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Career ratings for: Aryanejad, Hossein

  Date of rating  

World Rank Rating +/- Age
11/30/1994Inactive226284
12/31/1994Inactive226584
01/31/1995Inactive226285
02/28/1995Inactive226285
03/31/1995Inactive226285
04/30/1995Inactive226485
05/31/1995Inactive226685
06/30/1995Inactive226487
07/31/1995Inactive226187
08/31/1995Inactive226487
09/30/1995Inactive226087
10/31/1995Inactive226387
01/31/1996Inactive225981
02/29/1996Inactive226081
03/31/1996Inactive225981
04/30/1996Inactive225981
05/31/1996Inactive226181
06/30/1996Inactive225882
07/31/1996Inactive225582
08/31/1996Inactive225682
09/30/1996#2742227069
10/31/1996#2744227169
11/30/1996#2848226369
12/31/1996#2827226769
01/31/1997#2872226071
02/28/1997#2884226271
03/31/1997#2902226171
04/30/1997#2907226271
05/31/1997#2869226371
06/30/1997#2888226171
07/31/1997#2924225971
08/31/1997#2947225971
09/30/1997Inactive226278
10/31/1997Inactive226478
11/30/1997Inactive225579
12/31/1997Inactive225879
01/31/1998Inactive225081
02/28/1998Inactive225281
03/31/1998Inactive225381
04/30/1998#2756227072
05/31/1998#2736227272
06/30/1998#2762226972
07/31/1998#2810226772
08/31/1998#2814226572
09/30/1998#2762226875
10/31/1998#2768226875
11/30/1998Inactive226075
12/31/1998Inactive226275
01/11/1999Inactive226275
01/18/1999Inactive226275
01/25/1999Inactive226375
02/01/1999Inactive225476
02/08/1999Inactive225476
02/15/1999Inactive225476
02/22/1999Inactive225576
03/01/1999Inactive225576
03/08/1999Inactive225676
03/15/1999Inactive225576
03/22/1999Inactive225776
03/29/1999Inactive225776
04/05/1999Inactive226276
04/12/1999Inactive226276
04/19/1999Inactive226276
04/26/1999Inactive226276
05/03/1999Inactive226182
05/10/1999Inactive226082
05/17/1999Inactive226082
05/24/1999Inactive225982
05/31/1999Inactive225982
06/07/1999Inactive226082
06/14/1999Inactive226182
06/21/1999Inactive226082
06/28/1999Inactive226182
07/05/1999Inactive226082
07/12/1999Inactive226082
07/19/1999Inactive226182
07/26/1999Inactive226182
08/02/1999Inactive225982
08/09/1999Inactive226182
08/16/1999Inactive225882
08/23/1999Inactive225982
08/30/1999Inactive225882
09/06/1999Inactive225882
09/13/1999Inactive225882
09/20/1999Inactive225882
09/27/1999Inactive225882
10/04/1999Inactive226386
10/11/1999Inactive226286
10/18/1999Inactive226386
10/25/1999Inactive226386
11/01/1999Inactive226486
11/08/1999Inactive226486
11/15/1999Inactive226486
11/22/1999Inactive226486
11/29/1999Inactive226486
12/06/1999Inactive225686
12/13/1999Inactive225786
12/20/1999Inactive225686
12/27/1999Inactive225786
01/03/2000Inactive226086
01/10/2000Inactive226186
01/17/2000Inactive226286
01/24/2000Inactive226286
01/31/2000Inactive226386
02/07/2000Inactive225587
02/14/2000Inactive225487
02/21/2000Inactive225587
02/28/2000Inactive225687
03/06/2000Inactive225787
03/13/2000Inactive225687
03/20/2000Inactive225687
03/27/2000Inactive225587
04/03/2000Inactive225587
04/10/2000Inactive225787
04/17/2000Inactive225787
04/24/2000Inactive225687
05/01/2000Inactive225687
04/09/2001Inactive223888
04/16/2001Inactive224188
04/23/2001Inactive224088
04/30/2001Inactive223988
05/07/2001Inactive223988

These ratings, calculated for Aryanejad, Hossein, 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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