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Career ratings for: Nguyen Thi Thanh An

  Date of rating  

World Rank Rating +/- Age
07/31/1998#4696213475
08/31/1998#4572215063
09/30/1998#4455216360
10/31/1998#4430216858
11/30/1998#4422217058
12/31/1998#4057219456
01/11/1999#3775219456
01/18/1999#3780219456
01/25/1999#3790219456
02/01/1999#3966212756
02/08/1999#3973212756
02/15/1999#3996212756
02/22/1999#4020212856
03/01/1999#3996213056
03/08/1999#4006213156
03/15/1999#4009213056
03/22/1999#3999213256
03/29/1999#4008213256
04/05/1999#3969213756
04/12/1999#3985213756
04/19/1999#3994213856
04/26/1999#4012213856
05/03/1999#4006213756
05/10/1999#4011213656
05/17/1999#4024213656
05/24/1999#4056213556
05/31/1999#4075213556
06/07/1999#4082213256
06/14/1999#4090213256
06/21/1999#4102213256
06/28/1999#4106213356
07/05/1999#4056213755
07/12/1999#4061213755
07/19/1999#4069213855
07/26/1999#4103213955
08/02/1999#3719217456
08/09/1999#3723217556
08/16/1999#3764217256
08/23/1999#3771217456
08/30/1999#3787217356
09/06/1999#4000214757
09/13/1999#4028214657
09/20/1999#4041214757
09/27/1999#4060214757
10/04/1999#4049213658
10/11/1999#4070213558
10/18/1999#4116213658
10/25/1999#4134213658
11/01/1999#3589217960
11/08/1999#3590217960
11/15/1999#3608217960
11/22/1999#3628217960
11/29/1999#3651218060
12/06/1999#4139210860
12/13/1999#4156210960
12/20/1999#4165210860
12/27/1999#4185210960
01/03/2000#4056213061
01/10/2000#4077213161
01/17/2000#4095213261
01/24/2000#4108213361
01/31/2000#4108213361
02/07/2000#3701212961
02/14/2000#3704212961
02/21/2000#3727213061
02/28/2000#3731213161
03/06/2000#3695213461
03/13/2000#3726213361
03/20/2000#3733213361
03/27/2000#3744213261
04/03/2000#3756213161
04/10/2000#3720213461
04/17/2000#3743213461
04/24/2000#3765213361
05/01/2000#3766213361
05/08/2000#3772213161
05/15/2000#3781213361
05/22/2000#3789213261
05/29/2000#3791213261
06/05/2000#3804213261
06/12/2000#3808213061
06/19/2000#3845213061
06/26/2000#3848213061
07/03/2000#3864213061
07/10/2000#3828213460
07/17/2000#3841213460
07/24/2000#3860213460
07/31/2000#3876213460
08/07/2000#3579216761
08/14/2000#3591216861
08/21/2000#3617216761
08/28/2000#3610216861
09/04/2000#3633216861
09/11/2000#3836214263
09/18/2000#3829214263
09/25/2000#3831214363
10/02/2000#3837214163
10/09/2000#3875213064
10/16/2000#3880212864
10/23/2000#3915212864
10/30/2000#3933212764
11/06/2000#3463217367
11/13/2000#3488217267
11/20/2000#3972212065
11/27/2000#3968212065
12/04/2000#4005211664
12/11/2000#4003210662
12/18/2000#4027210762
12/25/2000#4032210862
01/01/2001#4048210862
01/08/2001#3941212663
01/15/2001#3939212663
01/22/2001#3950212763
01/29/2001#3965212763
02/05/2001#3909212863
02/12/2001#3739212463
02/19/2001#3763212463
02/26/2001#3753212363
03/05/2001#3766212363
03/12/2001#3733212463
03/19/2001#3726212463
03/26/2001#3737212463
04/02/2001#3745212363
04/09/2001#3754212363
04/16/2001#3755212563
04/23/2001#3765212463
04/30/2001#3807212463
05/07/2001#3752214162
05/14/2001#3775214062
05/21/2001#3776213962
05/28/2001#3775213962
06/04/2001#3776213962
06/11/2001#3751214062
06/18/2001#3771214062
06/25/2001#3765214062
07/02/2001#3759214062
07/09/2001#3760214062
07/16/2001#3741214362
07/23/2001#3756214262
07/30/2001#3787214262
08/06/2001#3823214362
08/13/2001#3559217262
08/20/2001#3575217262
08/27/2001#3634217262
09/03/2001#3642217362
09/10/2001#3649217362

These ratings, calculated for Nguyen Thi Thanh An, 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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