Answers.Body: <p>No, it is not.</p>
  
  <p>FIDE Laws of chess, clause 3.7e:</p>
  
  <blockquote>
    <p>When a pawn reaches the rank furthest from its starting position it
    must be exchanged as part of the same move on the same square for a
    new queen, rook, bishop or knight <strong>of the same colour</strong>.</p>
  </blockquote>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-10-30T03:04:37.660Z
Answers.LastActivityDate: 2014-10-30T03:04:37.660Z
Answers.UserDisplayName: dfan
Body: <p>Is it legal to underpromote a pawn to opponent's pieces? For example, in the below position, promoting White's pawn to a Black knight will be a win.</p>
  <pre><code>[FEN &quot;r7/kPR5/8/K7/8/8/8/8 w - - 0 1&quot;]
  [Title &quot;Underpromotion&quot;]
  </code></pre>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-10-30T15:23:43.657Z
Comments.Text: In your above diagram, either if White plays `bxa8` or `b8`, he can substitute the pawn **only** with **white** bishop, white knight, white rook or a white queen. He can not replace the pawn with black piece.
Comments.UserDisplayName: AlwaysLearningNewStuff
Tags: <rules><pawn-promotion><loopholes>
Title: Underpromoting a pawn
ThreadText: # Underpromoting a pawn
  
  (Asked by: username_0 on 2014-10-30)
  
  Is it legal to underpromote a pawn to opponent's pieces? For example, in the below position, promoting White's pawn to a Black knight will be a win.
  [FEN "r7/kPR5/8/K7/8/8/8/8 w - - 0 1"]
  [Title "Underpromotion"]
  
  **Tags:** rules, pawn-promotion, loopholes
  
  > **Comments:**
  > **username_1**: In your above diagram, either if White plays `bxa8` or `b8`, he can substitute the pawn **only** with **white** bishop, white knight, white rook or a white queen. He can not replace the pawn with black piece.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2014-10-30. Score: 11
  
  No, it is not.
  
  FIDE Laws of chess, clause 3.7e:
  
  > When a pawn reaches the rank furthest from its starting position it
  > must be exchanged as part of the same move on the same square for a
  > new queen, rook, bishop or knight **of the same colour**.
  
  
  ---
  
  