Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, R (Ruan)

Chess SA id

105089345

FIDE id

Date of birth

2005-06-02 (Adult)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-09-06

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1349.3	1357.7	786.1	750
Raw rating	1349.3	1357.7	786.1	750
Weighted rating	1349.3	1357.7	785.7	750
Weighted performance	777.2	778.1	0	0
Floor	849.3	857.7	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	134	132.4	299	314.8
Highest rating	1349.3 2024-02-01	1357.7 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1349.3 2024-02-01	1357.7 2024-02-01	786.1 2024-02-01	750 2024-02-01
Highest weighted rating	1349.3 2025-08-01	1357.7 2025-08-01	786.1 2024-11-01	750 2024-11-01
Highest weighted performance	1340.6 2019-07-01	1335.4 2019-07-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1349.3	1357.7	786.1	750
Analysis
Rating	1349.3	1357.7	786.1	750
Raw rating	1349.3	1357.7	786.1	750
Weighted rating	1349.3	1357.7	785.7
Weighted performance	777.2	778.1	0
K-factor	36	36	40	40
Floor	849.3	857.7	500	500
Max/Min rating change allowed	134	132.4	299	314.8
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	1349.3	1357.7	786.1	750
New weighted rating	1349.3	1357.7	786	750
New weighted performance	776.7	777.6	0	0
Temp new rating	1349.3	1357.7	786.1	750
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1349.3	1357.7	786.1	750
New K-factor	36	36	40	40
New floor	849.3	857.7	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	7	7	0
	5	5	0
	5	5	0
History	155	137	18

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	116	76.5	65.95	135.6	1093.8	1229.3
Standard	116	76.5	65.95	135.6	1093.8	1229.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1349.3	1357.7	786.1	750
2025-09-01	1349.3	1357.7	786.1	750
2025-08-01	1349.3	1357.7	786.1	750
2025-07-01	1349.3	1357.7	786.1	750
2025-06-01	1349.3	1357.7	786.1	750
2025-05-01	1349.3	1357.7	786.1	750
2025-04-01	1349.3	1357.7	786.1	750
2025-03-01	1349.3	1357.7	786.1	750
2025-02-01	1349.3	1357.7	786.1	750
2025-01-01	1349.3	1357.7	786.1	750
2024-12-01	1349.3	1357.7	786.1	750
2024-11-01	1349.3	1357.7	786.1	750
2024-10-01	1349.3	1357.7	786.1	750
2024-09-01	1349.3	1357.7	786.1	750
2024-08-01	1349.3	1357.7	786.1	750
2024-07-01	1349.3	1357.7	786.1	750
2024-06-01	1349.3	1357.7	786.1	750
2024-08-01	1349.3	1357.7	786.1	750
2024-04-01	1349.3	1357.7	786.1	750
2024-03-01	1349.3	1357.7	786.1	750
2024-02-01	1349.3	1357.7	786.1	750
2024-01-01	1349.3	1357.7	786.1	750
2023-12-01	1349.3	1357.7	750	750
2023-11-01	1349.3	1357.7	750	750

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	2023 Centurion Club Championships	2023-07-19	2023-09-06	Standard	Tshwane (GTP)	6	2	1.5	Yes	Analysis
2	2023 Tshwane South School District CLOSED League Championship (U17)	2023-07-29	2023-07-29	Standard	Tshwane (GTP)	5	5	4.5	Yes	Analysis
3	Ekurhuleni-North Schools Teams 2022 (U18)	2022-08-13	2022-08-13	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
4	Ekurhuleni Chess Chessa Open 2021 (B)	2021-03-27	2021-03-27	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
5	Ekurhuleni Chess Kempton Park Open 2020 (B)	2020-11-21	2020-11-21	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
6	Boksburg Chess Club Open 2019 (B)	2019-07-13	2019-07-13	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
7	2019 Gauteng Secondary Schools Individual Chess Championships (U15 Boys)	2019-05-25	2019-05-25	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
8	Ekurhuleni South School Chess 2019 (U15 Boys)	2019-05-11	2019-05-11	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
9	Primrose Chess Club Open 2019 (B)	2019-04-13	2019-04-13	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
10	South African Junior Team Championships 2018 (U14C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
11	Inter Region GE vs JHB Metro 2018 (U14B)	2018-10-06	2018-10-06	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
12	Ekurhuleni Grand Prix Open 2018 (C)	2018-09-14	2018-09-15	Standard	Ekurhuleni (GE)	6	6	4	Yes	Analysis
13	Ekurhuleni Open 2018 (C)	2018-08-18	2018-08-18	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
14	Witfield Open 2018 (C)	2018-07-21	2018-07-21	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
15	Ekurhuleni Trials 3 2018 (U14)	2018-06-16	2018-06-16	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
16	2018 Gauteng Secondary Schools Individual Chess Championships (U13 Boys)	2018-05-25	2018-05-25	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
17	Ekurhuleni South D6 Individual Finals 2018 (U13 Boys)	2018-05-19	2018-05-19	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
18	Dalpark Open 2018 (C)	2018-05-04	2018-05-05	Standard	Ekurhuleni (GE)	6	6	4.5	Yes	Analysis
19	Ekurhuleni Trials 2 2018 (U14)	2018-04-21	2018-04-21	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
20	Human Rights Day Open 2018 (C)	2018-03-21	2018-03-21	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
21	Ekurhuleni Trials 1 2018 (U14)	2018-03-10	2018-03-10	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
22	Elspark Open 2018 (C)	2018-02-10	2018-02-10	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
23	Brakpan Open 2018 (C)	2018-02-24	2018-02-24	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis

