Answers.Body: <p>If black plays QxR then white plays Qc3+ with mate to follow. Black's Qg7 stops the mate. With the black queen on b2 white cannot play Qc3. The Re2 move is to divert the black queen</p>
  
  <pre><code>[FEN "5r1k/1pQ4p/3nB1p1/3P4/5p2/1P5P/rq5P/4R1RK w - - 0 1"]
  
  1. Re2 Qxe2 2. Qc3+ Qe5 3. Qxe5+ Rf6 4. Qxf6#
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-08-14T11:42:32.367Z
Answers.Text: Damn, the worst part is I always get tricked by these kind of moves too!
Answers.UserDisplayName: Yousend
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-08-14T11:19:28.090Z
Answers.LastActivityDate: 2020-01-05T00:27:40.413Z
Answers.LastEditDate: 2020-01-05T00:27:40.413Z
Answers.UserDisplayName: Brian Towers
Body: <p>I was on the chess.com app this morning doing the daily puzzle and it wanted me to play Re2. This is questionable to me, because it just delays the mate, but I figured I might have missed something. Then what really perplexed me is that Black then plays Qg7. It appears to me that Black is sacrificing his queen for no reason when he has a mate in 2. I don't see how White has time to mount an attack on Black or come back to defend in time. What am I missing? </p>
  
  <pre><code>[FEN "5r1k/1pQ4p/3nB1p1/3P4/5p2/1P5P/rq5P/4R1RK w - - 0 1"]
  
  1. Re2 Qg7 2. Qxg7+ Kxg7 3. Rxa2
  </code></pre>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-08-14T11:18:53.153Z
Comments.Text: Hint: long diagonal
Comments.UserDisplayName: Dag Oskar Madsen
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-08-14T11:38:46.713Z
Comments.Text: You can also try the analysis board (the icon with the magnifying glass) to see what could happen with alternative moves. Above the analysis board, it shows what the computer thinks is the best move (may keep changing as it calculates deeper).
Comments.UserDisplayName: itub
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-08-15T10:00:31.497Z
Comments.Text: This is a tactical motif known as diversion, and might be considered a bit more advanced than pins and forks.
Comments.UserDisplayName: Scounged
Tags: <puzzles><beginner>
Title: Why was this move in a puzzle?
ThreadText: # Why was this move in a puzzle?
  
  (Asked by: username_0 on 2018-08-14)
  
  I was on the chess.com app this morning doing the daily puzzle and it wanted me to play Re2. This is questionable to me, because it just delays the mate, but I figured I might have missed something. Then what really perplexed me is that Black then plays Qg7. It appears to me that Black is sacrificing his queen for no reason when he has a mate in 2. I don't see how White has time to mount an attack on Black or come back to defend in time. What am I missing? 
  [FEN "5r1k/1pQ4p/3nB1p1/3P4/5p2/1P5P/rq5P/4R1RK w - - 0 1"]
  
  1. Re2 Qg7 2. Qxg7+ Kxg7 3. Rxa2
  
  **Tags:** puzzles, beginner
  
  > **Comments:**
  > **username_1**: Hint: long diagonal  
  > **username_2**: You can also try the analysis board (the icon with the magnifying glass) to see what could happen with alternative moves. Above the analysis board, it shows what the computer thinks is the best move (may keep changing as it calculates deeper).  
  > **username_3**: This is a tactical motif known as diversion, and might be considered a bit more advanced than pins and forks.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_4 on 2018-08-14. Score: 15 | Accepted answer
  
  If black plays QxR then white plays Qc3+ with mate to follow. Black's Qg7 stops the mate. With the black queen on b2 white cannot play Qc3. The Re2 move is to divert the black queen
  [FEN "5r1k/1pQ4p/3nB1p1/3P4/5p2/1P5P/rq5P/4R1RK w - - 0 1"]
  
  1. Re2 Qxe2 2. Qc3+ Qe5 3. Qxe5+ Rf6 4. Qxf6#
  
  > **Comments:**
  > **username_0**: Damn, the worst part is I always get tricked by these kind of moves too!  
  
  ---
  
  