Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, W (Willem Johan)

Chess SA id

1100137452

FIDE id

Date of birth

2010-01-29 (U16)

Gender

Male

Region

Sarah Baartman (ESB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-08-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1149.2	1200	1123.4	1200
Raw rating	1149.2	1200	1123.4	1200
Weighted rating	1149.2	1200	1123.4	1200
Weighted performance	758.5	0	788.6	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	178.3	165.8	184.9	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2020-01-01	1200 2024-02-01	1200 2020-01-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2020-01-01	1200 2024-02-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1149.2	1200	1123.4	1200
Analysis
Rating	1149.2	1200	1123.4	1200
Raw rating	1149.2	1200	1123.4	1200
Weighted rating	1149.2	1200	1123.4
Weighted performance	758.5	0	788.6
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	178.3	165.8	184.9	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	1149.2	1200	1123.4	1200
New weighted rating	1149.2	1200	1123.4	1200
New weighted performance	758.1	0	788.2	0
Temp new rating	1149.2	1200	1123.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1149.2	1200	1123.4	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Rapid
	0	0
	0	0
	0	0
	11	11
	26	26
	0	0
History	37	37

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Sarah Baartman (ESB)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
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	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	37	12	32.43	-149.3	1247.2	1097.9
Standard	0	0	0	0	0	0
Rapid	37	12	32.43	-149.3	1247.2	1097.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1149.2	1200	1123.4	1200
2025-09-01	1149.2	1200	1123.4	1200
2025-08-01	1149.2	1200	1123.4	1200
2025-07-01	1149.2	1200	1123.4	1200
2025-06-01	1149.2	1200	1123.4	1200
2025-05-01	1149.2	1200	1123.4	1200
2025-04-01	1149.2	1200	1123.4	1200
2025-03-01	1149.2	1200	1123.4	1200
2025-02-01	1149.2	1200	1123.4	1200
2025-01-01	1149.2	1200	1123.4	1200
2024-12-01	1149.2	1200	1123.4	1200
2024-11-01	1149.2	1200	1123.4	1200
2024-10-01	1149.2	1200	1123.4	1200
2024-09-01	1149.2	1200	1123.4	1200
2024-08-01	1149.2	1200	1123.4	1200
2024-07-01	1149.2	1200	1123.4	1200
2024-06-01	1149.2	1200	1123.4	1200
2024-08-01	1149.2	1200	1123.4	1200
2024-04-01	1149.2	1200	1123.4	1200
2024-03-01	1149.2	1200	1123.4	1200
2024-02-01	1149.2	1200	1123.4	1200
2024-01-01	1149.2	1200	1123.4	1200
2023-12-01	1149.2	1200	1123.4	1200
2023-11-01	1149.2	1200	1123.4	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	Stulting Sportdag 2023 (Senior)	2023-08-25	2023-08-25	Rapid	Sarah Baartman (ESB)	6	6	2	Yes	Analysis
2	Paul Sauer Chess Tournament 2023 (Senior)	2023-05-05	2023-05-05	Rapid	Sarah Baartman (ESB)	6	5	3	Yes	Analysis
3	The Team Battle 2022 (B)	2022-11-19	2022-11-19	Rapid	Sarah Baartman (ESB)	6	6	1	Yes	Analysis
4	Bloeisel Fees 2022 (Primary School A)	2022-10-29	2022-10-29	Rapid	Sarah Baartman (ESB)	7	7	4	Yes	Analysis
5	Stulting Sports Day 2022 (Seniors)	2022-08-26	2022-08-26	Rapid	Sarah Baartman (ESB)	13	13	2	Yes	Analysis
6	SBDCU First Fide Rated Open Tournament Fountains Mall 2022 (B)	2022-02-18	2022-02-19	Standard	Sarah Baartman (ESB)	5	0	0	No	Analysis

#	Games	Start				End
1	3	Tournament Paul Sauer Chess Tournament 2023				Tournament Paul Sauer Chess Tournament 2023
		date 2023-05-05	rnd 3	type Rapid	result 1	date 2023-05-05	rnd 5	type Rapid	result 1
		Opponent Draai, K (Kiara)				Opponent Qaqaqa, L (Liyanda)
2	2	Tournament Bloeisel Fees 2022				Tournament Bloeisel Fees 2022
		date 2022-10-29	rnd 3	type Rapid	result 1	date 2022-10-29	rnd 4	type Rapid	result 1
		Opponent Hickman, H (Handro)				Opponent Pyon, A (Adryan)
3	1	Tournament Stulting Sportdag 2023				Tournament Stulting Sportdag 2023
		date 2023-08-25	rnd 6	type Rapid	result 1	date 2023-08-25	rnd 6	type Rapid	result 1
		Opponent Botha, X (Xadrian)				Opponent Botha, X (Xadrian)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Paul Sauer Chess Tournament 2023				Tournament Paul Sauer Chess Tournament 2023
		date 2023-05-05	rnd 3	type Rapid	result 1	date 2023-05-05	rnd 5	type Rapid	result 1
		Opponent Draai, K (Kiara)				Opponent Qaqaqa, L (Liyanda)
2	2	Tournament Bloeisel Fees 2022				Tournament Bloeisel Fees 2022
		date 2022-10-29	rnd 3	type Rapid	result 1	date 2022-10-29	rnd 4	type Rapid	result 1
		Opponent Hickman, H (Handro)				Opponent Pyon, A (Adryan)
3	1	Tournament Stulting Sportdag 2023				Tournament Stulting Sportdag 2023
		date 2023-08-25	rnd 6	type Rapid	result 1	date 2023-08-25	rnd 6	type Rapid	result 1
		Opponent Botha, X (Xadrian)				Opponent Botha, X (Xadrian)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Paul Sauer Chess Tournament 2023				Tournament Paul Sauer Chess Tournament 2023
		date 2023-05-05	rnd 3	type Rapid	result 1	date 2023-05-05	rnd 5	type Rapid	result 1
		Opponent Draai, K (Kiara)				Opponent Qaqaqa, L (Liyanda)
2	2	Tournament Bloeisel Fees 2022				Tournament Bloeisel Fees 2022
		date 2022-10-29	rnd 3	type Rapid	result 1	date 2022-10-29	rnd 4	type Rapid	result 1
		Opponent Hickman, H (Handro)				Opponent Pyon, A (Adryan)
3	1	Tournament Stulting Sportdag 2023				Tournament Stulting Sportdag 2023
		date 2023-08-25	rnd 6	type Rapid	result 1	date 2023-08-25	rnd 6	type Rapid	result 1
		Opponent Botha, X (Xadrian)				Opponent Botha, X (Xadrian)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Paul Sauer Chess Tournament 2023				Tournament Paul Sauer Chess Tournament 2023
		date 2023-05-05	rnd 3	type Rapid	result 1	date 2023-05-05	rnd 5	type Rapid	result 1
		Opponent Draai, K (Kiara)				Opponent Qaqaqa, L (Liyanda)
2	2	Tournament Bloeisel Fees 2022				Tournament Bloeisel Fees 2022
		date 2022-10-29	rnd 3	type Rapid	result 1	date 2022-10-29	rnd 4	type Rapid	result 1
		Opponent Hickman, H (Handro)				Opponent Pyon, A (Adryan)
3	1	Tournament Stulting Sportdag 2023				Tournament Stulting Sportdag 2023
		date 2023-08-25	rnd 6	type Rapid	result 1	date 2023-08-25	rnd 6	type Rapid	result 1
		Opponent Botha, X (Xadrian)				Opponent Botha, X (Xadrian)

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	Budaza ,L (Ludwe)	2	0	-425	0	0	0	2	0	-425	0	0	0
1	Budaza ,L (Ludwe)	2	1435.1	1010.1	0	0	0	2	1237.8	1010.1	0	0	0
2	Salie ,R (Riaz)	2	0	-425	0	0	0	2	0	-425	0	0	0
2	Salie ,R (Riaz)	2	1401.3	976.3	0	0	0	2	1361.9	976.3	0	0	0
3	Dunn ,R (Rayden)	2	1	0	0	0	0	2	1	0	0	0	0
3	Dunn ,R (Rayden)	2	1202	1202	0	0	0	2	1160.6	1202	0	0	0
4	Botha ,X (Xadrian)	2	2	425	0	0	0	2	2	425	0	0	0
4	Botha ,X (Xadrian)	2	1170.9	1595.9	0	0	0	2	1121.8	1595.9	0	0	0
5	Myburgh ,B (Bruce)	2	0	-425	0	0	0	2	0	-425	0	0	0
5	Myburgh ,B (Bruce)	2	1391.4	966.4	0	0	0	2	1406.9	966.4	0	0	0
6	Sacks ,F (Francis)	2	0	-425	0	0	0	2	0	-425	0	0	0
6	Sacks ,F (Francis)	2	1345.1	920.1	0	0	0	2	1235	920.1	0	0	0
7	Van Vuuren ,G (Gideon)	1	1	425	0	0	0	1	1	425	0	0	0
7	Van Vuuren ,G (Gideon)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
8	Petrus ,L (Lenique)	1	1	425	0	0	0	1	1	425	0	0	0
8	Petrus ,L (Lenique)	1	1298.2	1723.2	0	0	0	1	1337.2	1723.2	0	0	0
9	January ,P (Pharrel)	1	1	425	0	0	0	1	1	425	0	0	0
9	January ,P (Pharrel)	1	1218.3	1643.3	0	0	0	1	1202.3	1643.3	0	0	0
10	Munemo ,T (Tanaka)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Munemo ,T (Tanaka)	1	1342.3	917.3	0	0	0	1	1200	917.3	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 Merwe, W (Willem Johan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms