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 (U10)

Gender

Male

Region

John Taolo Gaetswewe (NCJ)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1114.5

Item	Main	Standard	Rapid	Blitz
Rating	1237	1244.7	1200	1200
Raw rating	1237	1244.7	1200	1200
Weighted rating	1205.2	1206.3	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	157.3	155.6	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	1202.4 2025-09-01	1202.9 2025-09-01	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	0	0	0	0
New rating	1237	1244.7	1200	1200
Analysis
Rating	1237	1244.7	1200	1200
Raw rating	1237	1244.7	1200	1200
Weighted rating	1205.2	1206.3	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	737	744.7	700	700
Max/Min rating change allowed	157.3	155.6	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	1237	1244.7	1200	1200
New weighted rating	1208	1209.6	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1237	1244.7	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1237	1244.7	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
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
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	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
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JTG Open Tournament 4 2025 (C)	2025-07-26	2025-07-26	Standard	John Taolo Gaetswewe (NCJ)	5	5	3.5	Yes	Analysis
2	2025 Hotazel College Rated Chess Tournament (U11)	2025-05-10	2025-05-10	Standard	John Taolo Gaetswewe (NCJ)	5	4	0	Yes	Analysis
3	JTG Open Tournament 2 2025 (C)	2025-04-12	2025-04-12	Standard	John Taolo Gaetswewe (NCJ)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JTG Open Tournament 4 2025 (C)	2025-07-26	2025-07-26	Standard	John Taolo Gaetswewe (NCJ)	5	5	3.5	Yes	Analysis
2	2025 Hotazel College Rated Chess Tournament (U11)	2025-05-10	2025-05-10	Standard	John Taolo Gaetswewe (NCJ)	5	4	0	Yes	Analysis
3	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