Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van der Merwe, M (Mia)

Chess SA id

2120321251

FIDE id

Date of birth

2012-05-03 (U16)

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

Item	Main	Standard	Rapid	Blitz
Rating	1193.3	1192.1	1200	1200
Raw rating	1182.6	1179.5	1200	1200
Weighted rating	1193.3	1192.1	1200	1200
Weighted performance	0	0	0	0
Floor	699.9	699.9	700	700
K-factor	40	40	36	36
Min/Max rating change allowed	170	170.7	165.8	165.8
Highest rating	1199.9 2025-05-22	1199.9 2025-05-22	1200 2025-06-01	1200 2025-06-01
Highest raw rating	1199.9 2025-05-22	1199.9 2025-05-22	1200 2025-06-01	1200 2025-06-01
Highest weighted rating	1199.9 2025-05-22	1199.9 2025-05-22	1200 2025-06-01	1200 2025-06-01
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.1	-1.3	0	0
New rating	1192.3	1190.8	1200	1200
Analysis
Rating	1193.3	1192.1	1200	1200
Raw rating	1182.6	1179.5	1200	1200
Weighted rating	1193.3	1192.1	1200
Weighted performance	0	0	0
K-factor	40	40	36	36
Floor	699.9	699.9	700	700
Max/Min rating change allowed	170	170.7	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	1182.6	1179.5	1200	1200
New weighted rating	1192.3	1190.8	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1192.3	1190.8	1200	1200
Temp new rating +/-	-1.1	-1.3	0	0
Final new rating +/-	-1.1	-1.3	0	0
New rating	1192.3	1190.8	1200	1200
New K-factor	40	40	36	36
New floor	699.9	699.9	700	700

Item	Main	Standard
	0	0
	6	6
	0	0
	0	0
	0	0
	0	0
History	6	6

Games since
	Main 6	Standard 6		Rapid 0		Blitz 0
Gender	Female
Age group	U14
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
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	6	1	16.67	-283.3	1204.2	920.9
Standard	6	1	16.67	-283.3	1204.2	920.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	6	1	16.67	-283.3	1204.2	920.9
Standard	6	1	16.67	-283.3	1204.2	920.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1182.6	1179.5	1200	1200
2025-11-30	1182.6	1179.5	1200	1200
2025-11-01	1182.6	1179.5	1200	1200
2025-09-30	1182.6	1179.5	1200	1200
2025-09-01	1182.6	1179.5	1200	1200
2025-08-01	1199.6	1199.5	1200	1200
2025-07-01	1199.4	1199.2	1200	1200
2025-06-01	1195.9	1195.1	1200	1200
2025-05-01	1200	1200	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	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	D5 Teams 2025 (U13 Girls)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	3	3	1	Yes	Analysis
2	D5 Anker 2025 (U13 Girls)	2025-05-17	2025-05-17	Standard	Ekurhuleni (GE)	5	3	0	Yes	Analysis

#	Games	Start				End
1	1	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Janse Van Vuuren, D (Demicke)				Opponent Janse Van Vuuren, D (Demicke)

#	Games	Start				End
1	1	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Janse Van Vuuren, D (Demicke)				Opponent Janse Van Vuuren, D (Demicke)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Janse Van Vuuren, D (Demicke)				Opponent Janse Van Vuuren, D (Demicke)

#	Games	Start				End
1	1	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Janse Van Vuuren, D (Demicke)				Opponent Janse Van Vuuren, D (Demicke)

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	Coetzee ,S (Simone)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Coetzee ,S (Simone)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Gcanga ,S (Sisipho)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Gcanga ,S (Sisipho)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Geel ,M (Mieke)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Geel ,M (Mieke)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Melles ,S (Sidona)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Melles ,S (Sidona)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Ebersohn ,C (Chrisne)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Ebersohn ,C (Chrisne)	1	1247.4	822.4	1	1256.8	822.4	0	0	0	0	0	0
6	Janse Van Vuuren ,D (Demicke)	1	1	425	1	1	425	0	0	0	0	0	0
6	Janse Van Vuuren ,D (Demicke)	1	1178	1603	1	1177.1	1603	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, M (Mia)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms