Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jonas, O (Ongezwa)

Chess SA id

298092464

FIDE id

Date of birth

1998-06-23 (Adult)

Gender

Female

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-03-21

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1075.6	1093.6	1098.4	1200
Raw rating	1075.6	1093.6	1098.4	1200
Weighted rating	1075.5	1093.6	1098.4	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	198	193	191.6	165.8
Highest rating	1200 2018-01-01	1200 2018-01-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-01-01	1200 2018-01-01	1200 2019-12-01	1200 2024-02-01
Highest weighted rating	1200 2018-01-01	1200 2018-01-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-01-01	1200 2018-01-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1075.6	1093.6	1098.4	1200
Analysis
Rating	1075.6	1093.6	1098.4	1200
Raw rating	1075.6	1093.6	1098.4	1200
Weighted rating	1075.5	1093.6	1098.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	198	193	191.6	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	1075.6	1093.6	1098.4	1200
New weighted rating	1075.6	1093.6	1098.4	1200
New weighted performance	0	0	0	0
Temp new rating	1075.6	1093.6	1098.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1075.6	1093.6	1098.4	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	5	0	5
	0	0	0
History	32	27	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
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	23	6	26.09	-203.3	1150.1	946.9
Standard	18	6	33.33	-141.7	1134.2	992.5
Rapid	5	0	0	-425	1207.5	782.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1075.6	1093.6	1098.4	1200
2025-09-01	1075.6	1093.6	1098.4	1200
2025-08-01	1075.6	1093.6	1098.4	1200
2025-07-01	1075.6	1093.6	1098.4	1200
2025-06-01	1075.6	1093.6	1098.4	1200
2025-05-01	1075.6	1093.6	1098.4	1200
2025-04-01	1075.6	1093.6	1098.4	1200
2025-03-01	1075.6	1093.6	1098.4	1200
2025-02-01	1075.6	1093.6	1098.4	1200
2025-01-01	1075.6	1093.6	1098.4	1200
2024-12-01	1075.6	1093.6	1098.4	1200
2024-11-01	1075.6	1093.6	1098.4	1200
2024-10-01	1075.6	1093.6	1098.4	1200
2024-09-01	1075.6	1093.6	1098.4	1200
2024-08-01	1075.6	1093.6	1098.4	1200
2024-07-01	1075.6	1093.6	1098.4	1200
2024-06-01	1075.6	1093.6	1098.4	1200
2024-08-01	1075.6	1093.6	1098.4	1200
2024-04-01	1075.6	1093.6	1098.4	1200
2024-03-01	1075.6	1093.6	1098.4	1200
2024-02-01	1075.6	1093.6	1098.4	1200
2024-01-01	1075.6	1093.6	1098.4	1200
2023-12-01	1067.8	1093.6	1098.4	1200
2023-11-01	1067.8	1093.6	1098.4	1200

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	2022 Madibaz Rapid Chess Tournament 2	2022-03-21	2022-03-21	Rapid	Nelson Mandela Bay (ENM)	5	5	0	Yes	Analysis
2	2019 USSA Championships (Women)	2019-12-02	2019-12-06	Standard	Sarah Baartman (ESB)	9	9	3.5	Yes	Analysis
3	2018 USSA Championship (Ladies)	2018-07-02	2018-07-06	Standard	Gert Sibande (MGS)	9	9	2.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-04	rnd 5	type Standard	result 1	date 2019-12-05	rnd 6	type Standard	result 1
		Opponent Hlase, RH (Refiloe Hope)				Opponent Nhlambo, S (Sanchia)
2	1	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-06	rnd 9	type Standard	result 0.5	date 2019-12-06	rnd 9	type Standard	result 0.5
		Opponent Jim, Y (Yolanda)				Opponent Jim, Y (Yolanda)
3	1	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-03	rnd 3	type Standard	result 1	date 2019-12-03	rnd 3	type Standard	result 1
		Opponent Mawetu, S (Sambo)				Opponent Mawetu, S (Sambo)

#	Games	Start				End
1	2	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-04	rnd 5	type Standard	result 1	date 2019-12-05	rnd 6	type Standard	result 1
		Opponent Hlase, RH (Refiloe Hope)				Opponent Nhlambo, S (Sanchia)
2	1	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-06	rnd 9	type Standard	result 0.5	date 2019-12-06	rnd 9	type Standard	result 0.5
		Opponent Jim, Y (Yolanda)				Opponent Jim, Y (Yolanda)
3	1	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-03	rnd 3	type Standard	result 1	date 2019-12-03	rnd 3	type Standard	result 1
		Opponent Mawetu, S (Sambo)				Opponent Mawetu, S (Sambo)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-04	rnd 5	type Standard	result 1	date 2019-12-05	rnd 6	type Standard	result 1
		Opponent Hlase, RH (Refiloe Hope)				Opponent Nhlambo, S (Sanchia)
2	1	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-03	rnd 3	type Standard	result 1	date 2019-12-03	rnd 3	type Standard	result 1
		Opponent Mawetu, S (Sambo)				Opponent Mawetu, S (Sambo)
3	1	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-03	rnd 4	type Standard	result 1	date 2018-07-03	rnd 4	type Standard	result 1
		Opponent Ndlovu, N (Nomonde)				Opponent Ndlovu, N (Nomonde)

#	Games	Start				End
1	2	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-04	rnd 5	type Standard	result 1	date 2019-12-05	rnd 6	type Standard	result 1
		Opponent Hlase, RH (Refiloe Hope)				Opponent Nhlambo, S (Sanchia)
2	1	Tournament 2019 USSA Championships				Tournament 2019 USSA Championships
		date 2019-12-03	rnd 3	type Standard	result 1	date 2019-12-03	rnd 3	type Standard	result 1
		Opponent Mawetu, S (Sambo)				Opponent Mawetu, S (Sambo)
3	1	Tournament 2018 USSA Championship				Tournament 2018 USSA Championship
		date 2018-07-03	rnd 4	type Standard	result 1	date 2018-07-03	rnd 4	type Standard	result 1
		Opponent Ndlovu, N (Nomonde)				Opponent Ndlovu, N (Nomonde)

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	Pienaar ,R (Rene)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Pienaar ,R (Rene)	1	1470.3	1045.3	1	1470.3	1045.3	0	0	0	0	0	0
2	Palesa ,N (Nyai)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Palesa ,N (Nyai)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Mathe ,S (Sinethemba)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Mathe ,S (Sinethemba)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Nxumalo ,N (Nontethelelo)	1	1	425	1	1	425	0	0	0	0	0	0
4	Nxumalo ,N (Nontethelelo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Ndlovu ,B (Busisiwe)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Ndlovu ,B (Busisiwe)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Matenchi ,P (Portia)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Matenchi ,P (Portia)	1	1184.9	759.9	1	1181.6	759.9	0	0	0	0	0	0
7	Nhlambo ,S (Sanchia)	1	1	425	1	1	425	0	0	0	0	0	0
7	Nhlambo ,S (Sanchia)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Ndlovu ,N (Nomonde)	1	1	425	1	1	425	0	0	0	0	0	0
8	Ndlovu ,N (Nomonde)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Mawetu ,S (Sambo)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mawetu ,S (Sambo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Nhlapo ,K (Khabonena)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Nhlapo ,K (Khabonena)	1	1158.5	733.5	1	1149.2	733.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Jonas, O (Ongezwa)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms