Chess South Africa Ratings Database

PLAYER PAGE

Personal

Du Preez, JL (Johannes Lourens)

Chess SA id

191008051

FIDE id

Date of birth

1991-04-27 (Adult)

Gender

Male

Region

Ethekwini (KED)

Citizen

RSA

Titles

Chess SA registered

Last active game

2018-11-15

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1446	1446	1362.1	1372.5
Raw rating	1446	1446	1362.1	1372.5
Weighted rating	1445.9	1445.8	1362.1	1372.5
Weighted performance	0	0	0	0
Floor	946	946	862.1	872.5
K-factor	32	32	36	36
Min/Max rating change allowed	116.8	116.8	131.6	129.7
Highest rating	1512.7 2018-04-01	1518.4 2018-04-01	1463.4 2018-07-01	1475.1 2018-10-01
Highest raw rating	1446 2024-02-01	1446 2024-02-01	1362.1 2024-02-01	1372.5 2024-02-01
Highest weighted rating	1445.7 2025-08-01	1445.4 2025-08-01	1362.1 2024-02-01	1372.5 2024-02-01
Highest weighted performance	1512.7 2018-04-01	1518.4 2018-04-01	1463.4 2018-07-01	1475.1 2018-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1446	1446	1362.1	1372.5
Analysis
Rating	1446	1446	1362.1	1372.5
Raw rating	1446	1446	1362.1	1372.5
Weighted rating	1445.9	1445.8	1362.1
Weighted performance	0	0	0
K-factor	32	32	36	36
Floor	946	946	862.1	872.5
Max/Min rating change allowed	116.8	116.8	131.6	129.7
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	1446	1446	1362.1	1372.5
New weighted rating	1446	1445.9	1362.1	1372.5
New weighted performance	0	0	0	0
Temp new rating	1446	1446	1362.1	1372.5
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1446	1446	1362.1	1372.5
New K-factor	32	32	36	36
New floor	946	946	862.1	872.5

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	88	66	14	8

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Ethekwini (KED)
Province	KwaZulu Natal (KZ)
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	38	23.5	61.84	100.7	1381.2	1481.8
Standard	22	12.5	56.82	58	1419.7	1477.6
Rapid	8	5	62.5	106.2	1339.1	1445.3
Blitz	8	6	75	212.5	1317.4	1529.9

Date	Main	Standard	Rapid	Blitz
2025-09-30	1446	1446	1362.1	1372.5
2025-09-01	1446	1446	1362.1	1372.5
2025-08-01	1446	1446	1362.1	1372.5
2025-07-01	1446	1446	1362.1	1372.5
2025-06-01	1446	1446	1362.1	1372.5
2025-05-01	1446	1446	1362.1	1372.5
2025-04-01	1446	1446	1362.1	1372.5
2025-03-01	1446	1446	1362.1	1372.5
2025-02-01	1446	1446	1362.1	1372.5
2025-01-01	1446	1446	1362.1	1372.5
2024-12-01	1446	1446	1362.1	1372.5
2024-11-01	1446	1446	1362.1	1372.5
2024-10-01	1446	1446	1362.1	1372.5
2024-09-01	1446	1446	1362.1	1372.5
2024-08-01	1446	1446	1362.1	1372.5
2024-07-01	1446	1446	1362.1	1372.5
2024-06-01	1446	1446	1362.1	1372.5
2024-08-01	1446	1446	1362.1	1372.5
2024-04-01	1446	1446	1362.1	1372.5
2024-03-01	1446	1446	1362.1	1372.5
2024-02-01	1446	1446	1362.1	1372.5
2024-01-01	1446	1446	1362.1	1372.5
2023-12-01	1436.8	1429.4	1362.1	1372.5
2023-11-01	1436.8	1429.4	1362.1	1372.5

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	2018 Durban CC Third Swiss	2018-10-11	2018-11-15	Standard	Ethekwini (KED)	6	3	2	Yes	Analysis
2	2018 Mhlongo Memorial Blitz	2018-10-04	2018-10-04	Blitz	Ethekwini (KED)	9	8	6	Yes	Analysis
3	2018 John Blackburn Memorial	2018-08-02	2018-09-27	Standard	Ethekwini (KED)	7	7	4.5	Yes	Analysis
4	2018 Durban Chess Club Rapid	2018-06-14	2018-07-26	Rapid	Ethekwini (KED)	8	8	5	Yes	Analysis
5	2018 Durban Chess Club (B)	2018-03-15	2018-05-24	Standard	Ethekwini (KED)	9	1	0	Yes	Analysis
6	2018 KZN Open (A)	2018-04-27	2018-04-30	Standard	Ethekwini (KED)	7	5	2	Yes	Analysis
7	2018 Moss Kolnik Memorial	2018-01-11	2018-03-01	Standard	Ethekwini (KED)	8	6	4	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2018 John Blackburn Memorial				Tournament 2018 Mhlongo Memorial Blitz
		date 2018-09-20	rnd 6	type Standard	result 1	date 2018-10-04	rnd 5	type Blitz	result 1
		Opponent Millard, C (Charlotte)				Opponent Duma, S (Sibonelo)
2	6	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 John Blackburn Memorial
		date 2018-07-26	rnd 7	type Rapid	result 1	date 2018-09-06	rnd 4	type Standard	result 0.5
		Opponent Khan, J (John)				Opponent Rooplal, D (Desmond)
3	4	Tournament 2018 Mhlongo Memorial Blitz				Tournament 2018 Durban CC Third Swiss
		date 2018-10-04	rnd 8	type Blitz	result 1	date 2018-10-18	rnd 2	type Standard	result 1
		Opponent Naidoo, Y (Yeshe)				Opponent Govender, K (Keniesha)

#	Games	Start				End
1	5	Tournament 2018 KZN Open				Tournament 2018 John Blackburn Memorial
		date 2018-04-29	rnd 6	type Standard	result 1	date 2018-09-06	rnd 4	type Standard	result 0.5
		Opponent Ngcongo, M (Minenhle)				Opponent Rooplal, D (Desmond)
2	4	Tournament 2018 John Blackburn Memorial				Tournament 2018 Durban CC Third Swiss
		date 2018-09-20	rnd 6	type Standard	result 1	date 2018-10-18	rnd 2	type Standard	result 1
		Opponent Millard, C (Charlotte)				Opponent Govender, K (Keniesha)
3	2	Tournament 2018 Moss Kolnik Memorial				Tournament 2018 Moss Kolnik Memorial
		date 2018-02-15	rnd 6	type Standard	result 1	date 2018-02-22	rnd 7	type Standard	result 1
		Opponent Yusuf, Z (Zain)				Opponent Kippen, R (Robben)

#	Games	Start				End
1	2	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 Durban Chess Club Rapid
		date 2018-07-26	rnd 7	type Rapid	result 1	date 2018-07-26	rnd 8	type Rapid	result 1
		Opponent Khan, J (John)				Opponent Khan, J (John)
2	2	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 Durban Chess Club Rapid
		date 2018-07-26	rnd 1	type Rapid	result 1	date 2018-07-26	rnd 2	type Rapid	result 1
		Opponent Narainsamy, T (Taygen)				Opponent Narainsamy, T (Taygen)
3	1	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 Durban Chess Club Rapid
		date 2018-07-26	rnd 4	type Rapid	result 1	date 2018-07-26	rnd 4	type Rapid	result 1
		Opponent Nowbath, HR (Hemant)				Opponent Nowbath, HR (Hemant)

#	Games	Start				End
1	4	Tournament 2018 Mhlongo Memorial Blitz				Tournament 2018 Mhlongo Memorial Blitz
		date 2018-10-04	rnd 2	type Blitz	result 1	date 2018-10-04	rnd 5	type Blitz	result 1
		Opponent Thebe, A (Andile)				Opponent Duma, S (Sibonelo)
2	2	Tournament 2018 Mhlongo Memorial Blitz				Tournament 2018 Mhlongo Memorial Blitz
		date 2018-10-04	rnd 8	type Blitz	result 1	date 2018-10-04	rnd 9	type Blitz	result 1
		Opponent Naidoo, Y (Yeshe)				Opponent Mkhaliphi, B (Bandile)

#	Games	Start				End
1	4	Tournament 2018 Mhlongo Memorial Blitz				Tournament 2018 Durban CC Third Swiss
		date 2018-10-04	rnd 8	type Blitz	result 1	date 2018-10-18	rnd 2	type Standard	result 1
		Opponent Naidoo, Y (Yeshe)				Opponent Govender, K (Keniesha)
2	4	Tournament 2018 Mhlongo Memorial Blitz				Tournament 2018 Mhlongo Memorial Blitz
		date 2018-10-04	rnd 2	type Blitz	result 1	date 2018-10-04	rnd 5	type Blitz	result 1
		Opponent Thebe, A (Andile)				Opponent Duma, S (Sibonelo)
3	4	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 John Blackburn Memorial
		date 2018-07-26	rnd 7	type Rapid	result 1	date 2018-08-23	rnd 2	type Standard	result 1
		Opponent Khan, J (John)				Opponent Sikhosana, L (Lacey)

#	Games	Start				End
1	3	Tournament 2018 KZN Open				Tournament 2018 John Blackburn Memorial
		date 2018-04-29	rnd 6	type Standard	result 1	date 2018-08-23	rnd 2	type Standard	result 1
		Opponent Ngcongo, M (Minenhle)				Opponent Sikhosana, L (Lacey)
2	2	Tournament 2018 Durban CC Third Swiss				Tournament 2018 Durban CC Third Swiss
		date 2018-10-11	rnd 1	type Standard	result 1	date 2018-10-18	rnd 2	type Standard	result 1
		Opponent Seebran, N (Nitesh)				Opponent Govender, K (Keniesha)
3	2	Tournament 2018 Moss Kolnik Memorial				Tournament 2018 Moss Kolnik Memorial
		date 2018-02-15	rnd 6	type Standard	result 1	date 2018-02-22	rnd 7	type Standard	result 1
		Opponent Yusuf, Z (Zain)				Opponent Kippen, R (Robben)

#	Games	Start				End
1	2	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 Durban Chess Club Rapid
		date 2018-07-26	rnd 7	type Rapid	result 1	date 2018-07-26	rnd 8	type Rapid	result 1
		Opponent Khan, J (John)				Opponent Khan, J (John)
2	2	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 Durban Chess Club Rapid
		date 2018-07-26	rnd 1	type Rapid	result 1	date 2018-07-26	rnd 2	type Rapid	result 1
		Opponent Narainsamy, T (Taygen)				Opponent Narainsamy, T (Taygen)
3	1	Tournament 2018 Durban Chess Club Rapid				Tournament 2018 Durban Chess Club Rapid
		date 2018-07-26	rnd 4	type Rapid	result 1	date 2018-07-26	rnd 4	type Rapid	result 1
		Opponent Nowbath, HR (Hemant)				Opponent Nowbath, HR (Hemant)

#	Games	Start				End
1	4	Tournament 2018 Mhlongo Memorial Blitz				Tournament 2018 Mhlongo Memorial Blitz
		date 2018-10-04	rnd 2	type Blitz	result 1	date 2018-10-04	rnd 5	type Blitz	result 1
		Opponent Thebe, A (Andile)				Opponent Duma, S (Sibonelo)
2	2	Tournament 2018 Mhlongo Memorial Blitz				Tournament 2018 Mhlongo Memorial Blitz
		date 2018-10-04	rnd 8	type Blitz	result 1	date 2018-10-04	rnd 9	type Blitz	result 1
		Opponent Naidoo, Y (Yeshe)				Opponent Mkhaliphi, B (Bandile)

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	Oliver ,HN (Henry Noel)	3	0.5	-283.3	2	0.5	-212.5	0	0	0	1	0	-425
1	Oliver ,HN (Henry Noel)	3	1709.7	1426.4	2	1766.6	1497.2	0	0	0	1	1779.2	1284.7
2	Rooplal ,D (Desmond)	3	0.5	-283.3	1	0.5	0	2	0	-425	0	0	0
2	Rooplal ,D (Desmond)	3	1662.5	1379.2	1	1675.9	1662.5	2	1751.5	1237.5	0	0	0
3	Duma ,S (Sibonelo)	2	1	0	1	0	-425	0	0	0	1	1	425
3	Duma ,S (Sibonelo)	2	1426.4	1426.4	1	1365.8	1001.4	0	0	0	1	1200	1851.4
4	Narainsamy ,T (Taygen)	2	2	425	0	0	0	2	2	425	0	0	0
4	Narainsamy ,T (Taygen)	2	1057.5	1482.5	0	0	0	2	1163.2	1482.5	0	0	0
5	Nowbath ,HR (Hemant Ranji)	2	1	0	0	0	0	2	1	0	0	0	0
5	Nowbath ,HR (Hemant Ranji)	2	1314.1	1314.1	0	0	0	2	1255.4	1314.1	0	0	0
6	Khan ,J (John)	2	2	425	0	0	0	2	2	425	0	0	0
6	Khan ,J (John)	2	1308.6	1733.6	0	0	0	2	1208.9	1733.6	0	0	0
7	Sikhosana ,LN (Lacey Nomsombuluko)	1	1	425	1	1	425	0	0	0	0	0	0
7	Sikhosana ,LN (Lacey Nomsombuluko)	1	1110.5	1535.5	1	1104.4	1535.5	0	0	0	0	0	0
8	Mbanjwa ,N (Nhlakanipho)	1	1	425	1	1	425	0	0	0	0	0	0
8	Mbanjwa ,N (Nhlakanipho)	1	1604.2	2029.2	1	1614	2029.2	0	0	0	0	0	0
9	Ngcongo ,M (Minenhle)	1	1	425	1	1	425	0	0	0	0	0	0
9	Ngcongo ,M (Minenhle)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Millard ,C (Chad)	1	1	425	1	1	425	0	0	0	0	0	0
10	Millard ,C (Chad)	1	1571.7	1996.7	1	1566.9	1996.7	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

Du Preez, JL (Johannes Lourens)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms