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Career ratings for: Ivanov, Oleg

  Date of rating  

World Rank Rating +/- Age
01/31/1991Inactive236179
02/28/1991Inactive236679
03/31/1991Inactive236779
04/30/1991Inactive237079
05/31/1991Inactive237079
06/30/1991Inactive237179
07/31/1991Inactive236779
08/31/1991Inactive236879
09/30/1991Inactive237079
10/31/1991Inactive236979
11/30/1991Inactive236979
12/31/1991#1282234065
01/31/1992#987238363
02/29/1992#946238963
03/31/1992#942239063
04/30/1992#925239063
05/31/1992#939238963
06/30/1992#947238863
07/31/1992#959238763
08/31/1992#971238863
09/30/1992#964239063
10/31/1992#989239063
11/30/1992#986238763
12/31/1992#1314235268
01/31/1993#1092237772
02/28/1993#1051238372
03/31/1993#1036238372
04/30/1993#1018238672
05/31/1993#1043238472
06/30/1993#1035238472
07/31/1993#1065238172
08/31/1993#1074238172
09/30/1993#1056238272
10/31/1993#1084238172
11/30/1993#1081238172
12/31/1993Inactive234478
01/31/1994Inactive237082
02/28/1994Inactive237582
03/31/1994Inactive237482
04/30/1994Inactive237782
05/31/1994Inactive237882
06/30/1994Inactive237882
07/31/1994Inactive237682
08/31/1994Inactive237582
09/30/1994Inactive237682
10/31/1994Inactive237382
11/30/1994Inactive237582
12/31/1994Inactive233689
01/31/1995Inactive234985
02/28/1995Inactive235880
03/31/1995Inactive235780
04/30/1995Inactive236080
05/31/1995Inactive235880
06/30/1995Inactive235980
07/31/1995Inactive236476
08/31/1995Inactive236576
09/30/1995Inactive236576
10/31/1995#1211238374
11/30/1995#1218238274
12/31/1995#1516235475
01/31/1996Inactive237277
02/29/1996Inactive237976
03/31/1996Inactive237876
04/30/1996Inactive237976
05/31/1996Inactive237776
06/30/1996Inactive237576
07/31/1996#1273237774
08/31/1996#1294237774
09/30/1996#1310237574
10/31/1996#1170238973
11/30/1996#1162238873
12/31/1996#1448236474
01/31/1997Inactive236488
02/28/1997Inactive237187
03/31/1997Inactive237087
04/30/1997Inactive237387
05/31/1997Inactive236987
06/30/1997Inactive236987
07/31/1997Inactive237085
08/31/1997Inactive237085
09/30/1997Inactive236885
10/31/1997Inactive238283
11/30/1997Inactive238083
12/31/1997Inactive235484

These ratings, calculated for Ivanov, Oleg, 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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