Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Westhuizen, GJH (Gerhardus Johannes Hendrikus)

Chess SA id

104039614

FIDE id

Date of birth

2004-08-09 (Adult)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-07-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1239.4	1221.5	775.4	775.4
Raw rating	1239.4	1221.5	775.4	775.4
Weighted rating	1239.4	1221.5	775.4	775.4
Weighted performance	470.4	467.4	0	0
Floor	776.2	762.9	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	156.8	160.8	303.6	303.6
Highest rating	1289.1 2020-02-01	1275.7 2020-02-01	1200 2024-03-01	1200 2024-03-01
Highest raw rating	1276.2 2020-03-01	1262.9 2020-03-01	775.4 2024-03-01	775.4 2024-03-01
Highest weighted rating	1276.2 2022-02-01	1262.9 2022-02-01	775.4 2024-11-01	775.4 2024-11-01
Highest weighted performance	1289.1 2020-02-01	1275.7 2020-02-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1239.4	1221.5	775.4	775.4
Analysis
Rating	1239.4	1221.5	775.4	775.4
Raw rating	1239.4	1221.5	775.4	775.4
Weighted rating	1239.4	1221.5	775.4
Weighted performance	470.4	467.4	0
K-factor	36	36	40	40
Floor	776.2	762.9	500	500
Max/Min rating change allowed	156.8	160.8	303.6	303.6
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	1239.4	1221.5	775.4	775.4
New weighted rating	1239.4	1221.5	775.4	775.4
New weighted performance	470	467	0	0
Temp new rating	1239.4	1221.5	775.4	775.4
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1239.4	1221.5	775.4	775.4
New K-factor	36	36	40	40
New floor	776.2	762.9	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	5	5
	0	0
History	463	463

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	89	44	49.44	-4.8	1036.2	1031.5
Standard	89	44	49.44	-4.8	1036.2	1031.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1239.4	1221.5	775.4	775.4
2025-09-01	1239.4	1221.5	775.4	775.4
2025-08-01	1239.4	1221.5	775.4	775.4
2025-07-01	1239.4	1221.5	775.4	775.4
2025-06-01	1239.4	1221.5	775.4	775.4
2025-05-01	1239.4	1221.5	775.4	775.4
2025-04-01	1239.4	1221.5	775.4	775.4
2025-03-01	1239.4	1221.5	775.4	775.4
2025-02-01	1239.4	1221.5	775.4	775.4
2025-01-01	1239.4	1221.5	775.4	775.4
2024-12-01	1239.4	1221.5	775.4	775.4
2024-11-01	1239.4	1221.5	775.4	775.4
2024-10-01	1239.4	1221.5	775.4	775.4
2024-09-01	1239.4	1221.5	775.4	775.4
2024-08-01	1239.4	1221.5	775.4	775.4
2024-07-01	1239.4	1221.5	775.4	775.4
2024-06-01	1239.4	1221.5	775.4	775.4
2024-08-01	1239.4	1221.5	775.4	775.4
2024-04-01	1239.4	1221.5	775.4	775.4
2024-03-01	1239.4	1221.5	775.4	775.4
2024-02-01	1239.4	1221.5	775.4	775.4
2024-01-01	1239.4	1221.5	775.4	775.4
2023-12-01	1239.4	1221.5	775.4	775.4
2023-11-01	1239.4	1221.5	775.4	775.4

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	Bojanala Chess Federation Clash of Schools 2022 (Prestige)	2022-07-22	2022-07-22	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
2	Laerskool Proteapark 2020 (C)	2020-02-29	2020-02-29	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
3	2019 South African Top Schools Team Championships (U15+U17 Open)	2020-01-10	2020-01-11	Standard	4 Knights (4K)	5	4	2	Yes	Analysis
4	2019 South African Junior Team Championships (U16D)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
5	Inter Region 2019 (U16 Open)	2019-10-19	2019-10-19	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
6	Laerskool Rustenburg 2019 (U16)	2019-08-17	2019-08-17	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
7	Fields College Open 2019 (U16)	2019-02-02	2019-02-02	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
8	Hoerskool Brits Tournament 2019 (B)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	5	1.5	Yes	Analysis
9	South African Junior Team Championships 2018 (U16D)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	6	5	Yes	Analysis
10	Lebone II Chess 2018 (U16)	2018-09-01	2018-09-01	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
11	Bojanala Regionals 2018 (U16)	2018-09-15	2018-09-15	Standard	Bojanala Platina (NBR)	5	5	1.5	Yes	Analysis
12	Laerskool Brits Tournament 2018 (U16)	2018-08-04	2018-08-04	Standard	Bojanala Platina (NBR)	5	5	1.5	Yes	Analysis
13	Ho�rskool Frikkie Meyer 2018 (B)	2018-07-21	2018-07-21	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
14	Inter Regional 2018 (U16 Individual)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
15	Laerskool Proteapark Chess 2018 (C)	2018-05-19	2018-05-19	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
16	Laerskool Rustenburg 2018 (B)	2018-03-24	2018-03-24	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
17	South African Junior Team Championships 2017 (U16C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2019 South African Top Schools Team Championships				Tournament Laerskool Proteapark 2020
		date 2020-01-11	rnd 5	type Standard	result 1	date 2020-02-29	rnd 5	type Standard	result 1
		Opponent Du Toit, GF (Guillaume Francois)				Opponent Jordaan, M (Monica)
2	4	Tournament Ho�rskool Frikkie Meyer 2018				Tournament Ho�rskool Frikkie Meyer 2018
		date 2018-07-21	rnd 2	type Standard	result 1	date 2018-07-21	rnd 5	type Standard	result 1
		Opponent Fourie, M (Marli)				Opponent Van Zyl, D (Daniel)
3	3	Tournament Hoerskool Brits Tournament 2019				Tournament Laerskool Rustenburg 2019
		date 2019-02-09	rnd 4	type Standard	result 1	date 2019-08-17	rnd 1	type Standard	result 1
		Opponent Matlou, O (Otsile)				Opponent Diswaai, P (Phemelo)

