 Effective from 1 July 2014, FIDE made some changes in the rules of calculating Elo results, including the FIDE chess ratings. The following list will give you a general idea of the Updated 1 July 2014 FIDE Rating System:
1. The Kfactor values
Effective from 1 July 2014:
• The Kfactor 10.
• The Kfactor 20.
• The Kfactor 40.
Before 1 July 2014, now cancelled:
• The Kfactor 10.
• The Kfactor 15.
• The Kfactor 30.
2. The Kfactor assignments
Effective from 1 July 2014:
• The Kfactor is 40 for a player new to the rating list until he has completed events with at least 30 games; • The Kfactor is 20 as long as a player's rating remains under 2400; • The Kfactor is 10 once a player's published rating has reached 2400 and remains at that level subsequently, even if the rating drops below 2400. • The Kfactor is 40 for all players until their 18th birthday, as long as their rating remains under 2300 (then 20).
Before 1 July 2014, now cancelled:
• The Kfactor is 30 for players new to the rating list, until they have completed events with a total of at least 30 games; • The Kfactor is 15 for players with a rating under 2400; • The Kfactor is 10 once the player has reached 2400 and been registered for at least 30 games. Thereafter it remains permanently at 10, even if the player’s rating is under 2400 at a later stage.
3. The Table of Winning Probability
No change, the Table is the same.
4. The FIDE Rule of 400 Points
No change, the Rule of 400 Points is still in force.
• The Rule of 400 Points works from 1 July 2009.
• It replaced the Rule of 350 Points, which was in force before 1 July 2009.
5. Table of Performance Change
No change, the Table is the same.
6. The Minimum Performance Rating Needed for the Norm
Effective Now (and was effective from 1 July 2009):
• For the GM Norm 2600
• For the IM Norm 2450
• For the WGM Norm 2400
• For the WIM Norm 2250
Before 1 July 2009, now cancelled:
• For the GM Norm 2601
• For the IM Norm 2451
• For the WGM Norm 2401
• For the WIM Norm 2251
7. The FIDE Norm Requirements
Few Changes, for getting norms in some toptournament events.
8. The FIDE Rating Floor
Effective from 1 July 2014:
• 1000.
Before 1 July 2014, now cancelled:
• 1200.
Before 1 July 2009, now cancelled:
• 1600.
9. The FIDE Rating List to Be Published
Effective Now (and was effective from 1 July 2012):
• 12 Times a Year: 1 January, 1 February, 1 March, 1 April, 1 May, 1 June, 1 July, 1 August, 1 September, 1 October, 1 November, and 1 December.
Before 1 July 2012, now cancelled:
• 6 Times a Year: 1 January, 1 March, 1 May, 1 July, 1 September, and 1 November.
Before 1 July 2009, now cancelled:
• 4 Times a Year: 1 January, 1 April, 1 July, and 1 October.
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