Answers.Body: <p>It is called a fork or a double attack in a normal case. A normal case is when before the opponent's turn neither piece is attacked and then by the start of your turn 2 pieces (or more) of yours are attacked. In this case, since one brought this situation upon themselves, it is called a self-fork.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-05-17T20:42:19.607Z
Answers.LastActivityDate: 2024-07-21T02:46:10.900Z
Answers.LastEditDate: 2024-07-21T02:46:10.900Z
Answers.UserDisplayName: Starship
Answers.Body: <p>If you move a piece into a position where it can be captured &quot;for free&quot;, you are leaving the piece <em>en prise</em>. White's Rf4 in this game, therefore, leaves two pieces <em>en prise</em>.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-07-22T01:15:07.453Z
Answers.LastActivityDate: 2024-07-22T01:15:07.453Z
Answers.UserDisplayName: Allure
Answers.Body: <p>Re4-f4 was played, but both the rook and bishop were hanging before the move. So I wouldn't call it a self-fork - there is not even one extra piece attacked, let alone the two you are getting in a regular fork.</p>
  <p>I don't know what I would call it though. Misdirection? Overload? Tempo something? Tal attack? :D It is probably rare enough it doesn't have a name.</p>
  <p>Note that there are possible self-fork moves - where a single move adds 2 extra pieces to be attacked. For example: a white pawn was on e4 and moves to e5, with pieces on f4, f3 and d3. Black has a rook on a4, bishop on c6 and queen on g6.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-05-19T17:19:32.853Z
Answers.Text: Maybe I'm just missing something because I'm inexperienced, but wouldn't the Queen be defending the rook when it was on e4? I don't think it was hanging before this.
Answers.UserDisplayName: Twisted Code
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-05-20T17:36:50.157Z
Answers.Text: @TwistedCode Yeah, it wasn't a free piece, but it was attacked by a knight which is a less valuable piece (in general). I believe such pieces are also said to be hanging (if I am wrong, I will correct the above, replacing "hanging" with attacked)
Answers.UserDisplayName: Zizy Archer
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-05-18T08:03:40.550Z
Answers.LastActivityDate: 2023-05-23T12:15:26.327Z
Answers.LastEditDate: 2023-05-23T12:15:26.327Z
Answers.UserDisplayName: Zizy Archer
Answers.Body: <blockquote>
  <p>what do we call a move that allows the opponent to attack two pieces without making another move?</p>
  </blockquote>
  <p>When the opponent makes a move which attacks two pieces at the same time with the same piece it's called a <em>fork</em>, so what you describe is called a <em>self-fork</em>.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-05-17T20:51:10.413Z
Answers.LastActivityDate: 2023-05-17T20:51:10.413Z
Answers.UserDisplayName: Brian Towers
Body: <p>In the position below (Short vs Ponomariov 2003), White has just played Re4-f4, which is allowing the g5 pawn to attack both the rook and the bishop.</p>
  <p>In general, what do we call a move that allows the opponent to attack two pieces without making another move?</p>
  <p><a href="https://i.sstatic.net/Ike5P.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/Ike5P.png" alt="enter image description here" /></a></p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2023-05-17T22:27:09.707Z
Comments.Text: In many cases, you would call such a move a "blunder" :). In general, I'm not sure there's a standard name for it, as it's not a standard motif...
Comments.UserDisplayName: Scounged
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2023-05-18T13:39:56.267Z
Comments.Text: As it turned out, the move is considered a brilliancy. The game continued 22...Qg7 (apparently neither the B nor the R can be taken safely) 23. d6 Kg8 24. d7 Nxd7 25. Rxd7 gxf4 26. Qf3 27. Nxd7 Be3+  and Short eventually won. He ended up with an endgame of Band N against R. The game is [here](https://en.chessbase.com/post/the-unpublished-games-of-nigel-short).
Comments.UserDisplayName: Wastrel
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2023-05-18T21:25:26.753Z
Comments.Text: Wow. If you'd shown me this game without saying who played it, I would have guessed it's AlphaZero in Killer-Rabbit Mode or something.
Comments.UserDisplayName: leftaroundabout
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2023-05-20T14:03:49.243Z
Comments.Text: @Scounged or a sacrifice.
Comments.UserDisplayName: Thorbjørn Ravn Andersen
Tags: <tactics><terminology>
Title: What is the terminology for a move which allows the opponent to attack two pieces without making another move?
ThreadText: # What is the terminology for a move which allows the opponent to attack two pieces without making another move?
  
  (Asked by: username_0 on 2023-05-17)
  
  In the position below (Short vs Ponomariov 2003), White has just played Re4-f4, which is allowing the g5 pawn to attack both the rook and the bishop.
  
  In general, what do we call a move that allows the opponent to attack two pieces without making another move?
  
  [![enter image description here](https://i.sstatic.net/Ike5P.png)](https://i.sstatic.net/Ike5P.png)
  
  **Tags:** tactics, terminology
  
  > **Comments:**
  > **username_1**: In many cases, you would call such a move a "blunder" :). In general, I'm not sure there's a standard name for it, as it's not a standard motif...  
  > **username_2**: As it turned out, the move is considered a brilliancy. The game continued 22...Qg7 (apparently neither the B nor the R can be taken safely) 23. d6 Kg8 24. d7 Nxd7 25. Rxd7 gxf4 26. Qf3 27. Nxd7 Be3+  and Short eventually won. He ended up with an endgame of Band N against R. The game is [here](https://en.chessbase.com/post/the-unpublished-games-of-nigel-short).  
  > **username_3**: Wow. If you'd shown me this game without saying who played it, I would have guessed it's AlphaZero in Killer-Rabbit Mode or something.  
  > **username_4**: @username_1 or a sacrifice.  
  
  ---
  
  ## 4 answers
  
  ### Answer by username_9 on 2023-05-17. Score: 7 | Accepted answer
  
  > what do we call a move that allows the opponent to attack two pieces without making another move?
  
  When the opponent makes a move which attacks two pieces at the same time with the same piece it's called a *fork*, so what you describe is called a *self-fork*.
  
  
  ---
  
  ### Answer by username_5 on 2023-05-17. Score: 12
  
  It is called a fork or a double attack in a normal case. A normal case is when before the opponent's turn neither piece is attacked and then by the start of your turn 2 pieces (or more) of yours are attacked. In this case, since one brought this situation upon themselves, it is called a self-fork.
  
  
  ---
  
  ### Answer by username_6 on 2024-07-22. Score: 3
  
  If you move a piece into a position where it can be captured "for free", you are leaving the piece *en prise*. White's Rf4 in this game, therefore, leaves two pieces *en prise*.
  
  
  ---
  
  ### Answer by username_7 on 2023-05-18. Score: 2
  
  Re4-f4 was played, but both the rook and bishop were hanging before the move. So I wouldn't call it a self-fork - there is not even one extra piece attacked, let alone the two you are getting in a regular fork.
  
  I don't know what I would call it though. Misdirection? Overload? Tempo something? Tal attack? :D It is probably rare enough it doesn't have a name.
  
  Note that there are possible self-fork moves - where a single move adds 2 extra pieces to be attacked. For example: a white pawn was on e4 and moves to e5, with pieces on f4, f3 and d3. Black has a rook on a4, bishop on c6 and queen on g6.
  
  > **Comments:**
  > **username_8**: Maybe I'm just missing something because I'm inexperienced, but wouldn't the Queen be defending the rook when it was on e4? I don't think it was hanging before this.  
  > **username_7**: @TwistedCode Yeah, it wasn't a free piece, but it was attacked by a knight which is a less valuable piece (in general). I believe such pieces are also said to be hanging (if I am wrong, I will correct the above, replacing "hanging" with attacked)  
  
  ---
  
  