Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Klerk, R (Riaan)

Chess SA id

1750146548

FIDE id

Date of birth

1975-05-11 (Adult)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-09-12

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1302.7	1315.9	1260.6	1264.5
Raw rating	1302.7	1315.9	1260.6	1264.5
Weighted rating	1302.6	1315.5	1260.4	1264
Weighted performance	0	0	0	0
Floor	802.7	815.9	766	764.5
K-factor	36	36	36	36
Min/Max rating change allowed	143.3	140.6	152.1	151.3
Highest rating	1385.9 2023-05-01	1422.6 2023-05-01	1476.5 2023-03-01	1313.3 2022-09-01
Highest raw rating	1302.7 2024-02-01	1315.9 2024-02-01	1266 2023-04-01	1264.5 2024-02-01
Highest weighted rating	1302.3 2025-08-01	1314.6 2025-08-01	1266 2025-02-01	1262.9 2025-08-01
Highest weighted performance	1385.9 2023-05-01	1422.6 2023-05-01	1476.5 2023-03-01	1313.3 2022-09-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1302.7	1315.9	1260.6	1264.5
Analysis
Rating	1302.7	1315.9	1260.6	1264.5
Raw rating	1302.7	1315.9	1260.6	1264.5
Weighted rating	1302.6	1315.5	1260.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	802.7	815.9	766	764.5
Max/Min rating change allowed	143.3	140.6	152.1	151.3
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	1302.7	1315.9	1260.6	1264.5
New weighted rating	1302.6	1315.8	1260.5	1264.3
New weighted performance	0	0	0	0
Temp new rating	1302.7	1315.9	1260.6	1264.5
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1302.7	1315.9	1260.6	1264.5
New K-factor	36	36	36	36
New floor	802.7	815.9	766	764.5

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	16	8	8	0
	7	0	0	7
	0	0	0	0
History	23	8	8	7

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
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	23	12.5	54.35	37	1401.3	1438.3
Standard	8	4.5	56.25	53.1	1366.4	1419.5
Rapid	8	5	62.5	106.2	1357	1463.2
Blitz	7	3	42.86	-60.7	1491.8	1431.1

Date	Main	Standard	Rapid	Blitz
2025-09-30	1302.7	1315.9	1260.6	1264.5
2025-09-01	1302.7	1315.9	1260.6	1264.5
2025-08-01	1302.7	1315.9	1260.6	1264.5
2025-07-01	1302.7	1315.9	1260.6	1264.5
2025-06-01	1302.7	1315.9	1260.6	1264.5
2025-05-01	1302.7	1315.9	1260.6	1264.5
2025-04-01	1302.7	1315.9	1260.6	1264.5
2025-03-01	1302.7	1315.9	1260.6	1264.5
2025-02-01	1302.7	1315.9	1260.6	1264.5
2025-01-01	1302.7	1315.9	1260.2	1264.5
2024-12-01	1302.7	1315.9	1260.2	1264.5
2024-11-01	1302.7	1315.9	1260.2	1264.5
2024-10-01	1302.7	1315.9	1260.2	1264.5
2024-09-01	1302.7	1315.9	1260.2	1264.5
2024-08-01	1302.7	1315.9	1260.2	1264.5
2024-07-01	1302.7	1315.9	1260.2	1264.5
2024-06-01	1302.7	1315.9	1260.2	1264.5
2024-08-01	1302.7	1315.9	1260.2	1264.5
2024-04-01	1302.7	1315.9	1260.2	1264.5
2024-03-01	1302.7	1315.9	1260.2	1264.5
2024-02-01	1302.7	1315.9	1260.2	1264.5
2024-01-01	1302.7	1315.9	1260.2	1264.5
2023-12-01	1293	1277.6	1260.2	1216.8
2023-11-01	1293	1277.6	1260.2	1216.8

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	Uitenhage Chess Club RAPID III 2023	2023-08-29	2023-09-12	Rapid	Nelson Mandela Bay (ENM)	6	2	1	Yes	Analysis
2	UCC Protea Cup 2023 (A)	2023-04-14	2023-05-30	Standard	Nelson Mandela Bay (ENM)	8	8	4.5	Yes	Analysis
3	Uitenhage Chess Club Inaugural Rapid Tournament 2023	2023-02-21	2023-03-27	Rapid	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	2022 Madibaz Tournament (Open Blitz)	2022-09-09	2022-09-09	Blitz	Nelson Mandela Bay (ENM)	7	7	3	Yes	Analysis

#	Games	Start				End
1	5	Tournament UCC Protea Cup 2023				Tournament Uitenhage Chess Club RAPID III 2023
		date 2023-05-09	rnd 5	type Standard	result 0.5	date 2023-08-29	rnd 1	type Rapid	result 1
		Opponent Van Huyssteen, H (Hermanus)				Opponent Van Greunen, W (Willem)
2	3	Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023				Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023
		date 2023-02-21	rnd 1	type Rapid	result 1	date 2023-02-28	rnd 3	type Rapid	result 1
		Opponent Williams, M (Matthew)				Opponent Van Der Bank, Z (Zak)
3	2	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 3	type Blitz	result 1
		Opponent Tshingila, C (Cwenga)				Opponent Freeman, V (Vianco)

#	Games	Start				End
1	4	Tournament UCC Protea Cup 2023				Tournament UCC Protea Cup 2023
		date 2023-05-09	rnd 5	type Standard	result 0.5	date 2023-05-30	rnd 8	type Standard	result 1
		Opponent Van Huyssteen, H (Hermanus)				Opponent Muller, BM (Benjamin)
2	1	Tournament UCC Protea Cup 2023				Tournament UCC Protea Cup 2023
		date 2023-04-25	rnd 3	type Standard	result 1	date 2023-04-25	rnd 3	type Standard	result 1
		Opponent Matthews, R (Roger)				Opponent Matthews, R (Roger)
3	1	Tournament UCC Protea Cup 2023				Tournament UCC Protea Cup 2023
		date 2023-04-14	rnd 1	type Standard	result 1	date 2023-04-14	rnd 1	type Standard	result 1
		Opponent Slabbert, D (Deon)				Opponent Slabbert, D (Deon)

#	Games	Start				End
1	3	Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023				Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023
		date 2023-02-21	rnd 1	type Rapid	result 1	date 2023-02-28	rnd 3	type Rapid	result 1
		Opponent Williams, M (Matthew)				Opponent Van Der Bank, Z (Zak)
2	1	Tournament Uitenhage Chess Club RAPID III 2023				Tournament Uitenhage Chess Club RAPID III 2023
		date 2023-08-29	rnd 1	type Rapid	result 1	date 2023-08-29	rnd 1	type Rapid	result 1
		Opponent Van Greunen, W (Willem)				Opponent Van Greunen, W (Willem)
3	1	Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023				Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023
		date 2023-03-07	rnd 5	type Rapid	result 1	date 2023-03-07	rnd 5	type Rapid	result 1
		Opponent Nel, D (Deon)				Opponent Nel, D (Deon)

#	Games	Start				End
1	2	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 3	type Blitz	result 1
		Opponent Tshingila, C (Cwenga)				Opponent Freeman, V (Vianco)
2	1	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 6	type Blitz	result 1	date 2022-09-09	rnd 6	type Blitz	result 1
		Opponent Louis, C (Caitlyn)				Opponent Louis, C (Caitlyn)

#	Games	Start				End
1	3	Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023				Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023
		date 2023-02-21	rnd 1	type Rapid	result 1	date 2023-02-28	rnd 3	type Rapid	result 1
		Opponent Williams, M (Matthew)				Opponent Van Der Bank, Z (Zak)
2	2	Tournament UCC Protea Cup 2023				Tournament Uitenhage Chess Club RAPID III 2023
		date 2023-05-30	rnd 8	type Standard	result 1	date 2023-08-29	rnd 1	type Rapid	result 1
		Opponent Muller, BM (Benjamin)				Opponent Van Greunen, W (Willem)
3	2	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 3	type Blitz	result 1
		Opponent Tshingila, C (Cwenga)				Opponent Freeman, V (Vianco)

#	Games	Start				End
1	1	Tournament UCC Protea Cup 2023				Tournament UCC Protea Cup 2023
		date 2023-05-30	rnd 8	type Standard	result 1	date 2023-05-30	rnd 8	type Standard	result 1
		Opponent Muller, BM (Benjamin)				Opponent Muller, BM (Benjamin)
2	1	Tournament UCC Protea Cup 2023				Tournament UCC Protea Cup 2023
		date 2023-04-25	rnd 3	type Standard	result 1	date 2023-04-25	rnd 3	type Standard	result 1
		Opponent Matthews, R (Roger)				Opponent Matthews, R (Roger)
3	1	Tournament UCC Protea Cup 2023				Tournament UCC Protea Cup 2023
		date 2023-04-14	rnd 1	type Standard	result 1	date 2023-04-14	rnd 1	type Standard	result 1
		Opponent Slabbert, D (Deon)				Opponent Slabbert, D (Deon)

#	Games	Start				End
1	3	Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023				Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023
		date 2023-02-21	rnd 1	type Rapid	result 1	date 2023-02-28	rnd 3	type Rapid	result 1
		Opponent Williams, M (Matthew)				Opponent Van Der Bank, Z (Zak)
2	1	Tournament Uitenhage Chess Club RAPID III 2023				Tournament Uitenhage Chess Club RAPID III 2023
		date 2023-08-29	rnd 1	type Rapid	result 1	date 2023-08-29	rnd 1	type Rapid	result 1
		Opponent Van Greunen, W (Willem)				Opponent Van Greunen, W (Willem)
3	1	Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023				Tournament Uitenhage Chess Club Inaugural Rapid Tournament 2023
		date 2023-03-07	rnd 5	type Rapid	result 1	date 2023-03-07	rnd 5	type Rapid	result 1
		Opponent Nel, D (Deon)				Opponent Nel, D (Deon)

#	Games	Start				End
1	2	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 2	type Blitz	result 1	date 2022-09-09	rnd 3	type Blitz	result 1
		Opponent Tshingila, C (Cwenga)				Opponent Freeman, V (Vianco)
2	1	Tournament 2022 Madibaz Tournament				Tournament 2022 Madibaz Tournament
		date 2022-09-09	rnd 6	type Blitz	result 1	date 2022-09-09	rnd 6	type Blitz	result 1
		Opponent Louis, C (Caitlyn)				Opponent Louis, C (Caitlyn)

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	Strydom ,JP (Jean-Pierre)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Strydom ,JP (Jean-Pierre)	2	1471	1046	1	1426.5	1046	1	1502.3	1046	0	0	0
2	Van Huyssteen ,H (Hermanus)	2	1.5	212.5	1	0.5	0	1	1	425	0	0	0
2	Van Huyssteen ,H (Hermanus)	2	1333.4	1545.9	1	1345.1	1333.4	1	1277.4	1758.4	0	0	0
3	Matthews ,R (Roger)	1	1	425	1	1	425	0	0	0	0	0	0
3	Matthews ,R (Roger)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Jordaan ,CS (Charles Shaun)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
4	Jordaan ,CS (Charles Shaun)	1	1404	1404	1	1378.2	1404	0	0	0	0	0	0
5	Muller ,BM (Benjamin Michael)	1	1	425	1	1	425	0	0	0	0	0	0
5	Muller ,BM (Benjamin Michael)	1	1268.1	1693.1	1	1251.5	1693.1	0	0	0	0	0	0
6	Anthony ,D (Deon)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Anthony ,D (Deon)	1	1653.2	1653.2	1	1664.2	1653.2	0	0	0	0	0	0
7	Van Der Bank ,RO (Ronald)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Van Der Bank ,RO (Ronald)	1	1238.5	813.5	1	1223.6	813.5	0	0	0	0	0	0
8	Slabbert ,D (Deon)	1	1	425	1	1	425	0	0	0	0	0	0
8	Slabbert ,D (Deon)	1	1359.6	1784.6	1	1354.6	1784.6	0	0	0	0	0	0
9	Nel ,D (Deon)	1	1	425	0	0	0	1	1	425	0	0	0
9	Nel ,D (Deon)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Williams ,M (Matthew)	1	1	425	0	0	0	1	1	425	0	0	0
10	Williams ,M (Matthew)	1	1200	1625	0	0	0	1	1200	1625	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

De Klerk, R (Riaan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms