assessment of the below position -> does `...b6-b5` give equality for Black or can he aim for more?
  
  ```
  [Title "Black to move"]
  [fen "2r3k1/p4p1p/qp2p1p1/4Q3/2PR1P2/P7/1P4PP/7K b - - 0 1"]
  
  1...b5
  
  ```
  
  ## EDIT:
  
  To help the viewers understand the nature of this question, here are the lines I saw that convinced me that Black suddenly gets good chances after `...b5` :
  
  ```
  [Title "Black to move"]
  [fen "2r3k1/p4p1p/qp2p1p1/4Q3/2PR1P2/P7/1P4PP/7K b - - 0 1"]
  
  1...b5 2.c5 (2.Rd7 (2.cxb5? Rc1+) 2...bxc4 3.Qf6 Rf8 4.Qe7 {Trying to win back the pawn} c3! {With the threat of Qf1 checkmate, and cxb2 Black should win in my opinion} ) 2...b4! {Threatening Qf1 checkmate} 3.Qe3 $8 bxa3 4.bxa3 $8 (4.Qxa3? Qf1$) 4...Qf1 5.Qg1 Qxg1+ 6.Kxg1 Rxc5
  
  ```
  
  I think `2.Rd6` was played in the game but I can't remember what happened nor what I had in mind as a response... Since it is clear that after that move Black must defend, my question is answered -> Black can not aim for more than an equality :(
  
  **Tags:** analysis
  
  > **Comments:**
  > **username_1**: `...b6-b5` is impossible in the given position. Should that pawn be on `b6`, I assume?  
  > **username_0**: @username_1: I played `...b6-b5` as a last move, I clearly stated that in my post. I have edited the diagram anyway to remove the confusion...  
  > **username_1**: Sorry; I interpreted it as "given the position below, I played `b6-b5`". I see what you meant now. Thanks for clarifying though.  
  > **username_0**: @username_1: No problem at all. I was playing many blitz games vs computer and got into many instructive positions. I used online FEN generator in multiple tabs in my browser so I can record them all. That is why I had to type a fast question, skimping on details...  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2014-12-05. Score: 3 | Accepted answer
  
  2. Rd6 followed up with 3. c5 looks strong for White, unless I am missing some obvious tactics.
  
  > **Comments:**
  > **username_0**: +1, I completely missed that move in my calculation, see my update above. I think it was actually played in the game but forgot how I played...  
  
  ---
  
  