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Career ratings for: Bieri, Christian

  Date of rating  

World Rank Rating +/- Age
01/31/1995Inactive219478
02/28/1995Inactive219478
03/31/1995Inactive219478
04/30/1995Inactive219178
05/31/1995Inactive219378
06/30/1995Inactive219678
07/31/1995Inactive220178
08/31/1995Inactive219678
09/30/1995Inactive220178
10/31/1995Inactive220578
11/30/1995Inactive220378
12/31/1995Inactive220578
01/31/1996#3912217273
02/29/1996#3921217373
03/31/1996#3928217373
04/30/1996#3920217173
05/31/1996#3902217273
06/30/1996#3927216973
07/31/1996#3887217573
08/31/1996#4016216973
09/30/1996#4051217173
10/31/1996#4018217373
11/30/1996#4069217073
12/31/1996#4080217273
01/31/1997#4054217575
02/28/1997#4056217675
03/31/1997#4102217575
04/30/1997#4115217475
05/31/1997#4140217375
06/30/1997#4144217375
07/31/1997#4093217875
08/31/1997#4178217375
09/30/1997#4175217375
10/31/1997#4212217575
11/30/1997#4246217275
12/31/1997#4266217375
01/31/1998Inactive216486
02/28/1998Inactive216686
03/31/1998Inactive216786
04/30/1998Inactive216886
05/31/1998Inactive216986
06/30/1998Inactive216786
07/31/1998Inactive217286
08/31/1998Inactive216586
09/30/1998Inactive216686
10/31/1998Inactive216786
11/30/1998Inactive216386
12/31/1998Inactive216486
01/11/1999Inactive216486
01/18/1999Inactive216486
01/25/1999Inactive216586
04/09/2001Inactive214481
04/16/2001Inactive214481
04/23/2001Inactive214381
04/30/2001Inactive214181
05/07/2001Inactive214381
05/14/2001Inactive214581
05/21/2001Inactive214381
05/28/2001Inactive214381
06/04/2001Inactive214381
06/11/2001Inactive214181
06/18/2001Inactive214281
06/25/2001Inactive214381
07/02/2001Inactive214481
07/09/2001Inactive214381
07/16/2001Inactive214381
07/23/2001Inactive214381
07/30/2001Inactive214381
08/06/2001Inactive214381
08/13/2001Inactive214581
08/20/2001Inactive214581
08/27/2001Inactive214581
09/03/2001Inactive214581
09/10/2001Inactive214581

These ratings, calculated for Bieri, Christian, 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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