Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, J (Johann)

Chess SA id

1080151273

FIDE id

Date of birth

2008-06-07 (U18)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-08-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1242.8	1189	1257.4	1200
Raw rating	1242.8	1189	1257.4	1200
Weighted rating	1242.8	1189	1257.4	1200
Weighted performance	0	0	0	0
Floor	742.8	720	757.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	156	168.4	152.8	165.8
Highest rating	1271.4 2023-08-01	1240.9 2023-02-01	1376.6 2023-08-01	1200 2018-10-01
Highest raw rating	1242.8 2024-03-01	1220 2023-03-01	1257.4 2024-03-01	1200 2024-03-01
Highest weighted rating	1242.8 2025-07-01	1220 2023-03-01	1257.4 2025-07-01	1200 2018-10-01
Highest weighted performance	1271.4 2023-08-01	1240.9 2023-02-01	1376.6 2023-08-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1242.8	1189	1257.4	1200
Analysis
Rating	1242.8	1189	1257.4	1200
Raw rating	1242.8	1189	1257.4	1200
Weighted rating	1242.8	1189	1257.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	742.8	720	757.4	700
Max/Min rating change allowed	156	168.4	152.8	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	1242.8	1189	1257.4	1200
New weighted rating	1242.8	1189	1257.4	1200
New weighted performance	0	0	0	0
Temp new rating	1242.8	1189	1257.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1242.8	1189	1257.4	1200
New K-factor	36	36	36	36
New floor	742.8	720	757.4	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	17	10	7
	0	0	0
	0	0	0
History	17	10	7

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	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	17	10	58.82	75	1208.7	1283.7
Standard	10	5	50	0	1170.9	1170.9
Rapid	7	5	71.43	182.1	1262.7	1444.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1242.8	1189	1257.4	1200
2025-09-01	1242.8	1189	1257.4	1200
2025-08-01	1242.8	1189	1257.4	1200
2025-07-01	1242.8	1189	1257.4	1200
2025-06-01	1242.8	1189	1257.4	1200
2025-05-01	1242.8	1189	1257.4	1200
2025-04-01	1242.8	1189	1257.4	1200
2025-03-01	1242.8	1189	1257.4	1200
2025-02-01	1242.8	1189	1257.4	1200
2025-01-01	1242.8	1189	1257.4	1200
2024-12-01	1242.8	1189	1257.4	1200
2024-11-01	1242.8	1189	1257.4	1200
2024-10-01	1242.8	1189	1257.4	1200
2024-09-01	1242.8	1189	1257.4	1200
2024-08-01	1242.8	1189	1257.4	1200
2024-07-01	1242.8	1189	1257.4	1200
2024-06-01	1242.8	1189	1257.4	1200
2024-08-01	1242.8	1189	1257.4	1200
2024-04-01	1242.8	1189	1257.4	1200
2024-03-01	1242.8	1189	1257.4	1200
2024-02-01	1242.8	1189	1257.4	1200
2024-01-01	1242.8	1189	1257.4	1200
2023-12-01	1242.8	1189	1257.4	1200
2023-11-01	1242.8	1189	1257.4	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	CW Top Schools 2023 (U15 Mix)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
2	Cape Town Junior League 2nd Qualifier 2023 (U20)	2023-06-03	2023-06-03	Rapid	Cape Town (WCT)	6	2	1	Yes	Analysis
3	Cape Winelands Schools Prestige 2023 (U15 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
4	Cape Winelands Schools Chess - Trials 1 2023 (U15 Boys)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 4	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Snyman, W (Willem)				Opponent Van De Vyver, W (Wian)
2	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 1	type Rapid	result 1	date 2023-08-26	rnd 2	type Rapid	result 1
		Opponent Scheepers, D (Durran)				Opponent Maqungo, J (Junior)
3	2	Tournament Cape Winelands Schools Prestige 2023				Tournament Cape Town Junior League 2nd Qualifier 2023
		date 2023-03-11	rnd 5	type Standard	result 0.5	date 2023-06-03	rnd 2	type Rapid	result 1
		Opponent Abrahams, Q (Qasim)				Opponent Gabavu, N (Ndima)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-02-25	rnd 5	type Standard	result 1
		Opponent Van Niekerk, M (Mariano)				Opponent Grobbelaar, A (Altus)
2	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 0.5
		Opponent Mootsi, K (Karabo)				Opponent Koopman, J (Jayden)
3	1	Tournament Cape Winelands Schools Prestige 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-03-11	rnd 5	type Standard	result 0.5	date 2023-03-11	rnd 5	type Standard	result 0.5
		Opponent Abrahams, Q (Qasim)				Opponent Abrahams, Q (Qasim)

#	Games	Start				End
1	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 4	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Snyman, W (Willem)				Opponent Van De Vyver, W (Wian)
2	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 1	type Rapid	result 1	date 2023-08-26	rnd 2	type Rapid	result 1
		Opponent Scheepers, D (Durran)				Opponent Maqungo, J (Junior)
3	1	Tournament Cape Town Junior League 2nd Qualifier 2023				Tournament Cape Town Junior League 2nd Qualifier 2023
		date 2023-06-03	rnd 2	type Rapid	result 1	date 2023-06-03	rnd 2	type Rapid	result 1
		Opponent Gabavu, N (Ndima)				Opponent Gabavu, N (Ndima)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 4	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Snyman, W (Willem)				Opponent Van De Vyver, W (Wian)
2	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 1	type Rapid	result 1	date 2023-08-26	rnd 2	type Rapid	result 1
		Opponent Scheepers, D (Durran)				Opponent Maqungo, J (Junior)
3	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-02-25	rnd 5	type Standard	result 1
		Opponent Van Niekerk, M (Mariano)				Opponent Grobbelaar, A (Altus)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-02-25	rnd 5	type Standard	result 1
		Opponent Van Niekerk, M (Mariano)				Opponent Grobbelaar, A (Altus)
2	1	Tournament Cape Winelands Schools Prestige 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-03-11	rnd 3	type Standard	result 1	date 2023-03-11	rnd 3	type Standard	result 1
		Opponent Solomon, B (Brooklyn)				Opponent Solomon, B (Brooklyn)
3	1	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 1	type Standard	result 1
		Opponent Mootsi, K (Karabo)				Opponent Mootsi, K (Karabo)

#	Games	Start				End
1	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 4	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Snyman, W (Willem)				Opponent Van De Vyver, W (Wian)
2	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 1	type Rapid	result 1	date 2023-08-26	rnd 2	type Rapid	result 1
		Opponent Scheepers, D (Durran)				Opponent Maqungo, J (Junior)
3	1	Tournament Cape Town Junior League 2nd Qualifier 2023				Tournament Cape Town Junior League 2nd Qualifier 2023
		date 2023-06-03	rnd 2	type Rapid	result 1	date 2023-06-03	rnd 2	type Rapid	result 1
		Opponent Gabavu, N (Ndima)				Opponent Gabavu, N (Ndima)

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	Scholtz ,T (Triston)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Scholtz ,T (Triston)	1	1259.7	834.7	1	1263.6	834.7	0	0	0	0	0	0
2	Abrahams ,Q (Qasim)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
2	Abrahams ,Q (Qasim)	1	1222.2	1222.2	1	1221.6	1222.2	0	0	0	0	0	0
3	Koopman ,J (Jayden)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
3	Koopman ,J (Jayden)	1	1208.5	1208.5	1	1178.2	1208.5	0	0	0	0	0	0
4	Van Niekerk ,M (Mariano)	1	1	425	1	1	425	0	0	0	0	0	0
4	Van Niekerk ,M (Mariano)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Cooper ,H (Hayden)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Cooper ,H (Hayden)	1	1299.2	874.2	1	1299.1	874.2	0	0	0	0	0	0
6	Solomon ,B (Brooklyn)	1	1	425	1	1	425	0	0	0	0	0	0
6	Solomon ,B (Brooklyn)	1	1189.3	1614.3	1	1200	1614.3	0	0	0	0	0	0
7	Alkaster ,R (Rickelme)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Alkaster ,R (Rickelme)	1	1296.1	871.1	1	1276.8	871.1	0	0	0	0	0	0
8	Mootsi ,K (Karabo)	1	1	425	1	1	425	0	0	0	0	0	0
8	Mootsi ,K (Karabo)	1	510	935	1	510	935	0	0	0	0	0	0
9	De Vos ,ES (Eustace Steyn)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	De Vos ,ES (Eustace Steyn)	1	1199.9	774.9	1	1111	774.9	0	0	0	0	0	0
10	Grobbelaar ,A (Altus)	1	1	425	1	1	425	0	0	0	0	0	0
10	Grobbelaar ,A (Altus)	1	1324.1	1749.1	1	1304.8	1749.1	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Van Der Merwe, J (Johann)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms