Answers.Body: <p>No, it is checkmate. Even if Pb4 is pinned, it still controls square c5, preventing the black king to move there.</p>
  
  <p>Check rules 3.9.1 and 3.9.2 of the <a href="http://fide.com/fide/handbook.html?id=208&amp;view=article" rel="nofollow noreferrer">laws</a> of chess.</p>
  
  <blockquote>
    <p>3.9.1 
    The king is said to be 'in check' if it is attacked by one or more of the opponent's pieces, <strong>even if such pieces are constrained from moving to the square occupied by the king because they would then leave or place their own king in check</strong>.</p>
    
    <p>3.9.2<br>
    No piece can be moved that will either expose the king of the same colour to check or leave that king in check.</p>
  </blockquote>
  
  <p>(emphasis mine)</p>
  
  <p>1...Kc5 is illegal.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-02-14T12:19:50.673Z
Answers.LastActivityDate: 2018-02-14T12:48:09.233Z
Answers.LastEditDate: 2018-02-14T12:48:09.233Z
Answers.UserDisplayName: Evargalo
Body: <p><a href="https://i.sstatic.net/CaYM0.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/CaYM0.png" alt="enter image description here"></a></p>
  
  <p>Could the black king move to C5?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2018-02-14T12:23:08.047Z
Comments.Text: related: https://chess.stackexchange.com/questions/1515/bizarre-pin-rule-pinned-pieces-do-not-attack?rq=1
Comments.UserDisplayName: Evargalo
Tags: <checkmate>
Title: Could the black king move to C5?
ThreadText: # Could the black king move to C5?
  
  (Asked by: username_0 on 2018-02-14)
  
  [![enter image description here](https://i.sstatic.net/CaYM0.png)](https://i.sstatic.net/CaYM0.png)
  
  Could the black king move to C5?
  
  **Tags:** checkmate
  
  > **Comments:**
  > **username_1**: related: https://chess.stackexchange.com/questions/1515/bizarre-pin-rule-pinned-pieces-do-not-attack?rq=1  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2018-02-14. Score: 3 | Accepted answer
  
  No, it is checkmate. Even if Pb4 is pinned, it still controls square c5, preventing the black king to move there.
  
  Check rules 3.9.1 and 3.9.2 of the [laws](http://fide.com/fide/handbook.html?id=208&view=article) of chess.
  
  > 3.9.1
  > The king is said to be 'in check' if it is attacked by one or more of the opponent's pieces, **even if such pieces are constrained from moving to the square occupied by the king because they would then leave or place their own king in check**.
  >
  > 3.9.2  
  > No piece can be moved that will either expose the king of the same colour to check or leave that king in check.
  
  (emphasis mine)
  
  1...Kc5 is illegal.
  
  
  ---
  
  