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Career ratings for: Beer, Robert

  Date of rating  

World Rank Rating +/- Age
10/31/1997#3816220373
11/30/1997#3851220173
12/31/1997#3862220273
01/31/1998#3864219173
02/28/1998#3827219573
03/31/1998#3871219473
04/30/1998#3853219773
05/31/1998#3894219473
06/30/1998#3948219373
07/31/1998#3800220373
08/31/1998#3901219873
09/30/1998#3879219973
10/31/1998Inactive219583
11/30/1998Inactive219283
12/31/1998Inactive219383
01/11/1999Inactive219383
01/18/1999Inactive219383
01/25/1999Inactive219383
02/01/1999Inactive218383
02/08/1999Inactive218383
02/15/1999Inactive218383
02/22/1999Inactive218383
03/01/1999Inactive218583
03/08/1999Inactive218683
03/15/1999Inactive218683
03/22/1999Inactive218783
03/29/1999Inactive218783
04/05/1999Inactive218783
04/12/1999Inactive218783
04/19/1999Inactive218783
04/26/1999Inactive218783
05/03/1999Inactive218883
05/10/1999Inactive218783
05/17/1999Inactive218783
05/24/1999Inactive218683
05/31/1999Inactive218683
06/07/1999Inactive218383
06/14/1999Inactive218383
06/21/1999Inactive218383
06/28/1999Inactive218383
07/05/1999Inactive218483
07/12/1999Inactive218483
07/19/1999Inactive218583
07/26/1999Inactive218683
08/02/1999Inactive219583
08/09/1999Inactive219783
08/16/1999Inactive219483
08/23/1999Inactive219583
08/30/1999Inactive219583
09/06/1999Inactive219283
09/13/1999Inactive219183
09/20/1999Inactive219283
09/27/1999Inactive219283
10/04/1999Inactive219383
10/11/1999Inactive219383
10/18/1999Inactive219383
10/25/1999Inactive219383

These ratings, calculated for Beer, Robert, 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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