Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van der Merwe, J (Jarno)

Chess SA id

1150319187

FIDE id

Date of birth

2015-08-04 (U12)

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

1462.6

Item	Main	Standard	Rapid	Blitz
Rating	1332	1357	1200	1200
Raw rating	1332	1357	1200	1200
Weighted rating	1235.3	1242	1200	1200
Weighted performance	0	0	0	0
Floor	832	857	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	137.4	132.6	165.8	165.8
Highest rating	1332 2025-09-01	1357 2025-09-01	1200 2025-05-05	1200 2025-05-05
Highest raw rating	1332 2025-09-01	1357 2025-09-01	1200 2025-05-05	1200 2025-05-05
Highest weighted rating	1225.9 2025-09-01	1230.8 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	1332	1357	1200	1200
Analysis
Rating	1332	1357	1200	1200
Raw rating	1332	1357	1200	1200
Weighted rating	1235.3	1242	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	832	857	700	700
Max/Min rating change allowed	137.4	132.6	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	1332	1357	1200	1200
New weighted rating	1244.3	1252.7	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1332	1357	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1332	1357	1200	1200
New K-factor	36	36	36	36
New floor	832	857	700	700

Item	Main	Standard
	0	0
	15	15
	0	0
	0	0
	0	0
	0	0
History	15	15

Games since
	Main 15	Standard 15		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	John Taolo Gaetswewe (NCJ)
Province	Northern Cape (NC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	15	12	80	255	1217.6	1472.6
Standard	15	12	80	255	1217.6	1472.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	15	12	80	255	1217.6	1472.6
Standard	15	12	80	255	1217.6	1472.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1332	1357	1200	1200
2025-09-01	1332	1357	1200	1200
2025-08-01	1259.2	1270	1200	1200
2025-07-01	1259.2	1270	1200	1200
2025-06-01	1259.2	1270	1200	1200
2025-05-01	1235.4	1242.8	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	5	Yes	Analysis
2	2025 Hotazel College Rated Chess Tournament (U11)	2025-05-10	2025-05-10	Standard	John Taolo Gaetswewe (NCJ)	5	5	3.5	Yes	Analysis
3	JTG Open Tournament 2 2025 (C)	2025-04-12	2025-04-12	Standard	John Taolo Gaetswewe (NCJ)	5	5	3.5	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	5	Yes	Analysis
2	2025 Hotazel College Rated Chess Tournament (U11)	2025-05-10	2025-05-10	Standard	John Taolo Gaetswewe (NCJ)	5	5	3.5	Yes	Analysis
3	JTG Open Tournament 2 2025 (C)	2025-04-12	2025-04-12	Standard	John Taolo Gaetswewe (NCJ)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	8	Tournament 2025 Hotazel College Rated Chess Tournament				Tournament JTG Open Tournament 4 2025
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Da Costa, C (Caleigh)				Opponent Moeke, Z (Zweli)
2	3	Tournament JTG Open Tournament 2 2025				Tournament 2025 Hotazel College Rated Chess Tournament
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Ellis, M (Malherbe James)				Opponent Diergaardt, N (Novah)
3	2	Tournament JTG Open Tournament 2 2025				Tournament JTG Open Tournament 2 2025
		date 2025-04-12	rnd 1	type Standard	result 0.5	date 2025-04-12	rnd 2	type Standard	result 1
		Opponent Vilakazi, U (Uyanda)				Opponent Modimola, K (Karabo)

#	Games	Start				End
1	8	Tournament 2025 Hotazel College Rated Chess Tournament				Tournament JTG Open Tournament 4 2025
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Da Costa, C (Caleigh)				Opponent Moeke, Z (Zweli)
2	3	Tournament JTG Open Tournament 2 2025				Tournament 2025 Hotazel College Rated Chess Tournament
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Ellis, M (Malherbe James)				Opponent Diergaardt, N (Novah)
3	2	Tournament JTG Open Tournament 2 2025				Tournament JTG Open Tournament 2 2025
		date 2025-04-12	rnd 1	type Standard	result 0.5	date 2025-04-12	rnd 2	type Standard	result 1
		Opponent Vilakazi, U (Uyanda)				Opponent Modimola, K (Karabo)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2025 Hotazel College Rated Chess Tournament				Tournament JTG Open Tournament 4 2025
		date 2025-05-10	rnd 5	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Chinyama, B (Bothlale)				Opponent Moeke, Z (Zweli)
2	3	Tournament JTG Open Tournament 2 2025				Tournament 2025 Hotazel College Rated Chess Tournament
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Ellis, M (Malherbe James)				Opponent Diergaardt, N (Novah)
3	1	Tournament 2025 Hotazel College Rated Chess Tournament				Tournament 2025 Hotazel College Rated Chess Tournament
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Da Costa, C (Caleigh)				Opponent Da Costa, C (Caleigh)

#	Games	Start				End
1	6	Tournament 2025 Hotazel College Rated Chess Tournament				Tournament JTG Open Tournament 4 2025
		date 2025-05-10	rnd 5	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Chinyama, B (Bothlale)				Opponent Moeke, Z (Zweli)
2	3	Tournament JTG Open Tournament 2 2025				Tournament 2025 Hotazel College Rated Chess Tournament
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Ellis, M (Malherbe James)				Opponent Diergaardt, N (Novah)
3	1	Tournament 2025 Hotazel College Rated Chess Tournament				Tournament 2025 Hotazel College Rated Chess Tournament
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Da Costa, C (Caleigh)				Opponent Da Costa, C (Caleigh)

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	Modimola ,K (Karabo)	1	1	425	1	1	425	0	0	0	0	0	0
1	Modimola ,K (Karabo)	1	1199.7	1624.7	1	1199.6	1624.7	0	0	0	0	0	0
2	Kuhn ,JC (Johannes Cornelius)	1	1	425	1	1	425	0	0	0	0	0	0
2	Kuhn ,JC (Johannes Cornelius)	1	1240.3	1665.3	1	1246.5	1665.3	0	0	0	0	0	0
3	Moeke ,Z (Zweli)	1	1	425	1	1	425	0	0	0	0	0	0
3	Moeke ,Z (Zweli)	1	1335.7	1760.7	1	1360.6	1760.7	0	0	0	0	0	0
4	Da Costa ,C (Caleigh)	1	1	425	1	1	425	0	0	0	0	0	0
4	Da Costa ,C (Caleigh)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Chimalizeni ,J (Jayden)	1	1	425	1	1	425	0	0	0	0	0	0
5	Chimalizeni ,J (Jayden)	1	1229.7	1654.7	1	1236	1654.7	0	0	0	0	0	0
6	Vilakazi ,U (Uyanda)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Vilakazi ,U (Uyanda)	1	1194.9	1194.9	1	1193.9	1194.9	0	0	0	0	0	0
7	Diergaardt ,N (Novah)	1	1	425	1	1	425	0	0	0	0	0	0
7	Diergaardt ,N (Novah)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Kuehn ,J (Johannes)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Kuehn ,J (Johannes)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
9	Ellis ,M (Malherbe James)	1	1	425	1	1	425	0	0	0	0	0	0
9	Ellis ,M (Malherbe James)	1	1197.5	1622.5	1	1197	1622.5	0	0	0	0	0	0
10	Snewe ,D (Damisha)	1	1	425	1	1	425	0	0	0	0	0	0
10	Snewe ,D (Damisha)	1	1198.8	1623.8	1	1198.6	1623.8	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, J (Jarno)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms