Answers.Body: <p>The original position has the White King on a4, no White pawn.  It's the end of a composed study by Gorgiev that I find as #753 in Sutherland and Lommer's <em>1234 Modern End-Game Studies</em> (1938, Dover reprint 1968), pages 126 and 290.  The full study is:</p>
  <pre><code>[Title &quot;White to move and win (Gorgiev, Pravda 1928: Mention)&quot;]
  [FEN &quot;1k6/rp6/p7/p5B1/K7/8/8/7R w - - 0 1&quot;]
  
  1.Rh8+ Kc7 2.Bd8+ Kc6 3.Bb6! Kxb6 4.Rc8! 1-0
  </code></pre>
  <p>The final position is mutual Zugzwang: Black loses (the only legal move is Ra8, and then 5.Rxa8 wins easily) but would draw if it were White's move.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-04-15T19:48:24.977Z
Answers.LastActivityDate: 2021-04-15T19:48:24.977Z
Answers.UserDisplayName: Noam D. Elkies
Body: <p>I am trying to remember a puzzle position, or maybe was it originated from a real game, i dont remember.</p>
  <blockquote class="spoiler">
  <p> After Rook c8, we have a nice zugzwang, which forces black to have as only legal move Rook from a7 to a8, making it <em>en prise</em> for white's rook.</p>
  </blockquote>
  <p>Something like (white to move):</p>
  <pre><code>7R/rp6/pk6/p7/P7/8/1K6/8 w - - 0 1
  </code></pre>
  <p>I would like to know where is this puzzle/game from. I'm not sure that this was the exact position, but it was quite similar.</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2021-04-15T14:49:56.607Z
Comments.Text: This cries to be the end of a study. The database of Harold van der Heijden is your friend :-)
Comments.UserDisplayName: Hauke Reddmann
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2021-04-15T21:22:53.013Z
Comments.Text: It *is* the end of a study, but slightly misremembered.
  Fortunately I read *1234* early enough that I remembered this Zugzwang set-up
  even with the Ka4 changed to a pawn.
Comments.UserDisplayName: Noam D. Elkies
Tags: <problems><puzzles><zugzwang>
Title: Trying to remember a zugzwang puzzle/study position
ThreadText: # Trying to remember a zugzwang puzzle/study position
  
  (Asked by: username_0 on 2021-04-15)
  
  I am trying to remember a puzzle position, or maybe was it originated from a real game, i dont remember.
  
  > After Rook c8, we have a nice zugzwang, which forces black to have as only legal move Rook from a7 to a8, making it *en prise* for white's rook.
  
  Something like (white to move):
  
  ```
  7R/rp6/pk6/p7/P7/8/1K6/8 w - - 0 1
  
  ```
  
  I would like to know where is this puzzle/game from. I'm not sure that this was the exact position, but it was quite similar.
  
  **Tags:** problems, puzzles, zugzwang
  
  > **Comments:**
  > **username_1**: This cries to be the end of a study. The database of Harold van der Heijden is your friend :-)  
  > **username_2**: It *is* the end of a study, but slightly misremembered. Fortunately I read *1234* early enough that I remembered this Zugzwang set-up even with the Ka4 changed to a pawn.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2021-04-15. Score: 9 | Accepted answer
  
  The original position has the White King on a4, no White pawn. It's the end of a composed study by Gorgiev that I find as #753 in Sutherland and Lommer's *1234 Modern End-Game Studies* (1938, Dover reprint 1968), pages 126 and 290. The full study is:
  
  ```
  [Title "White to move and win (Gorgiev, Pravda 1928: Mention)"]
  [FEN "1k6/rp6/p7/p5B1/K7/8/8/7R w - - 0 1"]
  
  1.Rh8+ Kc7 2.Bd8+ Kc6 3.Bb6! Kxb6 4.Rc8! 1-0
  
  ```
  
  The final position is mutual Zugzwang: Black loses (the only legal move is Ra8, and then 5.Rxa8 wins easily) but would draw if it were White's move.
  
  
  ---
  
  