Answers.Body: <p>Very nice puzzle! Looks like the solution is as follows:</p>
  
  <pre><code>[FEN "8/8/6p1/5pP1/5P1K/5PpP/4p2p/2Q2Bkr w - - 0 1"]
  
  1. Qe1 g2 (1... exf1=Q 2. Kxg3 Qxe1#) (1... exf1=R 2. Qxg3#) (1... exf1=N 2. Qf2+ Kxf2 (2... gxf2)) (1... exf1=B 2. Kxg3) 2. Bxe2# 1-0
  </code></pre>
  
  <p>Interestingly, in the different lines, following results are achieved:</p>
  
  <ul>
  <li>White gives a checkmate</li>
  <li>Black gives a checkmate  </li>
  <li>White is stalemated</li>
  <li>Black is stalemated</li>
  </ul>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-01-06T16:30:01.503Z
Answers.Text: Yes, four different promotions, leading to four different outcomes of the game. I had never seen anything like it :-)
Answers.UserDisplayName: RemcoGerlich
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-01-08T01:06:02.953Z
Answers.Text: Yes, very striking.  Is the Black pawn on g3 needed for soundness?  If not then normally one would remove it; the extra variation 1 . . . g2 2 Bxe2# feels less like a bonus than a distraction from the theme.
Answers.UserDisplayName: Noam D. Elkies
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-01-08T08:28:24.313Z
Answers.Text: Well spotted! As far as I can tell, the g3 pawn is not needed...
Answers.UserDisplayName: GloriaVictis
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-01-09T13:38:10.567Z
Answers.Text: Thanks, but later I noticed that the pawn can't be removed because without it **Ricky Demer**'s try 1 Qc5+ Kxf1 2 Qf2+ would be a cook.  True, this cook can be eliminated in other ways without adding the 1 . . . g2  variation; but there'd still be a dual in the variation 1 Qe1 exf1=B when White could choose between stalemating (2 Kg3, as in the solution) and being stalemated (2 Qf2+, the dual).  So if the 1 . . . g2 line is a distraction it's an unavoidable one.
Answers.UserDisplayName: Noam D. Elkies
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-01-06T15:47:56.410Z
Answers.LastActivityDate: 2016-01-06T15:47:56.410Z
Answers.UserDisplayName: GloriaVictis
Body: <p>I found this hilarious problem and hope people will have fun solving it:</p>
  
  <p>Niels Hoeg, Skakbladet 1907</p>
  
  <pre><code>[FEN "8/8/6p1/5pP1/5P1K/5PpP/4p2p/2Q2Bkr w - - 0 1"]
  </code></pre>
  
  <p>White to end the game in two moves.</p>
  
  <p>In this case, that means that white plays moves so that, no matter what black moves, the game is finished after <em>black's</em> second move at the latest.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-06T14:21:26.373Z
Comments.Text: We do allow puzzle questions like this, don't we?
Comments.UserDisplayName: RemcoGerlich
Tags: <problems>
Title: White to force the end of the game in two moves
ThreadText: # White to force the end of the game in two moves
  
  (Asked by: username_0 on 2016-01-06)
  
  I found this hilarious problem and hope people will have fun solving it:
  
  Niels Hoeg, Skakbladet 1907
  
  ```
  [FEN "8/8/6p1/5pP1/5P1K/5PpP/4p2p/2Q2Bkr w - - 0 1"]
  
  ```
  
  White to end the game in two moves.
  
  In this case, that means that white plays moves so that, no matter what black moves, the game is finished after *black's* second move at the latest.
  
  **Tags:** problems
  
  > **Comments:**
  > **username_0**: We do allow puzzle questions like this, don't we?  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2016-01-06. Score: 13 | Accepted answer
  
  Very nice puzzle! Looks like the solution is as follows:
  
  ```
  [FEN "8/8/6p1/5pP1/5P1K/5PpP/4p2p/2Q2Bkr w - - 0 1"]
  
  1. Qe1 g2 (1... exf1=Q 2. Kxg3 Qxe1#) (1... exf1=R 2. Qxg3#) (1... exf1=N 2. Qf2+ Kxf2 (2... gxf2)) (1... exf1=B 2. Kxg3) 2. Bxe2# 1-0
  
  ```
  
  Interestingly, in the different lines, following results are achieved:
  
  * White gives a checkmate
  * Black gives a checkmate
  * White is stalemated
  * Black is stalemated
  
  > **Comments:**
  > **username_0**: Yes, four different promotions, leading to four different outcomes of the game. I had never seen anything like it :-)  
  > **username_2**: Yes, very striking.  Is the Black pawn on g3 needed for soundness?  If not then normally one would remove it; the extra variation 1 . . . g2 2 Bxe2# feels less like a bonus than a distraction from the theme.  
  > **username_1**: Well spotted! As far as I can tell, the g3 pawn is not needed...  
  > **username_2**: Thanks, but later I noticed that the pawn can't be removed because without it **Ricky Demer**'s try 1 Qc5+ Kxf1 2 Qf2+ would be a cook.  True, this cook can be eliminated in other ways without adding the 1 . . . g2  variation; but there'd still be a dual in the variation 1 Qe1 exf1=B when White could choose between stalemating (2 Kg3, as in the solution) and being stalemated (2 Qf2+, the dual).  So if the 1 . . . g2 line is a distraction it's an unavoidable one.  
  
  ---
  
  