Answers.Body: <p>The answer was given in a comment:</p>
  <blockquote>
  <p>After your Qa5+ how do you make White play Kf1? What do you do if he plays Qd2?</p>
  </blockquote>
  <p>This is correct. There's really nothing you can do after Qa5+ Qd2 that gives Black a significant advantage.</p>
  <blockquote>
  <p>He can play Qd2 after Bxa3; Nxa3 Qa5; too right?</p>
  </blockquote>
  <p>White can play that, but it doesn't help in that position. You can take the knight with your queen. (If you played Qa5+ first, then ...Qxa3 loses to Nxa3, and ...Bxa3 is obviously responded to with Qxa5.)</p>
  <pre><code>[FEN &quot;rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/P1P1PPBP/RN1QK2R b KQkq - 0 1&quot;]
  [startflipped &quot;&quot;]
  
  1... Bxa3 (1... Qa5+ 2. Qd2 Qxa3? (2... Qxd2+ 3. Kxd2 Bxa3 4. Nxa3 {Material is even.}) (2... Bxa3 3. Qxa5 Bb2 4. Qb4 Bxa1 {Rook and bishop for the queen for now, although Black's bishop may get trapped. Certainly White has the advantage.}) 3. Nxa3 Bxa3 {Two pieces for the queen; White is clearly ahead.}) 2. Nxa3 Qa5+ 3. Qd2 Qxa3 {Black is up a knight.}
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-07-10T03:30:50.920Z
Answers.LastActivityDate: 2021-07-11T15:15:29.703Z
Answers.LastEditDate: 2021-07-11T15:15:29.703Z
Answers.UserDisplayName: D M
Body: <pre><code>[FEN &quot;rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/P1P1PPBP/RN1QK2R b KQkq - 0 1&quot;]
  [StartFlipped &quot;0&quot;]
  
  1... Bxa3 2.Nxa3 Qa5+ 3.Kf1 Qxa3
  </code></pre>
  <p>FEN: rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/P1P1PPBP/RN1QK2R b - - 0 1</p>
  <p>I thought that the solution would be equivalent to 1... Qa5+ 2. Kf1 Bxa3 3. Nxa3 Qxa3. But apparently, my solution is wrong. What is the difference between these two sequences? Why should you take the White bishop first?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2021-07-10T02:48:51.450Z
Comments.Text: After your Qa5+ how do you make White play Kf1? What do you do if he plays Qd2?
Comments.UserDisplayName: bof
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2021-07-10T03:02:07.267Z
Comments.Text: @bof If that's the answer then why put it in a comment instead of an answer? :P
Comments.UserDisplayName: D M
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2021-07-12T15:24:37.940Z
Comments.Text: It's worth noting that if white had played Na3 instead of Ba3 one move before this puzzle, then yes there would be no difference between the two move orders. Specifically, 1...Qa5+ 2. Qd2 can be met with Bb4! and you're winning the a3 piece next.
Comments.UserDisplayName: NoseKnowsAll
Tags: <analysis><puzzles>
Title: Why are these sequence of steps played to solve this puzzle?
ThreadText: # Why are these sequence of steps played to solve this puzzle?
  
  (Asked by: username_0 on 2021-07-10)
  
  ```
  [FEN "rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/P1P1PPBP/RN1QK2R b KQkq - 0 1"]
  [StartFlipped "0"]
  
  1... Bxa3 2.Nxa3 Qa5+ 3.Kf1 Qxa3
  
  ```
  
  FEN: rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/P1P1PPBP/RN1QK2R b - - 0 1
  
  I thought that the solution would be equivalent to 1... Qa5+ 2. Kf1 Bxa3 3. Nxa3 Qxa3. But apparently, my solution is wrong. What is the difference between these two sequences? Why should you take the White bishop first?
  
  **Tags:** analysis, puzzles
  
  > **Comments:**
  > **username_1**: After your Qa5+ how do you make White play Kf1? What do you do if he plays Qd2?  
  > **username_2**: @username_1 If that's the answer then why put it in a comment instead of an answer? :P  
  > **username_3**: It's worth noting that if white had played Na3 instead of Ba3 one move before this puzzle, then yes there would be no difference between the two move orders. Specifically, 1...Qa5+ 2. Qd2 can be met with Bb4! and you're winning the a3 piece next.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2021-07-10. Score: 5 | Accepted answer
  
  The answer was given in a comment:
  
  > After your Qa5+ how do you make White play Kf1? What do you do if he plays Qd2?
  
  This is correct. There's really nothing you can do after Qa5+ Qd2 that gives Black a significant advantage.
  
  > He can play Qd2 after Bxa3; Nxa3 Qa5; too right?
  
  White can play that, but it doesn't help in that position. You can take the knight with your queen. (If you played Qa5+ first, then ...Qxa3 loses to Nxa3, and ...Bxa3 is obviously responded to with Qxa5.)
  
  ```
  [FEN "rnbqkb1r/pp4pp/2p1pn2/3p1p2/3P4/BP4PN/P1P1PPBP/RN1QK2R b KQkq - 0 1"]
  [startflipped ""]
  
  1... Bxa3 (1... Qa5+ 2. Qd2 Qxa3? (2... Qxd2+ 3. Kxd2 Bxa3 4. Nxa3 {Material is even.}) (2... Bxa3 3. Qxa5 Bb2 4. Qb4 Bxa1 {Rook and bishop for the queen for now, although Black's bishop may get trapped. Certainly White has the advantage.}) 3. Nxa3 Bxa3 {Two pieces for the queen; White is clearly ahead.}) 2. Nxa3 Qa5+ 3. Qd2 Qxa3 {Black is up a knight.}
  
  ```
  
  
  ---
  
  