Chess South Africa Ratings Database

PLAYER PAGE

Personal

Groenewald, W (Willem)

Chess SA id

1100161467

FIDE id

Date of birth

2010-09-01 (U16)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-10-26

Personal details last changed

1900-01-01

Junior GPX Games

53.1

Junior GPX Points

1395.5

Item	Main	Standard	Rapid	Blitz
Rating	1515.8	1490.1	1406.5	1200
Raw rating	1515.8	1490.1	1406.5	1200
Weighted rating	1404	1353.8	1340.6	1200
Weighted performance	1460.6	1456.3	1346.7	0
Floor	1046.1	1041.9	906.5	700
K-factor	32	32	32	36
Min/Max rating change allowed	105.7	109.7	123.6	165.8
Highest rating	1546.1 2025-07-01	1541.9 2025-07-01	1567 2023-08-01	1200 2018-10-01
Highest raw rating	1546.1 2025-07-01	1541.9 2025-07-01	1406.5 2025-11-01	1200 2024-03-01
Highest weighted rating	1404 2025-11-01	1353.8 2025-11-01	1340.6 2025-11-01	1200 2018-10-01
Highest weighted performance	1546.1 2025-07-01	1541.9 2019-12-01	1567 2023-08-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1515.8	1490.1	1406.5	1200
Analysis
Rating	1515.8	1490.1	1406.5	1200
Raw rating	1515.8	1490.1	1406.5	1200
Weighted rating	1404	1353.8	1340.6
Weighted performance	1460.6	1456.3	1346.7
K-factor	32	32	32	36
Floor	1046.1	1041.9	906.5	700
Max/Min rating change allowed	105.7	109.7	123.6	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	1515.8	1490.1	1406.5	1200
New weighted rating	1417	1369.5	1346.9	1200
New weighted performance	1452	1447.6	1338.3	0
Temp new rating	1515.8	1490.1	1406.5	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1515.8	1490.1	1406.5	1200
New K-factor	32	32	32	36
New floor	1046.1	1041.9	906.5	700

Item	Main	Standard	Rapid
	0	0	0
	55	45	10
	23	5	18
	10	5	5
	0	0	0
	0	0	0
History	88	55	33

Games since
	Main 78	Standard 50		Rapid 28		Blitz 0
Gender	Male
Age group	U16
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1163		363		43
Male	1009		312		37
U16	140		41		9
U16 Male	114		35		8
Standard
	RSA		Province		Region
Overall	1279		361		44
Male	1083		294		33
U16	169		53		10
U16 Male	135		43		8
Rapid
	RSA		Province		Region
Overall	503		256		41
Male	432		220		33
U16	78		41		9
U16 Male	62		34		7
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	55	33.5	60.91	92.7	1412.3	1505.1
Standard	45	26.5	58.89	75.6	1424	1499.5
Rapid	10	7	70	170	1360	1530
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	88	54	61.36	96.6	1362.4	1459
Standard	55	30	54.55	38.6	1413.5	1452.1
Rapid	33	24	72.73	193.2	1277.4	1470.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1515.8	1490.1	1406.5	1200
2025-09-30	1502.8	1494.3	1341.3	1200
2025-09-01	1501.4	1493.7	1341.3	1200
2025-08-01	1509.1	1493.7	1340	1200
2025-07-01	1546.1	1541.9	1340	1200
2025-06-01	1471.5	1453.6	1340	1200
2025-05-01	1471.5	1453.6	1340	1200
2025-04-01	1345.6	1296.7	1340	1200
2025-03-01	1345.1	1276	1340	1200
2025-02-01	1318.4	1226	1340	1200
2025-01-01	1313.9	1203.9	1340	1200
2024-12-01	1313.9	1203.9	1340	1200
2024-11-01	1313.9	1203.9	1340	1200
2024-10-01	1302.9	1203.9	1336	1200
2024-09-01	1302.9	1203.9	1336	1200
2024-08-01	1302.9	1203.9	1336	1200
2024-07-01	1302.9	1203.9	1336	1200
2024-09-01	1263.2	1203.9	1296.8	1200
2024-05-01	1263.2	1203.9	1296.8	1200
2024-04-01	1263.2	1203.9	1296.8	1200
2024-03-01	1262.6	1193.5	1296.8	1200
2024-02-01	1241	1193.5	1276.3	1200
2024-01-01	1241	1193.5	1276.3	1200
2023-12-01	1241	1193.5	1276.3	1200

