user11144: Inspiration
BCLC guessed (see link) that even only 2P can win against Q, even if the Q side has the move, if they are advanced far enough. I quickly checked a few promising position candidates in a tablebase. He is correct, but even more, it is not even true that both pawns have to be on the 7th rank for that! Thus, a little challenge: Find the (at 1st look) unbelievable position where

White has K+Q
Black has K+P+P
White has the move but is lost
White is not in check
One black pawn is only on the 5th row (from White).

Sidenote A: The position might be unique (I guess but I'm not 100% sure). Sidenote B: Due to 50 move rule, the win is longer than the simple shortest mate, but won it is.

user21604: Of course, letting the White king be in check at the beginning seems to be a reasonable approach. Here is a position with a Black pawn on the fifth rank (its fourth rank):
[Title "KQ vs KPP: White to move loses"]
[FEN "Q7/8/8/5p2/8/8/4pk2/3K4 w - - 0 1"]

It is not unique: here is another one:
[Title "KQ vs KPP: White to move loses"]
[FEN "Q7/8/8/4p3/8/8/4pk2/3K4 w - - 0 1"]

and there is even one with a Black pawn on the sixth rank (its third rank)!:
[Title "KQ vs KPP: White to move loses"]
[FEN "Q7/8/5p2/8/8/8/4pk2/3K4 w - - 0 1"]


user14488: After fiddling around for a while with the Syzygy endgame tablebase, I found this position:
[Title "KQ vs. KPP, white is not in check"]
[FEN "3Q4/8/8/2p4K/8/8/2kp4/8 w - - 0 1"]

According to the tablebase, it's mate in 105 against best play by White, which starts with either Qa8 or Kg6.  White can't stop promotion without sacrificing the Queen, and because Black is threatening to promote with check, the resulting KQP vs. KQ endgame is winning for Black.

11144: <p><a href="https://chess.stackexchange.com/questions/33149/how-many-pawns-make-up-for-a-missing-queen-in-the-endgame">Inspiration</a></p>
<p>BCLC guessed (see link) that even only 2P can win against Q, even if the Q side has the move, if they are advanced far enough. I quickly checked a few promising position candidates in a tablebase. He is correct, but even more, it is not even true that both pawns have to be on the 7th rank for that! Thus, a little challenge: Find the (at 1st look) unbelievable position where</p>
<ul>
<li>White has K+Q</li>
<li>Black has K+P+P</li>
<li>White has the move but is lost</li>
<li>White is not in check</li>
<li>One black pawn is only on the 5th row (from White).</li>
</ul>
<p>Sidenote A: The position might be unique (I guess but I'm not 100% sure). Sidenote B: Due to 50 move rule, the win is longer than the simple shortest mate, but won it is.</p>
 21604: <p>Of course, letting the White king be in check at the beginning seems to be a reasonable approach. Here is a <a href="https://syzygy-tables.info/?fen=Q7/8/8/5p2/8/8/4pk2/3K4_w_-_-_0_1" rel="nofollow noreferrer">position</a> with a Black pawn on the fifth rank (its fourth rank):</p>
<pre><code>[Title &quot;KQ vs KPP: White to move loses&quot;]
[FEN &quot;Q7/8/8/5p2/8/8/4pk2/3K4 w - - 0 1&quot;]
</code></pre>
<p>It is not unique: here is <a href="https://syzygy-tables.info/?fen=Q7/8/8/4p3/8/8/4pk2/3K4_w_-_-_0_1" rel="nofollow noreferrer">another one</a>:</p>
<pre><code>[Title &quot;KQ vs KPP: White to move loses&quot;]
[FEN &quot;Q7/8/8/4p3/8/8/4pk2/3K4 w - - 0 1&quot;]
</code></pre>
<p>and there is even one <a href="https://syzygy-tables.info/?fen=Q7/8/5p2/8/8/8/4pk2/3K4_w_-_-_0_1" rel="nofollow noreferrer">with a Black pawn on the sixth rank</a> (its third rank)!:</p>
<pre><code>[Title &quot;KQ vs KPP: White to move loses&quot;]
[FEN &quot;Q7/8/5p2/8/8/8/4pk2/3K4 w - - 0 1&quot;]
</code></pre>
 14488: <p>After fiddling around for a while with the <a href="https://syzygy-tables.info/?fen=3Q4/8/8/2p4K/8/8/2kp4/8_w_-_-_0_1" rel="noreferrer">Syzygy endgame tablebase</a>, I found this position:</p>
<pre><code>[Title &quot;KQ vs. KPP, white is not in check&quot;]
[FEN &quot;3Q4/8/8/2p4K/8/8/2kp4/8 w - - 0 1&quot;]
</code></pre>
<p>According to the tablebase, it's mate in 105 against best play by White, which starts with either Qa8 or Kg6.  White can't stop promotion without sacrificing the Queen, and because Black is threatening to promote with check, the resulting KQP vs. KQ endgame is winning for Black.</p>
