Answers.Body: <h2>9 moves</h2>
  <p>In <a href="https://chess.stackexchange.com/q/4963/86">the linked thread</a> (not quite a duplicate), a valid <a href="https://chess.stackexchange.com/a/4965/86">answer</a> is posed to this question:</p>
  <blockquote>
  <p>You mean like this?</p>
  </blockquote>
  <pre><code>[Title &quot;Vilhelm Röpke, Skakbladet 1942, Mate In 6&quot;]
  [FEN &quot;K1k5/P1Pp4/1p1P4/8/p7/P2P4/8/8 w - - 0 1&quot;]
  </code></pre>
  <blockquote>
  <p>White mates in 6.</p>
  </blockquote>
  <blockquote>
  <p>I guess that's 9 consecutive forced moves. It would be eleven except for black's choice of promotion piece on his fifth move. I don't know if it's a record, and I don't know who composed this classic chess problem.</p>
  </blockquote>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-05-21T13:43:17.267Z
Answers.Text: I miss understood what the OP was asking, I end up deleting my answer and upvoting yours since it goes straight to the point.
Answers.UserDisplayName: dreamcrash
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-05-21T18:32:21.237Z
Answers.Text: Can c1=Q be considered forced? I mean surely I had C1=N, C1=B, C1=R
Answers.UserDisplayName: Alan
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-06-12T10:32:47.657Z
Answers.Text: @Alan It's not counted in the 9 half-moves for that reason. ("It would be eleven except for black's choice of promotion...").
Answers.UserDisplayName: Daniel
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2014-05-21T11:22:45.743Z
Answers.LastActivityDate: 2021-01-28T23:35:42.047Z
Answers.LastEditDate: 2021-01-28T23:35:42.047Z
Answers.UserDisplayName: Daniel
Body: <p>I am looking for positions from where every move is forced up to a certain depth. If the original position (or one in between) occurs again, the sequence is finished there.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-04-03T13:41:41.223Z
Comments.Text: Do you mean that every move of both players is forced or of just one player? (In the first case, mates in N moves are out of the question, because the moves of the losing side are not forced as his decision makes no difference.)
Comments.UserDisplayName: JiK
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-04-03T16:00:53.487Z
Comments.Text: Yes, it's about forced sequences for both players. It doesn't need to end in checkmate, the only requirement is that there is just one possible move for each player for a long time.
Comments.UserDisplayName: chaosflaws
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-04-03T20:49:13.293Z
Comments.Text: I think it eas not intended by the one asking the other question but it is trivial to construct a position that is forced to repeat again and again, making that sequence infinite.
Comments.UserDisplayName: chaosflaws
Tags: <problems><forced-move>
Title: What is the longest non-cyclic forced sequence of moves?
ThreadText: # What is the longest non-cyclic forced sequence of moves?
  
  (Asked by: username_0 on 2014-03-23)
  
  I am looking for positions from where every move is forced up to a certain depth. If the original position (or one in between) occurs again, the sequence is finished there.
  
  **Tags:** problems, forced-move
  
  > **Comments:**
  > **username_1**: Do you mean that every move of both players is forced or of just one player? (In the first case, mates in N moves are out of the question, because the moves of the losing side are not forced as his decision makes no difference.)  
  > **username_0**: Yes, it's about forced sequences for both players. It doesn't need to end in checkmate, the only requirement is that there is just one possible move for each player for a long time.  
  > **username_0**: I think it eas not intended by the one asking the other question but it is trivial to construct a position that is forced to repeat again and again, making that sequence infinite.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2014-05-21. Score: 5
  
  ## 9 moves
  
  In [the linked thread](https://chess.stackexchange.com/q/4963/86) (not quite a duplicate), a valid [answer](https://chess.stackexchange.com/a/4965/86) is posed to this question:
  
  > You mean like this?
  
  ```
  [Title "Vilhelm Röpke, Skakbladet 1942, Mate In 6"]
  [FEN "K1k5/P1Pp4/1p1P4/8/p7/P2P4/8/8 w - - 0 1"]
  
  ```
  
  > White mates in 6.
  
  > I guess that's 9 consecutive forced moves. It would be eleven except for black's choice of promotion piece on his fifth move. I don't know if it's a record, and I don't know who composed this classic chess problem.
  
  > **Comments:**
  > **username_3**: I miss understood what the OP was asking, I end up deleting my answer and upvoting yours since it goes straight to the point.  
  > **username_4**: Can c1=Q be considered forced? I mean surely I had C1=N, C1=B, C1=R  
  > **username_2**: @username_4 It's not counted in the 9 half-moves for that reason. ("It would be eleven except for black's choice of promotion...").  
  
  ---
  
  