Answers.Body: <p>The Black king is in check from both the White rook and queen, so it's impossible that either piece moved to give a check, it must have been a discovered check on the last move, which makes the White pawn on g6 the likely piece that was last moved.</p>
  <p>White's last move must have been hxg6 en-passant. Which makes Black's previous move g7-g5 to block the check from the White queen.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-12-14T16:26:23.440Z
Answers.Text: In this constellation, it's impossible. It would be possible if the white queen were on e.g. e3 (Rf4-h4++).
Answers.UserDisplayName: xehpuk
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-12-14T07:46:21.913Z
Answers.LastActivityDate: 2020-12-14T07:46:21.913Z
Answers.UserDisplayName: MikeD
Body: <p>Given that this position is legal, and could be reached in a legal game of chess, what were the two last half-movess, or one move for White and one for Black?</p>
  <pre><code>[FEN &quot;5K2/8/6Pk/8/5Q1R/8/8/8 w - - 0 1&quot;]
  </code></pre>
  <p>P.S.: I don't know the source. If someone knows the author, please say so and I will make an edit.</p>
  
Tags: <problems><retrograde-analysis>
Title: Retrograde analysis problem
ThreadText: # Retrograde analysis problem
  
  (Asked by: username_0 on 2020-12-14)
  
  Given that this position is legal, and could be reached in a legal game of chess, what were the two last half-movess, or one move for White and one for Black?
  
  ```
  [FEN "5K2/8/6Pk/8/5Q1R/8/8/8 w - - 0 1"]
  
  ```
  
  P.S.: I don't know the source. If someone knows the author, please say so and I will make an edit.
  
  **Tags:** problems, retrograde-analysis
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2020-12-14. Score: 8
  
  The Black king is in check from both the White rook and queen, so it's impossible that either piece moved to give a check, it must have been a discovered check on the last move, which makes the White pawn on g6 the likely piece that was last moved.
  
  White's last move must have been hxg6 en-passant. Which makes Black's previous move g7-g5 to block the check from the White queen.
  
  > **Comments:**
  > **username_2**: In this constellation, it's impossible. It would be possible if the white queen were on e.g. e3 (Rf4-h4++).  
  
  ---
  
  