user4335: Here is the problem-find a chess game that begins with 1. e4 and ends on the fifth move with knight takes rook mate, which determines who gives the mate.
This is a famous puzzle. For additional information and its history, see this nice article on ChessBase.

user167: The solution is as follows:

 1.e4 Nf6 2.f3 Nxe4 3.Qe2 Ng3 4.Qxe7+ Qxe7+ 5.Kf2 Nxh1#


4335: <p>Here is the problem-find a chess game that begins with 1. e4 and ends on the fifth move with knight takes rook mate, which determines who gives the mate.</p>
<p>This is a famous puzzle. For additional information and its history, see <a href="http://en.chessbase.com/post/the-infamous-1999-chebase-christmas-puzzle-160813" rel="nofollow noreferrer">this nice article</a> on ChessBase.</p>
 167: <p>The solution is as follows:</p>

<blockquote class="spoiler">
  <p> 1.e4 Nf6 2.f3 Nxe4 3.Qe2 Ng3 4.Qxe7+ Qxe7+ 5.Kf2 Nxh1#</p>
</blockquote>
