Chess South Africa Ratings Database

PLAYER PAGE

Personal

Viljoen, JC (Johanna Catherina)

Chess SA id

200044754

FIDE id

Date of birth

2000-07-14 (Adult)

Gender

Female

Region

Gert Sibande (MGS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2018-05-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	972	972	577.8	552.6
Raw rating	972	972	577.8	552.6
Weighted rating	969	969	577.8	552.6
Weighted performance	0	0	0	0
Floor	500	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	229.5	229.5	402.4	417.1
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2018-02-01	1200 2024-02-01
Highest raw rating	972 2024-02-01	972 2024-02-01	577.8 2024-02-01	552.6 2024-02-01
Highest weighted rating	972 2024-11-01	972 2024-11-01	577.8 2024-11-01	552.6 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	972	972	577.8	552.6
Analysis
Rating	972	972	577.8	552.6
Raw rating	972	972	577.8	552.6
Weighted rating	969	969	577.8
Weighted performance	0	0	0
K-factor	40	40	40	40
Floor	500	500	500	500
Max/Min rating change allowed	229.5	229.5	402.4	417.1
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	972	972	577.8	552.6
New weighted rating	971	971	577.8	552.6
New weighted performance	0	0	0	0
Temp new rating	972	972	577.8	552.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	972	972	577.8	552.6
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	159	145	14

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Gert Sibande (MGS)
Province	Mpumalanga (MP)
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	16	5	31.25	-159.4	1034.9	875.6
Standard	11	4	36.36	-115.9	1027.2	911.3
Rapid	5	1	20	-255	1051.9	796.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	972	972	577.8	552.6
2025-09-01	972	972	577.8	552.6
2025-08-01	972	972	577.8	552.6
2025-07-01	972	972	577.8	552.6
2025-06-01	972	972	577.8	552.6
2025-05-01	972	972	577.8	552.6
2025-04-01	972	972	577.8	552.6
2025-03-01	972	972	577.8	552.6
2025-02-01	972	972	577.8	552.6
2025-01-01	972	972	577.8	552.6
2024-12-01	972	972	577.8	552.6
2024-11-01	972	972	577.8	552.6
2024-10-01	972	972	577.8	552.6
2024-09-01	972	972	577.8	552.6
2024-08-01	972	972	577.8	552.6
2024-07-01	972	972	577.8	552.6
2024-06-01	972	972	577.8	552.6
2024-08-01	972	972	577.8	552.6
2024-04-01	972	972	577.8	552.6
2024-03-01	972	972	577.8	552.6
2024-02-01	972	972	577.8	552.6
2024-01-01	972	972	577.8	552.6
2023-12-01	674.4	675.8	577.8	552.6
2023-11-01	674.4	675.8	577.8	552.6

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	Gert Sibande High Schools Chess Trials 2018 (U18 Girls)	2018-05-19	2018-05-19	Rapid	Gert Sibande (MGS)	5	5	1	Yes	Analysis
2	Govan Mbeki Sub-District Trials Secondary School 2018 (U18 Girls)	2018-05-04	2018-05-04	Standard	Gert Sibande (MGS)	5	4	3	Yes	Analysis
3	South African Junior Team Championships 2017 (U18B)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	1	Yes	Analysis

#	Games	Start				End
1	2	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 2	type Standard	result 1	date 2018-05-04	rnd 3	type Standard	result 1
		Opponent Adigun, Z (Zainub)				Opponent Morar, A (Anjali)
2	1	Tournament Gert Sibande High Schools Chess Trials 2018				Tournament Gert Sibande High Schools Chess Trials 2018
		date 2018-05-19	rnd 2	type Rapid	result 1	date 2018-05-19	rnd 2	type Rapid	result 1
		Opponent Khoza, N (Nothando)				Opponent Khoza, N (Nothando)
3	1	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 5	type Standard	result 1	date 2018-05-04	rnd 5	type Standard	result 1
		Opponent Mbonani, OMP (Oddelia)				Opponent Mbonani, OMP (Oddelia)

#	Games	Start				End
1	2	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 2	type Standard	result 1	date 2018-05-04	rnd 3	type Standard	result 1
		Opponent Adigun, Z (Zainub)				Opponent Morar, A (Anjali)
2	1	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 5	type Standard	result 1	date 2018-05-04	rnd 5	type Standard	result 1
		Opponent Mbonani, OMP (Oddelia)				Opponent Mbonani, OMP (Oddelia)
3	1	Tournament South African Junior Team Championships 2017				Tournament South African Junior Team Championships 2017
		date 2018-01-04	rnd 2	type Standard	result 1	date 2018-01-04	rnd 2	type Standard	result 1
		Opponent Van Buynder, B (Bart)				Opponent Van Buynder, B (Bart)

