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Career ratings for: Prosviriakov, Vladimir

  Date of rating  

World Rank Rating +/- Age
03/31/1991#1169234775
04/30/1991#1576229073
05/31/1991#1592229073
06/30/1991#1557229873
07/31/1991#1574229673
08/31/1991#1532230573
09/30/1991#1534230573
10/31/1991#1557230273
11/30/1991#1565229973
12/31/1991#1572229873
01/31/1992Inactive234377
02/29/1992Inactive234777
03/31/1992Inactive234586
04/30/1992Inactive225579
05/31/1992Inactive225479
06/30/1992Inactive226079
07/31/1992Inactive226079
08/31/1992Inactive226779
09/30/1992Inactive226879
10/31/1992Inactive226879
11/30/1992Inactive226379
12/31/1992Inactive226679
01/31/1993Inactive230382
02/28/1993Inactive230582
03/31/1993Inactive230588
01/31/1995Inactive230584
02/28/1995Inactive230884
03/31/1995Inactive231086
04/30/1995Inactive226586
05/31/1995Inactive226386
06/30/1995Inactive227086
07/31/1995Inactive226886
08/31/1995Inactive227186
09/30/1995Inactive227186
10/31/1995Inactive227386
11/30/1995Inactive226886
12/31/1995Inactive226986
11/30/1996Inactive226088
12/31/1996Inactive226188
01/31/1997Inactive228785
02/28/1997Inactive229185
03/31/1997Inactive229285
04/30/1997Inactive225085
05/31/1997Inactive224785
06/30/1997Inactive225285
07/31/1997Inactive224985
08/31/1997Inactive225185
09/30/1997Inactive225085
10/31/1997Inactive225185

These ratings, calculated for Prosviriakov, Vladimir, 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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