Answers.Body: <p>The bishop is pretty decent on g5 as well. </p>
  
  <p>So after 1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5 4.Bg5 and now black would have to create serious weaknesses on the kingside to hunt down the bishop. But if he just returns the knight, he has lost a tempo.</p>
  
  <pre><code>[FEN ""]
  1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5 4.Bg5 h6 5.Bh4 g5 6.Bg3 Nxg3 7.hxg3
  </code></pre>
  
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Answers.CreationDate: 2015-05-11T12:36:03.130Z
Answers.LastActivityDate: 2015-05-11T12:36:03.130Z
Answers.UserDisplayName: BlindKungFuMaster
Answers.Body: <p>An alternative is to play the move order 1.d4 d5 2.Bf4 Nf6 3.e3, preventing Nh5. Next, you can play 4.Nf3 or 4.c4.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-06-15T03:59:27.663Z
Answers.Text: How exactly does `3. e3` prevent `Nh5` ?
Answers.UserDisplayName: Marcus Junius Brutus
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-06-15T06:38:08.227Z
Answers.Text: After 3.e3 Nh5, white can take the knight with 4.Qxh5.
Answers.UserDisplayName: Maxwell86
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-04-03T13:00:55.157Z
Answers.Text: But after 4.c4, this is not a London system anymore, and after 4.Nf3, 4...Nh5 is on the table again !
Answers.UserDisplayName: Evargalo
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-04-03T16:06:48.713Z
Answers.Text: True, after 4.c4, it's not a London anymore, but rather queen's gambit like. The fact that white has this option is actually an advantage of the move order with 3.e3. Also, whether after 4.Nf3, 4....Nh5 is good or not, depends on black's third move. For example, after 3....e6 4.Nf3 Nh5 5.Bg5, black has no time to play 5....h6 as the queen is under attack. Moreover, white has other London system moves at his disposal, like 4.c3, 4.Nd2 and 4.Bd3.
Answers.UserDisplayName: Maxwell86
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Answers.CreationDate: 2015-06-18T19:23:16.433Z
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Answers.UserDisplayName: Maxwell86
Answers.Body: <p>That's funny, White's position is broken after only 3 moves.</p>
  
  <p>3...Nh5? Costs a tempo. I can play 5.Qd2 <strong>overprotecting</strong> the <em>strong</em> points d4 and f4, e.g. 4.e3 Nxf4 5.exf4.</p>
  
  <p>Broken means injured...</p>
  
  <p>And injured means weak.</p>
  
  <p>A position is not broken if there's no weakness.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-02-01T10:11:13.147Z
Answers.Text: White hasn't played e2-e3 yet, so 5.exf4 is impossible in your variation.
Answers.UserDisplayName: Evargalo
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-02-01T18:48:52.473Z
Answers.Text: @evargalo see edit
Answers.UserDisplayName: Jossie Calderon
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Answers.CreationDate: 2019-02-01T04:16:10.107Z
Answers.LastActivityDate: 2019-02-01T18:48:44.983Z
Answers.LastEditDate: 2019-02-01T18:48:44.983Z
Answers.UserDisplayName: Jossie Calderon
Body: <p>In the London system, white wants to keep their dark squared bishop,
  Therefore after say <code>1. d4 d5 2. Nf3 Nf6 3. Bf4</code>, black can play <code>3...Nh5</code>, doesn't it break white's position?</p>
  
  <pre><code>[FEN ""]
  1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5
  </code></pre>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-01-31T10:01:24.130Z
Comments.Text: It makes sense for Black to wait for White to play e2-e3 and cut the bishop's retreat before starting hunting it with any ...Nh5.
Comments.UserDisplayName: Evargalo
Tags: <opening><london-system>
Title: Knight to h5 in the london system
ThreadText: # Knight to h5 in the london system
  
  (Asked by: username_0 on 2015-05-11)
  
  In the London system, white wants to keep their dark squared bishop,
  Therefore after say 1. d4 d5 2. Nf3 Nf6 3. Bf4, black can play 3...Nh5, doesn't it break white's position?
  [FEN ""]
  1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5
  
  **Tags:** opening, london-system
  
  > **Comments:**
  > **username_1**: It makes sense for Black to wait for White to play e2-e3 and cut the bishop's retreat before starting hunting it with any ...Nh5.  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_2 on 2015-05-11. Score: 10
  
  The bishop is pretty decent on g5 as well. 
  So after 1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5 4.Bg5 and now black would have to create serious weaknesses on the kingside to hunt down the bishop. But if he just returns the knight, he has lost a tempo.
  [FEN ""]
  1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5 4.Bg5 h6 5.Bh4 g5 6.Bg3 Nxg3 7.hxg3
  
  
  ---
  
  ### Answer by username_3 on 2015-06-18. Score: 1
  
  An alternative is to play the move order 1.d4 d5 2.Bf4 Nf6 3.e3, preventing Nh5. Next, you can play 4.Nf3 or 4.c4.
  
  > **Comments:**
  > **username_4**: How exactly does `3. e3` prevent `Nh5` ?  
  > **username_3**: After 3.e3 Nh5, white can take the knight with 4.Qxh5.  
  > **username_1**: But after 4.c4, this is not a London system anymore, and after 4.Nf3, 4...Nh5 is on the table again !  
  > **username_3**: True, after 4.c4, it's not a London anymore, but rather queen's gambit like. The fact that white has this option is actually an advantage of the move order with 3.e3. Also, whether after 4.Nf3, 4....Nh5 is good or not, depends on black's third move. For example, after 3....e6 4.Nf3 Nh5 5.Bg5, black has no time to play 5....h6 as the queen is under attack. Moreover, white has other London system moves at his disposal, like 4.c3, 4.Nd2 and 4.Bd3.  
  
  ---
  
  ### Answer by username_5 on 2019-02-01. Score: 0
  
  That's funny, White's position is broken after only 3 moves.
  
  3...Nh5? Costs a tempo. I can play 5.Qd2 **overprotecting** the *strong* points d4 and f4, e.g. 4.e3 Nxf4 5.exf4.
  
  Broken means injured...
  
  And injured means weak.
  
  A position is not broken if there's no weakness.
  
  > **Comments:**
  > **username_1**: White hasn't played e2-e3 yet, so 5.exf4 is impossible in your variation.  
  > **username_5**: @evargalo see edit  
  
  ---
  
  