Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, W (Waldo)

Chess SA id

1150156383

FIDE id

Date of birth

2015-10-12 (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	1240.6	1248.4	1200	1200
Raw rating	1240.6	1248.4	1200	1200
Weighted rating	1225.1	1230.4	1200	1200
Weighted performance	0	0	0	0
Floor	740.6	748.4	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	156.5	154.8	165.8	165.8
Highest rating	1240.6 2025-06-01	1248.4 2025-06-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1240.6 2025-06-01	1248.4 2025-06-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1221.3 2025-08-01	1225.8 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1216 2023-05-01	1218 2023-05-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1240.6	1248.4	1200	1200
Analysis
Rating	1240.6	1248.4	1200	1200
Raw rating	1240.6	1248.4	1200	1200
Weighted rating	1225.1	1230.4	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	740.6	748.4	700	700
Max/Min rating change allowed	156.5	154.8	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	1240.6	1248.4	1200	1200
New weighted rating	1226.9	1232.4	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1240.6	1248.4	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1240.6	1248.4	1200	1200
New K-factor	36	36	36	36
New floor	740.6	748.4	700	700

Item	Main	Standard
	0	0
	5	5
	5	5
	5	5
	0	0
	0	0
History	15	15

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	3	60	85	1266.7	1351.7
Standard	5	3	60	85	1266.7	1351.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	15	8.5	56.67	56.7	1225.9	1282.6
Standard	15	8.5	56.67	56.7	1225.9	1282.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1240.6	1248.4	1200	1200
2025-09-01	1240.6	1248.4	1200	1200
2025-08-01	1240.6	1248.4	1200	1200
2025-07-01	1240.6	1248.4	1200	1200
2025-06-01	1240.6	1248.4	1200	1200
2025-05-01	1218.5	1222.7	1200	1200
2025-04-01	1218.5	1222.7	1200	1200
2025-03-01	1218.5	1222.7	1200	1200
2025-02-01	1218.5	1222.7	1200	1200
2025-01-01	1218.5	1222.7	1200	1200
2024-12-01	1218.5	1222.7	1200	1200
2024-11-01	1218.5	1222.7	1200	1200
2024-10-01	1218.5	1222.7	1200	1200
2024-09-01	1218.5	1222.7	1200	1200
2024-08-01	1218.5	1222.7	1200	1200
2024-07-01	1218.5	1222.7	1200	1200
2024-06-01	1218.5	1222.7	1200	1200
2024-08-01	1203	1204	1200	1200
2024-04-01	1203	1204	1200	1200
2024-03-01	1203	1204	1200	1200
2024-02-01	1203	1204	1200	1200
2024-01-01	1203	1204	1200	1200
2023-12-01	1203	1204	1200	1200
2023-11-01	1203	1204	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	3	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	3	Yes	Analysis
2	2024 D2 Schools Individuals (U9)	2024-05-04	2024-05-04	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
3	D2 Schools Individuals 2023 (U9 Boys+Girls)	2023-05-13	2023-05-13	Standard	West Rand (GWR)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2024 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2024-05-04	rnd 5	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Thebyane, O (Orapeleng)				Opponent Viktor, I (Ivan)
2	3	Tournament D2 Schools Individuals 2023				Tournament 2024 D2 Schools Individuals
		date 2023-05-13	rnd 5	type Standard	result 0.5	date 2024-05-04	rnd 2	type Standard	result 1
		Opponent Mlambo, M (Mbulelo Ntsako)				Opponent Venter, S (Simone)
3	1	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 4	type Standard	result 1	date 2025-05-09	rnd 4	type Standard	result 1
		Opponent Mpati, J (Junior Onkarabile)				Opponent Mpati, J (Junior Onkarabile)

#	Games	Start				End
1	3	Tournament 2024 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2024-05-04	rnd 5	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Thebyane, O (Orapeleng)				Opponent Viktor, I (Ivan)
2	3	Tournament D2 Schools Individuals 2023				Tournament 2024 D2 Schools Individuals
		date 2023-05-13	rnd 5	type Standard	result 0.5	date 2024-05-04	rnd 2	type Standard	result 1
		Opponent Mlambo, M (Mbulelo Ntsako)				Opponent Venter, S (Simone)
3	1	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 4	type Standard	result 1	date 2025-05-09	rnd 4	type Standard	result 1
		Opponent Mpati, J (Junior Onkarabile)				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 2025 D2 Schools Individuals
		date 2024-05-04	rnd 5	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Thebyane, O (Orapeleng)				Opponent Viktor, I (Ivan)
2	2	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 2	type Standard	result 1
		Opponent Mnqwazi, M (Mbalentle)				Opponent Venter, S (Simone)
3	1	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 4	type Standard	result 1	date 2025-05-09	rnd 4	type Standard	result 1
		Opponent Mpati, J (Junior Onkarabile)				Opponent Mpati, J (Junior Onkarabile)

#	Games	Start				End
1	3	Tournament 2024 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2024-05-04	rnd 5	type Standard	result 1	date 2025-05-09	rnd 2	type Standard	result 1
		Opponent Thebyane, O (Orapeleng)				Opponent Viktor, I (Ivan)
2	2	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 2	type Standard	result 1
		Opponent Mnqwazi, M (Mbalentle)				Opponent Venter, S (Simone)
3	1	Tournament 2025 D2 Schools Individuals				Tournament 2025 D2 Schools Individuals
		date 2025-05-09	rnd 4	type Standard	result 1	date 2025-05-09	rnd 4	type Standard	result 1
		Opponent Mpati, J (Junior Onkarabile)				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	Ackermann ,C (Caleb Samuel)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Ackermann ,C (Caleb Samuel)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Botha ,AZ (Adriaan Zander)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Botha ,AZ (Adriaan Zander)	1	1293	868	1	1312.4	868	0	0	0	0	0	0
3	Gqotso ,K (Khaya)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Gqotso ,K (Khaya)	1	1161.5	736.5	1	1152.4	736.5	0	0	0	0	0	0
4	Mnqwazi ,M (Mbalentle)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mnqwazi ,M (Mbalentle)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Ninham ,G (Grant)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Ninham ,G (Grant)	1	1305.9	880.9	1	1307.9	880.9	0	0	0	0	0	0
6	Naidoo ,J (James)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Naidoo ,J (James)	1	1409.5	984.5	1	1403.1	984.5	0	0	0	0	0	0
7	Venter ,S (Simone)	1	1	425	1	1	425	0	0	0	0	0	0
7	Venter ,S (Simone)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Thebyane ,O (Orapeleng)	1	1	425	1	1	425	0	0	0	0	0	0
8	Thebyane ,O (Orapeleng)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	De Waal ,D (Dian)	1	1	425	1	1	425	0	0	0	0	0	0
9	De Waal ,D (Dian)	1	1200.5	1625.5	1	1200	1625.5	0	0	0	0	0	0
10	Van Der Merwe ,W (Wessel Arnold)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Van Der Merwe ,W (Wessel Arnold)	1	1200	775	1	1200	775	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

Van Der Merwe, W (Waldo)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms