Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, RH (Riaan Heinrich)

Chess SA id

1680100603

FIDE id

Date of birth

1968-09-17 (Adult)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-12-10

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1365.1	1365.8	1273.4	1217.9
Raw rating	1365.1	1365.8	1273.4	1217.9
Weighted rating	1365	1365.7	1273.4	1217.7
Weighted performance	921.1	592.5	0	0
Floor	865.1	865.8	773.4	717.9
K-factor	36	36	36	36
Min/Max rating change allowed	131.1	130.9	149.4	161.6
Highest rating	1365.1 2024-02-01	1365.8 2024-02-01	1546.3 2018-09-01	1217.9 2024-02-01
Highest raw rating	1365.1 2024-02-01	1365.8 2024-02-01	1273.4 2024-02-01	1217.9 2024-02-01
Highest weighted rating	1364.7 2025-08-01	1365.4 2025-08-01	1273.2 2025-08-01	1217.3 2025-08-01
Highest weighted performance	1327.2 2019-06-01	1314.7 2019-10-01	1546.3 2018-09-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1365.1	1365.8	1273.4	1217.9
Analysis
Rating	1365.1	1365.8	1273.4	1217.9
Raw rating	1365.1	1365.8	1273.4	1217.9
Weighted rating	1365	1365.7	1273.4
Weighted performance	921.1	592.5	0
K-factor	36	36	36	36
Floor	865.1	865.8	773.4	717.9
Max/Min rating change allowed	131.1	130.9	149.4	161.6
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	1365.1	1365.8	1273.4	1217.9
New weighted rating	1365.1	1365.8	1273.4	1217.9
New weighted performance	920.6	592	0	0
Temp new rating	1365.1	1365.8	1273.4	1217.9
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1365.1	1365.8	1273.4	1217.9
New K-factor	36	36	36	36
New floor	865.1	865.8	773.4	717.9

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	15	4	11	0
	0	0	0	0
	11	5	0	6
History	63	43	14	6

Games since
	Main 10	Standard 4		Rapid 6		Blitz 0
Gender	Male
Age group	Adult
Region	Overberg (WOS)
Province	Western Cape (WC)
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	63	39	61.9	101.2	1256.3	1357.5
Standard	43	27.5	63.95	118.6	1236.2	1354.8
Rapid	14	8.5	60.71	91.1	1313.6	1404.6
Blitz	6	3	50	0	1266.7	1266.7

Date	Main	Standard	Rapid	Blitz
2025-09-30	1365.1	1365.8	1273.4	1217.9
2025-09-01	1365.1	1365.8	1273.4	1217.9
2025-08-01	1365.1	1365.8	1273.4	1217.9
2025-07-01	1365.1	1365.8	1273.4	1217.9
2025-06-01	1365.1	1365.8	1273.4	1217.9
2025-05-01	1365.1	1365.8	1273.4	1217.9
2025-04-01	1365.1	1365.8	1273.4	1217.9
2025-03-01	1365.1	1365.8	1273.4	1217.9
2025-02-01	1365.1	1365.8	1273.4	1217.9
2025-01-01	1365.1	1365.8	1273.4	1217.9
2024-12-01	1365.1	1365.8	1273.4	1217.9
2024-11-01	1365.1	1365.8	1273.4	1217.9
2024-10-01	1365.1	1365.8	1273.4	1217.9
2024-09-01	1365.1	1365.8	1273.4	1217.9
2024-08-01	1365.1	1365.8	1273.4	1217.9
2024-07-01	1365.1	1365.8	1273.4	1217.9
2024-06-01	1365.1	1365.8	1273.4	1217.9
2024-08-01	1365.1	1365.8	1273.4	1217.9
2024-04-01	1365.1	1365.8	1273.4	1217.9
2024-03-01	1365.1	1365.8	1273.4	1217.9
2024-02-01	1365.1	1365.8	1273.4	1217.9
2024-01-01	1365.1	1365.8	1273.4	1217.9
2023-12-01	1365.1	1365.8	1273.4	1200.4
2023-11-01	1347.8	1343.5	1273.4	1200.4

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 Western Cape Rural Cup (Open)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	1.5	Yes	Analysis
2	Bonnievale Open Rapid 2023 (Intermediate)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
3	Hermanus Rapid 2023 (B)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	5	2	Yes	Analysis
4	OCF Club Champs 2021 (Seniors)	2021-06-05	2021-08-14	Standard	Overberg (WOS)	10	5	4.5	Yes	Analysis
5	Swellendam Blitz 2021 (Seniors)	2021-06-11	2021-06-11	Blitz	Overberg (WOS)	7	6	3	Yes	Analysis
6	2019 Western Cape Club Championship (A+B)	2019-10-25	2019-10-27	Standard	Overberg (WOS)	6	6	3.5	Yes	Analysis
7	Bontebok 2019 (U18+Open)	2019-08-17	2019-08-17	Standard	Overberg (WOS)	5	4	2.5	Yes	Analysis
8	Overberg Club Champs 2019 (A)	2019-06-15	2019-06-15	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
9	Trial 2 Teddy/Toy Tournament 2019 (Open)	2019-04-06	2019-04-06	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
10	Caledon Casino 2 2018 (Open)	2018-10-20	2018-10-20	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
11	Strategema Robertson 2018 (Open)	2018-09-08	2018-09-08	Rapid	Cape Winelands (WCW)	3	3	2.5	Yes	Analysis
12	Overberg 2nd Trial 2018 (Open)	2018-05-05	2018-05-05	Standard	Overberg (WOS)	5	4	2	Yes	Analysis
13	Overberg Chess 1st Trial 2018 (A)	2018-04-14	2018-04-14	Standard	Overberg (WOS)	5	5	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Trial 2 Teddy/Toy Tournament 2019				Tournament Overberg Club Champs 2019
		date 2019-04-06	rnd 3	type Standard	result 1	date 2019-06-15	rnd 3	type Standard	result 0.5
		Opponent Booysen, K (Keanan)				Opponent Esemene, L (Lkechukwuka)
2	5	Tournament OCF Club Champs 2021				Tournament OCF Club Champs 2021
		date 2021-08-14	rnd 6	type Standard	result 1	date 2021-08-14	rnd 10	type Standard	result 1
		Opponent Joubert, D (Danie)				Opponent Rademeyer, HP (Herman)
3	5	Tournament Strategema Robertson 2018				Tournament Caledon Casino 2 2018
		date 2018-09-08	rnd 1	type Rapid	result 0.5	date 2018-10-20	rnd 2	type Standard	result 1
		Opponent Harris, DH (David)				Opponent Steyn, A (Annemarie)

#	Games	Start				End
1	9	Tournament 2019 Western Cape Club Championship				Tournament 2023 Western Cape Rural Cup
		date 2019-10-26	rnd 4	type Standard	result 0.5	date 2023-12-09	rnd 1	type Standard	result 0.5
		Opponent Galleid, S (Stephen)				Opponent Basson, JE (Jacques)
2	6	Tournament Trial 2 Teddy/Toy Tournament 2019				Tournament Overberg Club Champs 2019
		date 2019-04-06	rnd 3	type Standard	result 1	date 2019-06-15	rnd 3	type Standard	result 0.5
		Opponent Booysen, K (Keanan)				Opponent Esemene, L (Lkechukwuka)
3	4	Tournament Bontebok 2019				Tournament 2019 Western Cape Club Championship
		date 2019-08-17	rnd 3	type Standard	result 1	date 2019-10-25	rnd 1	type Standard	result 1
		Opponent Stuurman, J (Jayden -Lee)				Opponent Stemmet, Z (Zoe)

#	Games	Start				End
1	3	Tournament Strategema Robertson 2018				Tournament Strategema Robertson 2018
		date 2018-09-08	rnd 1	type Rapid	result 0.5	date 2018-09-08	rnd 3	type Rapid	result 1
		Opponent Harris, DH (David)				Opponent Hendriks, B (Breyten)
2	2	Tournament Bonnievale Open Rapid 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-10-21	rnd 5	type Rapid	result 1	date 2023-10-21	rnd 6	type Rapid	result 1
		Opponent Nyoka, L (Lakhiwe)				Opponent Kana, Z (Zaywon)
3	2	Tournament Hermanus Rapid 2023				Tournament Hermanus Rapid 2023
		date 2023-04-22	rnd 4	type Rapid	result 1	date 2023-04-22	rnd 5	type Rapid	result 1
		Opponent De Wet, M (Malcolm)				Opponent Oosthuizen, J (Jacques)

#	Games	Start				End
1	2	Tournament Swellendam Blitz 2021				Tournament Swellendam Blitz 2021
		date 2021-06-11	rnd 3	type Blitz	result 1	date 2021-06-11	rnd 4	type Blitz	result 1
		Opponent Jacobs, LC (Lee Carlos)				Opponent Michaels, F (Franzith)
2	1	Tournament Swellendam Blitz 2021				Tournament Swellendam Blitz 2021
		date 2021-06-11	rnd 1	type Blitz	result 1	date 2021-06-11	rnd 1	type Blitz	result 1
		Opponent Smith, G (Germain)				Opponent Smith, G (Germain)

#	Games	Start				End
1	4	Tournament Strategema Robertson 2018				Tournament Caledon Casino 2 2018
		date 2018-09-08	rnd 2	type Rapid	result 1	date 2018-10-20	rnd 2	type Standard	result 1
		Opponent Simpson, O (Owen)				Opponent Steyn, A (Annemarie)
2	3	Tournament OCF Club Champs 2021				Tournament OCF Club Champs 2021
		date 2021-08-14	rnd 6	type Standard	result 1	date 2021-08-14	rnd 8	type Standard	result 1
		Opponent Joubert, D (Danie)				Opponent Scheepers, J (Joshua)
3	3	Tournament 2019 Western Cape Club Championship				Tournament Swellendam Blitz 2021
		date 2019-10-27	rnd 5	type Standard	result 1	date 2021-06-11	rnd 1	type Blitz	result 1
		Opponent Stuurman, J (Jayden -Lee)				Opponent Smith, G (Germain)

#	Games	Start				End
1	5	Tournament 2019 Western Cape Club Championship				Tournament OCF Club Champs 2021
		date 2019-10-27	rnd 5	type Standard	result 1	date 2021-08-14	rnd 8	type Standard	result 1
		Opponent Stuurman, J (Jayden -Lee)				Opponent Scheepers, J (Joshua)
2	3	Tournament Trial 2 Teddy/Toy Tournament 2019				Tournament Overberg Club Champs 2019
		date 2019-04-06	rnd 5	type Standard	result 1	date 2019-06-15	rnd 2	type Standard	result 1
		Opponent Lombaard, J (Jowayne)				Opponent Windvogel, R (Rasheed)
3	2	Tournament Bontebok 2019				Tournament 2019 Western Cape Club Championship
		date 2019-08-17	rnd 5	type Standard	result 1	date 2019-10-25	rnd 1	type Standard	result 1
		Opponent Michaels, J (Jacques)				Opponent Stemmet, Z (Zoe)

#	Games	Start				End
1	2	Tournament Bonnievale Open Rapid 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-10-21	rnd 5	type Rapid	result 1	date 2023-10-21	rnd 6	type Rapid	result 1
		Opponent Nyoka, L (Lakhiwe)				Opponent Kana, Z (Zaywon)
2	2	Tournament Hermanus Rapid 2023				Tournament Hermanus Rapid 2023
		date 2023-04-22	rnd 4	type Rapid	result 1	date 2023-04-22	rnd 5	type Rapid	result 1
		Opponent De Wet, M (Malcolm)				Opponent Oosthuizen, J (Jacques)
3	2	Tournament Strategema Robertson 2018				Tournament Strategema Robertson 2018
		date 2018-09-08	rnd 2	type Rapid	result 1	date 2018-09-08	rnd 3	type Rapid	result 1
		Opponent Simpson, O (Owen)				Opponent Hendriks, B (Breyten)

#	Games	Start				End
1	2	Tournament Swellendam Blitz 2021				Tournament Swellendam Blitz 2021
		date 2021-06-11	rnd 3	type Blitz	result 1	date 2021-06-11	rnd 4	type Blitz	result 1
		Opponent Jacobs, LC (Lee Carlos)				Opponent Michaels, F (Franzith)
2	1	Tournament Swellendam Blitz 2021				Tournament Swellendam Blitz 2021
		date 2021-06-11	rnd 1	type Blitz	result 1	date 2021-06-11	rnd 1	type Blitz	result 1
		Opponent Smith, G (Germain)				Opponent Smith, G (Germain)

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	Esemene ,L (Lkechukwuka)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
1	Esemene ,L (Lkechukwuka)	3	1272.1	988.7	3	1281.2	988.7	0	0	0	0	0	0
2	Mackenzie ,T (Tyrol)	2	2	425	2	2	425	0	0	0	0	0	0
2	Mackenzie ,T (Tyrol)	2	1123.1	1548.1	2	1108.4	1548.1	0	0	0	0	0	0
3	Stuurman ,J (Jayden -Lee)	2	2	425	2	2	425	0	0	0	0	0	0
3	Stuurman ,J (Jayden -Lee)	2	1119.7	1544.7	2	1152.2	1544.7	0	0	0	0	0	0
4	Minnie ,T (Taylin)	2	1	0	1	1	425	0	0	0	1	0	-425
4	Minnie ,T (Taylin)	2	1196.9	1196.9	1	1138.6	1621.9	0	0	0	1	1200	771.9
5	De Wet ,M (Malcolm)	2	2	425	0	0	0	2	2	425	0	0	0
5	De Wet ,M (Malcolm)	2	1337.5	1762.5	0	0	0	2	1279.2	1762.5	0	0	0
6	Eyberg ,Z (Zoe)	1	1	425	1	1	425	0	0	0	0	0	0
6	Eyberg ,Z (Zoe)	1	1364.7	1789.7	1	1384.8	1789.7	0	0	0	0	0	0
7	Roos ,R (Rico)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Roos ,R (Rico)	1	1151.9	726.9	1	1157.4	726.9	0	0	0	0	0	0
8	Jansen ,AI (Alfonso Isaac)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Jansen ,AI (Alfonso Isaac)	1	1231.4	806.4	1	1215.9	806.4	0	0	0	0	0	0
9	Meyer ,P (Peter)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Meyer ,P (Peter)	1	1235.2	1235.2	1	1236.3	1235.2	0	0	0	0	0	0
10	De Wee ,S (Stewan)	1	1	425	1	1	425	0	0	0	0	0	0
10	De Wee ,S (Stewan)	1	1224.9	1649.9	1	1229.6	1649.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Van Der Merwe, RH (Riaan Heinrich)

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms