Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, A (Adele)

Chess SA id

2130145729

FIDE id

Date of birth

2013-12-24 (U14)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1281.4

Item	Main	Standard	Rapid	Blitz
Rating	1234.9	1243.5	1200	1200
Raw rating	1228.2	1243.5	1200	1200
Weighted rating	1161	1162.6	1200	1200
Weighted performance	1234.9	1237.7	0	0
Floor	728.2	743.5	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	159.3	155.8	165.8	165.8
Highest rating	1247.8 2025-09-01	1250.7 2025-09-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1228.2 2025-09-01	1243.5 2025-09-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1247.8 2025-09-01	1250.7 2025-09-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.4	0	0	0
New rating	1234.4	1243.5	1200	1200
Analysis
Rating	1234.9	1243.5	1200	1200
Raw rating	1228.2	1243.5	1200	1200
Weighted rating	1161	1162.6	1200
Weighted performance	1234.9	1237.7	0
K-factor	36	36	36	36
Floor	728.2	743.5	700	700
Max/Min rating change allowed	159.3	155.8	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	1228.2	1243.5	1200	1200
New weighted rating	1167.3	1170.3	1200	1200
New weighted performance	1234.4	1237.3	0	0
Temp new rating	1234.4	1243.5	1200	1200
Temp new rating +/-	-0.4	0	0	0
Final new rating +/-	-0.4	0	0	0
New rating	1234.4	1243.5	1200	1200
New K-factor	36	36	36	36
New floor	728.2	743.5	700	700

Item	Main	Standard
	0	0
	14	14
	26	26
	14	14
	8	8
	0	0
History	62	62

Games since
	Main 40	Standard 40		Rapid 0		Blitz 0
Gender	Female
Age group	U14
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3762		1228		200
Female	872		276		53
U14	711		228		38
U14 Female	198		63		13
Standard
	RSA		Province		Region
Overall	3584		1268		173
Female	820		277		40
U14	690		236		33
U14 Female	195		62		9
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-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	14	9	64.29	121.4	1206.6	1328.1
Standard	14	9	64.29	121.4	1206.6	1328.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	62	24.5	39.52	-89.1	1232.7	1143.6
Standard	62	24.5	39.52	-89.1	1232.7	1143.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1228.2	1243.5	1200	1200
2025-09-01	1228.2	1243.5	1200	1200
2025-08-01	1180.1	1186.7	1200	1200
2025-07-01	1180.1	1186.7	1200	1200
2025-06-01	1180.1	1186.7	1200	1200
2025-05-01	1155.4	1156.9	1200	1200
2025-04-01	1155.4	1156.9	1200	1200
2025-03-01	1155.4	1156.9	1200	1200
2025-02-01	1146.5	1144.4	1200	1200
2025-01-01	1146.5	1144.4	1200	1200
2024-12-01	1154.8	1152.8	1200	1200
2024-11-01	1154.8	1152.8	1200	1200
2024-10-01	1134.3	1131.6	1200	1200
2024-09-01	1091.8	1078	1200	1200
2024-08-01	1091.8	1078	1200	1200
2024-07-01	1091.8	1078	1200	1200
2024-06-01	1116.3	1105.6	1200	1200
2024-08-01	1116.3	1105.6	1200	1200
2024-04-01	1142.5	1143.2	1200	1200
2024-03-01	1142.5	1143.2	1200	1200
2024-02-01	1142.5	1143.2	1200	1200
2024-01-01	1142.5	1143.2	1200	1200
2023-12-01	1142.5	1143.2	1200	1200
2023-11-01	1142.5	1143.2	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	D5 Teams 2025 (U13 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
2	D5 Anker 2025 (U13 Girls)	2025-05-17	2025-05-17	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
3	Ekurhuleni/Springs Open 025 (U14)	2025-02-22	2025-02-22	Standard	Ekurhuleni (GE)	5	4	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	D5 Teams 2025 (U13 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
2	D5 Anker 2025 (U13 Girls)	2025-05-17	2025-05-17	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
3	Ekurhuleni/Springs Open 025 (U14)	2025-02-22	2025-02-22	Standard	Ekurhuleni (GE)	5	4	2	Yes	Analysis
4	Gauteng Inter-Region at UJ 2024 (U12 Girls)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	4	1	Yes	Analysis
5	Gauteng Top Schools 2024 (U11 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
6	Ekurhuleni Trails 3 2024 (U12)	2024-08-24	2024-08-24	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
7	Gauteng Schools Individuals Finals 2024 (U11 Girls)	2024-08-16	2024-08-16	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
8	Ekurhuleni Trails 1 2024 (U12)	2024-06-01	2024-06-01	Standard	Ekurhuleni (GE)	5	2	0	Yes	Analysis
9	Ekurhuleni Open 2024 (C)	2024-04-06	2024-04-06	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
10	2023 Gauteng Top Schools (U13 Girls)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	5	4	Yes	Analysis
11	Gauteng Schools Individual Finals 2023 (U11 Girls)	2023-05-26	2023-05-26	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
12	Ekurhuleni Springs Open 4 March 2023 (D)	2023-03-04	2023-03-04	Standard	Ekurhuleni (GE)	5	4	0.5	Yes	Analysis
13	Ekurhuleni Chess Springs Club Open 2022 (E)	2022-09-03	2022-09-03	Standard	Ekurhuleni (GE)	5	4	1	Yes	Analysis
14	2022 Gauteng Schools Team Championships (U9 Open)	2022-08-27	2022-08-27	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis

#	Games	Start				End
1	4	Tournament Ekurhuleni/Springs Open 025				Tournament D5 Anker 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-05-17	rnd 2	type Standard	result 1
		Opponent Maartens, K (Kaylum)				Opponent van Rooyen, W (Willemien)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2023 Gauteng Top Schools
		date 2023-08-18	rnd 2	type Standard	result 1	date 2023-08-18	rnd 5	type Standard	result 1
		Opponent Mhlongo, N (Noxolo)				Opponent Ramara, K (Kutlwano)
3	3	Tournament D5 Anker 2025				Tournament D5 Teams 2025
		date 2025-05-17	rnd 5	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Ferreira, K (Karlien)				Opponent Hattingh, R (Ruben)

#	Games	Start				End
1	4	Tournament Ekurhuleni/Springs Open 025				Tournament D5 Anker 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-05-17	rnd 2	type Standard	result 1
		Opponent Maartens, K (Kaylum)				Opponent van Rooyen, W (Willemien)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2023 Gauteng Top Schools
		date 2023-08-18	rnd 2	type Standard	result 1	date 2023-08-18	rnd 5	type Standard	result 1
		Opponent Mhlongo, N (Noxolo)				Opponent Ramara, K (Kutlwano)
3	3	Tournament D5 Anker 2025				Tournament D5 Teams 2025
		date 2025-05-17	rnd 5	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Ferreira, K (Karlien)				Opponent Hattingh, R (Ruben)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Ekurhuleni/Springs Open 025				Tournament D5 Anker 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-05-17	rnd 2	type Standard	result 1
		Opponent Maartens, K (Kaylum)				Opponent van Rooyen, W (Willemien)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2023 Gauteng Top Schools
		date 2023-08-18	rnd 2	type Standard	result 1	date 2023-08-18	rnd 5	type Standard	result 1
		Opponent Mhlongo, N (Noxolo)				Opponent Ramara, K (Kutlwano)
3	3	Tournament D5 Anker 2025				Tournament D5 Teams 2025
		date 2025-05-17	rnd 5	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Ferreira, K (Karlien)				Opponent Hattingh, R (Ruben)

#	Games	Start				End
1	4	Tournament Ekurhuleni/Springs Open 025				Tournament D5 Anker 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-05-17	rnd 2	type Standard	result 1
		Opponent Maartens, K (Kaylum)				Opponent van Rooyen, W (Willemien)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2023 Gauteng Top Schools
		date 2023-08-18	rnd 2	type Standard	result 1	date 2023-08-18	rnd 5	type Standard	result 1
		Opponent Mhlongo, N (Noxolo)				Opponent Ramara, K (Kutlwano)
3	3	Tournament D5 Anker 2025				Tournament D5 Teams 2025
		date 2025-05-17	rnd 5	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Ferreira, K (Karlien)				Opponent Hattingh, R (Ruben)

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	Duvenage ,A (Alejandro)	2	1	0	2	1	0	0	0	0	0	0	0
1	Duvenage ,A (Alejandro)	2	1223.6	1223.6	2	1225.6	1223.6	0	0	0	0	0	0
2	Niemann ,T (Taylandre)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Niemann ,T (Taylandre)	2	1223.3	798.3	2	1225.7	798.3	0	0	0	0	0	0
3	Ramara ,K (Kutlwano)	1	1	425	1	1	425	0	0	0	0	0	0
3	Ramara ,K (Kutlwano)	1	1186.1	1611.1	1	1183.2	1611.1	0	0	0	0	0	0
4	Vermeulen ,R (Reinhardt)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Vermeulen ,R (Reinhardt)	1	1196	771	1	1195.2	771	0	0	0	0	0	0
5	Mthembu ,R (Relebohile)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Mthembu ,R (Relebohile)	1	1310.8	885.8	1	1305.9	885.8	0	0	0	0	0	0
6	Malambula ,O (Owethu)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Malambula ,O (Owethu)	1	1288.6	863.6	1	1250	863.6	0	0	0	0	0	0
7	Jacobs ,L (Lillith)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Jacobs ,L (Lillith)	1	1398.4	973.4	1	1391.3	973.4	0	0	0	0	0	0
8	Barkhuizen ,SJ (Simon Jurgens)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Barkhuizen ,SJ (Simon Jurgens)	1	1428	1003	1	1427.5	1003	0	0	0	0	0	0
9	Blaauw ,R (Rianelle)	1	1	425	1	1	425	0	0	0	0	0	0
9	Blaauw ,R (Rianelle)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Masana ,C (Chabalala)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Masana ,C (Chabalala)	1	1200	775	1	1200	775	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Van Der Merwe, A (Adele)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms