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Career ratings for: Press, Grigory

  Date of rating  

World Rank Rating +/- Age
03/31/1961Inactive227077
06/30/1961Inactive226978
09/30/1961Inactive226678
12/31/1961Inactive227078
03/31/1962Inactive226288
06/30/1962Inactive226189
09/30/1962Inactive226089
12/31/1962Inactive226489
01/31/1982#363241470
02/28/1982#339242168
03/31/1982#340242068
04/30/1982#359241970
05/31/1982#358241770
06/30/1982#370241570
07/31/1982#369241470
08/31/1982#376241670
09/30/1982#379241270
10/31/1982#390241468
11/30/1982#393241368
12/31/1982#410240968
01/31/1983Inactive241080
02/28/1983Inactive241878
03/31/1983Inactive241878
04/30/1983Inactive241880
05/31/1983Inactive241780
06/30/1983Inactive241480
07/31/1983Inactive241380
08/31/1983Inactive241380
09/30/1983Inactive241580
10/31/1983Inactive241178
11/30/1983Inactive241278
12/31/1983Inactive240478
02/29/1984Inactive241289
03/31/1984Inactive241389
10/31/1984Inactive241189
11/30/1984Inactive241089
12/31/1984Inactive240589
07/31/1998#2641227773
08/31/1998#2669227573
09/30/1998#2696227373
10/31/1998#2293229771
11/30/1998#2660227373
12/31/1998#2667227473
01/11/1999#2472227473
01/18/1999#2477227473
01/25/1999#2480227573
02/01/1999#2181228473
02/08/1999#2185228473
02/15/1999#2192228473
02/22/1999#2204228473
03/01/1999#2116229073
03/08/1999#2122229173
03/15/1999#2125229173
03/22/1999#2128229273
03/29/1999#2132229273
04/05/1999#2136229473
04/12/1999#2136229473
04/19/1999#2143229573
04/26/1999#2150229573
05/03/1999#2191229273
05/10/1999#2195229173
05/17/1999#2193229173
05/24/1999#2201229073
05/31/1999#2215229173
06/07/1999#2223228873
06/14/1999#2227228973
06/21/1999#2230228873
06/28/1999#2238228973
08/02/1999Inactive227083
08/09/1999Inactive227183
08/16/1999Inactive226983
08/23/1999Inactive226983
08/30/1999Inactive226983
09/06/1999Inactive226983
09/13/1999Inactive226883
09/20/1999Inactive226983
09/27/1999Inactive226983
10/04/1999Inactive226783
10/11/1999Inactive226783
10/18/1999Inactive226783
10/25/1999Inactive226783
11/01/1999Inactive229281
11/08/1999Inactive229181
11/15/1999Inactive229281
11/22/1999Inactive229181
11/29/1999Inactive229281
12/06/1999Inactive227083
12/13/1999Inactive227083
12/20/1999Inactive226983
12/27/1999Inactive226983
01/03/2000Inactive227283
01/10/2000Inactive227383
01/17/2000Inactive227383
01/24/2000Inactive227483
01/31/2000Inactive227483
02/07/2000Inactive228483
02/14/2000Inactive228383
02/21/2000Inactive228483
02/28/2000Inactive228583
03/06/2000Inactive229283
03/13/2000Inactive229183
03/20/2000Inactive229183
03/27/2000Inactive229083
04/03/2000Inactive228983
04/10/2000Inactive229083
04/17/2000Inactive229083
04/24/2000Inactive228983
05/01/2000Inactive228983
05/08/2000Inactive228583
05/15/2000Inactive228783
05/22/2000Inactive228683
05/29/2000Inactive228683
06/05/2000Inactive228683
06/12/2000Inactive228483
06/19/2000Inactive228483
06/26/2000Inactive228483
07/03/2000Inactive228483

These ratings, calculated for Press, Grigory, 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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