Answers.Body: <p>I just remembered a class of chess problem; see item 267 of <a href="https://timkr.home.xs4all.nl/chess2/diary_14.htm" rel="nofollow noreferrer">Tim Krabbé's Open Chess Diary</a> (his whole site is highly recommended):</p>
  
  <pre><code>[Title "White mates in 7, Noam Elkies, 2004."]
  [FEN "KBk5/P1P4p/2Pp3P/P6p/2p3rP/2P3pB/6P1/8 w KQkq - 0 1"]
  </code></pre>
  
  <p>Spoiler: White has some choices here, he can choose different move orders. <em>But it's always checkmate on move 7, no matter what.</em></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-03-25T20:02:51.587Z
Answers.LastActivityDate: 2020-01-15T14:04:20.140Z
Answers.LastEditDate: 2020-01-15T14:04:20.140Z
Answers.UserDisplayName: RemcoGerlich
Answers.Body: <p>The current record for most <strong>forced</strong> checkmates in a legal position with no promoted pieces is 29:</p>
  <pre><code>[Title &quot;Harold Holgate Cross, The Problemist FCS Apr 1936, 2251&quot;]
  [StartFlipped &quot;0&quot;]
  [fen &quot;8/1b6/p1N5/P1r5/P3KPr1/QBk1NRP1/P2R1P2/4B3 w KQkq - 0 1&quot;]
  </code></pre>
  <p><a href="https://pdb.dieschwalbe.de/" rel="nofollow noreferrer">PDB</a> has it at id P1178654. White is to move.</p>
  <p>(For the record where the position must be legal and may have promoted pieces, see Rewan Demontay's answer.)</p>
  <p>One source is Dickins &amp; Ebert, &quot;100 Classics of the Chessboard&quot;, no.94b</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-03-30T07:29:17.397Z
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Answers.UserDisplayName: Rosie F
Answers.Body: <p>I found two cases of <strong>55</strong> forced mates with promoted pieces in Tim Krabbe’s <a href="https://timkr.home.xs4all.nl/chess2/diary.htm" rel="nofollow noreferrer">Diary Entry #383</a>.</p>
  <pre><code>[Title &quot;Ludwig Zagler, Feenschach 1972, 55 Forced Mates In 1&quot;]
  [FEN &quot;1rB1Q1Q1/1PRQ3Q/2b2k2/2pQ1N1Q/4KRPp/5N2/1R6/B3nn1b w - - 0 1&quot;]
  </code></pre>
  <hr />
  <pre><code>[Title &quot;Sampsa Lahtonen, Tim Krabbe's Website Diary Entry #383 2008, 55 Forced Mates In 1&quot;]
  [FEN &quot;B3n1bb/1R6/4pN2/4KRPp/2pQ1N1Q/2b2k2/1PRQ3Q/1rB1Q1Q1 w - - 0 1&quot;]
  </code></pre>
  <p>@Rosie F’s <a href="https://chess.stackexchange.com/a/24067/15543">answer</a> contains the record without promoted piece,</p>
  
Answers.ContentLicense: CC BY-SA 4.0
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Answers.LastEditDate: 2021-06-09T23:29:16.510Z
Answers.UserDisplayName: Rewan Demontay
Body: <p>I am looking for a position in which all possible moves are checkmate. This means, that if the player does not want to checkmate the opponent, because for example he feels sorry for him, even in that case he is forced to checkmate him. He cannot avoid it. Can you tell me an example? White or black does not matter.</p>
  
  <p>Also, I feel this can be done only if there is a very small number of possible moves. For example 1 or 2.</p>
  
Tags: <checkmate><forced-move>
Title: A position in which checkmate is forced (obligatory)
ThreadText: # A position in which checkmate is forced (obligatory)
  
  (Asked by: username_0 on 2019-03-25)
  
  I am looking for a position in which all possible moves are checkmate. This means, that if the player does not want to checkmate the opponent, because for example he feels sorry for him, even in that case he is forced to checkmate him. He cannot avoid it. Can you tell me an example? White or black does not matter.
  
  Also, I feel this can be done only if there is a very small number of possible moves. For example 1 or 2.
  
  **Tags:** checkmate, forced-move
  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_1 on 2019-03-25. Score: 11
  
  I just remembered a class of chess problem; see item 267 of Tim Krabbé's Open Chess Diary (his whole site is highly recommended):
  [Title "White mates in 7, Noam Elkies, 2004."]
  [FEN "KBk5/P1P4p/2Pp3P/P6p/2p3rP/2P3pB/6P1/8 w KQkq - 0 1"]
  
  Spoiler: White has some choices here, he can choose different move orders. But it's always checkmate on move 7, no matter what.
  
  
  ---
  
  ### Answer by username_2 on 2019-03-30. Score: 7
  
  The current record for most forced checkmates in a legal position with no promoted pieces is 29:
  [Title "Harold Holgate Cross, The Problemist FCS Apr 1936, 2251"]
  [StartFlipped "0"]
  [fen "8/1b6/p1N5/P1r5/P3KPr1/QBk1NRP1/P2R1P2/4B3 w KQkq - 0 1"]
  
  PDB has it at id P1178654. White is to move.
  (For the record where the position must be legal and may have promoted pieces, see username_3's answer.)
  One source is Dickins & Ebert, "100 Classics of the Chessboard", no.94b
  
  
  ---
  
  ### Answer by username_3 on 2019-03-25. Score: 3
  
  I found two cases of 55 forced mates with promoted pieces in Tim Krabbe’s Diary Entry #383.
  [Title "Ludwig Zagler, Feenschach 1972, 55 Forced Mates In 1"]
  [FEN "1rB1Q1Q1/1PRQ3Q/2b2k2/2pQ1N1Q/4KRPp/5N2/1R6/B3nn1b w - - 0 1"]
  
  
  [Title "Sampsa Lahtonen, Tim Krabbe's Website Diary Entry #383 2008, 55 Forced Mates In 1"]
  [FEN "B3n1bb/1R6/4pN2/4KRPp/2pQ1N1Q/2b2k2/1PRQ3Q/1rB1Q1Q1 w - - 0 1"]
  
  @username_2’s answer contains the record without promoted piece,
  
  
  ---
  
  