Answers.Body: <p>The point is that after <code>1...Rxe3</code> Black will be winning material, as the sole defender of the white knight has been removed, and a pin tactic is coming. Specifically, after <code>2.Rxe3</code> (anything other than this recapture means Black has just won a piece for nothing) and <code>2...Bxd4</code>, White has no way to stop the follow-up <code>3...Bxe3+</code> since the rook is pinned to the king, and so Black has netted an extra piece anyway.</p>
  
  <pre><code>[FEN "r1bqr1k1/1p3nbp/2pp2p1/2n2P2/p1PN1P2/2N1B1PP/PPQ3B1/R3R1K1 b - - 0 1"]
  
  1...Rxe3 2.Rxe3 Bxd4 *
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-02-09T11:56:02.867Z
Answers.Text: We might need a few more moves, Ed.  Black drops the exchange by `Rxe3`, and then wins the exchange after `Bxd4`. I don't see the white Rook dropping off the board for free. After `Bxd4`, White has 4 pieces that can defend `e3` with one move. One little thing I see is that with the removal of the Knight on `e4`, Black can play `Bxf5` with tempo and gain of a pawn. The solution you presented prevents the disruptive (but maybe bad...) `1. Nxc6 bxc6 2. Bxc6` Rook fork. Perhaps preventing that is the point of the puzzle.
Answers.UserDisplayName: Tony Ennis
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-02-09T12:05:37.310Z
Answers.Text: @TonyEnnis In the position after Bxd4, White has two pieces for a rook, and will win an exchange on e3, thus he will be a piece up even if the Rook does not go for free. Am I missing something?
Answers.UserDisplayName: JiK
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-02-09T12:10:18.213Z
Answers.Text: @JiK Yep, you're right - I miscounted it about 5 times. I neglected to tally the initial Bishop capture.
Answers.UserDisplayName: Tony Ennis
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-02-09T07:28:34.123Z
Answers.LastActivityDate: 2015-02-09T07:28:34.123Z
Answers.UserDisplayName: ETD
Body: <p>Today I was solving a chess problem as following picture : </p>
  
  <pre><code>[fen "r1bqr1k1/1p3nbp/2pp2p1/2n2P2/p1PN1P2/2N1B1PP/PPQ3B1/R3R1K1 b - - 0 1"]
  </code></pre>
  
  <p>The solution given was <code>1...Rxe3</code>, but I did not get the actual benefit of this solution. Can anyone explain this?</p>
  
Tags: <learning><puzzles><bishops>
Title: Chess puzzle that is hard to understand
ThreadText: # Chess puzzle that is hard to understand
  
  (Asked by: username_0 on 2015-02-09)
  
  Today I was solving a chess problem as following picture :
  
  ```
  [fen "r1bqr1k1/1p3nbp/2pp2p1/2n2P2/p1PN1P2/2N1B1PP/PPQ3B1/R3R1K1 b - - 0 1"]
  
  ```
  
  The solution given was `1...Rxe3`, but I did not get the actual benefit of this solution. Can anyone explain this?
  
  **Tags:** learning, puzzles, bishops
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-02-09. Score: 3 | Accepted answer
  
  The point is that after `1...Rxe3` Black will be winning material, as the sole defender of the white knight has been removed, and a pin tactic is coming. Specifically, after `2.Rxe3` (anything other than this recapture means Black has just won a piece for nothing) and `2...Bxd4`, White has no way to stop the follow-up `3...Bxe3+` since the rook is pinned to the king, and so Black has netted an extra piece anyway.
  
  ```
  [FEN "r1bqr1k1/1p3nbp/2pp2p1/2n2P2/p1PN1P2/2N1B1PP/PPQ3B1/R3R1K1 b - - 0 1"]
  
  1...Rxe3 2.Rxe3 Bxd4 *
  
  ```
  
  > **Comments:**
  > **username_2**: We might need a few more moves, Ed.  Black drops the exchange by `Rxe3`, and then wins the exchange after `Bxd4`. I don't see the white Rook dropping off the board for free. After `Bxd4`, White has 4 pieces that can defend `e3` with one move. One little thing I see is that with the removal of the Knight on `e4`, Black can play `Bxf5` with tempo and gain of a pawn. The solution you presented prevents the disruptive (but maybe bad...) `1. Nxc6 bxc6 2. Bxc6` Rook fork. Perhaps preventing that is the point of the puzzle.  
  > **username_3**: @username_2 In the position after Bxd4, White has two pieces for a rook, and will win an exchange on e3, thus he will be a piece up even if the Rook does not go for free. Am I missing something?  
  > **username_2**: @username_3 Yep, you're right - I miscounted it about 5 times. I neglected to tally the initial Bishop capture.  
  
  ---
  
  