Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, Z (Zahne)

Chess SA id

205087157

FIDE id

Date of birth

2005-11-23 (Adult)

Gender

Female

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-08-24

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1111.7	1112.7	678	678
Raw rating	1111.7	1112.7	678	678
Weighted rating	1111.7	1112.7	678	678
Weighted performance	237.1	237.3	0	0
Floor	646.6	649.7	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	188	187.8	348.8	348.8
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1146.6 2018-07-01	1149.7 2018-07-01	678 2024-02-01	678 2024-02-01
Highest weighted rating	1146.6 2024-11-01	1149.7 2024-11-01	678 2024-11-01	678 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	1111.7	1112.7	678	678
Analysis
Rating	1111.7	1112.7	678	678
Raw rating	1111.7	1112.7	678	678
Weighted rating	1111.7	1112.7	678
Weighted performance	237.1	237.3	0
K-factor	40	40	40	40
Floor	646.6	649.7	500	500
Max/Min rating change allowed	188	187.8	348.8	348.8
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	1111.7	1112.7	678	678
New weighted rating	1111.7	1112.7	678	678
New weighted performance	236.7	236.9	0	0
Temp new rating	1111.7	1112.7	678	678
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1111.7	1112.7	678	678
New K-factor	40	40	40	40
New floor	646.6	649.7	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	145	145

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Sedibeng (GSV)
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	83	40	48.19	-15.4	1004.3	988.9
Standard	83	40	48.19	-15.4	1004.3	988.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1111.7	1112.7	678	678
2025-09-01	1111.7	1112.7	678	678
2025-08-01	1111.7	1112.7	678	678
2025-07-01	1111.7	1112.7	678	678
2025-06-01	1111.7	1112.7	678	678
2025-05-01	1111.7	1112.7	678	678
2025-04-01	1111.7	1112.7	678	678
2025-03-01	1111.7	1112.7	678	678
2025-02-01	1111.7	1112.7	678	678
2025-01-01	1111.7	1112.7	678	678
2024-12-01	1111.7	1112.7	678	678
2024-11-01	1111.7	1112.7	678	678
2024-10-01	1111.7	1112.7	678	678
2024-09-01	1111.7	1112.7	678	678
2024-08-01	1111.7	1112.7	678	678
2024-07-01	1111.7	1112.7	678	678
2024-06-01	1111.7	1112.7	678	678
2024-08-01	1111.7	1112.7	678	678
2024-04-01	1111.7	1112.7	678	678
2024-03-01	1111.7	1112.7	678	678
2024-02-01	1111.7	1112.7	678	678
2024-01-01	1111.7	1112.7	678	678
2023-12-01	1111.7	1112.7	678	678
2023-11-01	1111.7	1112.7	678	678

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	2019 Gauteng School League Finals (U15 Open)	2019-08-24	2019-08-24	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	2019 Gauteng Secondary Schools Individual Chess Championships (U15 Girls)	2019-05-25	2019-05-25	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
3	D7 Individuals 2019 (U15 Girls)	2019-05-04	2019-05-04	Standard	Sedibeng (GSV)	5	5	3.5	Yes	Analysis
4	South African Junior Team Championships 2018 (U14C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	1.5	Yes	Analysis
5	2018 Interregion Sedibeng vs Ekurhuleni (I)	2018-11-03	2018-11-03	Standard	Sedibeng (GSV)	5	5	0	Yes	Analysis
6	2018 Sedibeng Summer Open (F)	2018-10-20	2018-10-20	Standard	Sedibeng (GSV)	5	5	0	Yes	Analysis
7	Eureka Chess Open 2018 (F)	2018-09-29	2018-09-29	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
8	2018 Gauteng League Final (U13 Girls)	2018-08-24	2018-08-24	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
9	Heidelberg Klub Round Robin 2018 (Team 2)	2018-08-18	2018-08-18	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
10	TST-MSA Tournament 2018 (A)	2018-07-21	2018-07-21	Standard	Sedibeng (GSV)	5	5	0	Yes	Analysis
11	Hoerskool Drie Riviere Open 2018 (C)	2018-06-09	2018-06-09	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
12	Broadland`s Knights Chess Open 2018 (C)	2018-06-16	2018-06-16	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
13	Heidelberg Skaak Klub 2018 (Team 8)	2018-05-05	2018-05-05	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
14	Amigo Spur Eligwa Chess Open 2018 (C)	2018-05-19	2018-05-19	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
15	D7 Individual 2018 (U13 Girls)	2018-02-24	2018-02-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
16	South African Junior Team Championships 2017 (U14 Girls)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	6	4	Yes	Analysis

#	Games	Start				End
1	7	Tournament Hoerskool Drie Riviere Open 2018				Tournament Broadland`s Knights Chess Open 2018
		date 2018-06-09	rnd 1	type Standard	result 1	date 2018-06-16	rnd 2	type Standard	result 1
		Opponent Van Zyl, R (Rico)				Opponent Naude, E (Enrique)
2	6	Tournament Heidelberg Skaak Klub 2018				Tournament Amigo Spur Eligwa Chess Open 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Pretorius, PJ (Petrus)				Opponent Jonker, J (Jaen-Pierre)
3	4	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament 2019 Gauteng School League Finals
		date 2019-05-25	rnd 3	type Standard	result 1	date 2019-08-24	rnd 1	type Standard	result 1
		Opponent Tshokela, C (Conny)				Opponent Mazibuko, MSM (Mosa Sandile Mwelase)

#	Games	Start				End
1	7	Tournament Hoerskool Drie Riviere Open 2018				Tournament Broadland`s Knights Chess Open 2018
		date 2018-06-09	rnd 1	type Standard	result 1	date 2018-06-16	rnd 2	type Standard	result 1
		Opponent Van Zyl, R (Rico)				Opponent Naude, E (Enrique)
2	6	Tournament Heidelberg Skaak Klub 2018				Tournament Amigo Spur Eligwa Chess Open 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Pretorius, PJ (Petrus)				Opponent Jonker, J (Jaen-Pierre)
3	4	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament 2019 Gauteng School League Finals
		date 2019-05-25	rnd 3	type Standard	result 1	date 2019-08-24	rnd 1	type Standard	result 1
		Opponent Tshokela, C (Conny)				Opponent Mazibuko, MSM (Mosa Sandile Mwelase)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Hoerskool Drie Riviere Open 2018				Tournament Broadland`s Knights Chess Open 2018
		date 2018-06-09	rnd 1	type Standard	result 1	date 2018-06-16	rnd 2	type Standard	result 1
		Opponent Van Zyl, R (Rico)				Opponent Naude, E (Enrique)
2	6	Tournament Heidelberg Skaak Klub 2018				Tournament Amigo Spur Eligwa Chess Open 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Pretorius, PJ (Petrus)				Opponent Jonker, J (Jaen-Pierre)
3	4	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament 2019 Gauteng School League Finals
		date 2019-05-25	rnd 3	type Standard	result 1	date 2019-08-24	rnd 1	type Standard	result 1
		Opponent Tshokela, C (Conny)				Opponent Mazibuko, MSM (Mosa Sandile Mwelase)

#	Games	Start				End
1	7	Tournament Hoerskool Drie Riviere Open 2018				Tournament Broadland`s Knights Chess Open 2018
		date 2018-06-09	rnd 1	type Standard	result 1	date 2018-06-16	rnd 2	type Standard	result 1
		Opponent Van Zyl, R (Rico)				Opponent Naude, E (Enrique)
2	6	Tournament Heidelberg Skaak Klub 2018				Tournament Amigo Spur Eligwa Chess Open 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-05-19	rnd 3	type Standard	result 1
		Opponent Pretorius, PJ (Petrus)				Opponent Jonker, J (Jaen-Pierre)
3	4	Tournament 2019 Gauteng Secondary Schools Individual Chess Championships				Tournament 2019 Gauteng School League Finals
		date 2019-05-25	rnd 3	type Standard	result 1	date 2019-08-24	rnd 1	type Standard	result 1
		Opponent Tshokela, C (Conny)				Opponent Mazibuko, MSM (Mosa Sandile Mwelase)

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	Nel ,A (Altus)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Nel ,A (Altus)	3	1069.9	928.2	3	1071.5	928.2	0	0	0	0	0	0
2	Pretorius ,S (Suate)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Pretorius ,S (Suate)	3	838.6	696.9	3	833.4	696.9	0	0	0	0	0	0
3	De Villiers ,D (Danielle)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	De Villiers ,D (Danielle)	2	1079.8	867.2	2	1070.5	867.2	0	0	0	0	0	0
4	Naude ,E (Enrique)	2	1	0	2	1	0	0	0	0	0	0	0
4	Naude ,E (Enrique)	2	1030.2	1030.2	2	1046.9	1030.2	0	0	0	0	0	0
5	Diedericks ,E (Ethan)	2	2	425	2	2	425	0	0	0	0	0	0
5	Diedericks ,E (Ethan)	2	923.2	1348.2	2	880	1348.2	0	0	0	0	0	0
6	Jones ,M (Musa)	1	1	425	1	1	425	0	0	0	0	0	0
6	Jones ,M (Musa)	1	679.4	1104.4	1	676.4	1104.4	0	0	0	0	0	0
7	Singh ,A (Aryan)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Singh ,A (Aryan)	1	1047.9	622.9	1	1055.8	622.9	0	0	0	0	0	0
8	Du Plooy ,K (Konrad)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Du Plooy ,K (Konrad)	1	967.7	542.7	1	967.4	542.7	0	0	0	0	0	0
9	Rossouw ,R (Rohan)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Rossouw ,R (Rohan)	1	901.4	476.4	1	902.7	476.4	0	0	0	0	0	0
10	Grobler ,S (Stefan)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Grobler ,S (Stefan)	1	1196.8	771.8	1	1187.6	771.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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Statistics

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PLAYER PAGE

Personal

Coetzee, Z (Zahne)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms