Chess South Africa Ratings Database

PLAYER PAGE

Personal

Du Preez, L (Lourens)

Chess SA id

1130139956

FIDE id

Date of birth

2013-07-19 (U14)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1327.7

Item	Main	Standard	Rapid	Blitz
Rating	1279.4	1284.7	1200	1200
Raw rating	1279.4	1284.7	1200	1200
Weighted rating	1262.5	1265.8	1200	1200
Weighted performance	1181.1	1180.7	0	0
Floor	796.4	810.6	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	148.1	147	165.8	165.8
Highest rating	1626.3 2022-04-01	1623.8 2022-04-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1296.4 2024-08-01	1310.6 2024-08-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1296.4 2023-03-01	1310.6 2023-03-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1626.3 2022-04-01	1623.8 2022-04-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1279.4	1284.7	1200	1200
Analysis
Rating	1279.4	1284.7	1200	1200
Raw rating	1279.4	1284.7	1200	1200
Weighted rating	1262.5	1265.8	1200
Weighted performance	1181.1	1180.7	0
K-factor	36	36	36	36
Floor	796.4	810.6	700	700
Max/Min rating change allowed	148.1	147	165.8	165.8
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	1279.4	1284.7	1200	1200
New weighted rating	1264.8	1268.3	1200	1200
New weighted performance	1173.6	1173.3	0	0
Temp new rating	1279.4	1284.7	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1279.4	1284.7	1200	1200
New K-factor	36	36	36	36
New floor	796.4	810.6	700	700

Item	Main	Standard
	0	0
	10	10
	28	28
	5	5
	15	15
	0	0
History	58	58

Games since
	Main 38	Standard 38		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	3329		1198		452
Male	2594		938		348
U14	631		220		80
U14 Male	447		155		54
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	10	5	50	0	1341.4	1341.4
Standard	10	5	50	0	1341.4	1341.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	58	32	55.17	44	1241.6	1285.6
Standard	58	32	55.17	44	1241.6	1285.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1279.4	1284.7	1200	1200
2025-09-30	1279.4	1284.7	1200	1200
2025-09-01	1279.4	1284.7	1200	1200
2025-08-01	1279.4	1284.7	1200	1200
2025-07-01	1270	1274.7	1200	1200
2025-06-01	1270	1274.7	1200	1200
2025-05-01	1251.3	1251.6	1200	1200
2025-04-01	1251.3	1251.6	1200	1200
2025-03-01	1251.3	1251.6	1200	1200
2025-02-01	1251.3	1251.6	1200	1200
2025-01-01	1251.3	1251.6	1200	1200
2024-12-01	1251.3	1251.6	1200	1200
2024-11-01	1251.3	1251.6	1200	1200
2024-10-01	1242.9	1243.3	1200	1200
2024-09-01	1274	1282.5	1200	1200
2024-08-01	1296.4	1310.6	1200	1200
2024-07-01	1289.2	1303.4	1200	1200
2024-09-01	1289.2	1303.4	1200	1200
2024-05-01	1203.7	1196.8	1200	1200
2024-04-01	1203.7	1196.8	1200	1200
2024-03-01	1203.7	1196.8	1200	1200
2024-02-01	1203.7	1196.8	1200	1200
2024-01-01	1203.7	1196.8	1200	1200
2023-12-01	1203.7	1196.8	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng Top Schools Teams (U13)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	0	0	No	Analysis
2	2025 Tshwane North District CLOSED Team Championships (D3) (U13 Open)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	0	0	No	Analysis
3	2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U13 Open)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
4	2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U13 Open)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng Top Schools Teams (U13)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	0	0	No	Analysis
2	2025 Tshwane North District CLOSED Team Championships (D3) (U13 Open)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	0	0	No	Analysis
3	2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U13 Open)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
4	2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U13 Open)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	Gauteng Top Schools 2024 (U11 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
6	Gauteng Schools Individuals Finals 2024 (U11 Boys)	2024-08-16	2024-08-16	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
7	2024 Tshwane North School District Team League Finals (U11)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
8	2024 Tshwane North School District Cluster 4 & 5 Team League (U11)	2024-07-20	2024-07-20	Standard	Tshwane (GTP)	3	3	2	Yes	Analysis
9	2024 Tshwane North School District CLOSED Individual Champioships (U11 Boys)	2024-05-11	2024-05-11	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
10	District 3 Cluster 4 and 5 Individuals 2024 (U11 Boys)	2024-05-04	2024-05-04	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
11	Tuks Junior Developmental Chess Tournament 2023 (Red)	2023-03-18	2023-03-18	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
12	2022 Gauteng Schools Team Championships (U9 Open)	2022-08-27	2022-08-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	Tuks Junior Chess Club Developmental Tournament 2022 (Red)	2022-06-17	2022-06-17	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
14	2022 D3 Cluster City Schools (U9)	2022-04-23	2022-04-23	Standard	Tshwane (GTP)	5	5	5	Yes	Analysis

#	Games	Start				End
1	5	Tournament District 3 Cluster 4 and 5 Individuals 2024				Tournament 2024 Tshwane North School District CLOSED Individual Champioships
		date 2024-05-04	rnd 5	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Potgieter, R (Riku Roelof)				Opponent Rappard, H (Heino)
2	5	Tournament 2022 D3 Cluster City Schools				Tournament 2022 D3 Cluster City Schools
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Swart, L (Leia)				Opponent Murphy, L (Lian)
3	4	Tournament 2024 Tshwane North School District Cluster 4 & 5 Team League				Tournament 2024 Tshwane North School District Team League Finals
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Prinsloo, R (Ruvan)				Opponent Venter, A (Amelie)

#	Games	Start				End
1	5	Tournament District 3 Cluster 4 and 5 Individuals 2024				Tournament 2024 Tshwane North School District CLOSED Individual Champioships
		date 2024-05-04	rnd 5	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Potgieter, R (Riku Roelof)				Opponent Rappard, H (Heino)
2	5	Tournament 2022 D3 Cluster City Schools				Tournament 2022 D3 Cluster City Schools
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Swart, L (Leia)				Opponent Murphy, L (Lian)
3	4	Tournament 2024 Tshwane North School District Cluster 4 & 5 Team League				Tournament 2024 Tshwane North School District Team League Finals
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Prinsloo, R (Ruvan)				Opponent Venter, A (Amelie)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament District 3 Cluster 4 and 5 Individuals 2024				Tournament 2024 Tshwane North School District CLOSED Individual Champioships
		date 2024-05-04	rnd 5	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Potgieter, R (Riku Roelof)				Opponent Rappard, H (Heino)
2	5	Tournament 2022 D3 Cluster City Schools				Tournament 2022 D3 Cluster City Schools
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Swart, L (Leia)				Opponent Murphy, L (Lian)
3	4	Tournament 2024 Tshwane North School District Cluster 4 & 5 Team League				Tournament 2024 Tshwane North School District Team League Finals
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Prinsloo, R (Ruvan)				Opponent Venter, A (Amelie)

#	Games	Start				End
1	5	Tournament District 3 Cluster 4 and 5 Individuals 2024				Tournament 2024 Tshwane North School District CLOSED Individual Champioships
		date 2024-05-04	rnd 5	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Potgieter, R (Riku Roelof)				Opponent Rappard, H (Heino)
2	5	Tournament 2022 D3 Cluster City Schools				Tournament 2022 D3 Cluster City Schools
		date 2022-04-23	rnd 1	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Swart, L (Leia)				Opponent Murphy, L (Lian)
3	4	Tournament 2024 Tshwane North School District Cluster 4 & 5 Team League				Tournament 2024 Tshwane North School District Team League Finals
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Prinsloo, R (Ruvan)				Opponent Venter, A (Amelie)

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	Mamphweli ,T (Tshedza)	3	3	425	3	3	425	0	0	0	0	0	0
1	Mamphweli ,T (Tshedza)	3	1228.1	1653.1	3	1224.5	1653.1	0	0	0	0	0	0
2	Kotze ,M (Micah Navaeh)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	Kotze ,M (Micah Navaeh)	3	1266.4	841.4	3	1277.1	841.4	0	0	0	0	0	0
3	Pretorius ,M (Marno)	2	1	0	2	1	0	0	0	0	0	0	0
3	Pretorius ,M (Marno)	2	1221.1	1221.1	2	1224.4	1221.1	0	0	0	0	0	0
4	Potgieter ,R (Riku Roelof)	1	1	425	1	1	425	0	0	0	0	0	0
4	Potgieter ,R (Riku Roelof)	1	1188.6	1613.6	1	1185.6	1613.6	0	0	0	0	0	0
5	Canham ,T (Te-Andre)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Canham ,T (Te-Andre)	1	1524.6	1099.6	1	1504.6	1099.6	0	0	0	0	0	0
6	Boshoff ,R (Reinhardt)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Boshoff ,R (Reinhardt)	1	1563	1138	1	1565.9	1138	0	0	0	0	0	0
7	Bienedell ,R (Robin)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Bienedell ,R (Robin)	1	1431.2	1006.2	1	1418.1	1006.2	0	0	0	0	0	0
8	Fischer ,J (Jandre)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Fischer ,J (Jandre)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Van Der Merwe ,H (Hendrik)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Van Der Merwe ,H (Hendrik)	1	1143.9	718.9	1	1130.4	718.9	0	0	0	0	0	0
10	Joubert ,A (Adrian)	1	1	425	1	1	425	0	0	0	0	0	0
10	Joubert ,A (Adrian)	1	1200	1625	1	1200	1625	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, L (Lourens)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms