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Career ratings for: Zhu Chunhui

  Date of rating  

World Rank Rating +/- Age
08/31/1995Inactive218783
09/30/1995#3369220567
10/31/1995#3340220967
11/30/1995#3379220467
12/31/1995#3353220967
01/31/1996#3707219167
02/29/1996#3694219467
03/31/1996#3711219367
04/30/1996#3693219567
05/31/1996#3703219467
06/30/1996#3750218767
07/31/1996#3744218967
08/31/1996#3478221570
09/30/1996Inactive219877
10/31/1996Inactive220177
11/30/1996Inactive219677
12/31/1996Inactive220277
01/31/1997Inactive218376
02/28/1997Inactive218676
03/31/1997Inactive218576
04/30/1997Inactive218876
05/31/1997Inactive218576
06/30/1997Inactive218176
07/31/1997Inactive218276
08/31/1997Inactive220880
09/30/1997Inactive219188
10/31/1997Inactive219488
11/30/1997Inactive218888
12/31/1997Inactive219388
01/31/1998Inactive217387
02/28/1998Inactive217787
03/31/1998Inactive217887
04/30/1998Inactive218287
05/31/1998Inactive218187
06/30/1998Inactive217587
07/31/1998Inactive217687

These ratings, calculated for Zhu Chunhui, 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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