Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Westhuizen, J (Jack)

Chess SA id

1130301080

FIDE id

Date of birth

2013-01-02 (U14)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-12-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1396.4	1387.5	1200	1200
Raw rating	1396.4	1387.5	1200	1200
Weighted rating	1381.4	1372.8	1200	1200
Weighted performance	1184.8	1181.5	0	0
Floor	931.1	922.7	700	700
K-factor	32	32	36	36
Min/Max rating change allowed	125.3	126.9	165.8	165.8
Highest rating	1586.8 2024-03-01	1520 2024-03-01	1200 2024-04-01	1200 2024-04-01
Highest raw rating	1431.1 2024-07-01	1422.7 2024-07-01	1200 2024-04-01	1200 2024-04-01
Highest weighted rating	1431.1 2024-10-01	1422.7 2024-10-01	1200 2024-04-01	1200 2024-04-01
Highest weighted performance	1586.8 2024-03-01	1520 2024-03-01	1200 2024-04-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1396.4	1387.5	1200	1200
Analysis
Rating	1396.4	1387.5	1200	1200
Raw rating	1396.4	1387.5	1200	1200
Weighted rating	1381.4	1372.8	1200
Weighted performance	1184.8	1181.5	0
K-factor	32	32	36	36
Floor	931.1	922.7	700	700
Max/Min rating change allowed	125.3	126.9	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	1396.4	1387.5	1200	1200
New weighted rating	1385.3	1376.5	1200	1200
New weighted performance	1176.8	1173.5	0	0
Temp new rating	1396.4	1387.5	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1396.4	1387.5	1200	1200
New K-factor	32	32	36	36
New floor	931.1	922.7	700	700

Item	Main	Standard
	0	0
	0	0
	40	40
	0	0
	0	0
	0	0
History	40	40

Games since
	Main 40	Standard 40		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	2221		780		245
Male	1808		622		200
U14	358		121		35
U14 Male	261		84		23
Standard
	RSA		Province		Region
Overall	2233		834		254
Male	1814		672		206
U14	373		136		38
U14 Male	272		95		26
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	40	26.5	66.25	138.1	1272.9	1411
Standard	40	26.5	66.25	138.1	1272.9	1411
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1396.4	1387.5	1200	1200
2025-09-30	1396.4	1387.5	1200	1200
2025-09-01	1396.4	1387.5	1200	1200
2025-08-01	1396.4	1387.5	1200	1200
2025-07-01	1396.4	1387.5	1200	1200
2025-06-01	1396.4	1387.5	1200	1200
2025-05-01	1396.4	1387.5	1200	1200
2025-04-01	1396.4	1387.5	1200	1200
2025-03-01	1396.4	1387.5	1200	1200
2025-02-01	1396.4	1387.5	1200	1200
2025-01-01	1396.4	1387.5	1200	1200
2024-12-01	1372.3	1359.3	1200	1200
2024-11-01	1372.3	1359.3	1200	1200
2024-10-01	1372.3	1359.3	1200	1200
2024-09-01	1372.3	1359.3	1200	1200
2024-08-01	1431.1	1422.7	1200	1200
2024-07-01	1431.1	1422.7	1200	1200
2024-09-01	1301.3	1303.9	1200	1200
2024-05-01	1274.4	1274	1200	1200
2024-04-01	1274.4	1274	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

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	Gauteng Inter-Region at UJ 2024 (U12 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
2	JMC Closed 2024 (C)	2024-08-09	2024-08-11	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
3	Fourth Knight Riders Juniors Open Chess Tournament 204 (C)	2024-08-03	2024-08-03	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
4	Second Knight Riders Juniors Open Chess Tournament 2024 (C)	2024-06-08	2024-06-08	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
5	JMC Trinityhouse Little Falls 2024 (D)	2024-06-02	2024-06-02	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
6	JMC Crawford International Sandton 2024 (D)	2024-05-11	2024-05-11	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
7	JMC Helpmekaar Kollege Tournament 2024 (D)	2024-05-04	2024-05-04	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
8	1st Knights Open Tournament 2024 (D)	2024-03-23	2024-03-23	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis

#	Games	Start				End
1	5	Tournament JMC Crawford International Sandton 2024				Tournament JMC Trinityhouse Little Falls 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-06-02	rnd 3	type Standard	result 1
		Opponent Petersen, F (Farah)				Opponent Bioto, J (Jael)
2	4	Tournament 1st Knights Open Tournament 2024				Tournament JMC Helpmekaar Kollege Tournament 2024
		date 2024-03-23	rnd 5	type Standard	result 1	date 2024-05-04	rnd 3	type Standard	result 1
		Opponent Pillay, J (Joshua)				Opponent Chikwava, R (Ronald)
3	3	Tournament Fourth Knight Riders Juniors Open Chess Tournament 204				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Tshabalala, H (Happy)				Opponent Zulu, T (Thandoluhle)

#	Games	Start				End
1	5	Tournament JMC Crawford International Sandton 2024				Tournament JMC Trinityhouse Little Falls 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-06-02	rnd 3	type Standard	result 1
		Opponent Petersen, F (Farah)				Opponent Bioto, J (Jael)
2	4	Tournament 1st Knights Open Tournament 2024				Tournament JMC Helpmekaar Kollege Tournament 2024
		date 2024-03-23	rnd 5	type Standard	result 1	date 2024-05-04	rnd 3	type Standard	result 1
		Opponent Pillay, J (Joshua)				Opponent Chikwava, R (Ronald)
3	3	Tournament Fourth Knight Riders Juniors Open Chess Tournament 204				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Tshabalala, H (Happy)				Opponent Zulu, T (Thandoluhle)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Fourth Knight Riders Juniors Open Chess Tournament 204				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Tshabalala, H (Happy)				Opponent Zulu, T (Thandoluhle)
2	3	Tournament JMC Trinityhouse Little Falls 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-02	rnd 5	type Standard	result 1	date 2024-06-08	rnd 2	type Standard	result 1
		Opponent Hattingh, J (Johannes)				Opponent Chadalavada, B (Bhaarghavarama)
3	3	Tournament JMC Trinityhouse Little Falls 2024				Tournament JMC Trinityhouse Little Falls 2024
		date 2024-06-02	rnd 1	type Standard	result 1	date 2024-06-02	rnd 3	type Standard	result 1
		Opponent Nyathi, N (Nothando)				Opponent Bioto, J (Jael)

#	Games	Start				End
1	3	Tournament Fourth Knight Riders Juniors Open Chess Tournament 204				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Tshabalala, H (Happy)				Opponent Zulu, T (Thandoluhle)
2	3	Tournament JMC Trinityhouse Little Falls 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-02	rnd 5	type Standard	result 1	date 2024-06-08	rnd 2	type Standard	result 1
		Opponent Hattingh, J (Johannes)				Opponent Chadalavada, B (Bhaarghavarama)
3	3	Tournament JMC Trinityhouse Little Falls 2024				Tournament JMC Trinityhouse Little Falls 2024
		date 2024-06-02	rnd 1	type Standard	result 1	date 2024-06-02	rnd 3	type Standard	result 1
		Opponent Nyathi, N (Nothando)				Opponent Bioto, J (Jael)

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	Chadalavada ,B (Bhaarghavarama)	2	1	0	2	1	0	0	0	0	0	0	0
1	Chadalavada ,B (Bhaarghavarama)	2	1275.9	1275.9	2	1265.4	1275.9	0	0	0	0	0	0
2	Moeketsi ,M (Mafoko)	2	1	0	2	1	0	0	0	0	0	0	0
2	Moeketsi ,M (Mafoko)	2	1210.6	1210.6	2	1214.8	1210.6	0	0	0	0	0	0
3	Thorulsley ,K (Kairaav)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Thorulsley ,K (Kairaav)	1	1631.2	1206.2	1	1621.8	1206.2	0	0	0	0	0	0
4	Chen ,Z (Zoey)	1	1	425	1	1	425	0	0	0	0	0	0
4	Chen ,Z (Zoey)	1	1193.4	1618.4	1	1200	1618.4	0	0	0	0	0	0
5	Capell ,A (Ashton)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Capell ,A (Ashton)	1	1218.2	793.2	1	1220.9	793.2	0	0	0	0	0	0
6	Hlatshwayo ,S (Silindile)	1	1	425	1	1	425	0	0	0	0	0	0
6	Hlatshwayo ,S (Silindile)	1	1260.7	1685.7	1	1256.7	1685.7	0	0	0	0	0	0
7	Nolan ,T (Tebello)	1	1	425	1	1	425	0	0	0	0	0	0
7	Nolan ,T (Tebello)	1	1182.1	1607.1	1	1175.6	1607.1	0	0	0	0	0	0
8	Mesele ,O (Oboitshepo)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Mesele ,O (Oboitshepo)	1	1333.3	908.3	1	1330.9	908.3	0	0	0	0	0	0
9	Joule ,J (Jessica)	1	1	425	1	1	425	0	0	0	0	0	0
9	Joule ,J (Jessica)	1	1165.4	1590.4	1	1161.6	1590.4	0	0	0	0	0	0
10	Weng ,D (Daniel)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Weng ,D (Daniel)	1	1553.9	1128.9	1	1564.8	1128.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Van Der Westhuizen, J (Jack)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms