Answers.Body: <p>Assume you have Knights on e5 and c5. If Nc5 captured on d3, you would write:</p>
  
  <p>1...Ncxd3</p>
  
  <p>If Ne5 captured on d3:</p>
  
  <p>1...Nexd3</p>
  
  <p>The key is using the column letter to distinguish pieces.</p>
  
  <p>If the pieces are on the same column, such as Knights on e4 and e6, then you would distinguish via their row numbers. Example:</p>
  
  <p>If Ne4 captured on g5, you would write:</p>
  
  <ol>
  <li>N4xg5</li>
  </ol>
  
  <p>If Ne6 captured on g5, you would write:</p>
  
  <ol>
  <li>N6xg5</li>
  </ol>
  
  <p>If you have the choice of distinguishing between column letter and row number, choose column letter. This isn't required by any means, but it tends to be the convention.  Example -- Rooks on e6 and g4.</p>
  
  <p>If Re6 captured on g6, you should write:</p>
  
  <ol>
  <li>Rexg6 (not R6xg6).</li>
  </ol>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-03-20T20:11:41.427Z
Answers.Text: If you've promoted and have three of a particular piece, you might not be able to use either row or column to disambiguate. For example, with knights on d2, f2 and f6, you'd have to write Nf2xe4 if capturing with that piece.
Answers.UserDisplayName: David Richerby
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Answers.CreationDate: 2018-03-21T01:19:25.117Z
Answers.Text: @David Richerby Yeah that's true, never thought of a case like that before.
Answers.UserDisplayName: Inertial Ignorance
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Answers.CreationDate: 2018-03-20T10:31:26.083Z
Answers.LastActivityDate: 2018-03-20T10:31:26.083Z
Answers.UserDisplayName: Inertial Ignorance
Answers.Body: <p>Your two knights are on d2 and f2.</p>
  
  <pre><code>Ndxe4, Nfxe4,
  </code></pre>
  
  <p>Your two knights are on f2 and f6.</p>
  
  <pre><code>N2xe4, N6xe4
  </code></pre>
  
  <p>Your three knights are on d2, f2 and f6 (you promoted a pawn)</p>
  
  <pre><code>Ndxe4, Nf2xe4, N6xe4
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-03-20T10:21:02.550Z
Answers.Text: And it's not specific to capturing, a normal move in that situation would be Nde4 or Nfe4, N2e4 or N6e4.
Answers.UserDisplayName: RemcoGerlich
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Answers.CreationDate: 2018-03-20T14:55:51.773Z
Answers.Text: This is laid down in the FIDE laws of chess, appendix C.10, where it also states that if you have a choice between specifying ranks or files  specifying the starting file (letter) is preferred to specifying the starting rank (number).
Answers.UserDisplayName: user1583209
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Answers.CreationDate: 2018-03-20T14:59:00.963Z
Answers.Text: In the somewhat artificial situation that you have four pieces with any pair of pieces on the same rank or file (e.g. knights on d2, f2, d6, f6), I'd specify the starting square explicitly, e.g.:Nd2xe4
Answers.UserDisplayName: user1583209
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-03-20T14:59:58.093Z
Answers.Text: Four knights.  Wild game.
Answers.UserDisplayName: Jason P Sallinger
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Answers.Text: @JasonPSallinger Could also be four bishops or four queens.
Answers.UserDisplayName: user1583209
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Answers.Text: Right, but 4 knights?  That takes balls
Answers.UserDisplayName: Jason P Sallinger
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Answers.CreationDate: 2018-03-21T06:55:09.787Z
Answers.Text: @JasonPSallinger Actually you need only three knights/bishops/queens in order to cause ambiguity, e.g. knights on d2, f2 and f6; and the knight from f2 moves.
Answers.UserDisplayName: user1583209
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Answers.Text: @JasonPSallinger: In the bishop case, it would have to be four bishops of the same type, i.e. three promoted pawns.
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Answers.UserDisplayName: SmallChess
Body: <p>When a capture can be made by two rooks, or two knights, etc., how does the notation clarify which piece makes the capture?</p>
  
