Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coertzen, J (Jacqueline)

Chess SA id

275073196

FIDE id

Date of birth

1975-12-19 (Adult)

Gender

Female

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1227.3	1146.6	1300	1300
Raw rating	1227.3	1146.6	1300	1300
Weighted rating	1226.8	1146.3	1299.7	1299.7
Weighted performance	0	0	0	0
Floor	727.3	700	800	800
K-factor	36	36	36	36
Min/Max rating change allowed	159.5	178.9	143.8	143.8
Highest rating	1227.3 2024-03-01	1200 2018-10-01	1300 2024-03-01	1300 2024-03-01
Highest raw rating	1227.3 2024-03-01	1200 2018-02-01	1300 2024-03-01	1300 2024-03-01
Highest weighted rating	1227.3 2018-10-01	1200 2018-10-01	1296.7 2025-08-01	1296.7 2025-08-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1227.3	1146.6	1300	1300
Analysis
Rating	1227.3	1146.6	1300	1300
Raw rating	1227.3	1146.6	1300	1300
Weighted rating	1226.8	1146.3	1299.7
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	727.3	700	800	800
Max/Min rating change allowed	159.5	178.9	143.8	143.8
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	1227.3	1146.6	1300	1300
New weighted rating	1227.3	1146.6	1300	1300
New weighted performance	0	0	0	0
Temp new rating	1227.3	1146.6	1300	1300
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1227.3	1146.6	1300	1300
New K-factor	36	36	36	36
New floor	727.3	700	800	800

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	10	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
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	10	2	20	-255	1122.3	867.3
Standard	10	2	20	-255	1122.3	867.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1227.3	1146.6	1300	1300
2025-09-30	1227.3	1146.6	1300	1300
2025-09-01	1227.3	1146.6	1300	1300
2025-08-01	1227.3	1146.6	1300	1300
2025-07-01	1227.3	1146.6	1300	1300
2025-06-01	1227.3	1146.6	1300	1300
2025-05-01	1227.3	1146.6	1300	1300
2025-04-01	1227.3	1146.6	1300	1300
2025-03-01	1227.3	1146.6	1300	1300
2025-02-01	1227.3	1146.6	1300	1300
2025-01-01	1227.3	1146.6	1300	1300
2024-12-01	1227.3	1146.6	1300	1300
2024-11-01	1227.3	1146.6	1300	1300
2024-10-01	1227.3	1146.6	1300	1300
2024-09-01	1227.3	1146.6	1300	1300
2024-08-01	1227.3	1146.6	1300	1300
2024-07-01	1227.3	1146.6	1300	1300
2024-09-01	1227.3	1146.6	1300	1300
2024-05-01	1227.3	1146.6	1300	1300
2024-04-01	1227.3	1146.6	1300	1300
2024-03-01	1227.3	1146.6	1300	1300
2024-02-01	1227.3	1146.6	1300	1300
2024-01-01	1227.3	1146.6	1300	1300
2023-12-01	1078.5	1053.6	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	JNW Club - Trinityhouse Randpark Ridge Open 2020 (Adult)	2020-02-22	2020-02-22	Standard	Johannesburg Metro (GJM)	5	5	0	Yes	Analysis
2	JNW Club - Maragon Open 2019 (Adult)	2019-08-03	2019-08-03	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis

#	Games	Start				End
1	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 5	type Standard	result 1	date 2019-08-03	rnd 5	type Standard	result 1
		Opponent Myburg, A (Andries)				Opponent Myburg, A (Andries)
2	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 3	type Standard	result 1	date 2019-08-03	rnd 3	type Standard	result 1
		Opponent Dinham, J (Jenny)				Opponent Dinham, J (Jenny)

#	Games	Start				End
1	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 5	type Standard	result 1	date 2019-08-03	rnd 5	type Standard	result 1
		Opponent Myburg, A (Andries)				Opponent Myburg, A (Andries)
2	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 3	type Standard	result 1	date 2019-08-03	rnd 3	type Standard	result 1
		Opponent Dinham, J (Jenny)				Opponent Dinham, J (Jenny)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 5	type Standard	result 1	date 2019-08-03	rnd 5	type Standard	result 1
		Opponent Myburg, A (Andries)				Opponent Myburg, A (Andries)
2	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 3	type Standard	result 1	date 2019-08-03	rnd 3	type Standard	result 1
		Opponent Dinham, J (Jenny)				Opponent Dinham, J (Jenny)

#	Games	Start				End
1	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 5	type Standard	result 1	date 2019-08-03	rnd 5	type Standard	result 1
		Opponent Myburg, A (Andries)				Opponent Myburg, A (Andries)
2	1	Tournament JNW Club - Maragon Open 2019				Tournament JNW Club - Maragon Open 2019
		date 2019-08-03	rnd 3	type Standard	result 1	date 2019-08-03	rnd 3	type Standard	result 1
		Opponent Dinham, J (Jenny)				Opponent Dinham, J (Jenny)

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	Dinham ,J (Jenny)	2	1	0	2	1	0	0	0	0	0	0	0
1	Dinham ,J (Jenny)	2	1011.3	1011.3	2	980.6	1011.3	0	0	0	0	0	0
2	Yassa ,Y (Yussuf)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Yassa ,Y (Yussuf)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Kies ,M (Marko)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Kies ,M (Marko)	1	1029.2	604.2	1	1022	604.2	0	0	0	0	0	0
4	Van Der Merwe ,D (Dave)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Van Der Merwe ,D (Dave)	1	1186.2	761.2	1	1183.6	761.2	0	0	0	0	0	0
5	Mungunda ,U (Unotjari)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Mungunda ,U (Unotjari)	1	1323.5	898.5	1	1316.4	898.5	0	0	0	0	0	0
6	Myburg ,A (Andries)	1	1	425	1	1	425	0	0	0	0	0	0
6	Myburg ,A (Andries)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Molo ,S (Sibo)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Molo ,S (Sibo)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Potgieter ,ST (St)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Potgieter ,ST (St)	1	861.3	436.3	1	906.8	436.3	0	0	0	0	0	0
9	Pather ,L (Lineshan)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Pather ,L (Lineshan)	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

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Coertzen, J (Jacqueline)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms