Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Westhuizen, C (Courtney)

Chess SA id

209078595

FIDE id

Date of birth

2009-01-01 (U18)

Gender

Female

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

11.5

Junior GPX Points

1031.3

Item	Main	Standard	Rapid	Blitz
Rating	1248.5	1176.4	1304.3	500
Raw rating	1236.9	1154	1304.3	500
Weighted rating	1248.5	1176.4	1260.1	500
Weighted performance	966.5	786.9	1042.5	0
Floor	782.6	711.9	804.3	500
K-factor	36	36	36	40
Min/Max rating change allowed	157.3	177	142.9	449.5
Highest rating	1495.4 2018-03-01	1495 2018-03-01	1304.3 2025-09-01	1200 2024-03-01
Highest raw rating	1282.6 2024-06-01	1211.9 2024-03-01	1304.3 2025-09-01	500 2024-03-01
Highest weighted rating	1282.6 2024-08-01	1211.9 2024-08-01	1248.6 2025-09-01	500 2024-11-01
Highest weighted performance	1495.4 2025-08-01	1495 2018-03-01	1287 2020-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.1	-2.4	0	0
New rating	1247.4	1173.9	1304.3	500
Analysis
Rating	1248.5	1176.4	1304.3	500
Raw rating	1236.9	1154	1304.3	500
Weighted rating	1248.5	1176.4	1260.1
Weighted performance	966.5	786.9	1042.5
K-factor	36	36	36	40
Floor	782.6	711.9	804.3	500
Max/Min rating change allowed	157.3	177	142.9	449.5
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	1236.9	1154	1304.3	500
New weighted rating	1247.4	1173.9	1265.2	500
New weighted performance	960.1	780.8	1034.8	0
Temp new rating	1247.4	1173.9	1304.3	500
Temp new rating +/-	-1.1	-2.4	0	0
Final new rating +/-	-1.1	-2.4	0	0
New rating	1247.4	1173.9	1304.3	500
New K-factor	36	36	36	40
New floor	782.6	711.9	804.3	500

Item	Main	Standard	Rapid
	0	0	0
	15	8	7
	9	4	5
	9	0	9
	25	21	4
	11	0	11
History	147	90	57

Games since
	Main 24	Standard 12		Rapid 12		Blitz 0
Gender	Female
Age group	U18
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 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	15	6	40	-85	1267.4	1182.4
Standard	8	1	12.5	-318.8	1308.7	989.9
Rapid	7	5	71.43	182.1	1220.1	1402.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	128	66	51.56	13.3	1188.9	1202.2
Standard	76	34	44.74	-44.7	1175.4	1130.6
Rapid	52	32	61.54	98.1	1208.8	1306.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1236.9	1154	1304.3	500
2025-09-30	1236.9	1154	1304.3	500
2025-09-01	1271.2	1184.2	1304.3	500
2025-08-01	1261	1184.2	1287	500
2025-07-01	1248.8	1184.2	1250.1	500
2025-06-01	1248.8	1184.2	1250.1	500
2025-05-01	1248.8	1184.2	1250.1	500
2025-04-01	1246.5	1182.4	1250.1	500
2025-03-01	1253.8	1186.2	1250.1	500
2025-02-01	1248	1184.3	1250.4	500
2025-01-01	1227.9	1147.8	1250.4	500
2024-12-01	1227.9	1147.8	1250.4	500
2024-11-01	1227.9	1147.8	1250.4	500
2024-10-01	1227.9	1147.8	1250.4	500
2024-09-01	1227.9	1147.8	1250.4	500
2024-08-01	1282.6	1211.9	1250.4	500
2024-07-01	1282.6	1211.9	1250.4	500
2024-09-01	1282.6	1211.9	1250.4	500
2024-05-01	1255	1211.9	1176.8	500
2024-04-01	1255	1211.9	1176.8	500
2024-03-01	1255	1211.9	1176.8	500
2024-02-01	1255	1211.9	1176.8	500
2024-01-01	1255	1211.9	1176.8	500
2023-12-01	1255	1211.9	1176.8	500

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 - Top Schools 2025 (U17)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	3	0	Yes	Analysis
2	Pedro Booyse Top Schools 2025 (U17)	2025-08-23	2025-08-23	Rapid	West Coast (WCU)	6	1	1	Yes	Analysis
3	Upper West Coast Top Schools 2025 (U17+U19)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	1	1	Yes	Analysis
4	West Coast Schools Chess Prestige 2025 (U17 Girls)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	5	5	1	Yes	Analysis
5	Upper West Coast Presrige 2025 (Senior Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U17)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	3	0	Yes	Analysis
2	Pedro Booyse Top Schools 2025 (U17)	2025-08-23	2025-08-23	Rapid	West Coast (WCU)	6	1	1	Yes	Analysis
3	Upper West Coast Top Schools 2025 (U17+U19)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	1	1	Yes	Analysis
4	West Coast Schools Chess Prestige 2025 (U17 Girls)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	5	5	1	Yes	Analysis
5	Upper West Coast Presrige 2025 (Senior Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
6	Pedro Booyse Top Schools Championships 2024 (U15)	2024-07-20	2024-07-20	Standard	West Coast (WCU)	5	4	0	Yes	Analysis
7	Bo-Weskus Skole Skaak Top Skole 2024 (O15)	2024-05-11	2024-05-11	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
8	Upper West Coast Top Schools Championship 2023 (High School)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
9	Bo-Weskus Skole Prestige 2023 (Ho�rskool Dogters)	2023-02-11	2023-02-11	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
10	Western Cape Top Schools 2022 (U13 Girls)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
11	Pedro Booyse Top Schools 2022 (U11+U13 Girls)	2022-07-23	2022-07-23	Standard	West Coast (WCU)	6	4	2	Yes	Analysis
12	Bo-Weskus Top Skole 2022 (O13)	2022-06-11	2022-06-11	Rapid	West Coast (WCU)	5	4	3	Yes	Analysis
13	Western Cape Schools 2022 (U13 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
14	West Coast Schools Prestige 2022 (U13 Girls)	2022-02-19	2022-02-19	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
15	West Coast Primary Schools Prestige 2021 (U13 Girls)	2021-09-18	2021-09-18	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
16	Upper West Coast 2021 (U13)	2021-09-04	2021-09-04	Rapid	West Coast (WCU)	7	6	4	Yes	Analysis
17	West Coast Schools Prestige 2020 (U11 Girls)	2020-03-07	2020-03-07	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
18	Bo-Weskus Skole Prestige 2020 (O11 Dogters)	2020-02-15	2020-02-15	Standard	West Coast (WCU)	6	6	5	Yes	Analysis
19	2019 South African Top Schools Team Championships (U13+U15 Girls)	2020-01-10	2020-01-11	Standard	4 Knights (4K)	5	4	1	Yes	Analysis
20	Western Cape Top Schools 2019 (U11 Girls)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
21	Western Cape Schools Individuals 2019 (U11 Girls)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	3	Yes	Analysis
22	West Coast Open 2019 (C)	2019-04-27	2019-04-27	Standard	West Coast (WCU)	5	0	0	No	Analysis
23	Weskus Skole Prestige Skaak Kampioenskappe 2019 (O11 Dogters)	2019-03-02	2019-04-06	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
24	Bo-Weskus Skole Skaak Prestige 2019 (O11 Dogters)	2019-02-16	2019-02-16	Rapid	West Coast (WCU)	7	7	4	Yes	Analysis
25	Western Cape Kings & Queens 2018 (Girls)	2018-10-20	2018-10-20	Rapid	Cape Winelands (WCW)	5	4	2	Yes	Analysis
26	Western Cape Top Schools 2018 (U9+U11 Girls)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	4	0	Yes	Analysis
27	Western Cape Schools Individuals 2018 (U9 Girls)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	2	Yes	Analysis
28	West Coast Schools Prestige Individual Championship 2018 (U9 Girls)	2018-03-10	2018-03-24	Standard	West Coast (WCU)	6	6	5	Yes	Analysis

#	Games	Start				End
1	5	Tournament West Coast Schools Prestige 2020				Tournament Upper West Coast 2021
		date 2020-03-07	rnd 5	type Rapid	result 1	date 2021-09-04	rnd 5	type Rapid	result 1
		Opponent Basson, Z (Ziah)				Opponent De Bruin, E (Elrise)
2	5	Tournament Bo-Weskus Skole Prestige 2020				Tournament West Coast Schools Prestige 2020
		date 2020-02-15	rnd 5	type Standard	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Van Schalkwyk, M (Mia-Leigh Che)				Opponent Meyer, G (Gracia)
3	4	Tournament Western Cape Schools 2022				Tournament Bo-Weskus Top Skole 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-06-11	rnd 4	type Rapid	result 1
		Opponent Pienaar, F (Francisca)				Opponent Fourie, A (Albert)

#	Games	Start				End
1	6	Tournament Bo-Weskus Skole Prestige 2020				Tournament West Coast Schools Prestige 2022
		date 2020-02-15	rnd 5	type Standard	result 1	date 2022-02-19	rnd 4	type Standard	result 1
		Opponent Van Schalkwyk, M (Mia-Leigh Che)				Opponent Van Staden, L (Laurenzia)
2	3	Tournament Bo-Weskus Skole Prestige 2020				Tournament Bo-Weskus Skole Prestige 2020
		date 2020-02-15	rnd 1	type Standard	result 1	date 2020-02-15	rnd 3	type Standard	result 1
		Opponent Ruiters, S (Shakirah)				Opponent Willemse, J (Jadiah)
3	3	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-10	rnd 1	type Standard	result 1	date 2018-03-10	rnd 3	type Standard	result 1
		Opponent Sauls, J (Jada)				Opponent Beukes, K (Kelly)

#	Games	Start				End
1	5	Tournament West Coast Schools Prestige 2020				Tournament Upper West Coast 2021
		date 2020-03-07	rnd 5	type Rapid	result 1	date 2021-09-04	rnd 5	type Rapid	result 1
		Opponent Basson, Z (Ziah)				Opponent De Bruin, E (Elrise)
2	4	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament West Coast Schools Prestige 2020
		date 2019-02-16	rnd 7	type Rapid	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Roothman, R (Risa)				Opponent Meyer, G (Gracia)
3	3	Tournament Bo-Weskus Skole Skaak Top Skole 2024				Tournament Upper West Coast Presrige 2025
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Van Zyl, A (Abum)				Opponent Nel, R (Roxaan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament West Coast Schools Prestige 2020				Tournament Upper West Coast 2021
		date 2020-03-07	rnd 5	type Rapid	result 1	date 2021-09-04	rnd 5	type Rapid	result 1
		Opponent Basson, Z (Ziah)				Opponent De Bruin, E (Elrise)
2	5	Tournament Bo-Weskus Skole Prestige 2020				Tournament West Coast Schools Prestige 2020
		date 2020-02-15	rnd 5	type Standard	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Van Schalkwyk, M (Mia-Leigh Che)				Opponent Meyer, G (Gracia)
3	4	Tournament Western Cape Schools 2022				Tournament Bo-Weskus Top Skole 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-06-11	rnd 4	type Rapid	result 1
		Opponent Pienaar, F (Francisca)				Opponent Fourie, A (Albert)

#	Games	Start				End
1	6	Tournament Bo-Weskus Skole Prestige 2020				Tournament West Coast Schools Prestige 2022
		date 2020-02-15	rnd 5	type Standard	result 1	date 2022-02-19	rnd 4	type Standard	result 1
		Opponent Van Schalkwyk, M (Mia-Leigh Che)				Opponent Van Staden, L (Laurenzia)
2	3	Tournament Bo-Weskus Skole Prestige 2020				Tournament Bo-Weskus Skole Prestige 2020
		date 2020-02-15	rnd 1	type Standard	result 1	date 2020-02-15	rnd 3	type Standard	result 1
		Opponent Ruiters, S (Shakirah)				Opponent Willemse, J (Jadiah)
3	3	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-10	rnd 1	type Standard	result 1	date 2018-03-10	rnd 3	type Standard	result 1
		Opponent Sauls, J (Jada)				Opponent Beukes, K (Kelly)

#	Games	Start				End
1	5	Tournament West Coast Schools Prestige 2020				Tournament Upper West Coast 2021
		date 2020-03-07	rnd 5	type Rapid	result 1	date 2021-09-04	rnd 5	type Rapid	result 1
		Opponent Basson, Z (Ziah)				Opponent De Bruin, E (Elrise)
2	4	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament West Coast Schools Prestige 2020
		date 2019-02-16	rnd 7	type Rapid	result 1	date 2020-03-07	rnd 3	type Rapid	result 1
		Opponent Roothman, R (Risa)				Opponent Meyer, G (Gracia)
3	3	Tournament Bo-Weskus Skole Skaak Top Skole 2024				Tournament Upper West Coast Presrige 2025
		date 2024-05-11	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Van Zyl, A (Abum)				Opponent Nel, R (Roxaan)

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	De Bruin ,E (Elrise)	7	3	-60.7	5	2	-85	2	1	0	0	0	0
1	De Bruin ,E (Elrise)	7	1231	1170.3	5	1186	1146	2	1237.4	1231	0	0	0
2	Van Zyl ,M (Mea)	7	0	-425	2	0	-425	5	0	-425	0	0	0
2	Van Zyl ,M (Mea)	7	1329.3	904.3	2	1260.4	904.3	5	1226.1	904.3	0	0	0
3	Beukes ,K (Kelsey)	5	2	-85	3	1	-141.7	2	1	0	0	0	0
3	Beukes ,K (Kelsey)	5	1165.5	1080.5	3	1161.1	1023.9	2	1142.8	1165.5	0	0	0
4	Sauls ,J (Jada)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
4	Sauls ,J (Jada)	3	1208.4	1066.8	3	1202.4	1066.8	0	0	0	0	0	0
5	Pienaar ,F (Francisca)	2	2	425	2	2	425	0	0	0	0	0	0
5	Pienaar ,F (Francisca)	2	1139.7	1564.7	2	1118.5	1564.7	0	0	0	0	0	0
6	Mqadi ,O (Olethiwe)	2	1	0	2	1	0	0	0	0	0	0	0
6	Mqadi ,O (Olethiwe)	2	1153.7	1153.7	2	1128.8	1153.7	0	0	0	0	0	0
7	Pienaar ,F (Francisca)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Pienaar ,F (Francisca)	2	1243.5	818.5	2	1201.6	818.5	0	0	0	0	0	0
8	Coetzee ,L (Leigh-Ann)	2	2	425	2	2	425	0	0	0	0	0	0
8	Coetzee ,L (Leigh-Ann)	2	1148.6	1573.6	2	1200	1573.6	0	0	0	0	0	0
9	Willemse ,J (Jadiah)	2	2	425	2	2	425	0	0	0	0	0	0
9	Willemse ,J (Jadiah)	2	1183.3	1608.3	2	1205.6	1608.3	0	0	0	0	0	0
10	Pieters ,A (Astrolita)	2	1	0	1	0	-425	1	1	425	0	0	0
10	Pieters ,A (Astrolita)	2	1202.1	1202.1	1	1200	777.1	1	1158.4	1627.1	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, C (Courtney)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms