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Career ratings for: Khalilbeili, Sultan

  Date of rating  

World Rank Rating +/- Age
06/30/1955#194234573
12/31/1955#181234173
06/30/1956#145237867
12/31/1956#160237567
06/30/1957#187238772
12/31/1957#176238472
06/30/1958Inactive237282
12/31/1958Inactive237282
03/31/1961Inactive234576
06/30/1961Inactive233377
09/30/1961Inactive233177
12/31/1961Inactive233577
03/31/1962Inactive233787
06/30/1962Inactive232688
09/30/1962Inactive232488
12/31/1962Inactive232888
03/31/1963Inactive232088
06/30/1963Inactive230989
09/30/1963Inactive230989
12/31/1963Inactive231289
03/31/1964Inactive232378
06/30/1964Inactive231478
09/30/1964Inactive231478
12/31/1964Inactive231878
03/31/1965Inactive232889
06/30/1965Inactive231789
09/30/1965Inactive231789
12/31/1965Inactive232189

These ratings, calculated for Khalilbeili, Sultan, 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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