user8605: 
Any ideas for this interesting problem?

user7297: The black king threatens to escape via e4, so
8/2Q5/8/3k2K1/8/8/4NP2/8 w - - 3 13

1. f3 Ke6 {(forced)}
2. Nf4#

(sidenote: I'm really divided into putting the solution in a 'spoiler' block with >! (as is customary on Puzzles.SE)

 like this

and the current way, with a diagram to allow playback. It would be very nice if we could put the diagram inside the spoiler.)

8605: <p><a href="https://i.stack.imgur.com/RuHty.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RuHty.png" alt="enter image description here" /></a></p>
<p>Any ideas for this interesting problem?</p>
 7297: <p>The black king threatens to escape via e4, so</p>

<pre><code>8/2Q5/8/3k2K1/8/8/4NP2/8 w - - 3 13

1. f3 Ke6 {(forced)}
2. Nf4#
</code></pre>

<p>(sidenote: I'm really divided into putting the solution in a 'spoiler' block with <code>&gt;!</code> (as is customary on Puzzles.SE)</p>

<blockquote class="spoiler">
  <p> like this</p>
</blockquote>

<p>and the current way, with a diagram to allow playback. It would be very nice if we could put the diagram <em>inside</em> the spoiler.)</p>
