Player Page

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
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 rating1044.3
Curent Weighted rating1060.7
Curent Weighted performance780.1
Current official/published rating (highest between Raw, WR and WP)1060.7
Current floor (min rating allowed)648.9
Current highest rating achieved1148.9
Current K-factor40
Games played this month0
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 rating1044.3
Projected new Weighed rating1058.0
Projected new Weighted performance780.1
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 rating1148.9
Projected new floor648.9
Projected new K-facor40
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 rating1019.6
Curent Weighted rating1037.4
Curent Weighted performance770.1
Current official/published rating (highest between Raw, WR and WP)1037.4
Current floor (min rating allowed)638.4
Current highest rating achieved1138.4
Current K-factor40
Games played this month0
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 rating1019.6
Projected new Weighed rating1034.5
Projected new Weighted performance770.1
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 rating1138.4
Projected new floor638.4
Projected new K-facor40
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 rating1200.0
Curent Weighted rating1200.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1200.0
Current floor (min rating allowed)700.0
Current highest rating achieved1200.0
Current K-factor36
Games played this month0
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 rating1200.0
Projected new Weighed rating1200.0
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 rating1200.0
Projected new floor700.0
Projected new K-facor36
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 rating1200.0
Curent Weighted rating1200.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1200.0
Current floor (min rating allowed)700.0
Current highest rating achieved1200.0
Current K-factor36
Games played this month0
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 rating1200.0
Projected new Weighed rating1200.0
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 rating1200.0
Projected new floor700.0
Projected new K-facor36
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
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
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 idNameGamesScoreWinsDrawsLosses%AorDpPerformView
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