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Career ratings for: Maskova, Jana

  Date of rating  

World Rank Rating +/- Age
06/30/1992Inactive223282
07/31/1992Inactive223582
08/31/1992Inactive223982
09/30/1992Inactive223982
10/31/1992Inactive224482
11/30/1992Inactive221986
12/31/1992Inactive222786
01/31/1993Inactive223086
02/28/1993Inactive222986
03/31/1993Inactive222886
04/30/1993Inactive223086
05/31/1993Inactive222986
07/31/1993Inactive220586
08/31/1993Inactive220986
09/30/1993Inactive226280
10/31/1993Inactive226480
11/30/1993Inactive219487
12/31/1993Inactive220087
01/31/1994#2937219974
02/28/1994#2974219974
03/31/1994#2979219874
04/30/1994#2966220074
05/31/1994#2975220474
06/30/1994Inactive220876
07/31/1994Inactive222477
08/31/1994Inactive222377
09/30/1994Inactive227476
10/31/1994Inactive227576
11/30/1994#2927222375
12/31/1994#2906222575
01/31/1995#3029222073
02/28/1995#3020221973
03/31/1995#3047221973
04/30/1995#3031222273
05/31/1995#3032222373
06/30/1995#2989222974
07/31/1995#2849224375
08/31/1995#2891224475
09/30/1995#2296229074
10/31/1995#2247229574
11/30/1995Inactive224077
12/31/1995Inactive224477
01/31/1996Inactive221679
02/29/1996Inactive221679
03/31/1996Inactive221679
04/30/1996Inactive221779
05/31/1996Inactive221979
06/30/1996Inactive222280
07/31/1996Inactive223580
08/31/1996Inactive223580
09/30/1996Inactive227880
10/31/1996Inactive228180
11/30/1996Inactive222882
12/31/1996Inactive223282
01/31/1997Inactive222479
02/28/1997Inactive222579
03/31/1997Inactive222479
04/30/1997Inactive222679
05/31/1997Inactive222679
06/30/1997Inactive223079
07/31/1997Inactive224279
08/31/1997Inactive224279
09/30/1997Inactive228079
10/31/1997Inactive228479
11/30/1997Inactive223580
12/31/1997Inactive223780
01/31/1998Inactive220883
02/28/1998Inactive220983
03/31/1998Inactive221083
04/30/1998Inactive221483
05/31/1998Inactive221583
06/30/1998Inactive221883
07/31/1998Inactive223084
08/31/1998Inactive222784
09/30/1998Inactive226483
10/31/1998Inactive226783
11/30/1998Inactive221984
12/31/1998Inactive222284
01/11/1999Inactive222284
01/18/1999Inactive222284
01/25/1999Inactive222384

These ratings, calculated for Maskova, Jana, 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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