Chess South Africa Ratings Database

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Personal

Van Der Merwe, A (Aivah Lexi)

Chess SA id

2150300153

FIDE id

Date of birth

2015-07-18 (U12)

Gender

Female

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-21

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1130.4	1119.2	1200	1200
Raw rating	1130.4	1119.2	1200	1200
Weighted rating	1128.1	1116.5	1200	1200
Weighted performance	827.4	829.2	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	183.1	186	165.8	165.8
Highest rating	1200 2024-03-01	1200 2024-03-01	1200 2024-04-01	1200 2024-04-01
Highest raw rating	1200 2024-03-01	1200 2024-03-01	1200 2024-04-01	1200 2024-04-01
Highest weighted rating	1200 2024-03-01	1200 2024-03-01	1200 2024-04-01	1200 2024-04-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-04-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1130.4	1119.2	1200	1200
Analysis
Rating	1130.4	1119.2	1200	1200
Raw rating	1130.4	1119.2	1200	1200
Weighted rating	1128.1	1116.5	1200
Weighted performance	827.4	829.2	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	183.1	186	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	1130.4	1119.2	1200	1200
New weighted rating	1127.2	1115.5	1200	1200
New weighted performance	827.1	828.9	0	0
Temp new rating	1130.4	1119.2	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1130.4	1119.2	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	5	5
	18	18
	0	0
	0	0
	0	0
History	23	23

Games since
	Main 23	Standard 23		Rapid 0		Blitz 0
Gender	Female
Age group	U12
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 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	5	1	20	-255	1222.9	967.9
Standard	5	1	20	-255	1222.9	967.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	23	5.5	23.91	-221.7	1192.4	970.6
Standard	23	5.5	23.91	-221.7	1192.4	970.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1130.4	1119.2	1200	1200
2025-09-01	1130.4	1119.2	1200	1200
2025-08-01	1130.4	1119.2	1200	1200
2025-07-01	1130.1	1118.9	1200	1200
2025-06-01	1138.2	1128.2	1200	1200
2025-05-01	1138.2	1128.2	1200	1200
2025-04-01	1138.2	1128.2	1200	1200
2025-03-01	1138.2	1128.2	1200	1200
2025-02-01	1134.9	1124.5	1200	1200
2025-01-01	1066.1	1045.6	1200	1200
2024-12-01	1066.1	1045.6	1200	1200
2024-11-01	1066.1	1045.6	1200	1200
2024-10-01	1115.6	1101.6	1200	1200
2024-09-01	1115.6	1101.6	1200	1200
2024-08-01	1141.2	1130.8	1200	1200
2024-07-01	1141.2	1130.8	1200	1200
2024-06-01	1141.2	1130.8	1200	1200
2024-08-01	1141.2	1130.8	1200	1200
2024-04-01	1178.1	1174	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	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	LS Vryheidsmonument Chess Open 21 Jun 2025 (E)	2025-06-21	2025-06-21	Standard	Sedibeng (GSV)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	LS Vryheidsmonument Chess Open 21 Jun 2025 (E)	2025-06-21	2025-06-21	Standard	Sedibeng (GSV)	5	5	1	Yes	Analysis
2	Gauteng Top Schools 2024 (U11 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	4	0	Yes	Analysis
3	Sedibeng East D7 Teams Trials 2024 (U11)	2024-08-03	2024-08-03	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
4	HS Drie Riviere Chess Open Section 2024 (E)	2024-03-09	2024-03-09	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
5	NG Kerk Vanderbijlpark Suid 2024 (E)	2024-02-24	2024-02-24	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis

#	Games	Start				End
1	1	Tournament LS Vryheidsmonument Chess Open 21 Jun 2025				Tournament LS Vryheidsmonument Chess Open 21 Jun 2025
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 3	type Standard	result 1
		Opponent Nolan, F (Fillipa)				Opponent Nolan, F (Fillipa)
2	1	Tournament Sedibeng East D7 Teams Trials 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-08-03	rnd 5	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Ndhlebe, W (Will)				Opponent Ndhlebe, W (Will)
3	1	Tournament HS Drie Riviere Chess Open Section 2024				Tournament HS Drie Riviere Chess Open Section 2024
		date 2024-03-09	rnd 5	type Standard	result 0.5	date 2024-03-09	rnd 5	type Standard	result 0.5
		Opponent Strydom, G (Graceson)				Opponent Strydom, G (Graceson)

#	Games	Start				End
1	1	Tournament LS Vryheidsmonument Chess Open 21 Jun 2025				Tournament LS Vryheidsmonument Chess Open 21 Jun 2025
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 3	type Standard	result 1
		Opponent Nolan, F (Fillipa)				Opponent Nolan, F (Fillipa)
2	1	Tournament Sedibeng East D7 Teams Trials 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-08-03	rnd 5	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Ndhlebe, W (Will)				Opponent Ndhlebe, W (Will)
3	1	Tournament HS Drie Riviere Chess Open Section 2024				Tournament HS Drie Riviere Chess Open Section 2024
		date 2024-03-09	rnd 5	type Standard	result 0.5	date 2024-03-09	rnd 5	type Standard	result 0.5
		Opponent Strydom, G (Graceson)				Opponent Strydom, G (Graceson)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament LS Vryheidsmonument Chess Open 21 Jun 2025				Tournament LS Vryheidsmonument Chess Open 21 Jun 2025
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 3	type Standard	result 1
		Opponent Nolan, F (Fillipa)				Opponent Nolan, F (Fillipa)
2	1	Tournament Sedibeng East D7 Teams Trials 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-08-03	rnd 5	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Ndhlebe, W (Will)				Opponent Ndhlebe, W (Will)
3	1	Tournament HS Drie Riviere Chess Open Section 2024				Tournament HS Drie Riviere Chess Open Section 2024
		date 2024-03-09	rnd 3	type Standard	result 1	date 2024-03-09	rnd 3	type Standard	result 1
		Opponent Madibana, M (Mohau)				Opponent Madibana, M (Mohau)

#	Games	Start				End
1	1	Tournament LS Vryheidsmonument Chess Open 21 Jun 2025				Tournament LS Vryheidsmonument Chess Open 21 Jun 2025
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 3	type Standard	result 1
		Opponent Nolan, F (Fillipa)				Opponent Nolan, F (Fillipa)
2	1	Tournament Sedibeng East D7 Teams Trials 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-08-03	rnd 5	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Ndhlebe, W (Will)				Opponent Ndhlebe, W (Will)
3	1	Tournament HS Drie Riviere Chess Open Section 2024				Tournament HS Drie Riviere Chess Open Section 2024
		date 2024-03-09	rnd 3	type Standard	result 1	date 2024-03-09	rnd 3	type Standard	result 1
		Opponent Madibana, M (Mohau)				Opponent Madibana, M (Mohau)

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	Madibana ,M (Mohau)	2	2	425	2	2	425	0	0	0	0	0	0
1	Madibana ,M (Mohau)	2	1117.1	1542.1	2	1117.1	1542.1	0	0	0	0	0	0
2	Botha ,M (Marius)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Botha ,M (Marius)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Sekoai ,R (Rorisang)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Sekoai ,R (Rorisang)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Van Staden ,J (Jayden)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Van Staden ,J (Jayden)	1	1247.1	822.1	1	1254.7	822.1	0	0	0	0	0	0
5	Madibana ,M (Mapula)	1	1	425	1	1	425	0	0	0	0	0	0
5	Madibana ,M (Mapula)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Kruger ,J (JayC)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Kruger ,J (JayC)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Tlou ,LI (Lefa Isaac)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Tlou ,LI (Lefa Isaac)	1	1069.5	644.5	1	1065.4	644.5	0	0	0	0	0	0
8	Botha ,L (Lee-Ann Elizabeth)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Botha ,L (Lee-Ann Elizabeth)	1	1172.8	747.8	1	1167.6	747.8	0	0	0	0	0	0
9	Martin ,S (Sebastian)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Martin ,S (Sebastian)	1	1315.2	890.2	1	1328	890.2	0	0	0	0	0	0
10	Ndhlebe ,W (Will)	1	1	425	1	1	425	0	0	0	0	0	0
10	Ndhlebe ,W (Will)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Van Der Merwe, A (Aivah Lexi)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms