Answers.Body: <p>Full disclosure: I don't play the King's Gambit.  My first thought (and note that I am NOT a master-level player) was 4. Nxg5 exf4 5. Nf3 (which, in and of itself, isn't sufficient to be an answer).</p>
  
  <p>I decided to just do some Googling to try to learn more about this, and stumbled across <a href="http://analysis.cpuchess.com/?fen=rnbqk1nr%2Fpppp1p1p%2F8%2F2b1p1p1%2F4PP2%2F5N2%2FPPPP2PP%2FRNBQKB1R%20w%20KQkq%20g6%200%204&amp;lmove=g5" rel="nofollow">analysis.cpuchess.com</a>, which allowed a position to be analysed by various chess engines.</p>
  
  <p>Here's what they gave me:</p>
  
  <p><strong>Houdini</strong></p>
  
  <blockquote>
    <ol start="4">
    <li>Nxg5 h6 5. Qh5 Qf6 6. Nf3 Qxf4 7. Qxe5+ Qxe5 8. Nxe5 d6 9. Nf3 Nc6 10. b3 Nge7 11. Bb2 Rg8 12. d4 Bb4+ 13. c3 Ba5 14. Nbd2 b5 15. g4 Bxg4 16. Bxb5 O-O-O</li>
    </ol>
  </blockquote>
  
  <p><strong>GarboChess JS</strong></p>
  
  <blockquote>
    <ol start="4">
    <li>Nxg5 Qe7 5. Bc4 exf4 6. Qh5 Nf6 7. Qxf7+ Qxf7 8. Bxf7+ Ke7 9. e5 Ng4</li>
    </ol>
  </blockquote>
  
  <p><strong>Fruit</strong></p>
  
  <p>Seemed to be locking up mid-analysis.</p>
  
  <p><strong>Stockfish</strong></p>
  
  <blockquote>
    <ol start="4">
    <li>Nxg5 Nc6 5. Qh5 Qf6 6. Bc4 Nh6 7. Nc3 Qg6 8. Qxg6 hxg6 9. Nd5 Bb6 10. Bb3 d6 11. d3 f5 12. Rf1 Bd7 13. fxe5 dxe5 14. exf5 Nxf5</li>
    </ol>
  </blockquote>
  
  <p><strong>Toga2</strong></p>
  
  <blockquote>
    <ol start="4">
    <li>Nxg5 Qe7 5. Nc3 exf4 6. Nf3 Bb4 7. e5 Bxc3 8. dxc3 d6 9. Qd5 Nc6 10. Bxf4 Nf6</li>
    </ol>
  </blockquote>
  
  <p><strong>Critter</strong></p>
  
  <blockquote>
    <ol start="4">
    <li>Nxg5 exf4 5. Qh5 Qe7 6. Bc4 Nf6 7. Qxf7+ Qxf7 8. Bxf7+ Ke7 9. Bb3 h6 10. Nf3 Nxe4 11. d4 Bd6 12. O-O Re8 13. Ne5 Nc6 14. Rxf4 Ng5 15. h4 Nxe5 16. hxg5</li>
    </ol>
  </blockquote>
  
  <p><strong>Observation</strong></p>
  
  <p>What I found most amusing about this was that all of them (except Fruit, of course) suggested 4. Nxg5 as the best move... but that most went different directions afterwards; 4. ... Qe7 on GarboChess JS and Toga2 being the only commonality, and even they diverged almost immediately.</p>
  
  <p>... which leads me to conclude that the answer to "how would you try to refute" is 4. Nxg5 followed by "tactics."</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-03-01T21:01:40.907Z
Answers.LastActivityDate: 2016-03-01T21:01:40.907Z
Answers.UserDisplayName: Ghotir
Body: <p>How would you try to refute the Sénéchaud Countergambit in King's Gambit? </p>
  
  <pre><code>[FEN ""]
  1.e4 e5 2.f4 Bc5 3.Nf3 g5
  </code></pre>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-12-07T21:42:47.447Z
Comments.Text: Is there anything preventing white from just taking the pawn? Seems like this should be bad for black.
Comments.UserDisplayName: GloriaVictis
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-12-07T21:48:46.980Z
Comments.Text: What do you mean by "taking the pawn"? There are four ways: 4. Nxe5, 4. Nxg5, 4.fxe5 4.fxg5
Comments.UserDisplayName: A. N. Other
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-12-07T21:54:34.557Z
Comments.Text: I meant the gambit pawn, of course - say, 4. Nxg5. Or even 4. fxg5, for that matter.
Comments.UserDisplayName: GloriaVictis
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-12-08T08:09:05.560Z
Comments.Text: I think in almost all cases the best way to refute a gambit (if a refutation exists) is by accepting it.  Essentially that is a way of saying "show me".
Comments.UserDisplayName: Jester
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-12-09T21:20:49.043Z
Comments.Text: What does Black do after 4. Nxe5? Is it 4...gxf4 or 4...d6 or 4...Qe7 or something else?
Comments.UserDisplayName: bof
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-12-12T15:35:38.900Z
Comments.Text: 4...gxf4, with 5...Qh4+ in mind, I suppose.
Comments.UserDisplayName: A. N. Other
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-03-02T02:00:11.363Z
Comments.Text: @A.N.Other 4.Nxe5 gxf4 5.Nf3 is similar to 1.e4 e5 2.f4 exf4 3.Nf3 Bc5?! except that White has lost the move and Black has lost the g7 pawn. It's as if, instead of making a legal move (such as the natural 4.d4) White had removed the g7 pawn from the board and pressed the clock. In view of Black's defective pawn structure, and White's coming tempo gain with d4, it's hard to see how this can be very good for Black.
Comments.UserDisplayName: bof
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-03-02T02:14:33.007Z
Comments.Text: As clichedly janky as it is, what does Black do after 4. Nxe5 gxf4 5.Qh5?  Black's given up the ability to push the queen around with their g-pawn, the mate seems like a real threat, and Black's kingside is going to be in knots.  White has to be careful about hanging the knight, but after simple developing moves like ...Qe7 6.Nc3, it's hard to see how Black has anything.
Comments.UserDisplayName: Steven Stadnicki
Tags: <gambits><kings-gambit>
Title: Dealing with Sénéchaud Countergambit in King’s Gambit
ThreadText: # Dealing with Sénéchaud Countergambit in King’s Gambit
  
  (Asked by: username_0 on 2015-12-07)
  
  How would you try to refute the Sénéchaud Countergambit in King's Gambit?
  
  ```
  [FEN ""]
  1.e4 e5 2.f4 Bc5 3.Nf3 g5
  
  ```
  
  **Tags:** gambits, kings-gambit
  
  > **Comments:**
  > **username_1**: Is there anything preventing white from just taking the pawn? Seems like this should be bad for black.  
  > **username_0**: What do you mean by "taking the pawn"? There are four ways: 4. Nxe5, 4. Nxg5, 4.fxe5 4.fxg5  
  > **username_1**: I meant the gambit pawn, of course - say, 4. Nxg5. Or even 4. fxg5, for that matter.  
  > **username_2**: I think in almost all cases the best way to refute a gambit (if a refutation exists) is by accepting it.  Essentially that is a way of saying "show me".  
  > **username_3**: What does Black do after 4. Nxe5? Is it 4...gxf4 or 4...d6 or 4...Qe7 or something else?  
  > **username_0**: 4...gxf4, with 5...Qh4+ in mind, I suppose.  
  > **username_3**: @username_0 4.Nxe5 gxf4 5.Nf3 is similar to 1.e4 e5 2.f4 exf4 3.Nf3 Bc5?! except that White has lost the move and Black has lost the g7 pawn. It's as if, instead of making a legal move (such as the natural 4.d4) White had removed the g7 pawn from the board and pressed the clock. In view of Black's defective pawn structure, and White's coming tempo gain with d4, it's hard to see how this can be very good for Black.  
  > **username_4**: As clichedly janky as it is, what does Black do after 4. Nxe5 gxf4 5.Qh5?  Black's given up the ability to push the queen around with their g-pawn, the mate seems like a real threat, and Black's kingside is going to be in knots.  White has to be careful about hanging the knight, but after simple developing moves like ...Qe7 6.Nc3, it's hard to see how Black has anything.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_5 on 2016-03-01. Score: 3
  
  Full disclosure: I don't play the King's Gambit. My first thought (and note that I am NOT a master-level player) was 4. Nxg5 exf4 5. Nf3 (which, in and of itself, isn't sufficient to be an answer).
  
  I decided to just do some Googling to try to learn more about this, and stumbled across [analysis.cpuchess.com](http://analysis.cpuchess.com/?fen=rnbqk1nr%2Fpppp1p1p%2F8%2F2b1p1p1%2F4PP2%2F5N2%2FPPPP2PP%2FRNBQKB1R%20w%20KQkq%20g6%200%204&lmove=g5), which allowed a position to be analysed by various chess engines.
  
  Here's what they gave me:
  
  **Houdini**
  
  > 4. Nxg5 h6 5. Qh5 Qf6 6. Nf3 Qxf4 7. Qxe5+ Qxe5 8. Nxe5 d6 9. Nf3 Nc6 10. b3 Nge7 11. Bb2 Rg8 12. d4 Bb4+ 13. c3 Ba5 14. Nbd2 b5 15. g4 Bxg4 16. Bxb5 O-O-O
  
  **GarboChess JS**
  
  > 4. Nxg5 Qe7 5. Bc4 exf4 6. Qh5 Nf6 7. Qxf7+ Qxf7 8. Bxf7+ Ke7 9. e5 Ng4
  
  **Fruit**
  
  Seemed to be locking up mid-analysis.
  
  **Stockfish**
  
  > 4. Nxg5 Nc6 5. Qh5 Qf6 6. Bc4 Nh6 7. Nc3 Qg6 8. Qxg6 hxg6 9. Nd5 Bb6 10. Bb3 d6 11. d3 f5 12. Rf1 Bd7 13. fxe5 dxe5 14. exf5 Nxf5
  
  **Toga2**
  
  > 4. Nxg5 Qe7 5. Nc3 exf4 6. Nf3 Bb4 7. e5 Bxc3 8. dxc3 d6 9. Qd5 Nc6 10. Bxf4 Nf6
  
  **Critter**
  
  > 4. Nxg5 exf4 5. Qh5 Qe7 6. Bc4 Nf6 7. Qxf7+ Qxf7 8. Bxf7+ Ke7 9. Bb3 h6 10. Nf3 Nxe4 11. d4 Bd6 12. O-O Re8 13. Ne5 Nc6 14. Rxf4 Ng5 15. h4 Nxe5 16. hxg5
  
  **Observation**
  
  What I found most amusing about this was that all of them (except Fruit, of course) suggested 4. Nxg5 as the best move... but that most went different directions afterwards; 4. ... Qe7 on GarboChess JS and Toga2 being the only commonality, and even they diverged almost immediately.
  
  ... which leads me to conclude that the answer to "how would you try to refute" is 4. Nxg5 followed by "tactics."
  
  
  ---
  
  