Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Tonder, WF (Willem Frederick)

Chess SA id

1640112268

FIDE id

Date of birth

1964-04-29 (Adult)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-09-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1203.1	1208.2	1244.1	1056
Raw rating	1203.1	1208.2	1244.1	1056
Weighted rating	1203.1	1208.2	1243.9	1056
Weighted performance	821.1	830.9	0	0
Floor	734.8	719.4	744.1	700
K-factor	36	36	36	36
Min/Max rating change allowed	165.1	163.9	155.7	203.6
Highest rating	1234.8 2020-03-01	1219.4 2023-09-01	1331.1 2019-06-01	1200 2018-10-01
Highest raw rating	1234.8 2020-03-01	1219.4 2023-09-01	1244.1 2024-02-01	1200 2019-12-01
Highest weighted rating	1234.8 2021-09-01	1219.4 2025-07-01	1243.4 2025-08-01	1200 2018-10-01
Highest weighted performance	1211.6 2019-09-01	1200 2018-01-01	1331.1 2019-06-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1203.1	1208.2	1244.1	1056
Analysis
Rating	1203.1	1208.2	1244.1	1056
Raw rating	1203.1	1208.2	1244.1	1056
Weighted rating	1203.1	1208.2	1243.9
Weighted performance	821.1	830.9	0
K-factor	36	36	36	36
Floor	734.8	719.4	744.1	700
Max/Min rating change allowed	165.1	163.9	155.7	203.6
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	1203.1	1208.2	1244.1	1056
New weighted rating	1203.1	1208.2	1244	1056
New weighted performance	820.7	830.5	0	0
Temp new rating	1203.1	1208.2	1244.1	1056
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1203.1	1208.2	1244.1	1056
New K-factor	36	36	36	36
New floor	734.8	719.4	744.1	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	12	12	0	0
	35	26	0	9
	4	4	0	0
History	118	83	19	16

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
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	118	51.5	43.64	-54	1237.8	1183.8
Standard	83	38.5	46.39	-30.7	1206.5	1175.8
Rapid	19	8	42.11	-67.1	1373.5	1306.4
Blitz	16	5	31.25	-159.4	1239.1	1079.7

Date	Main	Standard	Rapid	Blitz
2025-09-30	1203.1	1208.2	1244.1	1056
2025-09-01	1203.1	1208.2	1244.1	1056
2025-08-01	1203.1	1208.2	1244.1	1056
2025-07-01	1203.1	1208.2	1244.1	1056
2025-06-01	1203.1	1208.2	1244.1	1056
2025-05-01	1203.1	1208.2	1244.1	1056
2025-04-01	1203.1	1208.2	1244.1	1056
2025-03-01	1203.1	1208.2	1244.1	1056
2025-02-01	1203.1	1208.2	1244.1	1056
2025-01-01	1203.1	1208.2	1244.1	1056
2024-12-01	1203.1	1208.2	1244.1	1056
2024-11-01	1203.1	1208.2	1244.1	1056
2024-10-01	1203.1	1208.2	1244.1	1056
2024-09-01	1203.1	1208.2	1244.1	1056
2024-08-01	1203.1	1208.2	1244.1	1056
2024-07-01	1203.1	1208.2	1244.1	1056
2024-06-01	1203.1	1208.2	1244.1	1056
2024-08-01	1203.1	1208.2	1244.1	1056
2024-04-01	1203.1	1208.2	1244.1	1056
2024-03-01	1203.1	1208.2	1244.1	1056
2024-02-01	1203.1	1208.2	1244.1	1056
2024-01-01	1203.1	1208.2	1244.1	1056
2023-12-01	1203.1	1208.2	1223.7	1056
2023-11-01	1203.1	1208.2	1223.7	1056

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	WP Club League 2023 (C)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	1	0	Yes	Analysis
2	CW Top Schools 2023 (Intermediate)	2023-08-12	2023-08-12	Standard	West Coast (WCU)	5	5	4	Yes	Analysis
3	Cape Town Open 2023 (Intermediate)	2023-03-25	2023-03-26	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
4	South African Open 2022 (B)	2022-07-09	2022-07-17	Standard	Cape Town (WCT)	11	10	2.5	Yes	Analysis
5	South African Open 2022 (Blitz)	2022-07-14	2022-07-14	Blitz	Cape Town (WCT)	10	9	2	Yes	Analysis
6	Drakenstein Pioneers Open 2022 (B)	2022-03-26	2022-03-26	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
7	Moja Open 2022 (C)	2022-03-19	2022-03-20	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
8	Cape Winelands Open 2022 (Intermediate)	2022-02-12	2022-02-13	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
9	Western Cape Closed 2021 (Open)	2021-09-24	2021-09-25	Standard	Cape Winelands (WCW)	6	4	0.5	Yes	Analysis
10	2020 Western Province Open (Prestige)	2020-03-07	2020-03-08	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
11	Nelson Mandela Rapid 2020 (Open)	2020-02-01	2020-02-01	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
12	2019 South African Juior Blitz Championship (B)	2020-01-05	2020-01-05	Blitz	4 Knights (4K)	7	7	3	Yes	Analysis
13	2019 Kraaifontein Open (Open)	2019-12-06	2019-12-08	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
14	3rd ACL Chess Festival 2019 (Open)	2019-09-05	2019-09-05	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
15	2019 Western Cape Closed Chess Championships (D)	2019-09-21	2019-09-22	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
16	2019 Western Province League (E)	2019-07-27	2019-08-10	Standard	Cape Town (WCT)	9	6	2	Yes	Analysis
17	Western Cape Womans Month Tournament 2019 (Elite)	2019-08-09	2019-08-11	Standard	West Coast (WCU)	7	6	2	Yes	Analysis
18	2019 Elsies River Open (Open)	2019-06-22	2019-06-23	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
19	Drakenstein Dragons Rapid 2019 (Open)	2019-06-15	2019-06-15	Rapid	Cape Winelands (WCW)	7	7	3.5	Yes	Analysis
20	Cape Winelands Open 2019 (B)	2019-04-27	2019-04-27	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis

#	Games	Start				End
1	7	Tournament 2019 Western Cape Closed Chess Championships				Tournament 2019 Kraaifontein Open
		date 2019-09-21	rnd 1	type Standard	result 0.5	date 2019-12-06	rnd 1	type Standard	result 1
		Opponent Windvogel, N (Neshere)				Opponent Blomerus, K (Kian)
2	4	Tournament Cape Winelands Open 2022				Tournament Moja Open 2022
		date 2022-02-13	rnd 5	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Meyson, T (Tharwah)				Opponent Meyambo, U (Unathi)
3	4	Tournament Cape Winelands Open 2019				Tournament Drakenstein Dragons Rapid 2019
		date 2019-04-27	rnd 4	type Standard	result 1	date 2019-06-15	rnd 2	type Rapid	result 0.5
		Opponent Tamanie, N (Nicole)				Opponent Natus, AS (Arthur)

#	Games	Start				End
1	7	Tournament 2019 Western Cape Closed Chess Championships				Tournament 2019 Kraaifontein Open
		date 2019-09-21	rnd 1	type Standard	result 0.5	date 2019-12-06	rnd 1	type Standard	result 1
		Opponent Windvogel, N (Neshere)				Opponent Blomerus, K (Kian)
2	4	Tournament Cape Winelands Open 2022				Tournament Moja Open 2022
		date 2022-02-13	rnd 5	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Meyson, T (Tharwah)				Opponent Meyambo, U (Unathi)
3	3	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-15	rnd 8	type Standard	result 1	date 2022-07-16	rnd 10	type Standard	result 0.5
		Opponent Johnson, A (Amber)				Opponent Blankenberg, T (Taylon)

#	Games	Start				End
1	2	Tournament Nelson Mandela Rapid 2020				Tournament Nelson Mandela Rapid 2020
		date 2020-02-01	rnd 5	type Rapid	result 0.5	date 2020-02-01	rnd 6	type Rapid	result 1
		Opponent Van Der Walt, P (Pieter)				Opponent Maxwell, CP (Christian)
2	2	Tournament Drakenstein Dragons Rapid 2019				Tournament Drakenstein Dragons Rapid 2019
		date 2019-06-15	rnd 5	type Rapid	result 1	date 2019-06-15	rnd 6	type Rapid	result 1
		Opponent Titus, DF (Deon)				Opponent Abrahams, A (Abraham)
3	2	Tournament Drakenstein Dragons Rapid 2019				Tournament Drakenstein Dragons Rapid 2019
		date 2019-06-15	rnd 1	type Rapid	result 1	date 2019-06-15	rnd 2	type Rapid	result 0.5
		Opponent Adams, M (Matthew)				Opponent Natus, AS (Arthur)

#	Games	Start				End
1	2	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-14	rnd 8	type Blitz	result 1	date 2022-07-14	rnd 9	type Blitz	result 1
		Opponent Palmer, J (Jordan)				Opponent Cloete, JB (Jade Barry)
2	2	Tournament 2019 South African Juior Blitz Championship				Tournament 2019 South African Juior Blitz Championship
		date 2020-01-05	rnd 3	type Blitz	result 1	date 2020-01-05	rnd 4	type Blitz	result 1
		Opponent Scheckter, R (Rebecca)				Opponent Edeani, T (Tobenna)
3	1	Tournament 2019 South African Juior Blitz Championship				Tournament 2019 South African Juior Blitz Championship
		date 2020-01-05	rnd 6	type Blitz	result 1	date 2020-01-05	rnd 6	type Blitz	result 1
		Opponent Edeani, C (Chidinma)				Opponent Edeani, C (Chidinma)

#	Games	Start				End
1	4	Tournament Cape Winelands Open 2022				Tournament Moja Open 2022
		date 2022-02-13	rnd 5	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Meyson, T (Tharwah)				Opponent Meyambo, U (Unathi)
2	3	Tournament Drakenstein Pioneers Open 2022				Tournament Drakenstein Pioneers Open 2022
		date 2022-03-26	rnd 2	type Standard	result 1	date 2022-03-26	rnd 4	type Standard	result 1
		Opponent Conradie, M (Magda)				Opponent Mente, L (Limi)
3	3	Tournament 2020 Western Province Open				Tournament 2020 Western Province Open
		date 2020-03-07	rnd 3	type Standard	result 1	date 2020-03-08	rnd 5	type Standard	result 1
		Opponent Groenewald, J (Jayden)				Opponent Makhasi, A (Athule)

#	Games	Start				End
1	4	Tournament Cape Winelands Open 2022				Tournament Moja Open 2022
		date 2022-02-13	rnd 5	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Meyson, T (Tharwah)				Opponent Meyambo, U (Unathi)
2	3	Tournament Drakenstein Pioneers Open 2022				Tournament Drakenstein Pioneers Open 2022
		date 2022-03-26	rnd 2	type Standard	result 1	date 2022-03-26	rnd 4	type Standard	result 1
		Opponent Conradie, M (Magda)				Opponent Mente, L (Limi)
3	3	Tournament 2020 Western Province Open				Tournament 2020 Western Province Open
		date 2020-03-07	rnd 3	type Standard	result 1	date 2020-03-08	rnd 5	type Standard	result 1
		Opponent Groenewald, J (Jayden)				Opponent Makhasi, A (Athule)

#	Games	Start				End
1	2	Tournament Drakenstein Dragons Rapid 2019				Tournament Drakenstein Dragons Rapid 2019
		date 2019-06-15	rnd 5	type Rapid	result 1	date 2019-06-15	rnd 6	type Rapid	result 1
		Opponent Titus, DF (Deon)				Opponent Abrahams, A (Abraham)
2	1	Tournament Nelson Mandela Rapid 2020				Tournament Nelson Mandela Rapid 2020
		date 2020-02-01	rnd 6	type Rapid	result 1	date 2020-02-01	rnd 6	type Rapid	result 1
		Opponent Maxwell, CP (Christian)				Opponent Maxwell, CP (Christian)
3	1	Tournament Nelson Mandela Rapid 2020				Tournament Nelson Mandela Rapid 2020
		date 2020-02-01	rnd 3	type Rapid	result 1	date 2020-02-01	rnd 3	type Rapid	result 1
		Opponent Bosman, P (Petrus)				Opponent Bosman, P (Petrus)

#	Games	Start				End
1	2	Tournament South African Open 2022				Tournament South African Open 2022
		date 2022-07-14	rnd 8	type Blitz	result 1	date 2022-07-14	rnd 9	type Blitz	result 1
		Opponent Palmer, J (Jordan)				Opponent Cloete, JB (Jade Barry)
2	2	Tournament 2019 South African Juior Blitz Championship				Tournament 2019 South African Juior Blitz Championship
		date 2020-01-05	rnd 3	type Blitz	result 1	date 2020-01-05	rnd 4	type Blitz	result 1
		Opponent Scheckter, R (Rebecca)				Opponent Edeani, T (Tobenna)
3	1	Tournament 2019 South African Juior Blitz Championship				Tournament 2019 South African Juior Blitz Championship
		date 2020-01-05	rnd 6	type Blitz	result 1	date 2020-01-05	rnd 6	type Blitz	result 1
		Opponent Edeani, C (Chidinma)				Opponent Edeani, C (Chidinma)

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	Brown ,D (Deon)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Brown ,D (Deon)	2	1250.3	825.3	2	1274.3	825.3	0	0	0	0	0	0
2	Conradie ,M (Magda)	2	1	0	1	1	425	0	0	0	1	0	-425
2	Conradie ,M (Magda)	2	1077.2	1077.2	1	1050.4	1502.2	0	0	0	1	1200	652.2
3	Manuel ,C (Conner)	2	0	-425	1	0	-425	0	0	0	1	0	-425
3	Manuel ,C (Conner)	2	1331	906	1	1242.5	906	0	0	0	1	1200	906
4	Segelaar ,G (Geriant)	2	0	-425	0	0	0	1	0	-425	1	0	-425
4	Segelaar ,G (Geriant)	2	1345.8	920.8	0	0	0	1	1171	920.8	1	1200	920.8
5	Prinsloo ,R (Reinhardt)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Prinsloo ,R (Reinhardt)	1	1408.9	983.9	1	1394.2	983.9	0	0	0	0	0	0
6	Swanevelder ,D (Dewald)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Swanevelder ,D (Dewald)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Mokoatle ,RL (Reanetse Lucianus)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Mokoatle ,RL (Reanetse Lucianus)	1	1326.8	901.8	1	1337.3	901.8	0	0	0	0	0	0
8	Van Rhyn ,A (Aden)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Van Rhyn ,A (Aden)	1	1491.4	1066.4	1	1462.6	1066.4	0	0	0	0	0	0
9	Zanazo ,K (Kopano)	1	1	425	1	1	425	0	0	0	0	0	0
9	Zanazo ,K (Kopano)	1	1232.5	1657.5	1	1233.3	1657.5	0	0	0	0	0	0
10	Minnaar ,E (Ethan)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Minnaar ,E (Ethan)	1	1253.5	828.5	1	1182.5	828.5	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 Tonder, WF (Willem Frederick)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms