Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, W (Wessel Arnold)

Chess SA id

1150303153

FIDE id

Date of birth

2015-08-04 (U12)

Gender

Male

Region

West Rand (GWR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1220	1223.2	1200	1200
Raw rating	1219.3	1222.3	1200	1200
Weighted rating	1220	1223.2	1200	1200
Weighted performance	0	0	0	0
Floor	724.2	728	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	161.3	160.6	165.8	165.8
Highest rating	1316.8 2024-05-01	1313.4 2024-05-01	1200 2024-06-01	1200 2024-06-01
Highest raw rating	1224.2 2024-06-01	1228 2024-06-01	1200 2024-06-01	1200 2024-06-01
Highest weighted rating	1224.2 2024-10-01	1228 2024-10-01	1200 2024-06-01	1200 2024-06-01
Highest weighted performance	1316.8 2024-05-01	1313.4 2024-05-01	1200 2024-06-01	1200 2024-06-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.3	0.3	0	0
New rating	1220.3	1223.5	1200	1200
Analysis
Rating	1220	1223.2	1200	1200
Raw rating	1219.3	1222.3	1200	1200
Weighted rating	1220	1223.2	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	724.2	728	700	700
Max/Min rating change allowed	161.3	160.6	165.8	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	1219.3	1222.3	1200	1200
New weighted rating	1220.3	1223.5	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1220.3	1223.5	1200	1200
Temp new rating +/-	0.3	0.3	0	0
Final new rating +/-	0.3	0.3	0	0
New rating	1220.3	1223.5	1200	1200
New K-factor	36	36	36	36
New floor	724.2	728	700	700

Item	Main	Standard
	0	0
	5	5
	5	5
	0	0
	0	0
	0	0
History	10	10

Games since
	Main 10	Standard 10		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	West Rand (GWR)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	5	2	40	-85	1244.9	1159.9
Standard	5	2	40	-85	1244.9	1159.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	10	5	50	0	1237.7	1237.7
Standard	10	5	50	0	1237.7	1237.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1219.3	1222.3	1200	1200
2025-09-01	1219.3	1222.3	1200	1200
2025-08-01	1219.3	1222.3	1200	1200
2025-07-01	1218.8	1221.7	1200	1200
2025-06-01	1218.1	1220.8	1200	1200
2025-05-01	1224.2	1228	1200	1200
2025-04-01	1224.2	1228	1200	1200
2025-03-01	1224.2	1228	1200	1200
2025-02-01	1224.2	1228	1200	1200
2025-01-01	1224.2	1228	1200	1200
2024-12-01	1224.2	1228	1200	1200
2024-11-01	1224.2	1228	1200	1200
2024-10-01	1224.2	1228	1200	1200
2024-09-01	1224.2	1228	1200	1200
2024-08-01	1224.2	1228	1200	1200
2024-07-01	1224.2	1228	1200	1200
2024-06-01	1224.2	1228	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	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	2025 D2 Schools Individuals (U11 Open)	2025-05-09	2025-05-09	Standard	West Rand (GWR)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 D2 Schools Individuals (U11 Open)	2025-05-09	2025-05-09	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
2	2024 D2 Schools Individuals (U9)	2024-05-04	2024-05-04	Standard	West Rand (GWR)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2024 D2 Schools Individuals				Tournament 2024 D2 Schools Individuals
		date 2024-05-04	rnd 1	type Standard	result 1	date 2024-05-04	rnd 3	type Standard	result 1
		Opponent Attwood, C (Chloe Lee)				Opponent Van Der Merwe, W (Waldo)
2	2	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Moagesi, S (Sibusiso)				Opponent Mpati, J (Junior Onkarabile)

#	Games	Start				End
1	3	Tournament 2024 D2 Schools Individuals				Tournament 2024 D2 Schools Individuals
		date 2024-05-04	rnd 1	type Standard	result 1	date 2024-05-04	rnd 3	type Standard	result 1
		Opponent Attwood, C (Chloe Lee)				Opponent Van Der Merwe, W (Waldo)
2	2	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Moagesi, S (Sibusiso)				Opponent Mpati, J (Junior Onkarabile)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2024 D2 Schools Individuals				Tournament 2024 D2 Schools Individuals
		date 2024-05-04	rnd 1	type Standard	result 1	date 2024-05-04	rnd 3	type Standard	result 1
		Opponent Attwood, C (Chloe Lee)				Opponent Van Der Merwe, W (Waldo)
2	2	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Moagesi, S (Sibusiso)				Opponent Mpati, J (Junior Onkarabile)

#	Games	Start				End
1	3	Tournament 2024 D2 Schools Individuals				Tournament 2024 D2 Schools Individuals
		date 2024-05-04	rnd 1	type Standard	result 1	date 2024-05-04	rnd 3	type Standard	result 1
		Opponent Attwood, C (Chloe Lee)				Opponent Van Der Merwe, W (Waldo)
2	2	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Moagesi, S (Sibusiso)				Opponent Mpati, J (Junior Onkarabile)

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	Willemse ,B (Bernard)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Willemse ,B (Bernard)	2	1335.8	910.8	2	1332.9	910.8	0	0	0	0	0	0
2	Vis ,K (Katlego)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Vis ,K (Katlego)	1	1397.6	972.6	1	1395	972.6	0	0	0	0	0	0
3	Mpanza ,U (Uzamokkuhle)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Mpanza ,U (Uzamokkuhle)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Ntokwe ,T (Tshepiso)	1	1	425	1	1	425	0	0	0	0	0	0
4	Ntokwe ,T (Tshepiso)	1	1104.9	1529.9	1	1091.3	1529.9	0	0	0	0	0	0
5	Moagesi ,S (Sibusiso)	1	1	425	1	1	425	0	0	0	0	0	0
5	Moagesi ,S (Sibusiso)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Attwood ,C (Chloe Lee)	1	1	425	1	1	425	0	0	0	0	0	0
6	Attwood ,C (Chloe Lee)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Van Der Merwe ,W (Waldo)	1	1	425	1	1	425	0	0	0	0	0	0
7	Van Der Merwe ,W (Waldo)	1	1203	1628	1	1204	1628	0	0	0	0	0	0
8	Jordaan ,Z (Zander)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Jordaan ,Z (Zander)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Mpati ,J (Junior Onkarabile)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mpati ,J (Junior Onkarabile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

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PLAYER PAGE

Personal

Van Der Merwe, W (Wessel Arnold)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms