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

Item	Main	Standard	Rapid	Blitz
Rating	1332	1357	1200	1200
Raw rating	1332	1357	1200	1200
Weighted rating	1260.9	1272.5	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	1260.9	1272.5	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	1268.6	1281.6	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
2026-01-01	1332	1357	1200	1200
2025-11-30	1332	1357	1200	1200
2025-11-01	1332	1357	1200	1200
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
2024-11-01	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	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

Tournaments

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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