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Career ratings for: Fronczek, Henryk

  Date of rating  

World Rank Rating +/- Age
03/31/1963#420214463
06/30/1963#420214563
09/30/1963#369219862
12/31/1963#351222361
03/31/1964#426213672
06/30/1964#423213872
09/30/1964#383219170
12/31/1964#407221868
03/31/1965Inactive213682
06/30/1965Inactive213682
09/30/1965Inactive219480
12/31/1965#401222775
03/31/1966Inactive214980
06/30/1966Inactive213785
09/30/1966Inactive220184
12/31/1966Inactive222185
02/29/1976#544220775
04/30/1976#553220375
06/30/1976#560220575
08/31/1976#559221875
10/31/1976#566221975
12/31/1976#582223075
02/28/1977Inactive221286
04/30/1977Inactive220886
06/30/1977Inactive220786
08/31/1977Inactive222086
10/31/1977Inactive221886
12/31/1977Inactive222686

These ratings, calculated for Fronczek, Henryk, 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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