Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, J (Johannes)

Chess SA id

1100108274

FIDE id

Date of birth

2010-11-30 (U16)

Gender

Male

Region

Ehlanzeni (MEN)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-05-11

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1308.5	1301	1178.4	1200
Raw rating	1308.5	1301	1178.4	1200
Weighted rating	1308.4	1300.8	1178.4	1200
Weighted performance	852.2	852.5	0	0
Floor	850.1	850.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	142.1	143.6	171	165.8
Highest rating	1362.3 2023-02-01	1361.2 2023-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1350.1 2023-03-01	1350.2 2023-03-01	1200 2020-01-01	1200 2024-02-01
Highest weighted rating	1350.1 2024-03-01	1350.2 2024-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1362.3 2023-02-01	1361.2 2023-02-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1308.5	1301	1178.4	1200
Analysis
Rating	1308.5	1301	1178.4	1200
Raw rating	1308.5	1301	1178.4	1200
Weighted rating	1308.4	1300.8	1178.4
Weighted performance	852.2	852.5	0
K-factor	36	36	36	36
Floor	850.1	850.2	700	700
Max/Min rating change allowed	142.1	143.6	171	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	1308.5	1301	1178.4	1200
New weighted rating	1308.4	1300.8	1178.4	1200
New weighted performance	844.6	844.9	0	0
Temp new rating	1308.5	1301	1178.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1308.5	1301	1178.4	1200
New K-factor	36	36	36	36
New floor	850.1	850.2	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	15	15	0
	20	20	0
	0	0	0
History	50	45	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Ehlanzeni (MEN)
Province	Mpumalanga (MP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	50	30.5	61	93.5	1174.6	1268.1
Standard	45	28.5	63.33	113.3	1174.8	1288.2
Rapid	5	2	40	-85	1172.1	1087.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1308.5	1301	1178.4	1200
2025-09-30	1308.5	1301	1178.4	1200
2025-09-01	1308.5	1301	1178.4	1200
2025-08-01	1308.5	1301	1178.4	1200
2025-07-01	1308.5	1301	1178.4	1200
2025-06-01	1308.5	1301	1178.4	1200
2025-05-01	1308.5	1301	1178.4	1200
2025-04-01	1308.5	1301	1178.4	1200
2025-03-01	1308.5	1301	1178.4	1200
2025-02-01	1308.5	1301	1178.4	1200
2025-01-01	1308.1	1300.5	1178.4	1200
2024-12-01	1308.1	1300.5	1178.4	1200
2024-11-01	1308.1	1300.5	1178.4	1200
2024-10-01	1308.1	1300.5	1178.4	1200
2024-09-01	1308.1	1300.5	1178.4	1200
2024-08-01	1308.1	1300.5	1178.4	1200
2024-07-01	1308.1	1300.5	1178.4	1200
2024-09-01	1308.1	1300.5	1178.4	1200
2024-05-01	1308.1	1300.5	1178.4	1200
2024-04-01	1308.1	1300.5	1178.4	1200
2024-03-01	1308.1	1300.5	1178.4	1200
2024-02-01	1308.1	1300.5	1178.4	1200
2024-01-01	1308.1	1300.5	1178.4	1200
2023-12-01	1308.1	1300.5	1178.4	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	Robbies 2023 (U14)	2023-05-11	2023-05-11	Standard	Ehlanzeni (MEN)	5	5	2	Yes	Analysis
2	Uplands Chess Tournament 2023 (U14)	2023-02-25	2023-02-25	Standard	Ehlanzeni (MEN)	5	5	4	Yes	Analysis
3	Penryn Chess Tournament 2023 (U14)	2023-02-11	2023-02-11	Standard	Ehlanzeni (MEN)	5	5	3	Yes	Analysis
4	White River Primary 2022 (U14)	2022-07-30	2022-07-30	Standard	Ehlanzeni (MEN)	5	5	4	Yes	Analysis
5	Rob Ferreira Chess Tournament 2022 (U14)	2022-05-07	2022-05-07	Standard	Ehlanzeni (MEN)	5	5	4	Yes	Analysis
6	Lydenburg Chess Club 2022 (U14)	2022-04-09	2022-04-09	Standard	Ehlanzeni (MEN)	5	5	3.5	Yes	Analysis
7	Uplands Chess Tournament 2022 (U14)	2022-02-26	2022-02-26	Standard	Ehlanzeni (MEN)	5	5	3	Yes	Analysis
8	Bergvlam Tournament 2020 (U12)	2020-03-14	2020-03-14	Standard	Ehlanzeni (MEN)	5	5	3	Yes	Analysis
9	OCF Open 2020 (U12)	2020-01-25	2020-01-25	Rapid	Overberg (WOS)	5	5	2	Yes	Analysis
10	Chess Unlimited Open 2019 (D)	2019-01-26	2019-01-26	Standard	Ehlanzeni (MEN)	5	5	2	Yes	Analysis

#	Games	Start				End
1	7	Tournament Lydenburg Chess Club 2022				Tournament Rob Ferreira Chess Tournament 2022
		date 2022-04-09	rnd 3	type Standard	result 1	date 2022-05-07	rnd 4	type Standard	result 1
		Opponent Pretorius, M (Miandi)				Opponent Naidoo, J (Jasbir)
2	6	Tournament White River Primary 2022				Tournament Penryn Chess Tournament 2023
		date 2022-07-30	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Espag, V (Vanesh-Mari)				Opponent Nel, D (Demar)
3	2	Tournament Robbies 2023				Tournament Robbies 2023
		date 2023-05-11	rnd 2	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Brits, J (Janco)				Opponent Mkhabela, A (Agile)

#	Games	Start				End
1	7	Tournament Lydenburg Chess Club 2022				Tournament Rob Ferreira Chess Tournament 2022
		date 2022-04-09	rnd 3	type Standard	result 1	date 2022-05-07	rnd 4	type Standard	result 1
		Opponent Pretorius, M (Miandi)				Opponent Naidoo, J (Jasbir)
2	6	Tournament White River Primary 2022				Tournament Penryn Chess Tournament 2023
		date 2022-07-30	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Espag, V (Vanesh-Mari)				Opponent Nel, D (Demar)
3	2	Tournament Robbies 2023				Tournament Robbies 2023
		date 2023-05-11	rnd 2	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Brits, J (Janco)				Opponent Mkhabela, A (Agile)

#	Games	Start				End
1	1	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 5	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Slingers, L (Lorenzo)				Opponent Slingers, L (Lorenzo)
2	1	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 3	type Rapid	result 1	date 2020-01-25	rnd 3	type Rapid	result 1
		Opponent Joseph, M (Maquin)				Opponent Joseph, M (Maquin)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament White River Primary 2022				Tournament Penryn Chess Tournament 2023
		date 2022-07-30	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Espag, V (Vanesh-Mari)				Opponent Nel, D (Demar)
2	4	Tournament Rob Ferreira Chess Tournament 2022				Tournament Rob Ferreira Chess Tournament 2022
		date 2022-05-07	rnd 1	type Standard	result 1	date 2022-05-07	rnd 4	type Standard	result 1
		Opponent Pretorius, M (Miandi)				Opponent Naidoo, J (Jasbir)
3	2	Tournament Robbies 2023				Tournament Robbies 2023
		date 2023-05-11	rnd 2	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Brits, J (Janco)				Opponent Mkhabela, A (Agile)

#	Games	Start				End
1	6	Tournament White River Primary 2022				Tournament Penryn Chess Tournament 2023
		date 2022-07-30	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Espag, V (Vanesh-Mari)				Opponent Nel, D (Demar)
2	4	Tournament Rob Ferreira Chess Tournament 2022				Tournament Rob Ferreira Chess Tournament 2022
		date 2022-05-07	rnd 1	type Standard	result 1	date 2022-05-07	rnd 4	type Standard	result 1
		Opponent Pretorius, M (Miandi)				Opponent Naidoo, J (Jasbir)
3	2	Tournament Robbies 2023				Tournament Robbies 2023
		date 2023-05-11	rnd 2	type Standard	result 1	date 2023-05-11	rnd 3	type Standard	result 1
		Opponent Brits, J (Janco)				Opponent Mkhabela, A (Agile)

#	Games	Start				End
1	1	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 5	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Slingers, L (Lorenzo)				Opponent Slingers, L (Lorenzo)
2	1	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 3	type Rapid	result 1	date 2020-01-25	rnd 3	type Rapid	result 1
		Opponent Joseph, M (Maquin)				Opponent Joseph, M (Maquin)

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	Joubert ,P (Petrus)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
1	Joubert ,P (Petrus)	3	1184.7	1326.4	3	1177.4	1326.4	0	0	0	0	0	0
2	Ogunjiofor ,CJ (Chinedu Jeremy)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Ogunjiofor ,CJ (Chinedu Jeremy)	2	1338.6	913.6	2	1335.1	913.6	0	0	0	0	0	0
3	Ngomane ,B (Believe)	2	1	0	2	1	0	0	0	0	0	0	0
3	Ngomane ,B (Believe)	2	1210	1210	2	1215.6	1210	0	0	0	0	0	0
4	Eksteen ,J (Jean)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Eksteen ,J (Jean)	2	1178.3	753.3	2	1171.3	753.3	0	0	0	0	0	0
5	Pretorius ,M (Miandi)	2	2	425	2	2	425	0	0	0	0	0	0
5	Pretorius ,M (Miandi)	2	1175.7	1600.7	2	1171	1600.7	0	0	0	0	0	0
6	Malekane ,R (Ronelle N)	2	2	425	2	2	425	0	0	0	0	0	0
6	Malekane ,R (Ronelle N)	2	1093	1518	2	1074.4	1518	0	0	0	0	0	0
7	Botha ,M (Migael)	2	2	425	2	2	425	0	0	0	0	0	0
7	Botha ,M (Migael)	2	1206.1	1631.1	2	1206.8	1631.1	0	0	0	0	0	0
8	Van Staden ,A (Anika)	1	1	425	1	1	425	0	0	0	0	0	0
8	Van Staden ,A (Anika)	1	1147.3	1572.3	1	1137.6	1572.3	0	0	0	0	0	0
9	Mkhatshwa ,B (Badanile)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mkhatshwa ,B (Badanile)	1	1248.2	823.2	1	1262.6	823.2	0	0	0	0	0	0
10	Bouwer ,F (Frank)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Bouwer ,F (Frank)	1	1200	775	1	1200	775	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 (Johannes)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms