Chess South Africa Ratings Database

PLAYER PAGE

Personal

Oosthuizen, M (Melinda)

Chess SA id

299055839

FIDE id

Date of birth

1999-09-23 (Adult)

Gender

Female

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2018-05-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	826.9	828.9	739	712.2
Raw rating	826.9	828.9	739	712.2
Weighted rating	826.9	828.9	738.7	712.2
Weighted performance	58.6	58.7	0	0
Floor	500	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	282.2	281.3	319.8	332.2
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	826.9 2024-02-01	828.9 2024-02-01	739 2024-02-01	712.2 2024-02-01
Highest weighted rating	826.9 2024-11-01	828.9 2024-11-01	739 2024-11-01	712.2 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	826.9	828.9	739	712.2
Analysis
Rating	826.9	828.9	739	712.2
Raw rating	826.9	828.9	739	712.2
Weighted rating	826.9	828.9	738.7
Weighted performance	58.6	58.7	0
K-factor	40	40	40	40
Floor	500	500	500	500
Max/Min rating change allowed	282.2	281.3	319.8	332.2
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	826.9	828.9	739	712.2
New weighted rating	826.9	828.9	738.9	712.2
New weighted performance	58.3	58.4	0	0
Temp new rating	826.9	828.9	739	712.2
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	826.9	828.9	739	712.2
New K-factor	40	40	40	40
New floor	500	500	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	125	98	27

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult 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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	27	7.5	27.78	-188.9	996.2	807.3
Standard	27	7.5	27.78	-188.9	996.2	807.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	826.9	828.9	739	712.2
2025-09-01	826.9	828.9	739	712.2
2025-08-01	826.9	828.9	739	712.2
2025-07-01	826.9	828.9	739	712.2
2025-06-01	826.9	828.9	739	712.2
2025-05-01	826.9	828.9	739	712.2
2025-04-01	826.9	828.9	739	712.2
2025-03-01	826.9	828.9	739	712.2
2025-02-01	826.9	828.9	739	712.2
2025-01-01	826.9	828.9	739	712.2
2024-12-01	826.9	828.9	739	712.2
2024-11-01	826.9	828.9	739	712.2
2024-10-01	826.9	828.9	739	712.2
2024-09-01	826.9	828.9	739	712.2
2024-08-01	826.9	828.9	739	712.2
2024-07-01	826.9	828.9	739	712.2
2024-06-01	826.9	828.9	739	712.2
2024-08-01	826.9	828.9	739	712.2
2024-04-01	826.9	828.9	739	712.2
2024-03-01	826.9	828.9	739	712.2
2024-02-01	826.9	828.9	739	712.2
2024-01-01	826.9	828.9	739	712.2
2023-12-01	826.9	828.9	712.2	712.2
2023-11-01	826.9	828.9	712.2	712.2

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	EDENSC Closed 3 2018 (U20 Open)	2018-05-12	2018-05-12	Standard	Eden (WEG)	5	5	1.5	Yes	Analysis
2	Western Cape Schools Individuals 2018 (U18 Girls)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	2.5	Yes	Analysis
3	EDENSC Closed 2 2018 (U20 Open)	2018-04-14	2018-04-14	Standard	Eden (WEG)	5	4	0.5	Yes	Analysis
4	EDENSC Closed 1 2018 (U20)	2018-03-10	2018-03-10	Standard	Eden (WEG)	5	5	2	Yes	Analysis
5	South African Junior Team Championships 2017 (U20B)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	1	Yes	Analysis

#	Games	Start				End
1	2	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 2	type Standard	result 0.5	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Pietersen, G (Genevieve)				Opponent Orange, C (Caitlin)
2	1	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-20	rnd 5	type Standard	result 1	date 2018-05-20	rnd 5	type Standard	result 1
		Opponent Klasse, B (Barrunique)				Opponent Klasse, B (Barrunique)
3	1	Tournament EDENSC Closed 3 2018				Tournament EDENSC Closed 3 2018
		date 2018-05-12	rnd 4	type Standard	result 0.5	date 2018-05-12	rnd 4	type Standard	result 0.5
		Opponent Plaatjies, S (Shaamilah)				Opponent Plaatjies, S (Shaamilah)

#	Games	Start				End
1	2	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 2	type Standard	result 0.5	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Pietersen, G (Genevieve)				Opponent Orange, C (Caitlin)
2	1	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-20	rnd 5	type Standard	result 1	date 2018-05-20	rnd 5	type Standard	result 1
		Opponent Klasse, B (Barrunique)				Opponent Klasse, B (Barrunique)
3	1	Tournament EDENSC Closed 3 2018				Tournament EDENSC Closed 3 2018
		date 2018-05-12	rnd 4	type Standard	result 0.5	date 2018-05-12	rnd 4	type Standard	result 0.5
		Opponent Plaatjies, S (Shaamilah)				Opponent Plaatjies, S (Shaamilah)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-20	rnd 5	type Standard	result 1	date 2018-05-20	rnd 5	type Standard	result 1
		Opponent Klasse, B (Barrunique)				Opponent Klasse, B (Barrunique)
2	1	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 3	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Orange, C (Caitlin)				Opponent Orange, C (Caitlin)
3	1	Tournament EDENSC Closed 3 2018				Tournament EDENSC Closed 3 2018
		date 2018-05-12	rnd 1	type Standard	result 1	date 2018-05-12	rnd 1	type Standard	result 1
		Opponent Witbooi, J (Jo-Wayne)				Opponent Witbooi, J (Jo-Wayne)

#	Games	Start				End
1	1	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-20	rnd 5	type Standard	result 1	date 2018-05-20	rnd 5	type Standard	result 1
		Opponent Klasse, B (Barrunique)				Opponent Klasse, B (Barrunique)
2	1	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 3	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Orange, C (Caitlin)				Opponent Orange, C (Caitlin)
3	1	Tournament EDENSC Closed 3 2018				Tournament EDENSC Closed 3 2018
		date 2018-05-12	rnd 1	type Standard	result 1	date 2018-05-12	rnd 1	type Standard	result 1
		Opponent Witbooi, J (Jo-Wayne)				Opponent Witbooi, J (Jo-Wayne)

No games found.

#	Games	Start				End

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	Huisamen ,M (Mario)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Huisamen ,M (Mario)	2	1164.5	739.5	2	1156.8	739.5	0	0	0	0	0	0
2	Plaatjies ,S (Shaamilah)	2	1	0	2	1	0	0	0	0	0	0	0
2	Plaatjies ,S (Shaamilah)	2	726.6	726.6	2	739.4	726.6	0	0	0	0	0	0
3	Witbooi ,J (Jo-Wayne)	2	1	0	2	1	0	0	0	0	0	0	0
3	Witbooi ,J (Jo-Wayne)	2	987	987	2	984.8	987	0	0	0	0	0	0
4	Gandhi ,E (Eleesh)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Gandhi ,E (Eleesh)	2	1027	602	2	1032.1	602	0	0	0	0	0	0
5	Adams ,D (Delbert)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Adams ,D (Delbert)	1	1004	579	1	1007.1	579	0	0	0	0	0	0
6	Mataboge ,T (Thabang)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Mataboge ,T (Thabang)	1	545.2	120.2	1	545.2	120.2	0	0	0	0	0	0
7	Mbekeni ,S (Sine)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Mbekeni ,S (Sine)	1	1208	783	1	1210.4	783	0	0	0	0	0	0
8	Esterhuysen ,A (Andre)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Esterhuysen ,A (Andre)	1	812	387	1	812	387	0	0	0	0	0	0
9	Van Der Ross ,M (Marcque)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Van Der Ross ,M (Marcque)	1	851.9	426.9	1	868.4	426.9	0	0	0	0	0	0
10	Reilly ,T (Toine)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Reilly ,T (Toine)	1	747.5	322.5	1	747.5	322.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

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PLAYER PAGE

Personal

Oosthuizen, M (Melinda)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms