Chess South Africa Ratings Database

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Personal

Lourens, J (Jacobus)

Chess SA id

1160317435

FIDE id

Date of birth

2016-12-19 (U10)

Gender

Male

Region

West Rand (GWR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1166.3

Item	Main	Standard	Rapid	Blitz
Rating	1205.7	1206.7	1200	1200
Raw rating	1192.7	1189.3	1200	1200
Weighted rating	1205.7	1206.7	1200	1200
Weighted performance	1141.6	1142	0	0
Floor	734.5	742.7	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	167.6	168.4	165.8	165.8
Highest rating	1234.5 2025-07-01	1242.7 2025-07-01	1200 2025-04-01	1200 2025-04-01
Highest raw rating	1234.5 2025-07-01	1242.7 2025-07-01	1200 2025-04-01	1200 2025-04-01
Highest weighted rating	1206.5 2025-09-30	1208 2025-09-01	1200 2025-04-01	1200 2025-04-01
Highest weighted performance	1144.6 2025-09-30	1145.3 2025-09-30	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.9	-1.2	0	0
New rating	1204.8	1205.5	1200	1200
Analysis
Rating	1205.7	1206.7	1200	1200
Raw rating	1192.7	1189.3	1200	1200
Weighted rating	1205.7	1206.7	1200
Weighted performance	1141.6	1142	0
K-factor	36	36	36	36
Floor	734.5	742.7	700	700
Max/Min rating change allowed	167.6	168.4	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	1192.7	1189.3	1200	1200
New weighted rating	1204.8	1205.5	1200	1200
New weighted performance	1134.8	1135.2	0	0
Temp new rating	1204.8	1205.5	1200	1200
Temp new rating +/-	-0.9	-1.2	0	0
Final new rating +/-	-0.9	-1.2	0	0
New rating	1204.8	1205.5	1200	1200
New K-factor	36	36	36	36
New floor	734.5	742.7	700	700

Item	Main	Standard
	0	0
	28	28
	0	0
	0	0
	0	0
	0	0
History	28	28

Games since
	Main 28	Standard 28		Rapid 0		Blitz 0
Gender	Male
Age group	U10
Region	West Rand (GWR)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	28	10.5	37.5	-106.2	1268.8	1162.6
Standard	28	10.5	37.5	-106.2	1268.8	1162.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	28	10.5	37.5	-106.2	1268.8	1162.6
Standard	28	10.5	37.5	-106.2	1268.8	1162.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1192.7	1189.3	1200	1200
2025-09-30	1204.3	1203.7	1200	1200
2025-09-01	1219.9	1223.5	1200	1200
2025-08-01	1234.5	1242.7	1200	1200
2025-07-01	1234.5	1242.7	1200	1200
2025-06-01	1199.7	1199.6	1200	1200
2025-05-01	1199.5	1199.4	1200	1200
2025-04-01	1196.6	1195.9	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	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	West Rand Closed 2025 (U10)	2025-10-18	2025-10-18	Standard	West Rand (GWR)	5	5	1.5	Yes	Analysis
2	West Rand Trials 2025 (U10)	2025-09-06	2025-09-06	Standard	West Rand (GWR)	5	4	1	Yes	Analysis
3	West Rand Women's Day Open 2025 (U10)	2025-08-09	2025-08-09	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
4	West Rand Open 2.0 2025 (U10)	2025-06-07	2025-06-07	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
5	FIDE in The West 2025 (U10)	2025-04-12	2025-04-12	Standard	West Rand (GWR)	5	5	2.5	Yes	Analysis
6	West Rand Juniors 2025 (U10)	2025-03-08	2025-03-08	Standard	West Rand (GWR)	5	4	0.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	West Rand Closed 2025 (U10)	2025-10-18	2025-10-18	Standard	West Rand (GWR)	5	5	1.5	Yes	Analysis
2	West Rand Trials 2025 (U10)	2025-09-06	2025-09-06	Standard	West Rand (GWR)	5	4	1	Yes	Analysis
3	West Rand Women's Day Open 2025 (U10)	2025-08-09	2025-08-09	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
4	West Rand Open 2.0 2025 (U10)	2025-06-07	2025-06-07	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
5	FIDE in The West 2025 (U10)	2025-04-12	2025-04-12	Standard	West Rand (GWR)	5	5	2.5	Yes	Analysis
6	West Rand Juniors 2025 (U10)	2025-03-08	2025-03-08	Standard	West Rand (GWR)	5	4	0.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament West Rand Closed 2025				Tournament West Rand Closed 2025
		date 2025-10-18	rnd 3	type Standard	result 1	date 2025-10-18	rnd 4	type Standard	result 0.5
		Opponent Molefe, K (Kaago)				Opponent Lourens, H (Hendrikus)
2	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Trials 2025
		date 2025-08-09	rnd 5	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Legodi, O (Olwethu Naledi)
3	2	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 5	type Standard	result 1
		Opponent de Beer, H (Handre)				Opponent Britz, W (Wian)

#	Games	Start				End
1	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Trials 2025
		date 2025-08-09	rnd 5	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Legodi, O (Olwethu Naledi)
2	2	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 5	type Standard	result 1
		Opponent de Beer, H (Handre)				Opponent Britz, W (Wian)
3	2	Tournament FIDE in The West 2025				Tournament FIDE in The West 2025
		date 2025-04-12	rnd 4	type Standard	result 0.5	date 2025-04-12	rnd 5	type Standard	result 1
		Opponent Lourens, H (Hendrikus)				Opponent Lourens, A (Albertus)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Trials 2025
		date 2025-08-09	rnd 5	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Legodi, O (Olwethu Naledi)
2	2	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 5	type Standard	result 1
		Opponent de Beer, H (Handre)				Opponent Britz, W (Wian)
3	1	Tournament West Rand Women's Day Open 2025				Tournament West Rand Women's Day Open 2025
		date 2025-08-09	rnd 2	type Standard	result 1	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Lourens, H (Hendrikus)				Opponent Lourens, H (Hendrikus)

#	Games	Start				End
1	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Trials 2025
		date 2025-08-09	rnd 5	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Legodi, O (Olwethu Naledi)
2	2	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 5	type Standard	result 1
		Opponent de Beer, H (Handre)				Opponent Britz, W (Wian)
3	1	Tournament West Rand Women's Day Open 2025				Tournament West Rand Women's Day Open 2025
		date 2025-08-09	rnd 2	type Standard	result 1	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Lourens, H (Hendrikus)				Opponent Lourens, H (Hendrikus)

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	Van Der Merwe ,J (Jayden)	4	0	-425	4	0	-425	0	0	0	0	0	0
1	Van Der Merwe ,J (Jayden)	4	1405.6	980.6	4	1408.1	980.6	0	0	0	0	0	0
2	Lourens ,H (Hendrikus)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Lourens ,H (Hendrikus)	3	1196.8	1338.4	3	1196.2	1338.4	0	0	0	0	0	0
3	Human ,L (Lian)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Human ,L (Lian)	3	1283.6	858.6	3	1284.9	858.6	0	0	0	0	0	0
4	Raofa ,N (Njabulo Nkosana)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Raofa ,N (Njabulo Nkosana)	2	1448.3	1023.3	2	1438.2	1023.3	0	0	0	0	0	0
5	Molebatsi ,R (Reletlhogonolo)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Molebatsi ,R (Reletlhogonolo)	1	1223.5	798.5	1	1225.8	798.5	0	0	0	0	0	0
6	Lourens ,A (Albertus)	1	1	425	1	1	425	0	0	0	0	0	0
6	Lourens ,A (Albertus)	1	1196.1	1621.1	1	1195.3	1621.1	0	0	0	0	0	0
7	Lebepe ,M (Mudjadji Kamano)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Lebepe ,M (Mudjadji Kamano)	1	1284.4	859.4	1	1301.7	859.4	0	0	0	0	0	0
8	Britz ,W (Wian)	1	1	425	1	1	425	0	0	0	0	0	0
8	Britz ,W (Wian)	1	1357.6	1782.6	1	1368.8	1782.6	0	0	0	0	0	0
9	Molefe ,K (Kaago)	1	1	425	1	1	425	0	0	0	0	0	0
9	Molefe ,K (Kaago)	1	1237.7	1662.7	1	1245.8	1662.7	0	0	0	0	0	0
10	Pretorius ,K (Keandre)	1	1	425	1	1	425	0	0	0	0	0	0
10	Pretorius ,K (Keandre)	1	1199.4	1624.4	1	1199.2	1624.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Lourens, J (Jacobus)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms