Chess South Africa Ratings Database

PLAYER PAGE

Personal

Duminy, Z (Zaldine)

Chess SA id

2080138409

FIDE id

Date of birth

2008-06-12 (U18)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-04-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

903.2

Item	Main	Standard	Rapid	Blitz
Rating	1021.7	958.8	1124.2	1200
Raw rating	1021.7	958.8	1124.2	1200
Weighted rating	1021.1	957.7	1123.4	1200
Weighted performance	836.8	774.3	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	213.8	233.8	184.7	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1021.7	958.8	1124.2	1200
Analysis
Rating	1021.7	958.8	1124.2	1200
Raw rating	1021.7	958.8	1124.2	1200
Weighted rating	1021.1	957.7	1123.4
Weighted performance	836.8	774.3	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	213.8	233.8	184.7	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1021.7	958.8	1124.2	1200
New weighted rating	1021	957.6	1123.4	1200
New weighted performance	836.5	774	0	0
Temp new rating	1021.7	958.8	1124.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1021.7	958.8	1124.2	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	15	9	6
	13	8	5
	17	7	10
	14	14	0
	0	0	0
History	59	38	21

Games since
	Main 28	Standard 17		Rapid 11		Blitz 0
Gender	Female
Age group	U18
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	15	3.5	23.33	-226.7	1186.9	960.3
Standard	9	1	11.11	-330.6	1200.4	869.9
Rapid	6	2.5	41.67	-70.8	1166.7	1095.9
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	59	15	25.42	-208.9	1188.4	979.5
Standard	38	6.5	17.11	-279.6	1171	891.4
Rapid	21	8.5	40.48	-81	1219.9	1139
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1021.7	958.8	1124.2	1200
2025-09-01	1021.7	958.8	1124.2	1200
2025-08-01	1021.7	958.8	1124.2	1200
2025-07-01	1021.7	958.8	1124.2	1200
2025-06-01	1021.7	958.8	1124.2	1200
2025-05-01	1019.6	957	1124.2	1200
2025-04-01	1023.1	960.1	1124.2	1200
2025-03-01	1033.8	961.8	1124.2	1200
2025-02-01	1022.8	961.5	1124.3	1200
2025-01-01	1009	944.8	1121.2	1200
2024-12-01	1009	944.8	1121.2	1200
2024-11-01	1009	944.8	1121.2	1200
2024-10-01	1009	944.8	1121.2	1200
2024-09-01	1009	944.8	1121.2	1200
2024-08-01	1009	944.8	1121.2	1200
2024-07-01	1036.2	974	1121.2	1200
2024-06-01	1036.2	974	1121.2	1200
2024-08-01	1036.2	974	1121.2	1200
2024-04-01	1036.2	974	1121.2	1200
2024-03-01	1037.2	971.6	1121.2	1200
2024-02-01	1027.6	971.6	1133.2	1200
2024-01-01	1027.6	971.6	1133.2	1200
2023-12-01	1027.6	971.6	1133.2	1200
2023-11-01	1027.6	971.6	1133.2	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools Individual Championship 2025 (U17 Girls)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	5	0	Yes	Analysis
2	Overberg Schools - HS Closed 2025 (U17 Girls)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
3	Overberg Schools - HS Trials 2025 (U17 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools Individual Championship 2025 (U17 Girls)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	5	0	Yes	Analysis
2	Overberg Schools - HS Closed 2025 (U17 Girls)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
3	Overberg Schools - HS Trials 2025 (U17 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	2.5	Yes	Analysis
4	Overberg Schools - Top Schools 2024 (U18 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	4	0.5	Yes	Analysis
5	Western Cape Inter Region Cup 2024 (U20 Girls)	2024-03-23	2024-03-24	Standard	Overberg (WOS)	5	0	0	No	Analysis
6	Overberg High Schools Trails 2024 (U18 Girls)	2024-03-02	2024-03-02	Standard	Overberg (WOS)	5	4	1.5	Yes	Analysis
7	Overberg High Schools Trails 2024 (U18)	2024-02-24	2024-02-24	Rapid	Overberg (WOS)	5	5	2	Yes	Analysis
8	Overberg Top Schools 2023 (U15+U18)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	2	0	Yes	Analysis
9	Overberg High School Closed 2023 (U15 Girls)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	2	Yes	Analysis
10	Overberg High Schools Trails 2023 (U15)	2023-02-24	2023-02-24	Rapid	Overberg (WOS)	5	5	2	Yes	Analysis
11	Overberg Schools Open Tournament 2023 (U16)	2023-02-11	2023-02-11	Rapid	Overberg (WOS)	5	5	2	Yes	Analysis
12	Overberg Topskole 2022 (O18)	2022-08-30	2022-08-30	Standard	Overberg (WOS)	5	3	0	Yes	Analysis
13	Western Cape Schools Chess 2022 (U15 Girls)	2022-05-07	2022-05-08	Standard	Eden (WEG)	6	6	0.5	Yes	Analysis
14	Overberg 2022 (U15 Girls)	2022-03-05	2022-03-05	Standard	Overberg (WOS)	5	5	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament Overberg High Schools Trails 2023				Tournament Overberg High Schools Trails 2023
		date 2023-02-24	rnd 2	type Rapid	result 1	date 2023-02-24	rnd 4	type Rapid	result 0.5
		Opponent Mnganisa, O (Ongama)				Opponent De Kock, S (Sebastian)
2	2	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 5	type Rapid	result 0.5	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Maibee, V (Vinette)				Opponent Mushohwe, L (Lee Ann)
3	2	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 0.5
		Opponent Mills, A (Alexandra)				Opponent Mdlokovane, S (Sphendulwe)

#	Games	Start				End
1	2	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 0.5
		Opponent Mills, A (Alexandra)				Opponent Mdlokovane, S (Sphendulwe)
2	2	Tournament Overberg High School Closed 2023				Tournament Overberg High School Closed 2023
		date 2023-03-25	rnd 2	type Standard	result 1	date 2023-03-25	rnd 3	type Standard	result 1
		Opponent Klaassen, K (Kayden)				Opponent Dickson, Z (Zoe)
3	1	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 5	type Standard	result 1	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Maibe, V (Vinnete)				Opponent Maibe, V (Vinnete)

#	Games	Start				End
1	3	Tournament Overberg High Schools Trails 2023				Tournament Overberg High Schools Trails 2023
		date 2023-02-24	rnd 2	type Rapid	result 1	date 2023-02-24	rnd 4	type Rapid	result 0.5
		Opponent Mnganisa, O (Ongama)				Opponent De Kock, S (Sebastian)
2	2	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 5	type Rapid	result 0.5	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Maibee, V (Vinette)				Opponent Mushohwe, L (Lee Ann)
3	1	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 2	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Van Rooyen, J (Janel)				Opponent Van Rooyen, J (Janel)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Overberg High School Closed 2023				Tournament Overberg High School Closed 2023
		date 2023-03-25	rnd 2	type Standard	result 1	date 2023-03-25	rnd 3	type Standard	result 1
		Opponent Klaassen, K (Kayden)				Opponent Dickson, Z (Zoe)
2	1	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 5	type Standard	result 1	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Maibe, V (Vinnete)				Opponent Maibe, V (Vinnete)
3	1	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Mushohwe, L (Lee Ann)				Opponent Mushohwe, L (Lee Ann)

#	Games	Start				End
1	2	Tournament Overberg High School Closed 2023				Tournament Overberg High School Closed 2023
		date 2023-03-25	rnd 2	type Standard	result 1	date 2023-03-25	rnd 3	type Standard	result 1
		Opponent Klaassen, K (Kayden)				Opponent Dickson, Z (Zoe)
2	1	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 5	type Standard	result 1	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Maibe, V (Vinnete)				Opponent Maibe, V (Vinnete)
3	1	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-02	rnd 3	type Standard	result 1
		Opponent Mills, A (Alexandra)				Opponent Mills, A (Alexandra)

#	Games	Start				End
1	1	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Mushohwe, L (Lee Ann)				Opponent Mushohwe, L (Lee Ann)
2	1	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 2	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Van Rooyen, J (Janel)				Opponent Van Rooyen, J (Janel)
3	1	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-02-24	rnd 5	type Rapid	result 1	date 2024-02-24	rnd 5	type Rapid	result 1
		Opponent Pietersen, B (Beverly)				Opponent Pietersen, B (Beverly)

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Mackenzie ,E (Erin-Lee)	6	0	-425	5	0	-425	1	0	-425	0	0	0
1	Mackenzie ,E (Erin-Lee)	6	1177.4	752.4	5	1084.9	752.4	1	1301.3	752.4	0	0	0
2	Mdlokovane ,S (Sphendulwe)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
2	Mdlokovane ,S (Sphendulwe)	3	1216.4	933.1	3	1164.6	933.1	0	0	0	0	0	0
3	Maibe ,V (Vinnete)	2	1.5	212.5	1	1	425	1	0.5	0	0	0	0
3	Maibe ,V (Vinnete)	2	1198.4	1410.9	1	1200	1623.4	1	1200	1198.4	0	0	0
4	Beveridge ,TG (Talitha Grace)	2	0	-425	0	0	0	2	0	-425	0	0	0
4	Beveridge ,TG (Talitha Grace)	2	1370.1	945.1	0	0	0	2	989.9	945.1	0	0	0
5	Mnganisa ,O (Ongama)	2	2	425	0	0	0	2	2	425	0	0	0
5	Mnganisa ,O (Ongama)	2	1200	1625	0	0	0	2	1200	1625	0	0	0
6	Bucchianeri ,J (Jodi)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Bucchianeri ,J (Jodi)	1	1292.6	867.6	1	1235	867.6	0	0	0	0	0	0
7	Dickson ,Z (Zoe)	1	1	425	1	1	425	0	0	0	0	0	0
7	Dickson ,Z (Zoe)	1	1192.8	1617.8	1	1200	1617.8	0	0	0	0	0	0
8	Oosthuizen ,A (Anke)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Oosthuizen ,A (Anke)	1	1315.8	890.8	1	1243.7	890.8	0	0	0	0	0	0
9	Vallentyn ,C (Cliniece)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Vallentyn ,C (Cliniece)	1	1250.3	825.3	1	1254.3	825.3	0	0	0	0	0	0
10	Van Wyk ,L (Loreal)	1	1	425	1	1	425	0	0	0	0	0	0
10	Van Wyk ,L (Loreal)	1	1039.3	1464.3	1	1008	1464.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Duminy, Z (Zaldine)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms