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Career ratings for: Aturupane, Harsha

  Date of rating  

World Rank Rating +/- Age
11/30/1984Inactive228781
12/31/1984Inactive228781
04/30/1985Inactive226177
05/31/1985Inactive226177
06/30/1985Inactive225781
07/31/1985Inactive226081
08/31/1985Inactive225677
09/30/1985Inactive225677
10/31/1985Inactive227878
04/30/1986Inactive225688
05/31/1986Inactive225788
08/31/1986Inactive225088
09/30/1986Inactive225088
10/31/1986Inactive227189
11/30/1986Inactive229076
12/31/1986Inactive228876
01/31/1987Inactive228176
02/28/1987Inactive228376
03/31/1987Inactive228376
04/30/1987#943227875
05/31/1987#936227875
06/30/1987Inactive226476
07/31/1987#925228573
08/31/1987#945227772
09/30/1987#961227672
10/31/1987#920229873
11/30/1987Inactive227986
12/31/1987Inactive227686
01/31/1988Inactive227387
02/29/1988Inactive227987
03/31/1988Inactive227987
04/30/1988Inactive227786
05/31/1988Inactive227686
06/30/1988Inactive226286
07/31/1988Inactive228383
08/31/1988Inactive227583
09/30/1988Inactive227583
10/31/1988Inactive229483

These ratings, calculated for Aturupane, Harsha, 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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