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 Club Championship 2025 (B)	2025-10-25	2025-10-26	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
2	Worcester Schools Knock-Out 2025 (U15+U18 Boys)	2025-10-18	2025-10-18	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
3	Western Cape Schools - Top Schools 2025 (U17)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	3.5	Yes	Analysis
4	Cape Winelands Top Schools 2025 (U15)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	4	2	Yes	Analysis
5	Cape Winelands Open 2025 (Advanced)	2025-07-19	2025-07-20	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
6	2025 WC Rural Cup (U16)	2025-06-14	2025-06-15	Standard	Eden (WEG)	6	6	4	Yes	Analysis
7	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	4.5	Yes	Analysis
8	Cape Winelands Schools Prestige 2025 (U15 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
9	Cape Winelands Schools - Trials 1 2025 (U15 Boys)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
10	Marie Delport Memorial 2025 (Open)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Club Championship 2025 (B)	2025-10-25	2025-10-26	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
2	Worcester Schools Knock-Out 2025 (U15+U18 Boys)	2025-10-18	2025-10-18	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
3	Western Cape Schools - Top Schools 2025 (U17)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	3.5	Yes	Analysis
4	Cape Winelands Top Schools 2025 (U15)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	4	2	Yes	Analysis
5	Cape Winelands Open 2025 (Advanced)	2025-07-19	2025-07-20	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
6	2025 WC Rural Cup (U16)	2025-06-14	2025-06-15	Standard	Eden (WEG)	6	6	4	Yes	Analysis
7	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	4.5	Yes	Analysis
8	Cape Winelands Schools Prestige 2025 (U15 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
9	Cape Winelands Schools - Trials 1 2025 (U15 Boys)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
10	Marie Delport Memorial 2025 (Open)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
11	Worcester Knock-Out 2024 (U15 Boys)	2024-10-19	2024-10-19	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
12	Western Cape - Brian Raubenheimer Development Tournament 2024 (U15 Boys)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	6	6	4.5	Yes	Analysis
13	Cape Winelands Schools - Prestige 2024 (U15 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
14	Cape Winelands Schools - HS Trials 1 2024 (U15 Boys)	2024-02-17	2024-02-17	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
15	Western Cape Top Schools 2023 (U13 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	5	1.5	Yes	Analysis
16	CW Top Schools 2023 (U13 Mix + U13 Girls)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament Worcester Schools Knock-Out 2025				Tournament Western Cape Club Championship 2025
		date 2025-10-18	rnd 4	type Rapid	result 1	date 2025-10-25	rnd 2	type Standard	result 1
		Opponent Van Rhyn, R (Remigio)				Opponent Topp, K (Kelvin)
2	5	Tournament 2025 WC Rural Cup				Tournament 2025 WC Rural Cup
		date 2025-06-14	rnd 2	type Standard	result 1	date 2025-06-15	rnd 6	type Standard	result 1
		Opponent Coleman, A (Anthony)				Opponent Mpuru, M (Moyisi)
3	5	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Worcester Knock-Out 2024
		date 2024-06-08	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 1	type Rapid	result 0.5
		Opponent Adams, E (El-Linio)				Opponent Hugo, E (Emil)

#	Games	Start				End
1	5	Tournament 2025 WC Rural Cup				Tournament 2025 WC Rural Cup
		date 2025-06-14	rnd 2	type Standard	result 1	date 2025-06-15	rnd 6	type Standard	result 1
		Opponent Coleman, A (Anthony)				Opponent Mpuru, M (Moyisi)
2	4	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 3	type Standard	result 1	date 2025-04-27	rnd 6	type Standard	result 1
		Opponent Stander, H (Hendrik)				Opponent Claassen, M (Mervin)
3	4	Tournament Cape Winelands Schools Prestige 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-04-26	rnd 1	type Standard	result 1
		Opponent Botha, M (Meurant)				Opponent Maruma, KB (Kamogelo)

#	Games	Start				End
1	6	Tournament CW Top Schools 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-08-26	rnd 1	type Rapid	result 0.5	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Gaffoor, E (Eesa)				Opponent Trautman, T (Tristan)
2	5	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Worcester Knock-Out 2024
		date 2024-06-08	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 1	type Rapid	result 0.5
		Opponent Adams, E (El-Linio)				Opponent Hugo, E (Emil)
3	4	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 6	type Rapid	result 0.5
		Opponent Ntunta, I (Iminathi)				Opponent Maseti, E (Endinako)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 2	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Matthys, W (Waylynne Beronick)				Opponent Radloff, H (Hunther)
2	3	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Ntunta, I (Iminathi)				Opponent Conradie, A (Andre)
3	3	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 3	type Rapid	result 1	date 2024-06-08	rnd 5	type Rapid	result 1
		Opponent Adams, E (El-Linio)				Opponent Meyer, D (Dewanio)

#	Games	Start				End
1	2	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 2	type Standard	result 1	date 2025-09-06	rnd 3	type Standard	result 1
		Opponent Matinywa, T (Thobani)				Opponent Boonzaier, D (Devlin)
2	2	Tournament 2025 WC Rural Cup				Tournament 2025 WC Rural Cup
		date 2025-06-15	rnd 5	type Standard	result 1	date 2025-06-15	rnd 6	type Standard	result 1
		Opponent Gouws, G (Garlan)				Opponent Mpuru, M (Moyisi)
3	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 3	type Standard	result 1	date 2025-04-26	rnd 4	type Standard	result 1
		Opponent Stander, H (Hendrik)				Opponent Buhrs, J (Jethro)

#	Games	Start				End
1	5	Tournament CW Top Schools 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-08-26	rnd 2	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Matthys, W (Waylynne Beronick)				Opponent Trautman, T (Tristan)
2	3	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Ntunta, I (Iminathi)				Opponent Conradie, A (Andre)
3	3	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 3	type Rapid	result 1	date 2024-06-08	rnd 5	type Rapid	result 1
		Opponent Adams, E (El-Linio)				Opponent Meyer, D (Dewanio)

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	Muller ,K (Kieran)	2	1	0	2	1	0	0	0	0	0	0	0
1	Muller ,K (Kieran)	2	1585.2	1585.2	2	1575.6	1585.2	0	0	0	0	0	0
2	Coleman ,A (Anthony)	2	1	0	2	1	0	0	0	0	0	0	0
2	Coleman ,A (Anthony)	2	1607.7	1607.7	2	1626	1607.7	0	0	0	0	0	0
3	Gaffoor ,E (Eesa)	2	1	0	1	0.5	0	1	0.5	0	0	0	0
3	Gaffoor ,E (Eesa)	2	1404.7	1404.7	1	1418	1404.7	1	1334.1	1404.7	0	0	0
4	Vanana ,L (Libongile)	2	0	-425	1	0	-425	1	0	-425	0	0	0
4	Vanana ,L (Libongile)	2	1504.6	1079.6	1	1483.2	1079.6	1	1411.9	1079.6	0	0	0
5	Maseti ,E (Endinako)	2	1.5	212.5	0	0	0	2	1.5	212.5	0	0	0
5	Maseti ,E (Endinako)	2	1254.2	1466.7	0	0	0	2	1204.2	1466.7	0	0	0
6	Tshiwula ,N (Naba)	2	1	0	0	0	0	2	1	0	0	0	0
6	Tshiwula ,N (Naba)	2	1271.2	1271.2	0	0	0	2	1221.6	1271.2	0	0	0
7	Van Rhyn ,R (Remigio)	2	2	425	0	0	0	2	2	425	0	0	0
7	Van Rhyn ,R (Remigio)	2	1151	1576	0	0	0	2	1141.1	1576	0	0	0
8	Botha ,M (Meurant)	1	1	425	1	1	425	0	0	0	0	0	0
8	Botha ,M (Meurant)	1	1199.6	1624.6	1	1199.2	1624.6	0	0	0	0	0	0
9	Maxwell ,T (Tristan)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Maxwell ,T (Tristan)	1	1402.4	977.4	1	1378.1	977.4	0	0	0	0	0	0
10	Booysen ,L (Lukas)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Booysen ,L (Lukas)	1	1548.6	1123.6	1	1544.2	1123.6	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

Groenewald, W (Willem)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms