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Career ratings for: Shishkim, Va

  Date of rating  

World Rank Rating +/- Age
12/31/1997#3769220775
01/31/1998#3441221875
02/28/1998#3393222375
03/31/1998#3437222375
04/30/1998#3405222875
05/31/1998#3494222275
06/30/1998#3547222075
07/31/1998#3646221375
08/31/1998#4087218573
09/30/1998#4234217773
10/31/1998#4237218073
12/31/1998Inactive219886
01/11/1999Inactive219886
01/18/1999Inactive219886
01/25/1999Inactive219986
02/01/1999Inactive221086
02/08/1999Inactive221086
02/15/1999Inactive221086
02/22/1999Inactive221086
03/01/1999Inactive221386
03/08/1999Inactive221486
03/15/1999Inactive221486
03/22/1999Inactive221586
03/29/1999Inactive221586
04/05/1999Inactive221586
04/12/1999Inactive221586
04/19/1999Inactive221686
04/26/1999Inactive221586
05/03/1999Inactive221986
05/10/1999Inactive221886
05/17/1999Inactive221886
05/24/1999Inactive221786
05/31/1999Inactive221786
06/07/1999Inactive221186
06/14/1999Inactive221286
06/21/1999Inactive221186
06/28/1999Inactive221286
07/05/1999Inactive221186
07/12/1999Inactive221186
07/19/1999Inactive221286
07/26/1999Inactive221386
08/02/1999Inactive220686
08/09/1999Inactive220786
08/16/1999Inactive220586
08/23/1999Inactive220686
08/30/1999Inactive220586
09/06/1999Inactive217983
09/13/1999Inactive217883
09/20/1999Inactive217983
09/27/1999Inactive217983
10/04/1999Inactive217283
10/11/1999Inactive217183
10/18/1999Inactive217283
10/25/1999Inactive217283
11/01/1999Inactive217583
11/08/1999Inactive217583
11/15/1999Inactive217583
11/22/1999Inactive217583
11/29/1999Inactive217683

These ratings, calculated for Shishkim, Va, 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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