Chess South Africa Ratings Database

PLAYER PAGE

Personal

Zinyeredzi, J (Jubilee)

Chess SA id

2070144894

FIDE id

Date of birth

2007-03-28 (U20)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-10-05

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1055.9	1035.8	1186.9	1200
Raw rating	1055.9	1035.8	1186.9	1200
Weighted rating	1051.9	1031.7	1185.1	1200
Weighted performance	752.8	711.9	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	203.6	209.5	168.9	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1291 2024-09-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01	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	1291 2024-09-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1055.9	1035.8	1186.9	1200
Analysis
Rating	1055.9	1035.8	1186.9	1200
Raw rating	1055.9	1035.8	1186.9	1200
Weighted rating	1051.9	1031.7	1185.1
Weighted performance	752.8	711.9	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	203.6	209.5	168.9	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	1055.9	1035.8	1186.9	1200
New weighted rating	1051.8	1031.5	1185.1	1200
New weighted performance	751.9	711	0	0
Temp new rating	1055.9	1035.8	1186.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1055.9	1035.8	1186.9	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	14	9	5
	5	5	0
	8	8	0
	0	0	0
History	27	22	5

Games since
	Main 14	Standard 9		Rapid 5		Blitz 0
Gender	Female
Age group	U20
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 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	5.5	20.37	-251.9	1198.2	946.4
Standard	22	3.5	15.91	-289.8	1206.1	916.3
Rapid	5	2	40	-85	1163.7	1078.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1055.9	1035.8	1186.9	1200
2025-09-01	1055.9	1035.8	1186.9	1200
2025-08-01	1055.9	1035.8	1186.9	1200
2025-07-01	1055.9	1035.8	1186.9	1200
2025-06-01	1055.9	1035.8	1186.9	1200
2025-05-01	1055.9	1035.8	1186.9	1200
2025-04-01	1055.9	1035.8	1186.9	1200
2025-03-01	1055.9	1035.8	1186.9	1200
2025-02-01	1054.6	1034.4	1186.5	1200
2025-01-01	1021.5	997.2	1175.2	1200
2024-12-01	1021.5	997.2	1175.2	1200
2024-11-01	1021.5	997.2	1175.2	1200
2024-10-01	1042.1	1016	1175.2	1200
2024-09-01	1027.5	1016	1164	1200
2024-08-01	1027.5	1016	1164	1200
2024-07-01	1078.8	1059.2	1200	1200
2024-06-01	1078.8	1059.2	1200	1200
2024-08-01	1078.8	1059.2	1200	1200
2024-04-01	1078.8	1059.2	1200	1200
2024-03-01	1078.8	1059.2	1200	1200
2024-02-01	1078.8	1059.2	1200	1200
2024-01-01	1078.8	1059.2	1200	1200
2023-12-01	1078.8	1059.2	1200	1200
2023-11-01	1078.8	1059.2	1200	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	Gauteng Top Schools 2024 (High Reserves)	2024-10-05	2024-10-05	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
2	Ekurhuleni North Schools Finals - Teams 2024 (U19 Girls)	2024-08-02	2024-08-02	Rapid	Ekurhuleni (GE)	3	1	1	Yes	Analysis
3	Edenvale High School Team Clusters 2024	2024-07-20	2024-07-20	Rapid	Ekurhuleni (GE)	5	4	1	Yes	Analysis
4	EN Chess Club Winter Open 2024 (B)	2024-06-29	2024-06-29	Standard	Ekurhuleni (GE)	5	4	0	Yes	Analysis
5	Ekurhuleni North School Teams 2023 (Reserves)	2023-08-05	2023-08-05	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
6	2022 Gauteng Schools Team Championships (U15 Girls)	2022-08-26	2022-08-26	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
7	Ekurhuleni-North Schools Teams 2022 (U15 Reserves)	2022-08-13	2022-08-13	Standard	Ekurhuleni (GE)	5	4	1	Yes	Analysis

#	Games	Start				End
1	1	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 3	type Standard	result 1	date 2024-10-05	rnd 3	type Standard	result 1
		Opponent Mrutu, L (Latifa)				Opponent Mrutu, L (Latifa)
2	1	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Ekurhuleni North Schools Finals - Teams 2024
		date 2024-08-02	rnd 3	type Rapid	result 1	date 2024-08-02	rnd 3	type Rapid	result 1
		Opponent Abbott, C (Chante)				Opponent Abbott, C (Chante)
3	1	Tournament Edenvale High School Team Clusters 2024				Tournament Edenvale High School Team Clusters 2024
		date 2024-07-20	rnd 1	type Rapid	result 1	date 2024-07-20	rnd 1	type Rapid	result 1
		Opponent Manaka, K (Kgotso)				Opponent Manaka, K (Kgotso)

#	Games	Start				End
1	1	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 3	type Standard	result 1	date 2024-10-05	rnd 3	type Standard	result 1
		Opponent Mrutu, L (Latifa)				Opponent Mrutu, L (Latifa)
2	1	Tournament Ekurhuleni North School Teams 2023				Tournament Ekurhuleni North School Teams 2023
		date 2023-08-05	rnd 3	type Standard	result 1	date 2023-08-05	rnd 3	type Standard	result 1
		Opponent Osmond, L (Lillian)				Opponent Osmond, L (Lillian)
3	1	Tournament 2022 Gauteng Schools Team Championships				Tournament 2022 Gauteng Schools Team Championships
		date 2022-08-26	rnd 5	type Standard	result 0.5	date 2022-08-26	rnd 5	type Standard	result 0.5
		Opponent Meyer, J (Johannes)				Opponent Meyer, J (Johannes)

#	Games	Start				End
1	1	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Ekurhuleni North Schools Finals - Teams 2024
		date 2024-08-02	rnd 3	type Rapid	result 1	date 2024-08-02	rnd 3	type Rapid	result 1
		Opponent Abbott, C (Chante)				Opponent Abbott, C (Chante)
2	1	Tournament Edenvale High School Team Clusters 2024				Tournament Edenvale High School Team Clusters 2024
		date 2024-07-20	rnd 1	type Rapid	result 1	date 2024-07-20	rnd 1	type Rapid	result 1
		Opponent Manaka, K (Kgotso)				Opponent Manaka, K (Kgotso)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 3	type Standard	result 1	date 2024-10-05	rnd 3	type Standard	result 1
		Opponent Mrutu, L (Latifa)				Opponent Mrutu, L (Latifa)
2	1	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Ekurhuleni North Schools Finals - Teams 2024
		date 2024-08-02	rnd 3	type Rapid	result 1	date 2024-08-02	rnd 3	type Rapid	result 1
		Opponent Abbott, C (Chante)				Opponent Abbott, C (Chante)
3	1	Tournament Edenvale High School Team Clusters 2024				Tournament Edenvale High School Team Clusters 2024
		date 2024-07-20	rnd 1	type Rapid	result 1	date 2024-07-20	rnd 1	type Rapid	result 1
		Opponent Manaka, K (Kgotso)				Opponent Manaka, K (Kgotso)

#	Games	Start				End
1	1	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 3	type Standard	result 1	date 2024-10-05	rnd 3	type Standard	result 1
		Opponent Mrutu, L (Latifa)				Opponent Mrutu, L (Latifa)
2	1	Tournament Ekurhuleni North School Teams 2023				Tournament Ekurhuleni North School Teams 2023
		date 2023-08-05	rnd 3	type Standard	result 1	date 2023-08-05	rnd 3	type Standard	result 1
		Opponent Osmond, L (Lillian)				Opponent Osmond, L (Lillian)
3	1	Tournament Ekurhuleni-North Schools Teams 2022				Tournament Ekurhuleni-North Schools Teams 2022
		date 2022-08-13	rnd 4	type Standard	result 1	date 2022-08-13	rnd 4	type Standard	result 1
		Opponent Mapurisa, H (Hope)				Opponent Mapurisa, H (Hope)

#	Games	Start				End
1	1	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Ekurhuleni North Schools Finals - Teams 2024
		date 2024-08-02	rnd 3	type Rapid	result 1	date 2024-08-02	rnd 3	type Rapid	result 1
		Opponent Abbott, C (Chante)				Opponent Abbott, C (Chante)
2	1	Tournament Edenvale High School Team Clusters 2024				Tournament Edenvale High School Team Clusters 2024
		date 2024-07-20	rnd 1	type Rapid	result 1	date 2024-07-20	rnd 1	type Rapid	result 1
		Opponent Manaka, K (Kgotso)				Opponent Manaka, K (Kgotso)

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	Mapurisa ,H (Hope)	1	1	425	1	1	425	0	0	0	0	0	0
1	Mapurisa ,H (Hope)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Meyer ,J (Johannes)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
2	Meyer ,J (Johannes)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
3	Osmond ,L (Lillian)	1	1	425	1	1	425	0	0	0	0	0	0
3	Osmond ,L (Lillian)	1	1172.8	1597.8	1	1167.6	1597.8	0	0	0	0	0	0
4	Ntshalinthali ,W (Wandik)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Ntshalinthali ,W (Wandik)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Mthethwa ,N (Nonhle)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Mthethwa ,N (Nonhle)	1	1215.1	790.1	1	1228.4	790.1	0	0	0	0	0	0
6	Ntombela ,P (Prince)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Ntombela ,P (Prince)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Deale ,J (Joubert)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Deale ,J (Joubert)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Moyo ,M (Melusi)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Moyo ,M (Melusi)	1	1235.5	810.5	1	1232.8	810.5	0	0	0	0	0	0
9	Maluleke ,L (Lulama)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Maluleke ,L (Lulama)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Magayiyane ,M (Mduduzi)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Magayiyane ,M (Mduduzi)	1	1200	775	1	1200	775	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

Zinyeredzi, J (Jubilee)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms