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Career ratings for: Pahkla, Peter

  Date of rating  

World Rank Rating +/- Age
01/31/1997Inactive212476
02/28/1997Inactive212576
03/31/1997Inactive212476
04/30/1997#4652210473
05/31/1997#4685210473
06/30/1997#4647211575
07/31/1997#4663211675
08/31/1997#4683211775
09/30/1997#4709211675
10/31/1997#4859210673
11/30/1997#4860210673
12/31/1997#4902210573
01/31/1998Inactive211587
02/28/1998Inactive211587
03/31/1998Inactive211687
04/30/1998Inactive209983
05/31/1998Inactive209883
06/30/1998Inactive211281
07/31/1998Inactive211281
08/31/1998Inactive211281
09/30/1998Inactive211481
10/31/1998Inactive210779
11/30/1998Inactive210579
12/31/1998Inactive210379
01/11/1999Inactive210379
01/18/1999Inactive210379
01/25/1999Inactive210379
02/01/1999Inactive211688
02/08/1999Inactive211788
02/15/1999Inactive211688
02/22/1999Inactive211688
03/01/1999Inactive211788
03/08/1999Inactive211888
03/15/1999Inactive211788
03/22/1999Inactive211788
03/29/1999Inactive211788
04/05/1999Inactive211888
04/12/1999Inactive211888
04/19/1999Inactive211888
04/26/1999Inactive211888
05/03/1999Inactive210086
05/10/1999Inactive209986
05/17/1999Inactive209986
05/24/1999Inactive209986
05/31/1999Inactive209986
06/07/1999Inactive210086
06/14/1999Inactive210086
06/21/1999Inactive209986
06/28/1999Inactive209986

These ratings, calculated for Pahkla, Peter, incorporate all games (against rated opponents) played in the year before the "Date of rating", along with the ratings that were already calculated one year previously. If a player has an insufficient number of games in recent years, there may be gaps in the list, even though you may see ratings listed on previous and/or subsequent dates. Whenever a player has played no rated games for three straight years, or dies, they are removed from the list.

Definition of columns in the above list:

Date of rating is the "effective date" of the rating. The rating calculation does not include any games occurring after the "Date of rating".

World Rank refers to the player's world rank on that date.

Rating is the calculated rating for the player, as of the "Date of Rating". This represents the player's estimated strength on the following day.

+/- is the standard deviation of the player's rating estimate. It is based on a geometric average of the number of rated games played in past years. Players who play very frequently will have a smaller +/- value, indicating a greater confidence in the accuracy of their rating. Players whose +/- value exceeds 76 are classified as "Inactive" due to their infrequent play against rated opponents. Mathematically, a player's rating is an estimate of their exact strength on the day after the "Date of Rating". The +/- value represents the standard deviation of that estimate; the player's true strength on that date should be within one standard deviation of their calculated rating approximately 68% of the time, and within two standard deviations of their calculated rating approximately 95% of the time.

Age is the player's exact age in years, on the "Date of Rating". If a player's age is displayed as a link, that means that this rating was active at the time of their next birthday. Click on the link to see the sorted list of all players' ratings on their birthdays when turning that same age.

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