Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Westhuizen, PJ (Petrus)

Chess SA id

105039656

FIDE id

Date of birth

2005-08-18 (Adult)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-29

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1147.3	1138.9	634.4	586
Raw rating	1147.3	1138.9	634.4	586
Weighted rating	1147.3	1138.9	634.4	586
Weighted performance	318.2	315.8	0	0
Floor	647.3	638.9	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	178.7	180.9	371.2	397.7
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2018-02-01	1200 2024-02-01
Highest raw rating	1147.3 2024-02-01	1138.9 2024-02-01	634.4 2024-02-01	586 2024-02-01
Highest weighted rating	1147.3 2024-11-01	1138.9 2024-11-01	634.4 2024-11-01	586 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1147.3	1138.9	634.4	586
Analysis
Rating	1147.3	1138.9	634.4	586
Raw rating	1147.3	1138.9	634.4	586
Weighted rating	1147.3	1138.9	634.4
Weighted performance	318.2	315.8	0
K-factor	40	40	40	40
Floor	647.3	638.9	500	500
Max/Min rating change allowed	178.7	180.9	371.2	397.7
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	1147.3	1138.9	634.4	586
New weighted rating	1147.3	1138.9	634.4	586
New weighted performance	311.4	309.2	0	0
Temp new rating	1147.3	1138.9	634.4	586
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1147.3	1138.9	634.4	586
New K-factor	40	40	40	40
New floor	647.3	638.9	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	227	212	15

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	102	45.5	44.61	-45.8	991	945.2
Standard	97	43	44.33	-48.2	993.3	945.1
Rapid	5	2.5	50	0	946.7	946.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1147.3	1138.9	634.4	586
2025-09-30	1147.3	1138.9	634.4	586
2025-09-01	1147.3	1138.9	634.4	586
2025-08-01	1147.3	1138.9	634.4	586
2025-07-01	1147.3	1138.9	634.4	586
2025-06-01	1147.3	1138.9	634.4	586
2025-05-01	1147.3	1138.9	634.4	586
2025-04-01	1147.3	1138.9	634.4	586
2025-03-01	1147.3	1138.9	634.4	586
2025-02-01	1147.3	1138.9	634.4	586
2025-01-01	1147.3	1138.9	634.4	586
2024-12-01	1147.3	1138.9	634.4	586
2024-11-01	1147.3	1138.9	634.4	586
2024-10-01	1147.3	1138.9	634.4	586
2024-09-01	1147.3	1138.9	634.4	586
2024-08-01	1147.3	1138.9	634.4	586
2024-07-01	1147.3	1138.9	634.4	586
2024-09-01	1147.3	1138.9	634.4	586
2024-05-01	1147.3	1138.9	634.4	586
2024-04-01	1147.3	1138.9	634.4	586
2024-03-01	1147.3	1138.9	634.4	586
2024-02-01	1147.3	1138.9	634.4	586
2024-01-01	1147.3	1138.9	634.4	586
2023-12-01	1147.3	1138.9	634.4	586

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	Laerskool Proteapark 2020 (C)	2020-02-29	2020-02-29	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
2	Lebone II 2020 (U16)	2020-02-15	2020-02-15	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
3	2019 South African Junior Team Championships (U16D)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
4	NW Open 2019 (B)	2019-10-12	2019-10-12	Standard	Bojanala Platina (NBR)	5	3	1	Yes	Analysis
5	Inter Region 2019 (U16 Open)	2019-10-19	2019-10-19	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
6	Inter Regional Chess Championship 2019 (U16)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
7	Laerskool Olienpark 2019 (C)	2019-04-06	2019-04-06	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
8	Rustenburg Noord Primary Tournament 2019 (C)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
9	Laerskool Vastrap Tournament 2019 (C)	2019-02-23	2019-02-23	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
10	South African Junior Team Championships 2018 (U14D)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
11	Lebone II Chess 2018 (U14)	2018-09-01	2018-09-01	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
12	Bojanala Regionals 2018 (U14)	2018-09-15	2018-09-15	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
13	Laerskool Brits Tournament 2018 (U14)	2018-08-04	2018-08-04	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
14	Ho�rskool Frikkie Meyer 2018 (B)	2018-07-21	2018-07-21	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
15	2018 Super 12 (Senior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	2.5	Yes	Analysis
16	Laerskool Proteapark Chess 2018 (C)	2018-05-19	2018-05-19	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
17	Laerskool Rustenburg 2018 (C)	2018-03-24	2018-03-24	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
18	Hoerskool Brits 2018 (U14)	2018-03-17	2018-03-17	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
19	Laerskool Vastrap 2018 (U14)	2018-02-03	2018-02-03	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
20	Laerskool Rustenburg Noord Primary 2018 (C)	2018-02-24	2018-02-24	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2018 Super 12				Tournament Laerskool Proteapark Chess 2018
		date 2018-05-05	rnd 4	type Rapid	result 1	date 2018-05-19	rnd 4	type Standard	result 1
		Opponent Visser, B (Barry)				Opponent Rabe, L (Liza-Mari)
2	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 2	type Standard	result 1	date 2020-02-29	rnd 1	type Standard	result 1
		Opponent Tlhape, K (Kopano)				Opponent Snyman, A (Ashton)
3	3	Tournament Rustenburg Noord Primary Tournament 2019				Tournament Rustenburg Noord Primary Tournament 2019
		date 2019-02-09	rnd 2	type Standard	result 1	date 2019-02-09	rnd 4	type Standard	result 1
		Opponent Mokoena, T (Thoriso)				Opponent Naude, J (Juandre)

#	Games	Start				End
1	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 2	type Standard	result 1	date 2020-02-29	rnd 1	type Standard	result 1
		Opponent Tlhape, K (Kopano)				Opponent Snyman, A (Ashton)
2	4	Tournament Laerskool Proteapark Chess 2018				Tournament Laerskool Proteapark Chess 2018
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 4	type Standard	result 1
		Opponent Marx, HB (Heinrich)				Opponent Rabe, L (Liza-Mari)
3	3	Tournament Rustenburg Noord Primary Tournament 2019				Tournament Rustenburg Noord Primary Tournament 2019
		date 2019-02-09	rnd 2	type Standard	result 1	date 2019-02-09	rnd 4	type Standard	result 1
		Opponent Mokoena, T (Thoriso)				Opponent Naude, J (Juandre)

#	Games	Start				End
1	2	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 4	type Rapid	result 1	date 2018-05-05	rnd 5	type Rapid	result 1
		Opponent Visser, B (Barry)				Opponent Zwane, N (Njabulo)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 2	type Rapid	result 0.5	date 2018-05-05	rnd 2	type Rapid	result 0.5
		Opponent Post, R (Reuben)				Opponent Post, R (Reuben)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2018 Super 12				Tournament Laerskool Proteapark Chess 2018
		date 2018-05-05	rnd 4	type Rapid	result 1	date 2018-05-19	rnd 4	type Standard	result 1
		Opponent Visser, B (Barry)				Opponent Rabe, L (Liza-Mari)
2	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 2	type Standard	result 1	date 2020-02-29	rnd 1	type Standard	result 1
		Opponent Tlhape, K (Kopano)				Opponent Snyman, A (Ashton)
3	3	Tournament Rustenburg Noord Primary Tournament 2019				Tournament Rustenburg Noord Primary Tournament 2019
		date 2019-02-09	rnd 2	type Standard	result 1	date 2019-02-09	rnd 4	type Standard	result 1
		Opponent Mokoena, T (Thoriso)				Opponent Naude, J (Juandre)

#	Games	Start				End
1	5	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 2	type Standard	result 1	date 2020-02-29	rnd 1	type Standard	result 1
		Opponent Tlhape, K (Kopano)				Opponent Snyman, A (Ashton)
2	4	Tournament Laerskool Proteapark Chess 2018				Tournament Laerskool Proteapark Chess 2018
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 4	type Standard	result 1
		Opponent Marx, HB (Heinrich)				Opponent Rabe, L (Liza-Mari)
3	3	Tournament Rustenburg Noord Primary Tournament 2019				Tournament Rustenburg Noord Primary Tournament 2019
		date 2019-02-09	rnd 2	type Standard	result 1	date 2019-02-09	rnd 4	type Standard	result 1
		Opponent Mokoena, T (Thoriso)				Opponent Naude, J (Juandre)

#	Games	Start				End
1	2	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 4	type Rapid	result 1	date 2018-05-05	rnd 5	type Rapid	result 1
		Opponent Visser, B (Barry)				Opponent Zwane, N (Njabulo)

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	Mokoena ,T (Thoriso)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
1	Mokoena ,T (Thoriso)	3	1171.2	1312.8	3	1165.2	1312.8	0	0	0	0	0	0
2	Tlhage ,MM (Molemo Mmatshwabi)	2	1	0	2	1	0	0	0	0	0	0	0
2	Tlhage ,MM (Molemo Mmatshwabi)	2	1026.2	1026.2	2	1029.8	1026.2	0	0	0	0	0	0
3	Guneliev ,AA (Andrey Antonov)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Guneliev ,AA (Andrey Antonov)	2	905.2	480.2	2	903.2	480.2	0	0	0	0	0	0
4	Molotsi ,O (Oabile)	2	1	0	2	1	0	0	0	0	0	0	0
4	Molotsi ,O (Oabile)	2	1172.9	1172.9	2	1165.9	1172.9	0	0	0	0	0	0
5	Fourie ,G (Guillaume)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Fourie ,G (Guillaume)	2	817.7	392.7	2	826.2	392.7	0	0	0	0	0	0
6	Nkosi ,TO (Thato Omphemetse)	2	1	0	2	1	0	0	0	0	0	0	0
6	Nkosi ,TO (Thato Omphemetse)	2	1049.8	1049.8	2	1032.4	1049.8	0	0	0	0	0	0
7	Marx ,HB (Heinrich Butow)	2	1	0	2	1	0	0	0	0	0	0	0
7	Marx ,HB (Heinrich Butow)	2	904.7	904.7	2	899.7	904.7	0	0	0	0	0	0
8	Rabe ,L (Liza-Mari)	2	1	0	2	1	0	0	0	0	0	0	0
8	Rabe ,L (Liza-Mari)	2	978.2	978.2	2	983.6	978.2	0	0	0	0	0	0
9	Naude ,J (Juandre)	2	1	0	2	1	0	0	0	0	0	0	0
9	Naude ,J (Juandre)	2	775.6	775.6	2	767.7	775.6	0	0	0	0	0	0
10	Ntshabele ,TP (Tokologo)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Ntshabele ,TP (Tokologo)	1	986.8	561.8	1	982.2	561.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

Van Der Westhuizen, PJ (Petrus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms