user18312: 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.

user8860: 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.

18312: <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>
 8860: <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>
