Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, B (Blake)

Chess SA id

1150191035

FIDE id

Date of birth

2015-04-03 (U12)

Gender

Male

Region

iLembe (KIK)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-11-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1224.7	1232	1199.8	1200
Raw rating	1224.6	1232	1199.8	1200
Weighted rating	1224.7	1232	1199.8	1200
Weighted performance	0	0	0	0
Floor	726.6	732	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	160.1	158.4	165.9	165.8
Highest rating	1401.4 2023-11-01	1401.8 2023-11-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1226.6 2024-02-01	1232 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1224.6 2025-08-01	1231.7 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1401.4 2023-11-01	1401.8 2023-11-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.1	0	0	0
New rating	1224.6	1232	1199.8	1200
Analysis
Rating	1224.7	1232	1199.8	1200
Raw rating	1224.6	1232	1199.8	1200
Weighted rating	1224.7	1232	1199.8
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	726.6	732	700	700
Max/Min rating change allowed	160.1	158.4	165.9	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	1224.6	1232	1199.8	1200
New weighted rating	1224.6	1232	1199.8	1200
New weighted performance	0	0	0	0
Temp new rating	1224.6	1232	1199.8	1200
Temp new rating +/-	-0.1	0	0	0
Final new rating +/-	-0.1	0	0	0
New rating	1224.6	1232	1199.8	1200
New K-factor	36	36	36	36
New floor	726.6	732	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	0	5
	4	4	0
	0	0	0
	0	0	0
History	9	4	5

Games since
	Main 9	Standard 4		Rapid 5		Blitz 0
Gender	Male
Age group	U12
Region	iLembe (KIK)
Province	KwaZulu Natal (KZ)
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	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	9	5.5	61.11	94.4	1172	1266.5
Standard	4	3	75	212.5	1175.6	1388.1
Rapid	5	2.5	50	0	1169.2	1169.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1224.6	1232	1199.8	1200
2025-09-01	1224.6	1232	1199.8	1200
2025-08-01	1224.6	1232	1199.8	1200
2025-07-01	1224.4	1232	1199.8	1200
2025-06-01	1224.1	1232	1199.8	1200
2025-05-01	1223.8	1232	1199.8	1200
2025-04-01	1223.4	1232	1199.8	1200
2025-03-01	1223	1232	1199.8	1200
2025-02-01	1222.4	1232	1199.7	1200
2025-01-01	1220.3	1232	1198.2	1200
2024-12-01	1226.6	1232	1200	1200
2024-11-01	1226.6	1232	1200	1200
2024-10-01	1226.6	1232	1200	1200
2024-09-01	1226.6	1232	1200	1200
2024-08-01	1226.6	1232	1200	1200
2024-07-01	1226.6	1232	1200	1200
2024-06-01	1226.6	1232	1200	1200
2024-08-01	1226.6	1232	1200	1200
2024-04-01	1226.6	1232	1200	1200
2024-03-01	1226.6	1232	1200	1200
2024-02-01	1226.6	1232	1200	1200
2024-01-01	1226.6	1232	1200	1200
2023-12-01	1226.6	1232	1200	1200
2023-11-01	1226.6	1232	1200	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	Umhlali Preparatory Inter House Chess 2024 (Grade 3)	2024-11-27	2024-11-27	Rapid	iLembe (KIK)	5	5	2.5	Yes	Analysis
2	Umhlali Prep Inter House Chess 2023 (Grade 2)	2023-11-29	2023-11-29	Standard	iLembe (KIK)	4	4	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 4	type Rapid	result 1	date 2024-11-27	rnd 5	type Rapid	result 0.5
		Opponent Naidu, P (Porshlyn)				Opponent Nyman, A (Axton)
2	2	Tournament Umhlali Prep Inter House Chess 2023				Tournament Umhlali Prep Inter House Chess 2023
		date 2023-11-29	rnd 1	type Standard	result 1	date 2023-11-29	rnd 2	type Standard	result 1
		Opponent Egan, M (Makayla)				Opponent Boshoff, M (Matthew)
3	1	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 2	type Rapid	result 1	date 2024-11-27	rnd 2	type Rapid	result 1
		Opponent Bunyard, B (Brooklyn)				Opponent Bunyard, B (Brooklyn)

#	Games	Start				End
1	2	Tournament Umhlali Prep Inter House Chess 2023				Tournament Umhlali Prep Inter House Chess 2023
		date 2023-11-29	rnd 1	type Standard	result 1	date 2023-11-29	rnd 2	type Standard	result 1
		Opponent Egan, M (Makayla)				Opponent Boshoff, M (Matthew)
2	1	Tournament Umhlali Prep Inter House Chess 2023				Tournament Umhlali Prep Inter House Chess 2023
		date 2023-11-29	rnd 4	type Standard	result 1	date 2023-11-29	rnd 4	type Standard	result 1
		Opponent Brassey, K (Kate)				Opponent Brassey, K (Kate)

#	Games	Start				End
1	2	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 4	type Rapid	result 1	date 2024-11-27	rnd 5	type Rapid	result 0.5
		Opponent Naidu, P (Porshlyn)				Opponent Nyman, A (Axton)
2	1	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 2	type Rapid	result 1	date 2024-11-27	rnd 2	type Rapid	result 1
		Opponent Bunyard, B (Brooklyn)				Opponent Bunyard, B (Brooklyn)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Umhlali Prep Inter House Chess 2023				Tournament Umhlali Prep Inter House Chess 2023
		date 2023-11-29	rnd 1	type Standard	result 1	date 2023-11-29	rnd 2	type Standard	result 1
		Opponent Egan, M (Makayla)				Opponent Boshoff, M (Matthew)
2	1	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 4	type Rapid	result 1	date 2024-11-27	rnd 4	type Rapid	result 1
		Opponent Naidu, P (Porshlyn)				Opponent Naidu, P (Porshlyn)
3	1	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 2	type Rapid	result 1	date 2024-11-27	rnd 2	type Rapid	result 1
		Opponent Bunyard, B (Brooklyn)				Opponent Bunyard, B (Brooklyn)

#	Games	Start				End
1	2	Tournament Umhlali Prep Inter House Chess 2023				Tournament Umhlali Prep Inter House Chess 2023
		date 2023-11-29	rnd 1	type Standard	result 1	date 2023-11-29	rnd 2	type Standard	result 1
		Opponent Egan, M (Makayla)				Opponent Boshoff, M (Matthew)
2	1	Tournament Umhlali Prep Inter House Chess 2023				Tournament Umhlali Prep Inter House Chess 2023
		date 2023-11-29	rnd 4	type Standard	result 1	date 2023-11-29	rnd 4	type Standard	result 1
		Opponent Brassey, K (Kate)				Opponent Brassey, K (Kate)

#	Games	Start				End
1	1	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 4	type Rapid	result 1	date 2024-11-27	rnd 4	type Rapid	result 1
		Opponent Naidu, P (Porshlyn)				Opponent Naidu, P (Porshlyn)
2	1	Tournament Umhlali Preparatory Inter House Chess 2024				Tournament Umhlali Preparatory Inter House Chess 2024
		date 2024-11-27	rnd 2	type Rapid	result 1	date 2024-11-27	rnd 2	type Rapid	result 1
		Opponent Bunyard, B (Brooklyn)				Opponent Bunyard, B (Brooklyn)

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	Brassey ,K (Kate)	1	1	425	1	1	425	0	0	0	0	0	0
1	Brassey ,K (Kate)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Boshoff ,M (Matthew)	1	1	425	1	1	425	0	0	0	0	0	0
2	Boshoff ,M (Matthew)	1	1199	1624	1	1200	1624	0	0	0	0	0	0
3	Egan ,M (Makayla)	1	1	425	1	1	425	0	0	0	0	0	0
3	Egan ,M (Makayla)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Clifford ,B (Benedict)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Clifford ,B (Benedict)	1	1103.4	678.4	1	1104	678.4	0	0	0	0	0	0
5	Bunyard ,B (Brooklyn)	1	1	425	0	0	0	1	1	425	0	0	0
5	Bunyard ,B (Brooklyn)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
6	Nicolay ,A (Adam)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Nicolay ,A (Adam)	1	1165.8	740.8	0	0	0	1	1198.4	740.8	0	0	0
7	Naidu ,P (Porshlyn)	1	1	425	0	0	0	1	1	425	0	0	0
7	Naidu ,P (Porshlyn)	1	1167.1	1592.1	0	0	0	1	1200	1592.1	0	0	0
8	Nyman ,A (Axton)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
8	Nyman ,A (Axton)	1	1185.4	1185.4	0	0	0	1	1200	1185.4	0	0	0
9	Wilson ,L (Luke)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Wilson ,L (Luke)	1	1127.5	702.5	0	0	0	1	1122.8	702.5	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Van Der Merwe, B (Blake)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms