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Career ratings for: Johansson, Ingi Randver

  Date of rating  

World Rank Rating +/- Age
12/31/1950#154230473
06/30/1951#174231273
12/31/1951Inactive229583
06/30/1952Inactive230183
12/31/1952Inactive231686
06/30/1953Inactive232886
06/30/1955Inactive236385
12/31/1955Inactive235287
06/30/1959Inactive238478
12/31/1959Inactive238178
03/31/1960Inactive237978
06/30/1960Inactive237389
09/30/1960Inactive237389
12/31/1960Inactive236989
03/31/1961Inactive237489
03/31/1967#336232966
06/30/1967#337233366
09/30/1967#330233765
12/31/1967#320233665
03/31/1968#345232175
06/30/1968#348232475
09/30/1968#353232574
12/31/1968#352232774
03/31/1969Inactive231786
06/30/1969Inactive232286
09/30/1969Inactive232584
12/31/1969Inactive232884
02/28/1970Inactive232684

These ratings, calculated for Johansson, Ingi Randver, 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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