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Career ratings for: Krupkova, Petra

  Date of rating  

World Rank Rating +/- Age
01/31/1992#1590230975
02/29/1992#1615230575
03/31/1992#1696229575
04/30/1992#1705229475
05/31/1992#1697229675
06/30/1992#1747229275
07/31/1992#1711229969
08/31/1992#1735230169
09/30/1992#1704230669
10/31/1992#1720230669
11/30/1992#1716230469
12/31/1992#1712230869
01/31/1993#1507233167
02/28/1993#1553232767
03/31/1993#1642231767
04/30/1993#1636232067
05/31/1993#1610232367
06/30/1993#1618232167
07/31/1993#1781230369
08/31/1993#1738231167
09/30/1993#1707231567
10/31/1993#1734231467
11/30/1993#1746231567
12/31/1993#1762231567
01/31/1994#1602233369
02/28/1994#1677232969
03/31/1994#1768231969
04/30/1994#1731232169
05/31/1994#1687232869
06/30/1994#1707232569
07/31/1994#1795231869
08/31/1994#1941230972
09/30/1994#1917231272
10/31/1994#1933230872
11/30/1994#1942231272
12/31/1994#1950231072
01/31/1995#1683233271
02/28/1995#1755232771
03/31/1995#1853231871
04/30/1995#1820232271
05/31/1995#1775232571
06/30/1995#1924231369
07/31/1995#1967231171
08/31/1995#2075230572
09/30/1995#1850232467
10/31/1995#1857232567
11/30/1995#1812232866
12/31/1995#1819232966
01/31/1996#1319237859
02/29/1996#1385237359
03/31/1996#1462236559
04/30/1996#1430236759
05/31/1996#1392236959
06/30/1996#1536235459
07/31/1996#1550235159
08/31/1996#1741233859
09/30/1996#1733233958
10/31/1996#1742233958
11/30/1996#1751233757
12/31/1996#1734234157
01/31/1997#1517235858
02/28/1997#1572235458
03/31/1997#1657234758
04/30/1997#1627235058
05/31/1997#1606235058
06/30/1997#1728234158
07/31/1997#1889232757
08/31/1997#2222230556
09/30/1997#2128231057
10/31/1997#2065231656
11/30/1997#1920232356
12/31/1997#1892232456
01/31/1998#1662233956
02/28/1998#1698233756
03/31/1998#1755233456
04/30/1998#1737233756
05/31/1998#1729233856
06/30/1998#1821233156
07/31/1998#1907232556
08/31/1998#2070231256
09/30/1998#2017231556
10/31/1998#2067231356
11/30/1998#1896232357
12/31/1998#1895232357
01/11/1999#1755232457
01/18/1999#1755232457
01/25/1999#1757232457
02/01/1999#1541233459
02/08/1999#1548233559
02/15/1999#1552233459
02/22/1999#1559233559
03/01/1999#1597233159
03/08/1999#1602233259
03/15/1999#1601233159
03/22/1999#1600233359
03/29/1999#1601233359
04/05/1999#1680233159
04/12/1999#1680233159
04/19/1999#1683233159
04/26/1999#1689233159
05/03/1999#1676233359
05/10/1999#1675233259
05/17/1999#1678233259
05/24/1999#1691233059
05/31/1999#1700233059
06/07/1999#1692233059
06/14/1999#1799232157
06/21/1999#1805232057
06/28/1999#1804232157
07/05/1999#1856231757
07/12/1999#1858231857
07/19/1999#1856231957
07/26/1999#1862231957
08/02/1999#1910231457
08/09/1999#1914231557
08/16/1999#1920231257
08/23/1999#1928231457
08/30/1999#1933231357
09/06/1999#2074230357
09/13/1999#2075230257
09/20/1999#2081230357
09/27/1999#2092230357
10/04/1999#1994230758
10/11/1999#2000230758
10/18/1999#2019230758
10/25/1999#2018230858
11/01/1999#2013230559
11/08/1999#2016230559
11/15/1999#2025230559
11/22/1999#2032230559
11/29/1999#2039230659
12/06/1999#1891231460
12/13/1999#1913231459
12/20/1999#1932231258
12/27/1999#1935231358
01/03/2000#1927231458
01/10/2000#1926231558
01/17/2000#1934231658
01/24/2000#1934231658
01/31/2000#1940231758
02/07/2000#1731232659
02/14/2000#1730232659
02/21/2000#1738232759
02/28/2000#1742232859
03/06/2000#1767232459
03/13/2000#1768232359
03/20/2000#1763232459
03/27/2000#1769232259
04/03/2000#1767232159
04/10/2000#1816231759
04/17/2000#1825231759
04/24/2000#1836231659
05/01/2000#1837231759
05/08/2000#1845231559
05/15/2000#1848231659
05/22/2000#1851231559
05/29/2000#1857231559
06/05/2000#1857231559
06/12/2000#1944230558
06/19/2000#1948230859
06/26/2000#1948230759
07/03/2000#1956230859
07/10/2000#1999230459
07/17/2000#2002230459
07/24/2000#2012230459
07/31/2000#2014230459
08/07/2000#2068229859
08/14/2000#2071229959
08/21/2000#2078229859
08/28/2000#2076229959
09/04/2000#2073229859
09/11/2000#2190229159
09/18/2000#2189229159
09/25/2000#2198229259
10/02/2000#2199229059
10/09/2000#2127229360
10/16/2000#2130229160
10/23/2000#2136229160
10/30/2000#2124229261
11/06/2000#2107229061
11/13/2000#2125229061
11/20/2000#2153229361
11/27/2000#2151229361
12/04/2000#2156229561
12/11/2000#2009230462
12/18/2000#2009230662
12/25/2000#2009230763
01/01/2001#2020230763
01/08/2001#2023230763
01/15/2001#2028230763
01/22/2001#2033230763
01/29/2001#1984231161
02/05/2001#1965231161
02/12/2001#1817232063
02/19/2001#1818232063
02/26/2001#1816231963
03/05/2001#1815231963
03/12/2001#1835231663
03/19/2001#1838231563
03/26/2001#1844231663
04/02/2001#1841231563
04/09/2001#1843231563
04/16/2001#1880231163
04/23/2001#1882231063
04/30/2001#1901230963
05/07/2001#2173228861
05/14/2001#2398226959
05/21/2001#2400226859
05/28/2001#2402226759
06/04/2001#2400226759
06/11/2001#2388226959
06/18/2001#2383227060
06/25/2001#2384227061
07/02/2001#2381227161
07/09/2001#2381227061
07/16/2001#2428226761
07/23/2001#2434226661
07/30/2001#2490226260
08/06/2001#2507226360
08/13/2001#2553225860
08/20/2001#2566225960
08/27/2001#2598225860
09/03/2001#2611225960
09/10/2001#2640225960

These ratings, calculated for Krupkova, Petra, 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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