Chess South Africa
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Chess South Africa
Duwarka, IJ (Ishka Jo-Anne)
Dob:
2005/07/30 (U20)
Gender:
Female
Chess SA id:
2050118293
FIDE id:
Region:
Ekurhuleni (GE)
Citizen:
RSA
Title(s):
Last active:
2023/08/19 (272 days ago)
Ratings
The
Projected values
below are
NOT
the actual and official values as calculated by the Ratings Bureau.
Main
Standard
Rapid
Blitz
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1044.3
Curent Weighted rating
1060.7
Curent Weighted performance
780.1
Current official/published rating (highest between Raw, WR and WP)
1060.7
Current floor (min rating allowed)
648.9
Current highest rating achieved
1148.9
Current K-factor
40
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±207.0
Current Raw change used (final)
0.0
Projected new Raw rating
1044.3
Projected new Weighed rating
1058.0
Projected new Weighted performance
780.1
Projected new official/published rating (highest between new Raw, new WR and new WP)
1058.0
Projected effective change (new Official - current Official)
-2.6
Projected new highest rating
1148.9
Projected new floor
648.9
Projected new K-facor
40
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1019.6
Curent Weighted rating
1037.4
Curent Weighted performance
770.1
Current official/published rating (highest between Raw, WR and WP)
1037.4
Current floor (min rating allowed)
638.4
Current highest rating achieved
1138.4
Current K-factor
40
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±214.4
Current Raw change used (final)
0.0
Projected new Raw rating
1019.6
Projected new Weighed rating
1034.5
Projected new Weighted performance
770.1
Projected new official/published rating (highest between new Raw, new WR and new WP)
1034.5
Projected effective change (new Official - current Official)
-2.9
Projected new highest rating
1138.4
Projected new floor
638.4
Projected new K-facor
40
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1200.0
Curent Weighted rating
1200.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current floor (min rating allowed)
700.0
Current highest rating achieved
1200.0
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±165.8
Current Raw change used (final)
0.0
Projected new Raw rating
1200.0
Projected new Weighed rating
1200.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1200.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1200.0
Projected new floor
700.0
Projected new K-facor
36
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1200.0
Curent Weighted rating
1200.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current floor (min rating allowed)
700.0
Current highest rating achieved
1200.0
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±165.8
Current Raw change used (final)
0.0
Projected new Raw rating
1200.0
Projected new Weighed rating
1200.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1200.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1200.0
Projected new floor
700.0
Projected new K-facor
36
Tournaments
History
Did not participate this month.
Did not participate this year.
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
6
2023 Gauteng Top Schools (U19 Girls)
2023/08/19
2023/08/19
West Rand (GWR)
Standard
60
0.83
5
5
2.0
1032.7
998.0
Analysis
5
Ekurhuleni North High Schools Girls District Team Finals 2023 (U18)
2023/07/22
2023/07/22
Ekurhuleni (GE)
Standard
60
0.83
6
4
0.0
1098.4
1079.6
Analysis
4
Ekurhuleni North Schools Individual Finals 2023 (U18 Girls)
2023/05/13
2023/05/13
Ekurhuleni (GE)
Standard
60
0.83
5
0
0.0
1098.4
1079.6
Analysis
3
2022 Gauteng Schools Team Championships (U19 Girls)
2022/08/26
2022/08/26
Tshwane (GTP)
Standard
60
0.83
5
5
0.5
1148.9
1138.4
Analysis
2
Ekurhuleni-North Schools Teams 2022 (U18 Girls)
2022/08/20
2022/08/20
Ekurhuleni (GE)
Standard
60
0.83
5
4
2.0
1148.9
1138.4
Analysis
1
2019 Gauteng School League Finals (U15 Girls)
2019/08/24
2019/08/24
Tshwane (GTP)
Standard
60
0.83
5
5
1.0
1200.0
1200.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Standard
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Rapid
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Blitz
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
23
5
1
17
5.5
23.9
-221.7
1177.1
955.3
White
12
2
0
10
2.0
16.7
-283.3
1187.9
904.5
Black
11
3
1
7
3.5
31.8
-154.5
1165.3
1010.8
Standard
All
23
5
1
17
5.5
23.9
-221.7
1177.1
955.3
White
12
2
0
10
2.0
16.7
-283.3
1187.9
904.5
Black
11
3
1
7
3.5
31.8
-154.5
1165.3
1010.8
Rapid
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Blitz
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
2080153968
Colyn, D (Daniela)
2
0.0
0
0
2
0.0
1098.4
-425.0
673.4
View list
2
2080106510
De Lange, C (Charend)
2
0.0
0
0
2
0.0
1098.4
-425.0
673.4
View list
3
2060118283
Mabena, T (Thembekile)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
4
2050145502
Mapule, M (Miya)
1
1.0
1
0
0
100.0
1148.9
425.0
1573.9
View list
5
2050161176
Mamarenga, M (Mahlodi)
1
1.0
1
0
0
100.0
1032.7
425.0
1457.7
View list
6
2070145504
Mucache, L (Lira)
1
1.0
1
0
0
100.0
1148.9
425.0
1573.9
View list
7
2090157455
Pikini, E (Esona Oyama)
1
1.0
1
0
0
100.0
1032.7
425.0
1457.7
View list
8
2070146106
Van Der Merwe, S (Simone)
1
0.5
0
1
0
50.0
1148.9
0.0
1148.9
View list
9
2070115099
Tibana, R (Rachael)
1
0.0
0
0
1
0.0
1032.7
-425.0
607.7
View list
10
206082561
Thusi, B (Bongi)
1
0.0
0
0
1
0.0
1148.9
-425.0
723.9
View list
11
205031170
Prinsloo, TE (Thiana)
1
0.0
0
0
1
0.0
1148.9
-425.0
723.9
View list
12
207071082
Nkuna, B (Bongile)
1
0.0
0
0
1
0.0
1148.9
-425.0
723.9
View list
13
204070761
Ndlovu, A (Angel)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
14
2070140159
Moila, K (Kamogelo Ntombi)
1
0.0
0
0
1
0.0
1032.7
-425.0
607.7
View list
15
2050146093
Maseko, O (Onthatile)
1
0.0
0
0
1
0.0
1148.9
-425.0
723.9
View list
16
2090146089
Mahlangu, B (Belinda)
1
0.0
0
0
1
0.0
1148.9
-425.0
723.9
View list
17
2070146088
Maheto, B (Bokang)
1
0.0
0
0
1
0.0
1148.9
-425.0
723.9
View list
18
2050117220
Mackay, Z (Ziya)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
19
2040105872
Kutsoma, M (Mercy)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
20
2060118296
Gboriaga, P (Precious)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list