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Career ratings for: Mari Arul, S.

  Date of rating  

World Rank Rating +/- Age
01/31/1996#2906225771
02/29/1996#2879226071
03/31/1996#2894225971
04/30/1996#2915225671
05/31/1996#2945225471
06/30/1996#2899225471
07/31/1996#2865225771
08/31/1996#3289223073
09/30/1996#3290223273
10/31/1996#3286223273
11/30/1996#3317223073
12/31/1996#3309223373
01/31/1997Inactive224981
02/28/1997#2477228972
03/31/1997#2511228872
04/30/1997#2564228672
05/31/1997#2575228372
06/30/1997#2554228472
07/31/1997#2515228772
08/31/1997#2473229073
09/30/1997#2361229573
10/31/1997#2362229673
11/30/1997#2346229573
12/31/1997#2330229573
01/31/1998Inactive228376
02/28/1998Inactive227982
03/31/1998Inactive228082
04/30/1998#2682227575
05/31/1998#2716227375
06/30/1998#2706227375
07/31/1998#2651227775
08/31/1998#2612227875
09/30/1998#2521228375
10/31/1998#2538228375
11/30/1998#2539228275
12/31/1998#2532228275
01/11/1999#2344228275
01/18/1999#2344228275
01/25/1999#2344228375
02/01/1999Inactive227277
02/08/1999Inactive227377
02/15/1999Inactive227277
02/22/1999Inactive227377
03/01/1999Inactive226580
03/08/1999Inactive226780
03/15/1999Inactive226680
03/22/1999Inactive226780
03/29/1999Inactive226780
04/05/1999Inactive226880
04/12/1999Inactive226880
04/19/1999Inactive226980
04/26/1999Inactive226980
05/03/1999Inactive226785
05/10/1999Inactive226685
05/17/1999Inactive226685
05/24/1999Inactive226485
05/31/1999Inactive226585
06/07/1999Inactive226285
06/14/1999Inactive226285
06/21/1999Inactive226285
06/28/1999Inactive226385
07/05/1999Inactive226485
07/12/1999Inactive226585
07/19/1999Inactive226585
07/26/1999Inactive226685
08/02/1999Inactive226985
08/09/1999Inactive227085
08/16/1999Inactive226885
08/23/1999Inactive226985
08/30/1999Inactive226885
09/06/1999Inactive227286
09/13/1999Inactive227186
09/20/1999Inactive227286
09/27/1999Inactive227286
10/04/1999Inactive227886
10/11/1999Inactive227786
10/18/1999Inactive227886
10/25/1999Inactive227886
11/01/1999Inactive227986
11/08/1999Inactive227886
11/15/1999Inactive227986
11/22/1999Inactive227886
11/29/1999Inactive227986
12/06/1999Inactive227886
12/13/1999Inactive227986
12/20/1999Inactive227886
12/27/1999Inactive227886
01/03/2000Inactive228086
01/10/2000Inactive228186
01/17/2000Inactive228286
01/24/2000Inactive228286
01/31/2000Inactive228386
02/07/2000Inactive227388
02/14/2000Inactive227388
02/21/2000Inactive227388
02/28/2000Inactive227488

These ratings, calculated for Mari Arul, S., 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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