Answers.Body: <p>In the example given, the opening move was Nf3. A number of the main lines were given, eight more moves for Black, seven more moves for White. Then the percentages of games won by White (in tournaments) using the respective lines were tallied.</p>
  
  <p>Here's a link to the table:</p>
  
  <p><a href="http://en.wikipedia.org/wiki/Chess_opening_theory_table" rel="nofollow">http://en.wikipedia.org/wiki/Chess_opening_theory_table</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-02-20T02:23:27.217Z
Answers.Text: Thank you for adding a better answer. Only thing that might improve it would be to take a screen grab of the table on Wiki, and crop the pic to show just the data you're referencing in your answer; doing so would make the answer easy to read, and insure if the table disappears/changes that you're answer still makes sense. Again, thank you!
Answers.UserDisplayName: blunders
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-02-20T22:37:06.347Z
Answers.Text: @blunders: done.
Answers.UserDisplayName: Tom Au
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-02-19T22:25:47.643Z
Answers.LastActivityDate: 2013-02-20T22:36:34.270Z
Answers.LastEditDate: 2013-02-20T22:36:34.270Z
Answers.UserDisplayName: Tom Au
Answers.Body: <p>The two figures in the “Σ%” column are the number of games referenced in the database (so “Σ” should be understood in its mathematical meaning, “total” or “sum”) and the percentage of games won by White.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-05-14T22:04:05.953Z
Answers.LastActivityDate: 2012-05-14T22:04:05.953Z
Answers.UserDisplayName: sam hocevar
Body: <p>On this <a href="http://en.wikipedia.org/wiki/Chess_opening_theory_table" rel="noreferrer">example chess opening theory table</a>, what does "Σ%" and the number before it mean?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2012-05-14T20:11:11.990Z
Comments.Text: Did you maybe forget to paste a link?
Comments.UserDisplayName: sam hocevar
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2012-05-14T20:50:06.447Z
Comments.Text: +1 @Sam Hocevar: Oops, I mean the internet ate the link, it's back now. Thanks!
Comments.UserDisplayName: blunders
Tags: <opening>
Title: What is the meaning of this chess opening theory table?
ThreadText: # What is the meaning of this chess opening theory table?
  
  (Asked by: username_0 on 2012-05-14)
  
  On this [example chess opening theory table](http://en.wikipedia.org/wiki/Chess_opening_theory_table), what does "Σ%" and the number before it mean?
  
  **Tags:** opening
  
  > **Comments:**
  > **username_1**: Did you maybe forget to paste a link?  
  > **username_0**: +1 @username_1: Oops, I mean the internet ate the link, it's back now. Thanks!  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2013-02-19. Score: 3 | Accepted answer
  
  In the example given, the opening move was Nf3. A number of the main lines were given, eight more moves for Black, seven more moves for White. Then the percentages of games won by White (in tournaments) using the respective lines were tallied.
  
  Here's a link to the table:
  
  <http://en.wikipedia.org/wiki/Chess_opening_theory_table>
  
  > **Comments:**
  > **username_0**: Thank you for adding a better answer. Only thing that might improve it would be to take a screen grab of the table on Wiki, and crop the pic to show just the data you're referencing in your answer; doing so would make the answer easy to read, and insure if the table disappears/changes that you're answer still makes sense. Again, thank you!  
  > **username_2**: @username_0: done.  
  
  ---
  
  ### Answer by username_1 on 2012-05-14. Score: 3
  
  The two figures in the “Σ%” column are the number of games referenced in the database (so “Σ” should be understood in its mathematical meaning, “total” or “sum”) and the percentage of games won by White.
  
  
  ---
  
  