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Career ratings for: Korsunsky, Rostislav R

  Date of rating  

World Rank Rating +/- Age
06/30/1978#396237572
08/31/1978#413237972
10/31/1978#417237772
12/31/1978#429237572
02/28/1979#432237472
04/30/1979#444237572
06/30/1979Inactive236982
08/31/1979Inactive236982
10/31/1979Inactive236882
12/31/1979Inactive237082
01/31/1980Inactive237282
02/29/1980Inactive237183
03/31/1980Inactive237183
04/30/1980Inactive237383
05/31/1980Inactive237483
05/31/1989#1598219475
06/30/1989#1622219275
07/31/1989#1643218875
08/31/1989#1419226766
09/30/1989#1400227166
10/31/1989#1420227266
11/30/1989#1423227266
12/31/1989#1478226365
01/31/1990#1305231267
02/28/1990#1307231167
03/31/1990#1297230967
04/30/1990#1316230867
05/31/1990#1493227967
06/30/1990#1499228067
07/31/1990#1515227667
08/31/1990#1597226371
09/30/1990#1595226671
10/31/1990#1610226871
11/30/1990#1564227569
12/31/1990#1654226568
01/31/1991Inactive230277
02/28/1991Inactive230277
03/31/1991Inactive230177
04/30/1991Inactive230177
05/31/1991Inactive227676
06/30/1991Inactive227676
07/31/1991Inactive227276
08/31/1991Inactive225981
09/30/1991Inactive226281
10/31/1991Inactive226381
11/30/1991Inactive227279
12/31/1991Inactive226078
01/31/1992Inactive229882
02/29/1992Inactive229982
03/31/1992Inactive229982
04/30/1992Inactive229482
05/31/1992Inactive226981
06/30/1992Inactive226781
07/31/1992Inactive226581
08/31/1992Inactive225284
09/30/1992Inactive225684
10/31/1992Inactive225984
11/30/1992Inactive226683
12/31/1992Inactive225782

These ratings, calculated for Korsunsky, Rostislav R, 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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