Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, IJ (Izak Johannes)

Chess SA id

107077000

FIDE id

Date of birth

2007-01-06 (U20)

Gender

Male

Region

Capricorn (LCP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2018-02-24

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	727.1	735	721	735
Raw rating	727.1	735	721	735
Weighted rating	727.1	735	721	735
Weighted performance	0	0	0	0
Floor	500	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	325.3	321.6	328.1	321.6
Highest rating	1200 2024-11-01	1200 2024-02-01	1200 2024-11-01	1200 2024-02-01
Highest raw rating	735 2018-02-01	735 2024-02-01	735 2018-02-01	735 2024-02-01
Highest weighted rating	735 2024-11-01	735 2024-11-01	735 2024-11-01	735 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-02-01	1200 2024-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	727.1	735	721	735
Analysis
Rating	727.1	735	721	735
Raw rating	727.1	735	721	735
Weighted rating	727.1	735	721
Weighted performance	0	0	0
K-factor	40	40	40	40
Floor	500	500	500	500
Max/Min rating change allowed	325.3	321.6	328.1	321.6
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	727.1	735	721	735
New weighted rating	727.1	735	721	735
New weighted performance	0	0	0	0
Temp new rating	727.1	735	721	735
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	727.1	735	721	735
New K-factor	40	40	40	40
New floor	500	500	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	36	27	9

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Capricorn (LCP)
Province	Limpopo (LP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	4	1	25	-212.5	882.6	670.1
Standard	0	0	0	0	0	0
Rapid	4	1	25	-212.5	882.6	670.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	727.1	735	721	735
2025-09-01	727.1	735	721	735
2025-08-01	727.1	735	721	735
2025-07-01	727.1	735	721	735
2025-06-01	727.1	735	721	735
2025-05-01	727.1	735	721	735
2025-04-01	727.1	735	721	735
2025-03-01	727.1	735	721	735
2025-02-01	727.1	735	721	735
2025-01-01	727.1	735	721	735
2024-12-01	727.1	735	721	735
2024-11-01	727.1	735	721	735
2024-10-01	727.1	735	721	735
2024-09-01	727.1	735	721	735
2024-08-01	727.1	735	721	735
2024-07-01	727.1	735	721	735
2024-06-01	727.1	735	721	735
2024-08-01	727.1	735	721	735
2024-04-01	727.1	735	721	735
2024-03-01	727.1	735	721	735
2024-02-01	727.1	735	721	735
2024-01-01	727.1	735	721	735
2023-12-01	727.1	735	721	735
2023-11-01	727.1	735	721	735

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	Welgemoed Chess Challenge 2018 (U12)	2018-02-24	2018-02-24	Rapid	Cape Town (WCT)	5	4	1	Yes	Analysis

#	Games	Start				End
1	1	Tournament Welgemoed Chess Challenge 2018				Tournament Welgemoed Chess Challenge 2018
		date 2018-02-24	rnd 5	type Rapid	result 1	date 2018-02-24	rnd 5	type Rapid	result 1
		Opponent Marcus, E (Emarcia)				Opponent Marcus, E (Emarcia)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Welgemoed Chess Challenge 2018				Tournament Welgemoed Chess Challenge 2018
		date 2018-02-24	rnd 5	type Rapid	result 1	date 2018-02-24	rnd 5	type Rapid	result 1
		Opponent Marcus, E (Emarcia)				Opponent Marcus, E (Emarcia)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Welgemoed Chess Challenge 2018				Tournament Welgemoed Chess Challenge 2018
		date 2018-02-24	rnd 5	type Rapid	result 1	date 2018-02-24	rnd 5	type Rapid	result 1
		Opponent Marcus, E (Emarcia)				Opponent Marcus, E (Emarcia)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Welgemoed Chess Challenge 2018				Tournament Welgemoed Chess Challenge 2018
		date 2018-02-24	rnd 5	type Rapid	result 1	date 2018-02-24	rnd 5	type Rapid	result 1
		Opponent Marcus, E (Emarcia)				Opponent Marcus, E (Emarcia)

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	Davids ,RC (Ross)	1	0	-425	0	0	0	1	0	-425	0	0	0
1	Davids ,RC (Ross)	1	510.2	85.2	0	0	0	1	510.2	85.2	0	0	0
2	Vorster ,P (Paul)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Vorster ,P (Paul)	1	1200	775	0	0	0	1	1200	775	0	0	0
3	Marcus ,E (Emarcia)	1	1	425	0	0	0	1	1	425	0	0	0
3	Marcus ,E (Emarcia)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
4	Van Beeck ,T (Trinity)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Van Beeck ,T (Trinity)	1	620.3	195.3	0	0	0	1	604.6	195.3	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Van Der Merwe, IJ (Izak Johannes)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms