Answers.Body: <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>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-11-29T16:47:55.710Z
Answers.LastActivityDate: 2014-11-29T16:47:55.710Z
Answers.UserDisplayName: ETD
Body: <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>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-11-27T17:56:07.293Z
Comments.Text: Maybe you should explain more clearly and/or extensively your question.
Comments.UserDisplayName: lodebari
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-11-28T22:16:48.070Z
Comments.Text: nice solution   etd
Comments.UserDisplayName: CognisMantis
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-11-28T23:26:40.900Z
Comments.Text: @ETD Is it possible to hide the solution (or write it in white color, so one does not see the solution unless one marks the text)? Just want to prevent people from accidentally seeing the solution and ruining an interesting puzzle for themselves.
Comments.UserDisplayName: Zvonimir
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-11-29T16:49:25.513Z
Comments.Text: @Zvonimir, now that the question is reopened, I posted a community wiki answer with the solution hidden, and will delete my comment that has the solution. Thanks.
Comments.UserDisplayName: ETD
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-11-30T01:26:49.630Z
Comments.Text: @ETD Very nicely done, thank you as well.
Comments.UserDisplayName: Zvonimir
Tags: <problems><retrograde-analysis>
Title: A conditional retrograde analysis problem
ThreadText: # A conditional retrograde analysis problem
  
  (Asked by: username_0 on 2014-11-27)
  
  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](http://en.chessbase.com/post/the-infamous-1999-chebase-christmas-puzzle-160813) on ChessBase.
  
  **Tags:** problems, retrograde-analysis
  
  > **Comments:**
  > **username_1**: Maybe you should explain more clearly and/or extensively your question.  
  > **username_2**: nice solution   etd  
  > **username_3**: @username_4 Is it possible to hide the solution (or write it in white color, so one does not see the solution unless one marks the text)? Just want to prevent people from accidentally seeing the solution and ruining an interesting puzzle for themselves.  
  > **username_4**: @username_3, now that the question is reopened, I posted a community wiki answer with the solution hidden, and will delete my comment that has the solution. Thanks.  
  > **username_3**: @username_4 Very nicely done, thank you as well.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_4 on 2014-11-29. Score: 11
  
  The solution is as follows:
  
  > 1.e4 Nf6 2.f3 Nxe4 3.Qe2 Ng3 4.Qxe7+ Qxe7+ 5.Kf2 Nxh1#
  
  
  ---
  
  