Answers.Body: <p><a href="https://en.wikibooks.org/wiki/Chess_Opening_Theory" rel="nofollow noreferrer">Wikibook Chess Opening Theory</a> has similar aims but I don't think it quite meets all of your requirements. Still, it's the website closest to meeting them that I can think of, so I hope it helps. Being a wiki, it's still evolving and of course one can always wonder about the expertise of the authors.</p>
  
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Answers.CreationDate: 2017-11-22T16:42:08.590Z
Answers.Text: Interesting, I'll look into it. What do you think about ChessGames.com?
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Answers.Text: Thanks, it is indeed the closest to what I need. Plus, I found Chess Position Trainer, which helps too. I've accepted and upvoted your answer!
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Answers.Text: @HarryWeasley, thanks and sorry I missed your other question. I use chessgames.com to look up historical games but I'm not a member. As far as I can tell, their opening tool lets you see the statistics but has no annotations, unless there's something else in the members-only area that I haven't seen.
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Answers.Text: I looked it up, and I think they provide some kind of in-depth opening analysis (called 'Opening Laboratory' or 'Position Laboratory' or something) for premium members, but not for non-premium members. Thanks again, the Wikibook helps rather well!
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Body: <p>I'm looking for a site that provides <strong>well-annotated openings</strong>, giving at least the first 15-20 moves of major openings and allowing me to explore their main variations and lines (by clicking on the relevant moves on an online chessboard).</p>
  <p>For example, if I am learning Queen's Gambit Declined, I'd expect it to display something along the lines of this (more detailed and expertly annotated, of course, and with a diagram)</p>
  <blockquote>
  <p><strong>1. d4</strong> A popular  opening move, which gives White a solid position. <strong>1. ... d5</strong> Black's reply is quite common, and preserves the symmetry of the situation. <strong>2. c4</strong> This is the Queen's gambit - if accepted, it can provide White great momentum and development. <strong>2. ...e6</strong> Black turns down the gambit  and prefers to keep the position interesting. <em>2. ...dxc4</em> is not really got for Black as White can get the pawn back soon by [sequence of moves] followed by a bishop move.</p>
  </blockquote>
  <p>And if I play <strong>2. ...c6</strong>, I'd expect something like this (but again more detailed and with a diagram to help.)</p>
  <blockquote>
  <p><strong>2. ...c6</strong> This changes the opening to the Slav defense.</p>
  </blockquote>
  <h2>My question</h2>
  <p>Is there any site online that provides <strong>detailed, annotated openings at least 15-20 moves deep</strong> and allows me to explore <strong>variations and lines (also
  annotated)</strong>?</p>
  <h2>Note</h2>
  <p>The site needn't focus on other parts of the game. I'm focusing on the opening for now.</p>
  
Tags: <opening><online><annotation>
Title: Sites which provide annotated openings (preferably interactive)
ThreadText: # Sites which provide annotated openings (preferably interactive)
  
  (Asked by: username_0 on 2017-11-22)
  
  I'm looking for a site that provides **well-annotated openings**, giving at least the first 15-20 moves of major openings and allowing me to explore their main variations and lines (by clicking on the relevant moves on an online chessboard).
  
  For example, if I am learning Queen's Gambit Declined, I'd expect it to display something along the lines of this (more detailed and expertly annotated, of course, and with a diagram)
  
  > **1. d4** A popular opening move, which gives White a solid position. **1. ... d5** Black's reply is quite common, and preserves the symmetry of the situation. **2. c4** This is the Queen's gambit - if accepted, it can provide White great momentum and development. **2. ...e6** Black turns down the gambit and prefers to keep the position interesting. *2. ...dxc4* is not really got for Black as White can get the pawn back soon by [sequence of moves] followed by a bishop move.
  
  And if I play **2. ...c6**, I'd expect something like this (but again more detailed and with a diagram to help.)
  
  > **2. ...c6** This changes the opening to the Slav defense.
  
  ## My question
  
  Is there any site online that provides **detailed, annotated openings at least 15-20 moves deep** and allows me to explore **variations and lines (also
  annotated)**?
  
  ## Note
  
  The site needn't focus on other parts of the game. I'm focusing on the opening for now.
  
  **Tags:** opening, online, annotation
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2017-11-22. Score: 3 | Accepted answer
  
  [Wikibook Chess Opening Theory](https://en.wikibooks.org/wiki/Chess_Opening_Theory) has similar aims but I don't think it quite meets all of your requirements. Still, it's the website closest to meeting them that I can think of, so I hope it helps. Being a wiki, it's still evolving and of course one can always wonder about the expertise of the authors.
  
  > **Comments:**
  > **username_0**: Interesting, I'll look into it. What do you think about ChessGames.com?  
  > **username_0**: Thanks, it is indeed the closest to what I need. Plus, I found Chess Position Trainer, which helps too. I've accepted and upvoted your answer!  
  > **username_1**: @HarryWeasley, thanks and sorry I missed your other question. I use chessgames.com to look up historical games but I'm not a member. As far as I can tell, their opening tool lets you see the statistics but has no annotations, unless there's something else in the members-only area that I haven't seen.  
  > **username_0**: I looked it up, and I think they provide some kind of in-depth opening analysis (called 'Opening Laboratory' or 'Position Laboratory' or something) for premium members, but not for non-premium members. Thanks again, the Wikibook helps rather well!  
  
  ---
  
  