#	Games	Start				End
1	1	Tournament Gert Sibande High Schools Chess Trials 2018				Tournament Gert Sibande High Schools Chess Trials 2018
		date 2018-05-19	rnd 2	type Rapid	result 1	date 2018-05-19	rnd 2	type Rapid	result 1
		Opponent Khoza, N (Nothando)				Opponent Khoza, N (Nothando)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 2	type Standard	result 1	date 2018-05-04	rnd 3	type Standard	result 1
		Opponent Adigun, Z (Zainub)				Opponent Morar, A (Anjali)
2	1	Tournament Gert Sibande High Schools Chess Trials 2018				Tournament Gert Sibande High Schools Chess Trials 2018
		date 2018-05-19	rnd 2	type Rapid	result 1	date 2018-05-19	rnd 2	type Rapid	result 1
		Opponent Khoza, N (Nothando)				Opponent Khoza, N (Nothando)
3	1	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 5	type Standard	result 1	date 2018-05-04	rnd 5	type Standard	result 1
		Opponent Mbonani, OMP (Oddelia)				Opponent Mbonani, OMP (Oddelia)

#	Games	Start				End
1	2	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 2	type Standard	result 1	date 2018-05-04	rnd 3	type Standard	result 1
		Opponent Adigun, Z (Zainub)				Opponent Morar, A (Anjali)
2	1	Tournament Govan Mbeki Sub-District Trials Secondary School 2018				Tournament Govan Mbeki Sub-District Trials Secondary School 2018
		date 2018-05-04	rnd 5	type Standard	result 1	date 2018-05-04	rnd 5	type Standard	result 1
		Opponent Mbonani, OMP (Oddelia)				Opponent Mbonani, OMP (Oddelia)
3	1	Tournament South African Junior Team Championships 2017				Tournament South African Junior Team Championships 2017
		date 2018-01-04	rnd 2	type Standard	result 1	date 2018-01-04	rnd 2	type Standard	result 1
		Opponent Van Buynder, B (Bart)				Opponent Van Buynder, B (Bart)

#	Games	Start				End
1	1	Tournament Gert Sibande High Schools Chess Trials 2018				Tournament Gert Sibande High Schools Chess Trials 2018
		date 2018-05-19	rnd 2	type Rapid	result 1	date 2018-05-19	rnd 2	type Rapid	result 1
		Opponent Khoza, N (Nothando)				Opponent Khoza, N (Nothando)

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	Botha ,V (Veronica)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Botha ,V (Veronica)	2	911.6	486.6	1	911.6	486.6	1	911.6	486.6	0	0	0
2	Varghese ,K (Kevin)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Varghese ,K (Kevin)	1	877	452	1	877	452	0	0	0	0	0	0
3	Adigun ,Z (Zainub)	1	1	425	1	1	425	0	0	0	0	0	0
3	Adigun ,Z (Zainub)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Mbonani ,OMP (Oddelia)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mbonani ,OMP (Oddelia)	1	1000	1425	1	1000	1425	0	0	0	0	0	0
5	Van Buynder ,B (Bart)	1	1	425	1	1	425	0	0	0	0	0	0
5	Van Buynder ,B (Bart)	1	914.6	1339.6	1	914.6	1339.6	0	0	0	0	0	0
6	Van Jaarsveld ,L (Lihann)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Van Jaarsveld ,L (Lihann)	1	1193.8	768.8	1	1193.8	768.8	0	0	0	0	0	0
7	Dinham ,M (Megan)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Dinham ,M (Megan)	1	1319.3	894.3	1	1319.3	894.3	0	0	0	0	0	0
8	Freeks ,K (Karl)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Freeks ,K (Karl)	1	1378.6	953.6	1	1378.6	953.6	0	0	0	0	0	0
9	Mogomotsi ,K (Kganya)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mogomotsi ,K (Kganya)	1	845.6	420.6	1	845.6	420.6	0	0	0	0	0	0
10	Morar ,A (Anjali)	1	1	425	1	1	425	0	0	0	0	0	0
10	Morar ,A (Anjali)	1	692.6	1117.6	1	692.6	1117.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

Viljoen, JC (Johanna Catherina)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms