Answers.Body: <p>I think you are looking for my <a href="https://itunes.apple.com/us/app/encyclopedia-chess-openings/id1165950660?mt=8" rel="nofollow noreferrer">Encyclopaedia of Chess Opening</a> iOS app.</p>
  
  <p><a href="https://i.sstatic.net/rMD3j.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/rMD3j.jpg" alt="enter image description here"></a></p>
  
  <p>This app provides you the ECO openings, annoated games for each opening and lots of variation. There is an engine embedded for you to explore lines and positions.</p>
  
  <p>However, this is <strong>not</strong> a free app but it costs less than a McDonald BigMac. Please consider if you are interested.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-12-12T13:24:56.757Z
Answers.LastActivityDate: 2016-12-12T13:44:59.587Z
Answers.LastEditDate: 2016-12-12T13:44:59.587Z
Answers.UserDisplayName: SmallChess
Answers.Body: <p>What do you call an opening? ECO would not be very deep, only a couple of moves usually.</p>
  
  <p>On the other hand, if you get really deep, the number of variations will increase dramatically and you won't have time to study each and every variant down to move 20 or so.</p>
  
  <p>I'd suggest to find out what kind of opening s you like (closed/positional, open/tactical, popular, off-beat, ...) and thereby limit your choices. Use a regular database and study how grandmasters handle the opening of your choice.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-12-11T22:17:59.253Z
Answers.LastActivityDate: 2016-12-11T22:17:59.253Z
Answers.UserDisplayName: user1583209
Body: <p>Is there any a free software or free pgn files that presents a survey of all openings and their variations (the deeper the best) similar to those found in chess opening references like MCO or ECO ? I just want to explore and analyze the resulting moves and positions by myself. I am not asking for games but rather just openings and their variations in a software version instead of normal books. </p>
  
Tags: <opening><software><database><pgn>
Title: software for a survey of chess openings
ThreadText: # software for a survey of chess openings
  
  (Asked by: username_0 on 2016-12-11)
  
  Is there any a free software or free pgn files that presents a survey of all openings and their variations (the deeper the best) similar to those found in chess opening references like MCO or ECO ? I just want to explore and analyze the resulting moves and positions by myself. I am not asking for games but rather just openings and their variations in a software version instead of normal books.
  
  **Tags:** opening, software, database, pgn
  
  
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  ## 2 answers
  
  ### Answer by username_1 on 2016-12-12. Score: 2
  
  I think you are looking for my [Encyclopaedia of Chess Opening](https://itunes.apple.com/us/app/encyclopedia-chess-openings/id1165950660?mt=8) iOS app.
  
  [![enter image description here](https://i.sstatic.net/rMD3j.jpg)](https://i.sstatic.net/rMD3j.jpg)
  
  This app provides you the ECO openings, annoated games for each opening and lots of variation. There is an engine embedded for you to explore lines and positions.
  
  However, this is **not** a free app but it costs less than a McDonald BigMac. Please consider if you are interested.
  
  
  ---
  
  ### Answer by username_2 on 2016-12-11. Score: 1
  
  What do you call an opening? ECO would not be very deep, only a couple of moves usually.
  
  On the other hand, if you get really deep, the number of variations will increase dramatically and you won't have time to study each and every variant down to move 20 or so.
  
  I'd suggest to find out what kind of opening s you like (closed/positional, open/tactical, popular, off-beat, ...) and thereby limit your choices. Use a regular database and study how grandmasters handle the opening of your choice.
  
  
  ---
  
  