#	Games	Start				End
1	6	Tournament 2019 South African Top Schools Team Championships				Tournament Laerskool Proteapark 2020
		date 2020-01-11	rnd 5	type Standard	result 1	date 2020-02-29	rnd 5	type Standard	result 1
		Opponent Du Toit, GF (Guillaume Francois)				Opponent Jordaan, M (Monica)
2	4	Tournament Ho�rskool Frikkie Meyer 2018				Tournament Ho�rskool Frikkie Meyer 2018
		date 2018-07-21	rnd 2	type Standard	result 1	date 2018-07-21	rnd 5	type Standard	result 1
		Opponent Fourie, M (Marli)				Opponent Van Zyl, D (Daniel)
3	3	Tournament Hoerskool Brits Tournament 2019				Tournament Laerskool Rustenburg 2019
		date 2019-02-09	rnd 4	type Standard	result 1	date 2019-08-17	rnd 1	type Standard	result 1
		Opponent Matlou, O (Otsile)				Opponent Diswaai, P (Phemelo)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2019 South African Top Schools Team Championships				Tournament Laerskool Proteapark 2020
		date 2020-01-11	rnd 5	type Standard	result 1	date 2020-02-29	rnd 5	type Standard	result 1
		Opponent Du Toit, GF (Guillaume Francois)				Opponent Jordaan, M (Monica)
2	4	Tournament Ho�rskool Frikkie Meyer 2018				Tournament Ho�rskool Frikkie Meyer 2018
		date 2018-07-21	rnd 2	type Standard	result 1	date 2018-07-21	rnd 5	type Standard	result 1
		Opponent Fourie, M (Marli)				Opponent Van Zyl, D (Daniel)
3	3	Tournament South African Junior Team Championships 2018				Tournament South African Junior Team Championships 2018
		date 2018-12-18	rnd 5	type Standard	result 1	date 2018-12-20	rnd 7	type Standard	result 1
		Opponent Baker, L (Leone)				Opponent Takawira, M (Matt)

#	Games	Start				End
1	6	Tournament 2019 South African Top Schools Team Championships				Tournament Laerskool Proteapark 2020
		date 2020-01-11	rnd 5	type Standard	result 1	date 2020-02-29	rnd 5	type Standard	result 1
		Opponent Du Toit, GF (Guillaume Francois)				Opponent Jordaan, M (Monica)
2	4	Tournament Ho�rskool Frikkie Meyer 2018				Tournament Ho�rskool Frikkie Meyer 2018
		date 2018-07-21	rnd 2	type Standard	result 1	date 2018-07-21	rnd 5	type Standard	result 1
		Opponent Fourie, M (Marli)				Opponent Van Zyl, D (Daniel)
3	3	Tournament South African Junior Team Championships 2018				Tournament South African Junior Team Championships 2018
		date 2018-12-18	rnd 5	type Standard	result 1	date 2018-12-20	rnd 7	type Standard	result 1
		Opponent Baker, L (Leone)				Opponent Takawira, M (Matt)

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	Khampepe ,OJ (Olebogeng Joy)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
1	Khampepe ,OJ (Olebogeng Joy)	4	905.7	1011.9	4	902.1	1011.9	0	0	0	0	0	0
2	Van Greuning ,PJ (Pieter Jacobus)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Van Greuning ,PJ (Pieter Jacobus)	3	825.2	966.9	3	809.4	966.9	0	0	0	0	0	0
3	Moletsane ,OP (Oreratile Pontsho)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Moletsane ,OP (Oreratile Pontsho)	3	1196.8	1055.1	3	1199.3	1055.1	0	0	0	0	0	0
4	Rakgokong ,O (Otshepeng)	3	3	425	3	3	425	0	0	0	0	0	0
4	Rakgokong ,O (Otshepeng)	3	1015	1440	3	1016.9	1440	0	0	0	0	0	0
5	Van Zyl ,D (Daniel)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	Van Zyl ,D (Daniel)	2	1043.6	1256.1	2	1032	1256.1	0	0	0	0	0	0
6	Molotsi ,O (Oabile)	2	1	0	2	1	0	0	0	0	0	0	0
6	Molotsi ,O (Oabile)	2	1171.1	1171.1	2	1177.2	1171.1	0	0	0	0	0	0
7	Matlou ,O (Otsile)	2	1	0	2	1	0	0	0	0	0	0	0
7	Matlou ,O (Otsile)	2	1043.9	1043.9	2	1026	1043.9	0	0	0	0	0	0
8	Mokoena ,T (Thoriso)	2	1	0	2	1	0	0	0	0	0	0	0
8	Mokoena ,T (Thoriso)	2	1097.2	1097.2	2	1091.8	1097.2	0	0	0	0	0	0
9	Chikwava ,T (Tawana)	2	1	0	2	1	0	0	0	0	0	0	0
9	Chikwava ,T (Tawana)	2	1174.6	1174.6	2	1163.7	1174.6	0	0	0	0	0	0
10	Neto ,D (David)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
10	Neto ,D (David)	2	817.4	604.9	2	818.3	604.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Van Der Westhuizen, GJH (Gerhardus Johannes Hendrikus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms