Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Heerden, CL (Claude Leon)

Chess SA id

169039893

FIDE id

Date of birth

1969-06-23 (Adult)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1685.5	1585.3	1633.7	1782.4
Raw rating	1664.4	1568.1	1629.6	1782.4
Weighted rating	1654.1	1585.3	1633.7	1722.1
Weighted performance	1685.5	927.2	1526.2	0
Floor	1198.5	1155	1177.2	1282.4
K-factor	28	28	28	28
Min/Max rating change allowed	85.6	98.1	89.9	72.3
Highest rating	1698.5 2025-08-01	1655 2018-01-01	1677.2 2025-08-01	1782.4 2025-11-01
Highest raw rating	1698.5 2025-08-01	1655 2018-01-01	1677.2 2025-08-01	1782.4 2025-11-01
Highest weighted rating	1670.9 2018-01-01	1655 2018-01-01	1663.1 2019-08-01	1722.1 2025-11-01
Highest weighted performance	1685.5 2025-11-01	1611.6 2019-05-01	1606 2019-06-01	1695.9 2019-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-24.3	-1.9	0.9	0
New rating	1661.2	1583.3	1634.6	1782.4
Analysis
Rating	1685.5	1585.3	1633.7	1782.4
Raw rating	1664.4	1568.1	1629.6	1782.4
Weighted rating	1654.1	1585.3	1633.7
Weighted performance	1685.5	927.2	1526.2
K-factor	28	28	28	28
Floor	1198.5	1155	1177.2	1282.4
Max/Min rating change allowed	85.6	98.1	89.9	72.3
Games	5	5	0	0
Score	3.5	3.5	0	0
Expected score	3.77	3.67	0	0
Score-Expected	-0.27	-0.17	0	0
Temp raw +/-	-7.5	-4.8	0	0
Final raw +/-	-7.5	-4.8	0	0
New raw rating	1656.9	1563.3	1629.6	1782.4
New weighted rating	1655	1583.3	1634.6	1727.2
New weighted performance	1661.2	1191.3	1516	0
Temp new rating	1661.2	1583.3	1634.6	1782.4
Temp new rating +/-	-24.3	-1.9	0.9	0
Final new rating +/-	-24.3	-1.9	0.9	0
New rating	1661.2	1583.3	1634.6	1782.4
New K-factor	28	28	28	28
New floor	1198.5	1155	1177.2	1282.4

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	30	6	15	9
	6	0	6	0
	5	0	5	0
	10	5	5	0
	0	0	0	0
History	361	271	47	43

Games since
	Main 36	Standard 6		Rapid 21		Blitz 9
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	85		6		3
Male	83		5		2
Adult	60		5		3
Adult Male	58		4		2
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	30	20.5	68.33	155.8	1620.6	1776.5
Standard	6	3	50	0	1466.3	1466.3
Rapid	15	10	66.67	141.7	1626.8	1768.5
Blitz	9	7.5	83.33	283.3	1713.2	1996.5
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	145	99.5	68.62	158.3	1512.7	1671
Standard	74	45	60.81	91.9	1483.1	1575
Rapid	44	33	75	212.5	1522.2	1734.7
Blitz	27	21.5	79.63	251.9	1578.5	1830.3

Date	Main	Standard	Rapid	Blitz
2025-11-01	1664.4	1568.1	1629.6	1782.4
2025-09-30	1658.2	1568.1	1677.2	1716.9
2025-09-01	1658.2	1568.1	1677.2	1716.9
2025-08-01	1698.5	1590.4	1677.2	1716.9
2025-07-01	1656.6	1590.4	1619.2	1716.9
2025-06-01	1656.6	1590.4	1619.2	1716.9
2025-05-01	1650.3	1590.4	1630.1	1716.9
2025-04-01	1650.3	1590.4	1630.1	1716.9
2025-03-01	1650.3	1590.4	1630.1	1716.9
2025-02-01	1650.3	1590.4	1630.1	1716.9
2025-01-01	1650.3	1590.4	1630.1	1716.9
2024-12-01	1650.3	1590.4	1630.1	1716.9
2024-11-01	1650.3	1590.4	1630.1	1716.9
2024-10-01	1650.3	1590.4	1630.1	1716.9
2024-09-01	1650.3	1590.4	1630.1	1716.9
2024-08-01	1650.3	1590.4	1630.1	1716.9
2024-07-01	1650.3	1590.4	1630.1	1716.9
2024-09-01	1621	1590.4	1573.8	1716.9
2024-05-01	1621	1590.4	1573.8	1716.9
2024-04-01	1621	1590.4	1573.8	1716.9
2024-03-01	1621	1590.4	1573.8	1716.9
2024-02-01	1621	1590.4	1573.8	1716.9
2024-01-01	1621	1590.4	1573.8	1716.9
2023-12-01	1621	1590.4	1571.5	1716.9

Comming soon.

Tournaments

History

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	UCC Royal Cup 2025 (A)	2025-10-07	2025-11-05	Standard	Nelson Mandela Bay (ENM)	5	5	3.5	Yes	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	UCC Royal Cup 2025 (A)	2025-10-07	2025-11-05	Standard	Nelson Mandela Bay (ENM)	5	5	3.5	Yes	Analysis
2	2025 Mossel Bay Open (Rapid A)	2025-10-04	2025-10-04	Rapid	Eden (WEG)	7	4	1.5	Yes	Analysis
3	2025 Mossel Bay Open (Blitz)	2025-10-03	2025-10-03	Blitz	Eden (WEG)	9	9	7.5	Yes	Analysis
4	2025 Eden Open & Women's Tournament (Championship)	2025-08-23	2025-08-23	Standard	Eden (WEG)	5	2	0	Yes	Analysis
5	UCC Mind Over Board 2025 (A)	2025-08-01	2025-08-03	Standard	Nelson Mandela Bay (ENM)	5	4	3	Yes	Analysis
6	Knysna Oyster Festival Rapid 2025 (Open)	2025-07-12	2025-07-12	Rapid	Eden (WEG)	6	5	5	Yes	Analysis
7	NMBCU Open 2025 (A)	2025-05-23	2025-05-25	Standard	Nelson Mandela Bay (ENM)	6	0	0	No	Analysis
8	Southern Knights Rapid 2025 (Open)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	6	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	UCC Royal Cup 2025 (A)	2025-10-07	2025-11-05	Standard	Nelson Mandela Bay (ENM)	5	5	3.5	Yes	Analysis
2	2025 Mossel Bay Open (Rapid A)	2025-10-04	2025-10-04	Rapid	Eden (WEG)	7	4	1.5	Yes	Analysis
3	2025 Mossel Bay Open (Blitz)	2025-10-03	2025-10-03	Blitz	Eden (WEG)	9	9	7.5	Yes	Analysis
4	2025 Eden Open & Women's Tournament (Championship)	2025-08-23	2025-08-23	Standard	Eden (WEG)	5	2	0	Yes	Analysis
5	UCC Mind Over Board 2025 (A)	2025-08-01	2025-08-03	Standard	Nelson Mandela Bay (ENM)	5	4	3	Yes	Analysis
6	Knysna Oyster Festival Rapid 2025 (Open)	2025-07-12	2025-07-12	Rapid	Eden (WEG)	6	5	5	Yes	Analysis
7	NMBCU Open 2025 (A)	2025-05-23	2025-05-25	Standard	Nelson Mandela Bay (ENM)	6	0	0	No	Analysis
8	Southern Knights Rapid 2025 (Open)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	6	3.5	Yes	Analysis
9	Aston Bay 2024 (Open)	2024-05-25	2024-05-25	Rapid	Sarah Baartman (ESB)	7	6	6	Yes	Analysis
10	Knysna Oyster Festival 2023 (Open)	2023-07-01	2023-07-01	Rapid	Eden (WEG)	6	5	3.5	Yes	Analysis
11	Knysna Oyster Festival Rapid Chess 2022 (A)	2022-07-02	2022-07-02	Rapid	Eden (WEG)	5	5	4.5	Yes	Analysis
12	George Open 2022 (A)	2022-06-11	2022-06-11	Standard	Eden (WEG)	5	5	3	Yes	Analysis
13	King Cars Pe Chess Club Grand Prix Leg 1 2020	2020-02-15	2020-02-22	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
14	2019 Inter Region Chess Championships	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	3	0.5	Yes	Analysis
15	PE Chess Club Open 2019 (A)	2019-10-11	2019-10-13	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
16	Pacaltsdorp Open 2019 (A)	2019-08-30	2019-08-31	Standard	Eden (WEG)	6	6	3.5	Yes	Analysis
17	PECC King Cars Grand Prix Fourth Leg 2019	2019-08-03	2019-08-03	Rapid	Nelson Mandela Bay (ENM)	7	7	3.5	Yes	Analysis
18	Oyster Rapid Chess Festival 2019	2019-06-30	2019-06-30	Rapid	Eden (WEG)	6	6	5.5	Yes	Analysis
19	King Cars PECC Grand Prix Third Leg 2019	2019-04-27	2019-05-04	Standard	Nelson Mandela Bay (ENM)	6	5	4	Yes	Analysis
20	PECC King Cars Grand Prix Second Leg 2019	2019-04-13	2019-04-13	Blitz	Nelson Mandela Bay (ENM)	9	9	8	Yes	Analysis
21	2019 Boardwalk Pearson Open (Open)	2019-03-28	2019-03-31	Standard	Nelson Mandela Bay (ENM)	9	9	5	Yes	Analysis
22	King Cars PECC Grand Prix First Leg 2019	2019-02-02	2019-02-09	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
23	Mossel Bay Open 2018 (A)	2018-09-28	2018-09-29	Standard	Eden (WEG)	6	4	2	Yes	Analysis
24	PE Chess Club Open 2018 (A)	2018-09-21	2018-09-23	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
25	Oudtshoorn Open 2018	2018-06-29	2018-06-30	Standard	Eden (WEG)	6	6	4	Yes	Analysis
26	King Cars PECC Grand Prix Second Leg 2018	2018-04-14	2018-04-14	Blitz	Nelson Mandela Bay (ENM)	9	9	6	Yes	Analysis
27	King Cars PECC Grand Prix First Leg 2018	2018-03-03	2018-03-10	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis

#	Games	Start				End
1	11	Tournament Knysna Oyster Festival 2023				Tournament Southern Knights Rapid 2025
		date 2023-07-01	rnd 5	type Rapid	result 0.5	date 2025-05-03	rnd 4	type Rapid	result 1
		Opponent Swart, G (George)				Opponent Swart, S (Sune)
2	11	Tournament King Cars PECC Grand Prix Third Leg 2019				Tournament PECC King Cars Grand Prix Fourth Leg 2019
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-08-03	rnd 2	type Rapid	result 1
		Opponent Pienaar, KT (Keaton)				Opponent Kruger, MJ (Matthew)
3	10	Tournament PECC King Cars Grand Prix Second Leg 2019				Tournament King Cars PECC Grand Prix Third Leg 2019
		date 2019-04-13	rnd 1	type Blitz	result 1	date 2019-04-27	rnd 1	type Standard	result 1
		Opponent Van Der Merwe, L (Lucas)				Opponent Knox, S (Steven)

#	Games	Start				End
1	7	Tournament PE Chess Club Open 2018				Tournament Mossel Bay Open 2018
		date 2018-09-22	rnd 2	type Standard	result 1	date 2018-09-28	rnd 2	type Standard	result 1
		Opponent Peter, M (Mnico)				Opponent Hahn, M (Michael)
2	6	Tournament King Cars PECC Grand Prix First Leg 2019				Tournament 2019 Boardwalk Pearson Open
		date 2019-02-09	rnd 5	type Standard	result 1	date 2019-03-29	rnd 4	type Standard	result 1
		Opponent Freeman, V (Vianco)				Opponent Saffier, C (Christian)
3	5	Tournament King Cars PECC Grand Prix Third Leg 2019				Tournament Pacaltsdorp Open 2019
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-08-30	rnd 2	type Standard	result 0.5
		Opponent Pienaar, KT (Keaton)				Opponent Meyer, J (Jared)

#	Games	Start				End
1	11	Tournament Knysna Oyster Festival 2023				Tournament Southern Knights Rapid 2025
		date 2023-07-01	rnd 5	type Rapid	result 0.5	date 2025-05-03	rnd 4	type Rapid	result 1
		Opponent Swart, G (George)				Opponent Swart, S (Sune)
2	10	Tournament PECC King Cars Grand Prix Fourth Leg 2019				Tournament Knysna Oyster Festival 2023
		date 2019-08-03	rnd 6	type Rapid	result 0.5	date 2023-07-01	rnd 3	type Rapid	result 1
		Opponent Peter, NM (Neathan)				Opponent Hendricks, J (Jereldo)
3	8	Tournament Oyster Rapid Chess Festival 2019				Tournament PECC King Cars Grand Prix Fourth Leg 2019
		date 2019-06-30	rnd 1	type Rapid	result 1	date 2019-08-03	rnd 2	type Rapid	result 1
		Opponent Floors, R (Romano)				Opponent Kruger, MJ (Matthew)

#	Games	Start				End
1	14	Tournament King Cars PECC Grand Prix Second Leg 2018				Tournament PECC King Cars Grand Prix Second Leg 2019
		date 2018-04-14	rnd 5	type Blitz	result 1	date 2019-04-13	rnd 9	type Blitz	result 0.5
		Opponent Dhanjee, R (Reshna)				Opponent Stambull, RF (Ricardo)
2	2	Tournament King Cars PECC Grand Prix Second Leg 2018				Tournament King Cars PECC Grand Prix Second Leg 2018
		date 2018-04-14	rnd 2	type Blitz	result 1	date 2018-04-14	rnd 3	type Blitz	result 1
		Opponent Holroyd, K (Kea)				Opponent Van Zyl-Rudd, J (Jack)

#	Games	Start				End
1	8	Tournament King Cars PECC Grand Prix Third Leg 2019				Tournament Oyster Rapid Chess Festival 2019
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-06-30	rnd 5	type Rapid	result 1
		Opponent Pienaar, KT (Keaton)				Opponent Cloete, R (Ralph)
2	7	Tournament Aston Bay 2024				Tournament Southern Knights Rapid 2025
		date 2024-05-25	rnd 2	type Rapid	result 1	date 2025-05-03	rnd 1	type Rapid	result 1
		Opponent Munemo, T (Tanaka)				Opponent Botes, R (Renier)
3	6	Tournament King Cars PECC Grand Prix First Leg 2019				Tournament 2019 Boardwalk Pearson Open
		date 2019-02-09	rnd 5	type Standard	result 1	date 2019-03-29	rnd 4	type Standard	result 1
		Opponent Freeman, V (Vianco)				Opponent Saffier, C (Christian)

#	Games	Start				End
1	6	Tournament King Cars PECC Grand Prix First Leg 2019				Tournament 2019 Boardwalk Pearson Open
		date 2019-02-09	rnd 5	type Standard	result 1	date 2019-03-29	rnd 4	type Standard	result 1
		Opponent Freeman, V (Vianco)				Opponent Saffier, C (Christian)
2	4	Tournament King Cars PECC Grand Prix Third Leg 2019				Tournament Pacaltsdorp Open 2019
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-08-30	rnd 1	type Standard	result 1
		Opponent Pienaar, KT (Keaton)				Opponent Grispe, I (Ivor)
3	4	Tournament PE Chess Club Open 2018				Tournament Mossel Bay Open 2018
		date 2018-09-23	rnd 5	type Standard	result 1	date 2018-09-28	rnd 2	type Standard	result 1
		Opponent Jikijela, M (Musa)				Opponent Hahn, M (Michael)

#	Games	Start				End
1	7	Tournament Aston Bay 2024				Tournament Southern Knights Rapid 2025
		date 2024-05-25	rnd 2	type Rapid	result 1	date 2025-05-03	rnd 1	type Rapid	result 1
		Opponent Munemo, T (Tanaka)				Opponent Botes, R (Renier)
2	5	Tournament Knysna Oyster Festival Rapid 2025				Tournament Knysna Oyster Festival Rapid 2025
		date 2025-07-12	rnd 2	type Rapid	result 1	date 2025-07-12	rnd 6	type Rapid	result 1
		Opponent Winster, W (Wayne)				Opponent Louw, WI (Wilhelm)
3	5	Tournament Knysna Oyster Festival Rapid Chess 2022				Tournament Knysna Oyster Festival 2023
		date 2022-07-02	rnd 4	type Rapid	result 1	date 2023-07-01	rnd 3	type Rapid	result 1
		Opponent Botha, R (Ralph)				Opponent Hendricks, J (Jereldo)

#	Games	Start				End
1	4	Tournament PECC King Cars Grand Prix Second Leg 2019				Tournament PECC King Cars Grand Prix Second Leg 2019
		date 2019-04-13	rnd 1	type Blitz	result 1	date 2019-04-13	rnd 4	type Blitz	result 1
		Opponent Van Der Merwe, L (Lucas)				Opponent Strydom, D (De-Leon)
2	3	Tournament PECC King Cars Grand Prix Second Leg 2019				Tournament PECC King Cars Grand Prix Second Leg 2019
		date 2019-04-13	rnd 6	type Blitz	result 1	date 2019-04-13	rnd 8	type Blitz	result 1
		Opponent Jacobs, KT (Kevin)				Opponent Nasilowski, R (Rinus)
3	2	Tournament King Cars PECC Grand Prix Second Leg 2018				Tournament King Cars PECC Grand Prix Second Leg 2018
		date 2018-04-14	rnd 7	type Blitz	result 1	date 2018-04-14	rnd 8	type Blitz	result 1
		Opponent Nevin, TW (Tyler)				Opponent Berrange, AB (Anton)

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	Swart ,S (Sune)	5	4	255	1	1	425	3	2	141.7	1	1	425
1	Swart ,S (Sune)	5	1504.5	1759.5	1	1260.5	1929.5	3	1321.3	1646.2	1	1445.1	1929.5
2	Taute ,C (Clayden)	4	2	0	1	0	-425	2	1	0	1	1	425
2	Taute ,C (Clayden)	4	1658.5	1658.5	1	1583.3	1233.5	2	1211	1658.5	1	1975.6	2083.5
3	Nevin ,TW (Tyler William)	4	3	212.5	1	1	425	1	0	-425	2	2	425
3	Nevin ,TW (Tyler William)	4	1547.7	1760.2	1	1476.3	1972.7	1	1398	1122.7	2	1437.8	1972.7
4	Swart ,G (George)	4	2	0	0	0	0	4	2	0	0	0	0
4	Swart ,G (George)	4	1677.1	1677.1	0	0	0	4	1524.3	1677.1	0	0	0
5	Lagardien ,I (Ismaeel)	3	2	141.7	2	2	425	1	0	-425	0	0	0
5	Lagardien ,I (Ismaeel)	3	1347.1	1488.8	2	1352.5	1772.1	1	1149.9	922.1	0	0	0
6	Freeman ,V (Vianco)	3	2	141.7	2	1	0	1	1	425	0	0	0
6	Freeman ,V (Vianco)	3	1345.7	1487.3	2	1290.6	1345.7	1	1038.2	1770.7	0	0	0
7	Banks ,DA (Delano Arthur)	3	2	141.7	2	2	425	0	0	0	1	0	-425
7	Banks ,DA (Delano Arthur)	3	1462.6	1604.3	2	1503.9	1887.6	0	0	0	1	1094	1037.6
8	Dakin ,BR (Brett Russell)	3	2	141.7	1	1	425	1	0	-425	1	1	425
8	Dakin ,BR (Brett Russell)	3	1555.1	1696.8	1	1511.9	1980.1	1	1469.1	1130.1	1	1527.1	1980.1
9	Jacobs ,KT (Kevin Terence)	3	1.5	0	1	0	-425	0	0	0	2	1.5	212.5
9	Jacobs ,KT (Kevin Terence)	3	1908.6	1908.6	1	1911.8	1483.6	0	0	0	2	1893.1	2121.1
10	Van Huyssteen ,JA (Johan Abraham)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
10	Van Huyssteen ,JA (Johan Abraham)	2	1389.8	1602.3	2	1399.2	1602.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Van Heerden, CL (Claude Leon)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms