Answers.Body: <p>6...b5 7.Bd5! Nxd5 8.exd5 leaves Black in trouble. The e-file has been opened and Black has to figure out how to castle before things get really heated. The c6-square is also a major weakness that White's d4-knight is ready to jump to at the right moment.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-22T16:58:33.800Z
Answers.Text: But for 6... b5 Engine plays 7. Bb3. Then I get confused with your answer and Engine's move. Which one to play in tournaments?
Answers.UserDisplayName: Club Player
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-23T02:58:21.650Z
Answers.Text: @Club Player My engine plays 7.Bd5 after thinking for a few seconds. Which engine are you using, and at what depth?
Answers.UserDisplayName: Inertial Ignorance
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-23T03:55:49.127Z
Answers.Text: I am using Fritz16 @ Grandmaster Level.
Answers.UserDisplayName: Club Player
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-23T04:38:25.133Z
Answers.Text: Grandmaster level is pretty broad since the top engines are 3000+. I'm running Deep Fritz 13 at depth 24, and it gives 7.Bd5 a +0.97 evaluation, while 7.Bb3 only gets a +0.71 evaluation. However, engines typically evaluate standard Najdorf positions too optimistically in White's favor. So 7.Bb3 isn't really +0.71, the engine is misevaluating (it would lead to a normal Sozin position which theory has determined is close to equal). Meanwhile, 7.Bd5 leads to a position outside of normal Najdorf waters, so the engine's evaluation is more trustworthy there.
Answers.UserDisplayName: Inertial Ignorance
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-23T04:40:58.717Z
Answers.Text: All in all, if you play 6...b5 you're just giving White a choice between 7.Bd5! and going for a normal Sozin with 7.Bb3 (which you would have gotten anyways if you played 6...e6). I don't think it makes sense to give White an extra option, considering this option is very nice for White.
Answers.UserDisplayName: Inertial Ignorance
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-23T05:19:11.057Z
Answers.Text: Sir, that means can I play either 7. Bb3 or 7. Bd5 to get stronger continuation? Since I can not discuss this idea with a GM personally, I refer strong Engines at higher level and also I posted this question in this website. Or I feel both 7. Bb3  or 7. Bd5 are theoretically good. By the way I participate in many tournaments including National Level. My Fide Rating is 1421 (Std), 1395 (Rapid). I also teach chess for budding players since 15 years. So when a student asks me I  have to clearly say the answer. Requesting you to clarify my doubts further. Thanks for your efforts towards me.
Answers.UserDisplayName: Club Player
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-23T05:28:13.710Z
Answers.Text: Let us [continue this discussion in chat](https://chat.stackexchange.com/rooms/88657/discussion-between-club-player-and-inertial-ignorance).
Answers.UserDisplayName: Club Player
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-01-21T23:50:13.577Z
Answers.LastActivityDate: 2019-01-21T23:50:13.577Z
Answers.UserDisplayName: Inertial Ignorance
Body: <ol>
  <li>e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6</li>
  </ol>
  
  <p>1) For 6. Bc4 Black can play immediately b5 and attack it. But almost all Grandmasters reply with 6....e6. Theory also stresses to 6....e6. Why not 6.... b5 to attack Bishop immediately as 5....a6 is already done? Is it not giving Black a strong attack against White? Hence, why Grandmasters are not playing early 6....b5 in their games? Expecting good answer. Thanks in advance.  </p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-01-22T16:57:49.147Z
Comments.Text: But for 6... b5 Engine plays 7. Bb3. Then I get confused with your answer and Engine's move. Which one to play in tournaments?
Comments.UserDisplayName: Club Player
Tags: <opening>
Title: Sicilian Najdorf, Sozin Variation
ThreadText: # Sicilian Najdorf, Sozin Variation
  
  (Asked by: username_0 on 2019-01-21)
  
  1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6
  
  1) For 6. Bc4 Black can play immediately b5 and attack it. But almost all Grandmasters reply with 6....e6. Theory also stresses to 6....e6. Why not 6.... b5 to attack Bishop immediately as 5....a6 is already done? Is it not giving Black a strong attack against White? Hence, why Grandmasters are not playing early 6....b5 in their games? Expecting good answer. Thanks in advance.
  
  **Tags:** opening
  
  > **Comments:**
  > **username_0**: But for 6... b5 Engine plays 7. Bb3. Then I get confused with your answer and Engine's move. Which one to play in tournaments?  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2019-01-21. Score: 1 | Accepted answer
  
  6...b5 7.Bd5! Nxd5 8.exd5 leaves Black in trouble. The e-file has been opened and Black has to figure out how to castle before things get really heated. The c6-square is also a major weakness that White's d4-knight is ready to jump to at the right moment.
  
  > **Comments:**
  > **username_0**: But for 6... b5 Engine plays 7. Bb3. Then I get confused with your answer and Engine's move. Which one to play in tournaments?  
  > **username_1**: @username_0 My engine plays 7.Bd5 after thinking for a few seconds. Which engine are you using, and at what depth?  
  > **username_0**: I am using Fritz16 @ Grandmaster Level.  
  > **username_1**: Grandmaster level is pretty broad since the top engines are 3000+. I'm running Deep Fritz 13 at depth 24, and it gives 7.Bd5 a +0.97 evaluation, while 7.Bb3 only gets a +0.71 evaluation. However, engines typically evaluate standard Najdorf positions too optimistically in White's favor. So 7.Bb3 isn't really +0.71, the engine is misevaluating (it would lead to a normal Sozin position which theory has determined is close to equal). Meanwhile, 7.Bd5 leads to a position outside of normal Najdorf waters, so the engine's evaluation is more trustworthy there.  
  > **username_1**: All in all, if you play 6...b5 you're just giving White a choice between 7.Bd5! and going for a normal Sozin with 7.Bb3 (which you would have gotten anyways if you played 6...e6). I don't think it makes sense to give White an extra option, considering this option is very nice for White.  
  > **username_0**: Sir, that means can I play either 7. Bb3 or 7. Bd5 to get stronger continuation? Since I can not discuss this idea with a GM personally, I refer strong Engines at higher level and also I posted this question in this website. Or I feel both 7. Bb3  or 7. Bd5 are theoretically good. By the way I participate in many tournaments including National Level. My Fide Rating is 1421 (Std), 1395 (Rapid). I also teach chess for budding players since 15 years. So when a student asks me I  have to clearly say the answer. Requesting you to clarify my doubts further. Thanks for your efforts towards me.  
  > **username_0**: Let us [continue this discussion in chat](https://chat.stackexchange.com/rooms/88657/discussion-between-club-player-and-inertial-ignorance).  
  
  ---
  
  