Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, Z (Zian)

Chess SA id

1160319183

FIDE id

Date of birth

2016-10-17 (U12)

Gender

Male

Region

John Taolo Gaetswewe (NCJ)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1209	1210.2	1200	1200
Raw rating	1185.9	1174.8	1200	1200
Weighted rating	1209	1210.2	1200	1200
Weighted performance	0	0	0	0
Floor	737	744.7	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	169.2	171.9	165.8	165.8
Highest rating	1237 2025-09-01	1244.7 2025-09-01	1200 2025-05-05	1200 2025-05-05
Highest raw rating	1237 2025-09-01	1244.7 2025-09-01	1200 2025-05-05	1200 2025-05-05
Highest weighted rating	1209 2026-01-01	1210.2 2026-01-01	1200 2025-05-05	1200 2025-05-05
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.5	-2.5	0	0
New rating	1207.5	1207.7	1200	1200
Analysis
Rating	1209	1210.2	1200	1200
Raw rating	1185.9	1174.8	1200	1200
Weighted rating	1209	1210.2	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	737	744.7	700	700
Max/Min rating change allowed	169.2	171.9	165.8	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	1185.9	1174.8	1200	1200
New weighted rating	1207.5	1207.7	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1207.5	1207.7	1200	1200
Temp new rating +/-	-1.5	-2.5	0	0
Final new rating +/-	-1.5	-2.5	0	0
New rating	1207.5	1207.7	1200	1200
New K-factor	36	36	36	36
New floor	737	744.7	700	700

Item	Main	Standard
	0	0
	14	14
	0	0
	0	0
	0	0
	0	0
History	14	14

Games since
	Main 14	Standard 14		Rapid 0		Blitz 0
Gender	Male
Age group	U10
Region	John Taolo Gaetswewe (NCJ)
Province	Northern Cape (NC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-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	14	5.5	39.29	-91.1	1206.1	1115
Standard	14	5.5	39.29	-91.1	1206.1	1115
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	14	5.5	39.29	-91.1	1206.1	1115
Standard	14	5.5	39.29	-91.1	1206.1	1115
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1185.9	1174.8	1200	1200
2025-11-30	1237	1244.7	1200	1200
2025-11-01	1237	1244.7	1200	1200
2025-09-30	1237	1244.7	1200	1200
2025-09-01	1237	1244.7	1200	1200
2025-08-01	1199.4	1199.2	1200	1200
2025-07-01	1199.1	1198.9	1200	1200
2025-06-01	1194.5	1193.4	1200	1200
2025-05-01	1198.8	1198.6	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	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	2025 Mzansi Individual Championships (U10 Open)	2025-12-17	2025-12-20	Standard	Nelson Mandela Bay (ENM)	6	0	0	No	Analysis
2	2025 Mzansi Inter Provincial Team Championships (U10 Combined)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	6	1	Yes	Analysis
3	JTG Open Tournament 4 2025 (C)	2025-07-26	2025-07-26	Standard	John Taolo Gaetswewe (NCJ)	5	5	3.5	Yes	Analysis
4	2025 Hotazel College Rated Chess Tournament (U11)	2025-05-10	2025-05-10	Standard	John Taolo Gaetswewe (NCJ)	5	4	0	Yes	Analysis
5	JTG Open Tournament 2 2025 (C)	2025-04-12	2025-04-12	Standard	John Taolo Gaetswewe (NCJ)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 0.5
		Opponent Mafura, T (Thuto)				Opponent Pretorius, D (Daniel)
2	1	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Mafulako, R (Retspehile)				Opponent Mafulako, R (Retspehile)
3	1	Tournament JTG Open Tournament 2 2025				Tournament JTG Open Tournament 2 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Vilakazi, U (Uyanda)				Opponent Vilakazi, U (Uyanda)

#	Games	Start				End
1	3	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 0.5
		Opponent Mafura, T (Thuto)				Opponent Pretorius, D (Daniel)
2	1	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Mafulako, R (Retspehile)				Opponent Mafulako, R (Retspehile)
3	1	Tournament JTG Open Tournament 2 2025				Tournament JTG Open Tournament 2 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Vilakazi, U (Uyanda)				Opponent Vilakazi, U (Uyanda)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Mafura, T (Thuto)				Opponent Johantan, T (Tlotlo)
2	1	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Mafulako, R (Retspehile)				Opponent Mafulako, R (Retspehile)
3	1	Tournament JTG Open Tournament 2 2025				Tournament JTG Open Tournament 2 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Vilakazi, U (Uyanda)				Opponent Vilakazi, U (Uyanda)

#	Games	Start				End
1	2	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Mafura, T (Thuto)				Opponent Johantan, T (Tlotlo)
2	1	Tournament JTG Open Tournament 4 2025				Tournament JTG Open Tournament 4 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Mafulako, R (Retspehile)				Opponent Mafulako, R (Retspehile)
3	1	Tournament JTG Open Tournament 2 2025				Tournament JTG Open Tournament 2 2025
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Vilakazi, U (Uyanda)				Opponent Vilakazi, U (Uyanda)

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	Du Plessis ,J (Jazwin)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Du Plessis ,J (Jazwin)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Mafura ,T (Thuto)	1	1	425	1	1	425	0	0	0	0	0	0
2	Mafura ,T (Thuto)	1	1199.7	1624.7	1	1199.7	1624.7	0	0	0	0	0	0
3	Moyo ,L (Lucas)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Moyo ,L (Lucas)	1	1226.3	801.3	1	1233.6	801.3	0	0	0	0	0	0
4	Xulu ,Z (Zethembiso)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Xulu ,Z (Zethembiso)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Johantan ,T (Tlotlo)	1	1	425	1	1	425	0	0	0	0	0	0
5	Johantan ,T (Tlotlo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Vilakazi ,U (Uyanda)	1	1	425	1	1	425	0	0	0	0	0	0
6	Vilakazi ,U (Uyanda)	1	1194.9	1619.9	1	1193.9	1619.9	0	0	0	0	0	0
7	Mafulako ,R (Retspehile)	1	1	425	1	1	425	0	0	0	0	0	0
7	Mafulako ,R (Retspehile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Pretorius ,D (Daniel)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Pretorius ,D (Daniel)	1	1199.9	1199.9	1	1199.9	1199.9	0	0	0	0	0	0
9	Kutu ,A (Ayanda)	1	1	425	1	1	425	0	0	0	0	0	0
9	Kutu ,A (Ayanda)	1	1194.4	1619.4	1	1193.3	1619.4	0	0	0	0	0	0
10	Adams ,J (Jacquin)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Adams ,J (Jacquin)	1	1199.1	774.1	1	1198.9	774.1	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

Van Der Merwe, Z (Zian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms