The problem is to find an example of a chess game, which begins with 1.e4 and ends in the fifth move with knight takes rook mate (determining which side gives mate is part of the problem).

This is a famous puzzle. For additional information and its history, see this nice article.

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    Maybe you should explain more clearly and/or extensively your question. – lodebari Nov 27 '14 at 17:56
  • nice solution etd – CognisMantis Nov 28 '14 at 22:16
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    @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. – Zvonimir Nov 28 '14 at 23:26
  • @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. – ETD Nov 29 '14 at 16:49
  • @ETD Very nicely done, thank you as well. – Zvonimir Nov 30 '14 at 1:26

The solution is as follows:

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

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