Answers.Body: <p>The move 12. Nh5, losing a knight, is what lost the game. The rest, as they say, is a matter of technique. If you thought that was a sound sacrifice then you need to study more openings and tactics. </p>
  
  <ol start="17">
  <li>g4 was bad for black.</li>
  </ol>
  
  <p>You missed 19. d5, winning another bishop. Additionally, you should not have let black play to open up the kingside by letting your pawn attack the queen. and pawn together. </p>
  
  <p>Black putting the king on a5 was asking to be mated and end it.</p>
  
  <p>White opened poorly.  You should have been more aggressive in punishing that. And made fewer mistakes than white did.</p>
  
  <p>White played poorly.  Clearly you played even less good. </p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-12-25T18:33:51.847Z
Answers.LastActivityDate: 2019-12-25T21:25:42.360Z
Answers.LastEditDate: 2019-12-25T21:25:42.360Z
Answers.UserDisplayName: yobamamama
Answers.Body: <ol start="12">
  <li>b3 Nh5 following </li>
  <li>fxe4 leading to losing your knight (did not see the discovered attack)</li>
  <li>Qxh5</li>
  </ol>
  
  <p>To save the knight you would have needed to play pawn g6 on 13. instead of playing dxe4</p>
  
  <p>Playing back to Nf6 will get you forked with white moving pawn to e5 on move 14.</p>
  
  <p>It is all down the hill from then on.</p>
  
  <p>Also on 31.</p>
  
  <p>Moving the King out into the wild is also problematic as you saw with the pinned bishop and the checkmate with the rook!</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-08-21T10:59:14.430Z
Answers.LastActivityDate: 2015-08-21T11:19:39.383Z
Answers.LastEditDate: 2015-08-21T11:19:39.383Z
Answers.UserDisplayName: mahatmanich
Body: <p>So I'm what I would call a half-good to OK player, and I have the app chess free on my phone. I play against that AI all the time, and on level 6, I have a pretty bad win record (18%). I decided to try and teach myself how to perform sound sacrifices, and in the process played this game. Where the heck did I go wrong?</p>
  
  <pre><code>[FEN "..."]
  1. e3 e5 2. Qh5 Nc6 3. Bc4 d5 4. Bb5 Bd6 5. d4 Nf6 
  6. Qe2 e4 7. Nh3 Bd7 8. Nc3 a6 9. Bxc6 Bxc6 10. a3 Qd7 
  11. f3 O-O-O 12. b3 Nh5 13. fxe4 dxe4 14. Qxh5 f5 15. Qe2 h6 
  16. O-O g5 17. a4 g4 18. Nf4 h5 19. Qf2 h4 20. Ng6 g3 
  21. hxg3 hxg3 22. Qxf5 Qxf5 23. Rxf5 Rh8g8 24. Ne5 Rd8f8 25. Rxf8+ Rxf8 
  26. Nxc6 bxc6 27. Nxe4 Rg8 28. Bb2 Rg6 29. Rf1 Kb7 30. Nc5+ Kb6 
  31. Nd7+ Ka5 32. Bc3+ Bb4 33. Rf5+ c5 34. Rxc5#
  </code></pre>
  
  <p>I have the black pieces in the game.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-08-14T11:37:07.607Z
Comments.Text: I'm voting to close this and will rescind once the OP posts the board here. The link destination requires a login.
Comments.UserDisplayName: Tony Ennis
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-08-20T12:13:56.217Z
Comments.Text: Ok, sorry for the late reply, I have pasted the game into the question. Please remove your close request.
Comments.UserDisplayName: trailrunnersquared
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-08-20T15:04:04.580Z
Comments.Text: With 12...Nh5 you essentially give away a piece, for no compensation. You manage to get a reasonable attack afterwards, but 17...g4 allows White to block everything. You would like to play ...f4 (probably after playing Rdf8), opening up the position for your bishops, rooks and queen.
Comments.UserDisplayName: Glorfindel
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-08-20T15:49:55.410Z
Comments.Text: Yeah, 12..Nh5 was a bit of a blunder for me. Like I said, I'm not Tal or Carlsen.
Comments.UserDisplayName: trailrunnersquared
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-08-23T09:21:29.113Z
Comments.Text: Teach a man to fish... You can import your games to lichess to get a detailed analysis. I've done it for this game - http://en.lichess.org/FvB27gLN/black. As was already mentioned, 12. ... Nh5? shifted the tide, and 31. ... Ka5? expedited the end; but there were other mistakes too, e.g. 20. ... g3?. I also recommend playing humans instead of AI, you can do that on lichess as well (and there's a mobile app). You'll also get an (unofficial) rating, which will allow you to describe your level more accurately than "half-good to OK", which is very subjective.
Comments.UserDisplayName: Meni Rosenfeld
Tags: <analysis>
Title: Where did I go wrong this game?
ThreadText: # Where did I go wrong this game?
  
  (Asked by: username_0 on 2015-08-14)
  
  So I'm what I would call a half-good to OK player, and I have the app chess free on my phone. I play against that AI all the time, and on level 6, I have a pretty bad win record (18%). I decided to try and teach myself how to perform sound sacrifices, and in the process played this game. Where the heck did I go wrong?
  
  ```
  [FEN "..."]
  1. e3 e5 2. Qh5 Nc6 3. Bc4 d5 4. Bb5 Bd6 5. d4 Nf6 
  6. Qe2 e4 7. Nh3 Bd7 8. Nc3 a6 9. Bxc6 Bxc6 10. a3 Qd7 
  11. f3 O-O-O 12. b3 Nh5 13. fxe4 dxe4 14. Qxh5 f5 15. Qe2 h6 
  16. O-O g5 17. a4 g4 18. Nf4 h5 19. Qf2 h4 20. Ng6 g3 
  21. hxg3 hxg3 22. Qxf5 Qxf5 23. Rxf5 Rh8g8 24. Ne5 Rd8f8 25. Rxf8+ Rxf8 
  26. Nxc6 bxc6 27. Nxe4 Rg8 28. Bb2 Rg6 29. Rf1 Kb7 30. Nc5+ Kb6 
  31. Nd7+ Ka5 32. Bc3+ Bb4 33. Rf5+ c5 34. Rxc5#
  
  ```
  
  I have the black pieces in the game.
  
  **Tags:** analysis
  
  > **Comments:**
  > **username_1**: I'm voting to close this and will rescind once the OP posts the board here. The link destination requires a login.  
  > **username_0**: Ok, sorry for the late reply, I have pasted the game into the question. Please remove your close request.  
  > **username_2**: With 12...Nh5 you essentially give away a piece, for no compensation. You manage to get a reasonable attack afterwards, but 17...g4 allows White to block everything. You would like to play ...f4 (probably after playing Rdf8), opening up the position for your bishops, rooks and queen.  
  > **username_0**: Yeah, 12..Nh5 was a bit of a blunder for me. Like I said, I'm not Tal or Carlsen.  
  > **username_3**: Teach a man to fish... You can import your games to lichess to get a detailed analysis. I've done it for this game - http://en.lichess.org/FvB27gLN/black. As was already mentioned, 12. ... Nh5? shifted the tide, and 31. ... Ka5? expedited the end; but there were other mistakes too, e.g. 20. ... g3?. I also recommend playing humans instead of AI, you can do that on lichess as well (and there's a mobile app). You'll also get an (unofficial) rating, which will allow you to describe your level more accurately than "half-good to OK", which is very subjective.  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_5 on 2015-08-21. Score: 4 | Accepted answer
  
  12. b3 Nh5 following
  13. fxe4 leading to losing your knight (did not see the discovered attack)
  14. Qxh5
  
  To save the knight you would have needed to play pawn g6 on 13. instead of playing dxe4
  
  Playing back to Nf6 will get you forked with white moving pawn to e5 on move 14.
  
  It is all down the hill from then on.
  
  Also on 31.
  
  Moving the King out into the wild is also problematic as you saw with the pinned bishop and the checkmate with the rook!
  
  
  ---
  
  ### Answer by username_4 on 2019-12-25. Score: 0
  
  The move 12. Nh5, losing a knight, is what lost the game. The rest, as they say, is a matter of technique. If you thought that was a sound sacrifice then you need to study more openings and tactics.
  
  17. g4 was bad for black.
  
  You missed 19. d5, winning another bishop. Additionally, you should not have let black play to open up the kingside by letting your pawn attack the queen. and pawn together.
  
  Black putting the king on a5 was asking to be mated and end it.
  
  White opened poorly. You should have been more aggressive in punishing that. And made fewer mistakes than white did.
  
  White played poorly. Clearly you played even less good.
  
  
  ---
  
  