#	Games	Start				End
1	8	Tournament Ekurhuleni-North Schools Teams 2022				Tournament 2023 Centurion Club Championships
		date 2022-08-13	rnd 5	type Standard	result 1	date 2023-08-09	rnd 4	type Standard	result 0.5
		Opponent Ramashia, D (Dalton)				Opponent Maphalala, A (Andile)
2	8	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament Ekurhuleni Trials 3 2018
		date 2018-05-25	rnd 2	type Standard	result 1	date 2018-06-16	rnd 4	type Standard	result 1
		Opponent Mkhize, S (Sibongiseni)				Opponent Cloete, E (Elsje)
3	5	Tournament Inter Region GE vs JHB Metro 2018				Tournament Inter Region GE vs JHB Metro 2018
		date 2018-10-06	rnd 1	type Standard	result 1	date 2018-10-06	rnd 5	type Standard	result 0.5
		Opponent Voigt, H (Heinrich)				Opponent Chabangu, M (Mahlori)

#	Games	Start				End
1	8	Tournament Ekurhuleni-North Schools Teams 2022				Tournament 2023 Centurion Club Championships
		date 2022-08-13	rnd 5	type Standard	result 1	date 2023-08-09	rnd 4	type Standard	result 0.5
		Opponent Ramashia, D (Dalton)				Opponent Maphalala, A (Andile)
2	8	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament Ekurhuleni Trials 3 2018
		date 2018-05-25	rnd 2	type Standard	result 1	date 2018-06-16	rnd 4	type Standard	result 1
		Opponent Mkhize, S (Sibongiseni)				Opponent Cloete, E (Elsje)
3	5	Tournament Inter Region GE vs JHB Metro 2018				Tournament Inter Region GE vs JHB Metro 2018
		date 2018-10-06	rnd 1	type Standard	result 1	date 2018-10-06	rnd 5	type Standard	result 0.5
		Opponent Voigt, H (Heinrich)				Opponent Chabangu, M (Mahlori)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament Ekurhuleni Trials 3 2018
		date 2018-05-25	rnd 2	type Standard	result 1	date 2018-06-16	rnd 4	type Standard	result 1
		Opponent Mkhize, S (Sibongiseni)				Opponent Cloete, E (Elsje)
2	5	Tournament Ekurhuleni Trials 1 2018				Tournament Human Rights Day Open 2018
		date 2018-03-10	rnd 4	type Standard	result 1	date 2018-03-21	rnd 3	type Standard	result 1
		Opponent Waring, G (Gabriel)				Opponent De Beer, J (Janka)
3	4	Tournament 2023 Tshwane South School District CLOSED League Championship				Tournament 2023 Centurion Club Championships
		date 2023-07-29	rnd 3	type Standard	result 1	date 2023-08-02	rnd 3	type Standard	result 1
		Opponent Senekal, F (Frederick)				Opponent Fine, J (Jad)

#	Games	Start				End
1	8	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament Ekurhuleni Trials 3 2018
		date 2018-05-25	rnd 2	type Standard	result 1	date 2018-06-16	rnd 4	type Standard	result 1
		Opponent Mkhize, S (Sibongiseni)				Opponent Cloete, E (Elsje)
2	5	Tournament Ekurhuleni Trials 1 2018				Tournament Human Rights Day Open 2018
		date 2018-03-10	rnd 4	type Standard	result 1	date 2018-03-21	rnd 3	type Standard	result 1
		Opponent Waring, G (Gabriel)				Opponent De Beer, J (Janka)
3	4	Tournament 2023 Tshwane South School District CLOSED League Championship				Tournament 2023 Centurion Club Championships
		date 2023-07-29	rnd 3	type Standard	result 1	date 2023-08-02	rnd 3	type Standard	result 1
		Opponent Senekal, F (Frederick)				Opponent Fine, J (Jad)

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	Smit ,D (Devon)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Smit ,D (Devon)	3	1539	1114	3	1536.6	1114	0	0	0	0	0	0
2	Terblanche ,A (Annika)	3	3	425	3	3	425	0	0	0	0	0	0
2	Terblanche ,A (Annika)	3	820.2	1245.2	3	815	1245.2	0	0	0	0	0	0
3	Nash ,K (Keagan)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
3	Nash ,K (Keagan)	3	948.9	948.9	3	959.9	948.9	0	0	0	0	0	0
4	Voigt ,H (Heinrich)	2	2	425	2	2	425	0	0	0	0	0	0
4	Voigt ,H (Heinrich)	2	986.4	1411.4	2	968.3	1411.4	0	0	0	0	0	0
5	Boshoma ,C (Chifundo)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Boshoma ,C (Chifundo)	2	847.5	422.5	2	848.9	422.5	0	0	0	0	0	0
6	De Swardt ,E (Eduan)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	De Swardt ,E (Eduan)	2	1248.1	823.1	2	1242	823.1	0	0	0	0	0	0
7	Pillay ,M (Mikhael)	2	1	0	2	1	0	0	0	0	0	0	0
7	Pillay ,M (Mikhael)	2	1208.1	1208.1	2	1206.9	1208.1	0	0	0	0	0	0
8	Cloete ,E (Elsje)	2	1	0	2	1	0	0	0	0	0	0	0
8	Cloete ,E (Elsje)	2	1042.3	1042.3	2	1040.8	1042.3	0	0	0	0	0	0
9	Coetzer ,D (Daniel)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Coetzer ,D (Daniel)	2	983.1	558.1	2	986	558.1	0	0	0	0	0	0
10	Jansen ,H (Heindrich)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
10	Jansen ,H (Heindrich)	2	1098.2	885.7	2	1082	885.7	0	0	0	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, R (Ruan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms