Answers.Body: <p>Chessbase already performs this function in "Opening Report" feature. Telling avg # of moves of the games occurring in the database. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-11-18T18:13:07.270Z
Answers.LastActivityDate: 2015-11-18T18:13:07.270Z
Answers.UserDisplayName: user8778
Answers.Body: <p>I wrote a simple PHP script which parses ELO codes and the corresponding number of moves from chess games in PGN files. This script will output the ELO code and number of moves into a CSV file. The averages can then easily be evaluated in Excel for example.</p>
  
  <p>I ran my script on a PGN file with about 6000 games which I downloaded from <a href="http://www.theweekinchess.com/twic" rel="nofollow noreferrer">The Week in Chess</a>. You can view the result here:</p>
  
  <p><img src="https://i.sstatic.net/hOFWx.png" alt="Average # of moves per ECO"></p>
  
  <p><a href="https://i.sstatic.net/hOFWx.png" rel="nofollow noreferrer">Full size</a></p>
  
  <p>If you want to evaluate millions of games, to get better averages, I suggest you use Pig script or some other scripting languages which can easily handle big chunks of data.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-09-19T14:47:36.193Z
Answers.LastActivityDate: 2014-09-19T14:47:36.193Z
Answers.UserDisplayName: 0xMB
Answers.Body: <p>It's not about opening, it's about level of players in game. Beginner vs beginner game tends to have more moves on average, because they do not surrender easily. One forces second to mate him with his rook or something and it lasts forever. Games of serious players are mostly drawish, so let's say 20-40 moves on average. Of course, there are so many exceptions, long endgames etc, but they are rarely met in comparision to "fast" draws. It is really hard to give you exact answer on this. Try to ask more precisevely so we might figure out something</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-09-19T16:11:34.030Z
Answers.LastActivityDate: 2014-09-19T16:11:34.030Z
Answers.UserDisplayName: Pijotrek
Answers.Body: <p>I've heard that in high level games the average move count is about 40. It is important to note that there are some quick draws and resignations, thus if a game was played to checkmate, the move count would be higher than 40. I would expect that closed games last longer than open games. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-09-18T16:27:28.167Z
Answers.LastActivityDate: 2014-09-18T16:27:28.167Z
Answers.UserDisplayName: CognisMantis
Answers.Body: <p>If you consider the ChessGames.com database, whose statistics are posted on <a href="http://www.chessgames.com/chessstats.html" rel="nofollow noreferrer">http://www.chessgames.com/chessstats.html</a>, that would be around 40 moves. I do not posses the program, but on ChessBase you may use any Mega Database, as pointed out on the thread <a href="https://chess.stackexchange.com/questions/2506/what-is-the-average-length-of-a-game-of-chess">What is the average length of a game of chess?</a>, check it yourself: you can introduce the first moves of the opening you desire and look up the "median move value".</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-09-19T13:24:24.223Z
Answers.LastActivityDate: 2014-09-19T13:24:24.223Z
Answers.LastEditDate: 2017-04-13T12:48:53.737Z
Answers.UserDisplayName: Pablo S. Ocal
Body: <p>What are the average number of moves per game with regards to what opening has been played?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-09-16T17:49:55.690Z
Comments.Text: In regards to what ELO rating? Because total average is a lot more different than GM average, or Super GM average
Comments.UserDisplayName: MikhailTal
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-09-16T20:45:25.057Z
Comments.Text: Average number of moves per game (and other interesting statistics) from a large base of games can be found here: http://www.chessgames.com/chessstats.html 
  Could not find one where it was divided for different openings, though.
Comments.UserDisplayName: GloriaVictis
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-09-19T16:21:35.373Z
Comments.Text: Also I bet you could relate game length to the era and time controls... once upon a time adjourning a game after 40 moves to be continued the next day was common.  I could see more people agreeing to draws after checking a position over night.  For time controls that are 40 moves in 2 hours, you often see time based loss spikes at the control, or higher rate of mistakes near the time control.
Comments.UserDisplayName: tbischel
Tags: <opening><statistics>
Title: Average number of moves per game
ThreadText: # Average number of moves per game
  
  (Asked by: username_0 on 2014-09-16)
  
  What are the average number of moves per game with regards to what opening has been played?
  
  **Tags:** opening, statistics
  
  > **Comments:**
  > **username_1**: In regards to what ELO rating? Because total average is a lot more different than GM average, or Super GM average  
  > **username_2**: Average number of moves per game (and other interesting statistics) from a large base of games can be found here: http://www.chessgames.com/chessstats.html  Could not find one where it was divided for different openings, though.  
  > **username_3**: Also I bet you could relate game length to the era and time controls... once upon a time adjourning a game after 40 moves to be continued the next day was common.  I could see more people agreeing to draws after checking a position over night.  For time controls that are 40 moves in 2 hours, you often see time based loss spikes at the control, or higher rate of mistakes near the time control.  
  
  ---
  
  ## 5 answers
  
  ### Answer by username_4 on 2015-11-18. Score: 2
  
  Chessbase already performs this function in "Opening Report" feature. Telling avg # of moves of the games occurring in the database.
  
  
  ---
  
  ### Answer by username_5 on 2014-09-19. Score: 2
  
  I wrote a simple PHP script which parses ELO codes and the corresponding number of moves from chess games in PGN files. This script will output the ELO code and number of moves into a CSV file. The averages can then easily be evaluated in Excel for example.
  
  I ran my script on a PGN file with about 6000 games which I downloaded from [The Week in Chess](http://www.theweekinchess.com/twic). You can view the result here:
  
  ![Average # of moves per ECO](https://i.sstatic.net/hOFWx.png)
  
  [Full size](https://i.sstatic.net/hOFWx.png)
  
  If you want to evaluate millions of games, to get better averages, I suggest you use Pig script or some other scripting languages which can easily handle big chunks of data.
  
  
  ---
  
  ### Answer by username_6 on 2014-09-19. Score: 2
  
  It's not about opening, it's about level of players in game. Beginner vs beginner game tends to have more moves on average, because they do not surrender easily. One forces second to mate him with his rook or something and it lasts forever. Games of serious players are mostly drawish, so let's say 20-40 moves on average. Of course, there are so many exceptions, long endgames etc, but they are rarely met in comparision to "fast" draws. It is really hard to give you exact answer on this. Try to ask more precisevely so we might figure out something
  
  
  ---
  
  ### Answer by username_7 on 2014-09-18. Score: 1
  
  I've heard that in high level games the average move count is about 40. It is important to note that there are some quick draws and resignations, thus if a game was played to checkmate, the move count would be higher than 40. I would expect that closed games last longer than open games.
  
  
  ---
  
  ### Answer by username_8 on 2014-09-19. Score: 1
  
  If you consider the ChessGames.com database, whose statistics are posted on <http://www.chessgames.com/chessstats.html>, that would be around 40 moves. I do not posses the program, but on ChessBase you may use any Mega Database, as pointed out on the thread [What is the average length of a game of chess?](https://chess.stackexchange.com/questions/2506/what-is-the-average-length-of-a-game-of-chess), check it yourself: you can introduce the first moves of the opening you desire and look up the "median move value".
  
  
  ---
  
  