Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, J (John)

Chess SA id

1090154901

FIDE id

Date of birth

2009-11-21 (U18)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-05-11

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1187.9	1177.9	1204	1200
Raw rating	1187.9	1177.9	1204	1200
Weighted rating	1186.1	1177.8	1201.8	1200
Weighted performance	0	0	0	0
Floor	700	700	704	700
K-factor	36	36	36	36
Min/Max rating change allowed	168.7	171.1	164.9	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1204 2024-06-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1204 2024-06-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1204 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1187.9	1177.9	1204	1200
Analysis
Rating	1187.9	1177.9	1204	1200
Raw rating	1187.9	1177.9	1204	1200
Weighted rating	1186.1	1177.8	1201.8
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	704	700
Max/Min rating change allowed	168.7	171.1	164.9	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	1187.9	1177.9	1204	1200
New weighted rating	1186.6	1177.8	1202.4	1200
New weighted performance	0	0	0	0
Temp new rating	1187.9	1177.9	1204	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1187.9	1177.9	1204	1200
New K-factor	36	36	36	36
New floor	700	700	704	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	0	5
	10	5	5
	0	0	0
	0	0	0
History	15	5	10

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Male
Age group	U18
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
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	15	7	46.67	-28.3	1193	1164.6
Standard	5	2	40	-85	1187.6	1102.6
Rapid	10	5	50	0	1195.7	1195.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1187.9	1177.9	1204	1200
2025-09-01	1187.9	1177.9	1204	1200
2025-08-01	1187.9	1177.9	1204	1200
2025-07-01	1187.9	1177.9	1204	1200
2025-06-01	1187.9	1177.9	1204	1200
2025-05-01	1187.9	1177.9	1204	1200
2025-04-01	1187.9	1177.9	1204	1200
2025-03-01	1187.9	1177.9	1204	1200
2025-02-01	1187.9	1177.9	1204	1200
2025-01-01	1187.9	1177.7	1204	1200
2024-12-01	1187.9	1177.7	1204	1200
2024-11-01	1187.9	1177.7	1204	1200
2024-10-01	1187.9	1177.7	1204	1200
2024-09-01	1187.9	1177.7	1204	1200
2024-08-01	1187.9	1177.7	1204	1200
2024-07-01	1187.9	1177.7	1204	1200
2024-06-01	1187.9	1177.7	1204	1200
2024-08-01	1169	1177.7	1180.6	1200
2024-04-01	1169	1177.7	1180.6	1200
2024-03-01	1169	1177.7	1180.6	1200
2024-02-01	1169	1177.7	1180.6	1200
2024-01-01	1169	1177.7	1180.6	1200
2023-12-01	1169	1177.7	1180.6	1200
2023-11-01	1169	1177.7	1180.6	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	Benoni Cluster High Schools Teams 2024 (U15)	2024-05-11	2024-05-11	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
2	Ekurhuleni North Schools Individual Finals 2023 (U15 Boys)	2023-05-13	2023-05-13	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
3	Benoni Cluster High School League 2023 (U15 Open)	2023-05-06	2023-05-06	Rapid	Ekurhuleni (GE)	5	5	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2024-05-11	rnd 5	type Rapid	result 1
		Opponent Taylor, O (Owen)				Opponent Ngoqo, L (Limule)
2	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-13	rnd 1	type Standard	result 1	date 2023-05-13	rnd 2	type Standard	result 1
		Opponent Kooko, T (Tebogo)				Opponent Nasha, W (Wisdom)
3	1	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 2	type Rapid	result 1	date 2024-05-11	rnd 2	type Rapid	result 1
		Opponent Dimaka, E (Ejikeme)				Opponent Dimaka, E (Ejikeme)

#	Games	Start				End
1	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-13	rnd 1	type Standard	result 1	date 2023-05-13	rnd 2	type Standard	result 1
		Opponent Kooko, T (Tebogo)				Opponent Nasha, W (Wisdom)

#	Games	Start				End
1	2	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2024-05-11	rnd 5	type Rapid	result 1
		Opponent Taylor, O (Owen)				Opponent Ngoqo, L (Limule)
2	1	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 2	type Rapid	result 1	date 2024-05-11	rnd 2	type Rapid	result 1
		Opponent Dimaka, E (Ejikeme)				Opponent Dimaka, E (Ejikeme)
3	1	Tournament Benoni Cluster High School League 2023				Tournament Benoni Cluster High School League 2023
		date 2023-05-06	rnd 4	type Rapid	result 1	date 2023-05-06	rnd 4	type Rapid	result 1
		Opponent Kandawasvika, M (Mukundi)				Opponent Kandawasvika, M (Mukundi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2024-05-11	rnd 5	type Rapid	result 1
		Opponent Taylor, O (Owen)				Opponent Ngoqo, L (Limule)
2	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-13	rnd 1	type Standard	result 1	date 2023-05-13	rnd 2	type Standard	result 1
		Opponent Kooko, T (Tebogo)				Opponent Nasha, W (Wisdom)
3	1	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 2	type Rapid	result 1	date 2024-05-11	rnd 2	type Rapid	result 1
		Opponent Dimaka, E (Ejikeme)				Opponent Dimaka, E (Ejikeme)

#	Games	Start				End
1	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-13	rnd 1	type Standard	result 1	date 2023-05-13	rnd 2	type Standard	result 1
		Opponent Kooko, T (Tebogo)				Opponent Nasha, W (Wisdom)

#	Games	Start				End
1	2	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2024-05-11	rnd 5	type Rapid	result 1
		Opponent Taylor, O (Owen)				Opponent Ngoqo, L (Limule)
2	1	Tournament Benoni Cluster High Schools Teams 2024				Tournament Benoni Cluster High Schools Teams 2024
		date 2024-05-11	rnd 2	type Rapid	result 1	date 2024-05-11	rnd 2	type Rapid	result 1
		Opponent Dimaka, E (Ejikeme)				Opponent Dimaka, E (Ejikeme)
3	1	Tournament Benoni Cluster High School League 2023				Tournament Benoni Cluster High School League 2023
		date 2023-05-06	rnd 4	type Rapid	result 1	date 2023-05-06	rnd 4	type Rapid	result 1
		Opponent Kandawasvika, M (Mukundi)				Opponent Kandawasvika, M (Mukundi)

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	Chavula ,C (Charles)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Chavula ,C (Charles)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Mpendu ,S (Sakhile)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Mpendu ,S (Sakhile)	1	1195.4	770.4	1	1192.4	770.4	0	0	0	0	0	0
3	Kooko ,T (Tebogo)	1	1	425	1	1	425	0	0	0	0	0	0
3	Kooko ,T (Tebogo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Machaba ,T (Tshimullo)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Machaba ,T (Tshimullo)	1	1206.2	781.2	1	1205	781.2	0	0	0	0	0	0
5	Nasha ,W (Wisdom)	1	1	425	1	1	425	0	0	0	0	0	0
5	Nasha ,W (Wisdom)	1	1136.5	1561.5	1	1126.4	1561.5	0	0	0	0	0	0
6	Taylor ,O (Owen)	1	1	425	0	0	0	1	1	425	0	0	0
6	Taylor ,O (Owen)	1	1185.2	1610.2	0	0	0	1	1180	1610.2	0	0	0
7	Van Der West ,J (Joshua)	1	1	425	0	0	0	1	1	425	0	0	0
7	Van Der West ,J (Joshua)	1	1159.4	1584.4	0	0	0	1	1200	1584.4	0	0	0
8	Teixeira ,A (Angelo)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Teixeira ,A (Angelo)	1	1211.8	786.8	0	0	0	1	1220.4	786.8	0	0	0
9	Kandawasvika ,M (Mukundi)	1	1	425	0	0	0	1	1	425	0	0	0
9	Kandawasvika ,M (Mukundi)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Mphothome ,T (Tshegofatso)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Mphothome ,T (Tshegofatso)	1	1200	775	0	0	0	1	1200	775	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 (John)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms