Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van der Westhuizen, J (Joanne)

Chess SA id

2140316733

FIDE id

Date of birth

2014-10-11 (U12)

Gender

Female

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1233.1	1232.4	1207.2	1200
Raw rating	1233.1	1232.4	1207.2	1200
Weighted rating	1218.1	1217.7	1204.3	1200
Weighted performance	0	0	0	0
Floor	733.1	732.4	707.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	158.2	158.3	164.1	165.8
Highest rating	1233.1 2025-04-01	1232.4 2025-04-01	1207.2 2025-03-01	1200 2025-03-01
Highest raw rating	1233.1 2025-04-01	1232.4 2025-04-01	1207.2 2025-03-01	1200 2025-03-01
Highest weighted rating	1212.1 2025-08-01	1211.9 2025-08-01	1203.1 2025-08-01	1200 2025-03-01
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	0	0	0	0
New rating	1233.1	1232.4	1207.2	1200
Analysis
Rating	1233.1	1232.4	1207.2	1200
Raw rating	1233.1	1232.4	1207.2	1200
Weighted rating	1218.1	1217.7	1204.3
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	733.1	732.4	707.2	700
Max/Min rating change allowed	158.2	158.3	164.1	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	1233.1	1232.4	1207.2	1200
New weighted rating	1219.9	1219.4	1204.7	1200
New weighted performance	0	0	0	0
Temp new rating	1233.1	1232.4	1207.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1233.1	1232.4	1207.2	1200
New K-factor	36	36	36	36
New floor	733.1	732.4	707.2	700

Item	Main	Standard	Rapid
	0	0	0
	9	5	4
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	9	5	4

Games since
	Main 9	Standard 5		Rapid 4		Blitz 0
Gender	Female
Age group	U12
Region	West Coast (WCU)
Province	Western Cape (WC)
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	9	5	55.56	47.2	1248.3	1295.5
Standard	5	3	60	85	1292.8	1377.8
Rapid	4	2	50	0	1192.6	1192.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	9	5	55.56	47.2	1248.3	1295.5
Standard	5	3	60	85	1292.8	1377.8
Rapid	4	2	50	0	1192.6	1192.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1233.1	1232.4	1207.2	1200
2025-09-30	1233.1	1232.4	1207.2	1200
2025-09-01	1233.1	1232.4	1207.2	1200
2025-08-01	1233.1	1232.4	1207.2	1200
2025-07-01	1233.1	1232.4	1207.2	1200
2025-06-01	1233.1	1232.4	1207.2	1200
2025-05-01	1233.1	1232.4	1207.2	1200
2025-04-01	1233.1	1232.4	1207.2	1200
2025-03-01	1199.9	1200	1207.2	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
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	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
2024-01-01	1200	1200	1200	1200
2023-12-01	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	Western Cape Schools Individual Championship 2025 (U11 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	0	0	No	Analysis
2	West Coast Schools Chess Prestige 2025 (U11 Girls)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	5	3	Yes	Analysis
3	Upper West Coast Presrige 2025 (U11Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools Individual Championship 2025 (U11 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	0	0	No	Analysis
2	West Coast Schools Chess Prestige 2025 (U11 Girls)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	5	3	Yes	Analysis
3	Upper West Coast Presrige 2025 (U11Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Upper West Coast Presrige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-02-22	rnd 5	type Rapid	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Klaase, N (Nizeche)				Opponent Swartz, U (Umaree)
2	1	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 6	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 1
		Opponent Kleynhans, M (Miecke)				Opponent Kleynhans, M (Miecke)
3	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Blaauw, C (Charne)				Opponent Blaauw, C (Charne)

#	Games	Start				End
1	2	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Lukas, I (Isune)				Opponent Swartz, U (Umaree)
2	1	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 6	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 1
		Opponent Kleynhans, M (Miecke)				Opponent Kleynhans, M (Miecke)

#	Games	Start				End
1	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Klaase, N (Nizeche)				Opponent Klaase, N (Nizeche)
2	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Blaauw, C (Charne)				Opponent Blaauw, C (Charne)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Upper West Coast Presrige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-02-22	rnd 5	type Rapid	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Klaase, N (Nizeche)				Opponent Swartz, U (Umaree)
2	1	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 6	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 1
		Opponent Kleynhans, M (Miecke)				Opponent Kleynhans, M (Miecke)
3	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Blaauw, C (Charne)				Opponent Blaauw, C (Charne)

#	Games	Start				End
1	2	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Lukas, I (Isune)				Opponent Swartz, U (Umaree)
2	1	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 6	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 1
		Opponent Kleynhans, M (Miecke)				Opponent Kleynhans, M (Miecke)

#	Games	Start				End
1	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Klaase, N (Nizeche)				Opponent Klaase, N (Nizeche)
2	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Blaauw, C (Charne)				Opponent Blaauw, C (Charne)

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	Van Wyk ,F (Faith)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Van Wyk ,F (Faith)	1	1515.8	1090.8	1	1473.3	1090.8	0	0	0	0	0	0
2	Kleynhans ,M (Miecke)	1	1	425	1	1	425	0	0	0	0	0	0
2	Kleynhans ,M (Miecke)	1	1219	1644	1	1268.9	1644	0	0	0	0	0	0
3	Swartz ,U (Umaree)	1	1	425	1	1	425	0	0	0	0	0	0
3	Swartz ,U (Umaree)	1	1300.4	1725.4	1	1247.9	1725.4	0	0	0	0	0	0
4	Lukas ,I (Isune)	1	1	425	1	1	425	0	0	0	0	0	0
4	Lukas ,I (Isune)	1	1235.3	1660.3	1	1200	1660.3	0	0	0	0	0	0
5	Makamba ,J (Jaylin)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Makamba ,J (Jaylin)	1	1193.5	768.5	1	1188.4	768.5	0	0	0	0	0	0
6	Avontuur ,A (Al-Meeche)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Avontuur ,A (Al-Meeche)	1	1233.2	808.2	0	0	0	1	1328.2	808.2	0	0	0
7	Klaase ,N (Nizeche)	1	1	425	0	0	0	1	1	425	0	0	0
7	Klaase ,N (Nizeche)	1	1174.5	1599.5	0	0	0	1	1189.5	1599.5	0	0	0
8	Witbooi ,A (Ava)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Witbooi ,A (Ava)	1	1197.7	772.7	0	0	0	1	1211	772.7	0	0	0
9	Blaauw ,C (Charne)	1	1	425	0	0	0	1	1	425	0	0	0
9	Blaauw ,C (Charne)	1	1164.8	1589.8	0	0	0	1	1227	1589.8	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 Westhuizen, J (Joanne)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms