Answers.Body: <p>By "points" you probably mean rating "points". Rating is a measure of player's strength, not a prize for their performance. To me, talking about "gaining rating points" sounds a bit wrong. A player's rating increases if he wins and decreases if he loses. In the case of a draw, player's rating moves closer to his opponent's rating (or does not change if the rating difference is small).</p>
  
  <p>Here's how the Elo system works:</p>
  
  <p>The result of a game is 1 for a win, 0.5 for a draw, and 0 for a loss. The expected score of a player A against player B is a function of their rating difference. For FIDE ratings, see the tables in Section 8 <a href="http://www.fide.com/component/handbook/?id=161&amp;view=article" rel="nofollow">here</a>. After a tournament or a match, the rating is then updated using the formula</p>
  
  <p>(new rating) = (old rating) + K * (result - expected result),</p>
  
  <p>where in the FIDE system K=30 for players with few games, K=10 for players whose rating has been above 2400, and K=15 for other players.</p>
  
  <p>If player A's expected score is E, then player B's expected score is 1-E. Thus,
  when two players play against each other e.g. in a match and their K-factor is equal, one can easily see player A's rating increases by the same amount player B's rating decreases.</p>
  
  <p>For more information, see e.g. the <a href="http://en.wikipedia.org/wiki/Elo_rating_system" rel="nofollow">Wikipedia article</a>.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-01-14T09:27:16.443Z
Answers.LastActivityDate: 2014-01-14T09:27:16.443Z
Answers.UserDisplayName: JiK
Answers.Body: <p>Two links for convenience:</p>
  
  <ul>
  <li><a href="http://ratings.fide.com/calculator_rtd.phtml" rel="nofollow">FIDE Rating Change calculator</a></li>
  <li><a href="http://ratings.fide.com/calculator_rp.phtml" rel="nofollow">FIDE Initial Rating calculator (Rating performance)</a></li>
  </ul>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-01-19T22:01:14.607Z
Answers.LastActivityDate: 2014-01-19T22:01:14.607Z
Answers.UserDisplayName: alip
Body: <p>In <a href="https://chess.stackexchange.com/q/2886/167">another post</a> it was written that for games played during the 2013 World Championship match, Carlsen gained 3.7 points if he wins, Anand gained 6.3 points if he wins, and that in a draw Carlsen lost 1.3 points that Anand gained.
  How were these numbers arrived at?</p>
  
Tags: <rating><statistics><elo>
Title: How can I find the gained points per game?
ThreadText: # How can I find the gained points per game?
  
  (Asked by: username_0 on 2014-01-14)
  
  In [another post](https://chess.stackexchange.com/q/2886/167) it was written that for games played during the 2013 World Championship match, Carlsen gained 3.7 points if he wins, Anand gained 6.3 points if he wins, and that in a draw Carlsen lost 1.3 points that Anand gained.
  How were these numbers arrived at?
  
  **Tags:** rating, statistics, elo
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2014-01-14. Score: 4
  
  By "points" you probably mean rating "points". Rating is a measure of player's strength, not a prize for their performance. To me, talking about "gaining rating points" sounds a bit wrong. A player's rating increases if he wins and decreases if he loses. In the case of a draw, player's rating moves closer to his opponent's rating (or does not change if the rating difference is small).
  
  Here's how the Elo system works:
  
  The result of a game is 1 for a win, 0.5 for a draw, and 0 for a loss. The expected score of a player A against player B is a function of their rating difference. For FIDE ratings, see the tables in Section 8 [here](http://www.fide.com/component/handbook/?id=161&view=article). After a tournament or a match, the rating is then updated using the formula
  
  (new rating) = (old rating) + K \* (result - expected result),
  
  where in the FIDE system K=30 for players with few games, K=10 for players whose rating has been above 2400, and K=15 for other players.
  
  If player A's expected score is E, then player B's expected score is 1-E. Thus,
  when two players play against each other e.g. in a match and their K-factor is equal, one can easily see player A's rating increases by the same amount player B's rating decreases.
  
  For more information, see e.g. the [Wikipedia article](http://en.wikipedia.org/wiki/Elo_rating_system).
  
  
  ---
  
  ### Answer by username_2 on 2014-01-19. Score: 2
  
  Two links for convenience:
  
  * [FIDE Rating Change calculator](http://ratings.fide.com/calculator_rtd.phtml)
  * [FIDE Initial Rating calculator (Rating performance)](http://ratings.fide.com/calculator_rp.phtml)
  
  
  ---
  
  