user25593: [Title "The Chess Monthly, 11/1860, Helpmate In 3 Moves (Version)"] 
[FEN "6R1/7q/8/5k2/3K1B2/8/8/8 b - - 0 1"]
[startflipped ""]

Now, in this chess problem by Samuel Loyd, both sides work together for a checkmate.  If Black is to move first, how can White give mate in 3 with Black's cooperation?

user8860: Nice one:

 1 Kf6 Ra8! 2 Kg7 Bb8 3 Kh8 Be5#!  ("Indian theme")


25593: <pre><code>[Title &quot;The Chess Monthly, 11/1860, Helpmate In 3 Moves (Version)&quot;] 
[FEN &quot;6R1/7q/8/5k2/3K1B2/8/8/8 b - - 0 1&quot;]
[startflipped &quot;&quot;]
</code></pre>
<p>Now, in this chess problem by Samuel Loyd, both sides work together for a checkmate.  If Black is to move first, how can White give mate in 3 with Black's cooperation?</p>
 8860: <p>Nice one:</p>
<blockquote class="spoiler">
<p> 1 Kf6 Ra8! 2 Kg7 Bb8 3 Kh8 Be5#!  (&quot;Indian theme&quot;)</p>
</blockquote>
