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Career ratings for: Kleopas, George

  Date of rating  

World Rank Rating +/- Age
09/30/1962#404212171
12/31/1962#402212271
03/31/1963#440210069
06/30/1963#436210069
09/30/1963Inactive211081
12/31/1963Inactive210881
03/31/1964Inactive209379
06/30/1964Inactive209379
12/31/1964Inactive212180
03/31/1965#490211275
06/30/1965#494211075
09/30/1965Inactive212679
03/31/1966Inactive210386
06/30/1966Inactive210086
12/31/1966#498213873
03/31/1967#537212272
06/30/1967#548212172
09/30/1967#532213773
12/31/1967Inactive213183
03/31/1968Inactive211782
06/30/1968Inactive211582
09/30/1968Inactive212783
12/31/1968Inactive213286
03/31/1969Inactive212086
06/30/1969Inactive212086
09/30/1969Inactive213486
10/31/1970Inactive214382
12/31/1970Inactive214285
02/28/1971Inactive213885
04/30/1971Inactive212685
06/30/1971Inactive212685
08/31/1971Inactive212685
10/31/1972Inactive215576
12/31/1972Inactive215476
02/28/1973#622215871
04/30/1973#608215071
06/30/1973#613215071
08/31/1973#618214971
10/31/1973Inactive215087
12/31/1973Inactive214987
02/28/1974Inactive215181
04/30/1974Inactive214181
06/30/1974Inactive214081
08/31/1974Inactive214081

These ratings, calculated for Kleopas, George, 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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