user11144: Base: Queen first, lose (or draw) later

What is the most economic position in a pawn endgame where Black queens first, but only draws, White pawn(s) not higher than rank 5 on time of Black queening? (This subsumes ranks 6 and 7)


user8860: 1+1, 2nd rank (from Black's side):
[Title "Black to play -- draw"]
[FEN "8/8/8/k7/8/K7/Pp6/8 b - - 0 1"]

1. b1=Q

(Even 0+1, if we assume that Black will Queen first and ask questions later)

user11144: An answer (maybe unique) is (seen from Black)
[FEN "8/4K3/8/5P2/8/2k5/3p4/8 b - - 0 1"]

where after 1...d1Q 2.f6 it's the usual draw
of queen against bishop pawn. The point is that the
black King stands very unfortunate: 2...Qe1+ 3.Kf8
and 3...Qb4+ isn't possible (thus f7 can't be
impeded and the bK is out of the winning zone either).
This end position BTW is the heart of the
following brilliant study:
[FEN "5K2/2p5/8/2k5/8/2P5/4P3/8 w - - 0 0"]

Mikhail Zinar, Shakhmaty v SSSR 1981, 1st special prize, 1.Kg7!!
What?? Why not 1.Ke7 or 1.Kf7? 1.Ke7? Kc4 is obvious: either Black
gets both pawns or again Q vs bishop pawn arises, this time with
black K already on b2. And after 1.Kf7? Kd5! we have mutual
zugzwang, White's only try is 2.Kf6 Kc4 3.e4 Kxc3 and so on,
where White queens even another move earlier, but now Black
plays the K to d2 and we have the above position (with mirrored
colors)! Thus 1.Kg7! Kd5 (Kc4 is easy, as above, again White
queens another move earlier and Qg5+ wins in the end, unimpeded by
a Kf6) 2.Kf7! and Black is in zugzwang. (Running to c3 is, as
seen, one move short, running to Pe2 hopeless either.)

11144: <p>Base: <a href="https://chess.stackexchange.com/questions/40655/queen-first-lose-or-draw-later">Queen first, lose (or draw) later</a></p>
<ol start="2">
<li>What is the most economic position in a pawn endgame where Black queens first, but only draws, White pawn(s) not higher than rank 5 on time of Black queening? (This subsumes ranks 6 and 7)</li>
</ol>
 8860: <p>1+1, 2nd rank (from Black's side):</p>
<pre><code>[Title &quot;Black to play -- draw&quot;]
[FEN &quot;8/8/8/k7/8/K7/Pp6/8 b - - 0 1&quot;]

1. b1=Q
</code></pre>
<p>(Even 0+1, if we assume that Black will Queen first and ask questions later)</p>
 11144: <p>An answer (maybe unique) is (seen from Black)</p>
<pre><code>[FEN &quot;8/4K3/8/5P2/8/2k5/3p4/8 b - - 0 1&quot;]
</code></pre>
<p>where after 1...d1Q 2.f6 it's the usual draw
of queen against bishop pawn. The point is that the
black King stands very unfortunate: 2...Qe1+ 3.Kf8
and 3...Qb4+ isn't possible (thus f7 can't be
impeded and the bK is out of the winning zone either).</p>
<p>This end position BTW is the heart of the
following brilliant study:</p>
<pre><code>[FEN &quot;5K2/2p5/8/2k5/8/2P5/4P3/8 w - - 0 0&quot;]
</code></pre>
<p>Mikhail Zinar, Shakhmaty v SSSR 1981, 1st special prize, 1.Kg7!!</p>
<p>What?? Why not 1.Ke7 or 1.Kf7? 1.Ke7? Kc4 is obvious: either Black
gets both pawns or again Q vs bishop pawn arises, this time with
black K already on b2. And after 1.Kf7? Kd5! we have mutual
zugzwang, White's only try is 2.Kf6 Kc4 3.e4 Kxc3 and so on,
where White queens even another move earlier, but now Black
plays the K to d2 and we have the above position (with mirrored
colors)! Thus 1.Kg7! Kd5 (Kc4 is easy, as above, again White
queens another move earlier and Qg5+ wins in the end, unimpeded by
a Kf6) 2.Kf7! and Black is in zugzwang. (Running to c3 is, as
seen, one move short, running to Pe2 hopeless either.)</p>
