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Career ratings for: Nilsson, Zandor

  Date of rating  

World Rank Rating +/- Age
06/30/1953#145234067
12/31/1953#145232367
06/30/1954Inactive233077
12/31/1954#163235365
06/30/1955#182236267
12/31/1955#176234873
06/30/1956Inactive235276
12/31/1956Inactive233984
06/30/1957Inactive235981
12/31/1957Inactive234986
06/30/1958Inactive239080
12/31/1958#121244575
06/30/1959#117244773
12/31/1959Inactive243785
03/31/1960Inactive243585
06/30/1960Inactive243683
09/30/1960Inactive243583
12/31/1960#129242863
03/31/1961#139243363
06/30/1961#140243063
09/30/1961#144242763
12/31/1961#137243171
03/31/1962#155243167
06/30/1962#148242866
09/30/1962#155242566
12/31/1962#156242972
03/31/1963#128244473
06/30/1963#128244273
09/30/1963#128244273
12/31/1963Inactive244878
03/31/1964Inactive244475
06/30/1964Inactive244275
09/30/1964Inactive244275
12/31/1964#124246070
03/31/1965#106248572
06/30/1965#109248172
09/30/1965#108248172
12/31/1965Inactive248677
03/31/1966#128246475
06/30/1966#133245975
09/30/1966#136246275
12/31/1966#225239264
03/31/1967#182242263
06/30/1967#189242063
09/30/1967#185242163
12/31/1967#200241369
03/31/1968#184241968
06/30/1968#199241668
09/30/1968#199241368
12/31/1968#280236763
03/31/1969#275237965
06/30/1969#288237865
09/30/1969#282237960
12/31/1969#285237963
02/28/1970#342235760
04/30/1970#300236660
06/30/1970#305236260
08/31/1970#306236360
10/31/1970#316236563
12/31/1970#323235964
02/28/1971#326235968
04/30/1971#302236767
06/30/1971#307236567
08/31/1971#316236567
10/31/1971#315236771
12/31/1971#320235973
02/29/1972Inactive236877
04/30/1972Inactive237776
06/30/1972Inactive237476
08/31/1972Inactive237576
10/31/1972Inactive237481
12/31/1972Inactive236683
02/28/1973Inactive236988
04/30/1973Inactive237687
06/30/1973Inactive237587
08/31/1973Inactive237687

These ratings, calculated for Nilsson, Zandor, 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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