  <p>For example, if two pawns, one at e4 and one at c4, capture a pawn at d3, the notation will say exd3 or cxd3, sure.  But if two knights capture the same piece, how is that notated?  Or for two rooks, or queens?  In the case of the knight, it would only say Nxd3, but that doesn't clarify which knight took the piece.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2018-03-20T10:01:29.683Z
Comments.Text: In case of doubt, one can always fall back to the "long" notation, e.g. Nf2xd3 or Rd1xd3. But I guess that is not exactly what you are looking for.
Comments.UserDisplayName: Annatar
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2018-03-20T10:02:28.520Z
Comments.Text: By the way, you should replace the word "attack" with "capture" in your first sentence. "Attack" in chess generally only means the threat to take a piece, not the actual act of doing so.
Comments.UserDisplayName: Annatar
Tags: <notation>
Title: How is notation done for similar pieces capturing the same piece?
ThreadText: # How is notation done for similar pieces capturing the same piece?
  
  (Asked by: username_0 on 2018-03-20)
  
  When a capture can be made by two rooks, or two knights, etc., how does the notation clarify which piece makes the capture?
  
  For example, if two pawns, one at e4 and one at c4, capture a pawn at d3, the notation will say exd3 or cxd3, sure. But if two knights capture the same piece, how is that notated? Or for two rooks, or queens? In the case of the knight, it would only say Nxd3, but that doesn't clarify which knight took the piece.
  
  **Tags:** notation
  
  > **Comments:**
  > **username_1**: In case of doubt, one can always fall back to the "long" notation, e.g. Nf2xd3 or Rd1xd3. But I guess that is not exactly what you are looking for.  
  > **username_1**: By the way, you should replace the word "attack" with "capture" in your first sentence. "Attack" in chess generally only means the threat to take a piece, not the actual act of doing so.  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_4 on 2018-03-20. Score: 15 | Accepted answer
  
  Your two knights are on d2 and f2.
  Ndxe4, Nfxe4,
  
  Your two knights are on f2 and f6.
  N2xe4, N6xe4
  
  Your three knights are on d2, f2 and f6 (you promoted a pawn)
  Ndxe4, Nf2xe4, N6xe4
  
  > **Comments:**
  > **username_5**: And it's not specific to capturing, a normal move in that situation would be Nde4 or Nfe4, N2e4 or N6e4.  
  > **username_6**: This is laid down in the FIDE laws of chess, appendix C.10, where it also states that if you have a choice between specifying ranks or files  specifying the starting file (letter) is preferred to specifying the starting rank (number).  
  > **username_6**: In the somewhat artificial situation that you have four pieces with any pair of pieces on the same rank or file (e.g. knights on d2, f2, d6, f6), I'd specify the starting square explicitly, e.g.:Nd2xe4  
  > **username_0**: Four knights.  Wild game.  
  > **username_6**: @JasonPSallinger Could also be four bishops or four queens.  
  > **username_0**: Right, but 4 knights?  That takes balls  
  > **username_6**: @JasonPSallinger Actually you need only three knights/bishops/queens in order to cause ambiguity, e.g. knights on d2, f2 and f6; and the knight from f2 moves.  
  > **username_6**: @JasonPSallinger: In the bishop case, it would have to be four bishops of the same type, i.e. three promoted pawns.  
  
  ---
  
  ### Answer by username_2 on 2018-03-20. Score: 1
  
  Assume you have Knights on e5 and c5. If Nc5 captured on d3, you would write:
  
  1...Ncxd3
  
  If Ne5 captured on d3:
  
  1...Nexd3
  
  The key is using the column letter to distinguish pieces.
  
  If the pieces are on the same column, such as Knights on e4 and e6, then you would distinguish via their row numbers. Example:
  
  If Ne4 captured on g5, you would write:
  
  1. N4xg5
  
  If Ne6 captured on g5, you would write:
  
  1. N6xg5
  
  If you have the choice of distinguishing between column letter and row number, choose column letter. This isn't required by any means, but it tends to be the convention. Example -- Rooks on e6 and g4.
  
  If Re6 captured on g6, you should write:
  
  1. Rexg6 (not R6xg6).
  
  > **Comments:**
  > **username_3**: If you've promoted and have three of a particular piece, you might not be able to use either row or column to disambiguate. For example, with knights on d2, f2 and f6, you'd have to write Nf2xe4 if capturing with that piece.  
  > **username_2**: @username_3 Yeah that's true, never thought of a case like that before.  
  
  ---
  
  