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Career ratings for: Shishov, Mikhail Vasilievich

  Date of rating  

World Rank Rating +/- Age
06/30/1955#234227273
12/31/1955#213226473
06/30/1956Inactive226283
12/31/1956Inactive225483
06/30/1957Inactive225481
12/31/1957Inactive224981
12/31/1958Inactive224384
06/30/1959#267227471
12/31/1959#257227472
03/31/1960#292227470
06/30/1960Inactive226677
09/30/1960Inactive226577
12/31/1960Inactive226578
03/31/1961Inactive226880
06/30/1961Inactive226288
09/30/1961Inactive225988
12/31/1961Inactive226289
03/31/1963Inactive224779
06/30/1963Inactive224180
09/30/1963Inactive224180
12/31/1963Inactive224280
02/29/1972Inactive233182
04/30/1972Inactive234282
06/30/1972Inactive233782
08/31/1972Inactive233782
10/31/1972Inactive233682
12/31/1972Inactive233882

These ratings, calculated for Shishov, Mikhail Vasilievich, 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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