user11144: Give a legal position which is "dead" but would take (assuming the §5.2.2 about dead positions wouldn't exist) maximally long to play out until an automatic draw by fivefold, 75 moves or statemate results.
[FEN "5b1k/4p1pB/4PbP1/8/8/8/8/7K w KQkq - 0 1"]

This is a non-example (in a help-game e7 can be taken eventually) so the obvious idea adding more bishops doesn't work!

user27380: Here is such a position.
[FEN "1k6/p1p1p1p1/P1P1P1P1/8/8/8/PKP1P1P1/8 b - - 0 1"] 
[startlfipped ""] 

With Black to move, no side can make any progress. White still has plenty of pawn moves to make to reset the 75 move counter. It's a legal position as well.
Interestingly, this is a position that humans understand better than engines!
It's a draw, even if Stockfish insists it's +7.
EDIT:
As pointed out in the comments, adding 4 black pawns that White can take adds another 12 resets to the 50 (75 if unclaimed) move counter.
Also, a wBh7 that cannot escape and will eventually be taken would add yet one more reset but this is not possible since this bishop never could escape f1 to get there.
[FEN "kR6/p1p1p1p1/P1P1P1P1/p1p1p1p1/8/8/PKP1P1P1/8 b - - 0 1"] 
[startlfipped ""] 


11144: <p>Give a legal position which is &quot;dead&quot; but would take (assuming the §5.2.2 about dead positions wouldn't exist) maximally long to play out until an automatic draw by fivefold, 75 moves or statemate results.</p>
<pre><code>[FEN &quot;5b1k/4p1pB/4PbP1/8/8/8/8/7K w KQkq - 0 1&quot;]
</code></pre>
<p>This is a non-example (in a help-game e7 can be taken eventually) so the obvious idea adding more bishops doesn't work!</p>
 27380: <p>Here is such a position.</p>
<pre><code>[FEN &quot;1k6/p1p1p1p1/P1P1P1P1/8/8/8/PKP1P1P1/8 b - - 0 1&quot;] 
[startlfipped &quot;&quot;] 
</code></pre>
<p>With Black to move, no side can make any progress. White still has plenty of pawn moves to make to reset the 75 move counter. It's a legal position as well.</p>
<p>Interestingly, this is a position that humans understand better than engines!
It's a draw, even if <a href="https://lichess.org/analysis/fromPosition/1k6/p1p1p1p1/P1P1P1P1/8/8/8/PKP1P1P1/8_b_-_-_0_1" rel="nofollow noreferrer">Stockfish</a> insists it's +7.</p>
<p><strong>EDIT:</strong></p>
<p>As pointed out in the comments, adding 4 black pawns that White can take adds another 12 resets to the 50 (75 if unclaimed) move counter.</p>
<p>Also, a wBh7 that cannot escape and will eventually be taken would add yet one more reset but this is not possible since this bishop never could escape f1 to get there.</p>
<pre><code>[FEN &quot;kR6/p1p1p1p1/P1P1P1P1/p1p1p1p1/8/8/PKP1P1P1/8 b - - 0 1&quot;] 
[startlfipped &quot;&quot;] 
</code></pre>
