Chess South Africa Ratings Database

PLAYER PAGE

Personal

Lourens, J (Jon-Adriaan)

Chess SA id

103018488

FIDE id

Date of birth

2003-12-10 (Adult)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1194.3	1186.8	909	909
Raw rating	1194.3	1186.8	909	909
Weighted rating	1193.7	1186.6	909	909
Weighted performance	0	0	0	0
Floor	694.3	686.8	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	167.2	169	251	251
Highest rating	1329.9 2019-07-01	1328.1 2019-07-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1194.3 2024-02-01	1186.8 2024-02-01	909 2024-02-01	909 2024-02-01
Highest weighted rating	1194.3 2024-11-01	1186.8 2024-11-01	909 2024-11-01	909 2024-11-01
Highest weighted performance	1329.9 2019-07-01	1328.1 2019-07-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1194.3	1186.8	909	909
Analysis
Rating	1194.3	1186.8	909	909
Raw rating	1194.3	1186.8	909	909
Weighted rating	1193.7	1186.6	909
Weighted performance	0	0	0
K-factor	40	40	40	40
Floor	694.3	686.8	500	500
Max/Min rating change allowed	167.2	169	251	251
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	1194.3	1186.8	909	909
New weighted rating	1194.1	1186.7	909	909
New weighted performance	0	0	0	0
Temp new rating	1194.3	1186.8	909	909
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1194.3	1186.8	909	909
New K-factor	40	40	40	40
New floor	694.3	686.8	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	122	122

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
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	19	12	63.16	111.8	1215.4	1327.2
Standard	19	12	63.16	111.8	1215.4	1327.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1194.3	1186.8	909	909
2025-09-01	1194.3	1186.8	909	909
2025-08-01	1194.3	1186.8	909	909
2025-07-01	1194.3	1186.8	909	909
2025-06-01	1194.3	1186.8	909	909
2025-05-01	1194.3	1186.8	909	909
2025-04-01	1194.3	1186.8	909	909
2025-03-01	1194.3	1186.8	909	909
2025-02-01	1194.3	1186.8	909	909
2025-01-01	1194.3	1186.8	909	909
2024-12-01	1194.3	1186.8	909	909
2024-11-01	1194.3	1186.8	909	909
2024-10-01	1194.3	1186.8	909	909
2024-09-01	1194.3	1186.8	909	909
2024-08-01	1194.3	1186.8	909	909
2024-07-01	1194.3	1186.8	909	909
2024-06-01	1194.3	1186.8	909	909
2024-08-01	1194.3	1186.8	909	909
2024-04-01	1194.3	1186.8	909	909
2024-03-01	1194.3	1186.8	909	909
2024-02-01	1194.3	1186.8	909	909
2024-01-01	1194.3	1186.8	909	909
2023-12-01	1133.4	1163.8	909	909
2023-11-01	1133.4	1163.8	909	909

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	Grey College Team Championship 2020 (B)	2020-01-31	2020-02-01	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
2	2019 D4 Tshwane South Schools League Team Finals (U17)	2019-07-27	2019-07-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	Grey College Team Championship 2019 (A)	2019-02-22	2019-02-23	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
4	2018 D4 Tshwane South Schools League Finals (U15)	2018-08-04	2018-08-04	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament 2019 D4 Tshwane South Schools League Team Finals				Tournament Grey College Team Championship 2020
		date 2019-07-27	rnd 3	type Standard	result 1	date 2020-01-31	rnd 2	type Standard	result 1
		Opponent Van Aardt, D (Durand)				Opponent Slabber, P (Pieter)
2	4	Tournament Grey College Team Championship 2019				Tournament Grey College Team Championship 2019
		date 2019-02-22	rnd 2	type Standard	result 1	date 2019-02-23	rnd 5	type Standard	result 1
		Opponent Mxaxa, U (Unam)				Opponent Diedericks, M (Mathiam)
3	1	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 5	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Namane, O (Orapeleng)				Opponent Namane, O (Orapeleng)

#	Games	Start				End
1	5	Tournament 2019 D4 Tshwane South Schools League Team Finals				Tournament Grey College Team Championship 2020
		date 2019-07-27	rnd 3	type Standard	result 1	date 2020-01-31	rnd 2	type Standard	result 1
		Opponent Van Aardt, D (Durand)				Opponent Slabber, P (Pieter)
2	4	Tournament Grey College Team Championship 2019				Tournament Grey College Team Championship 2019
		date 2019-02-22	rnd 2	type Standard	result 1	date 2019-02-23	rnd 5	type Standard	result 1
		Opponent Mxaxa, U (Unam)				Opponent Diedericks, M (Mathiam)
3	1	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 5	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Namane, O (Orapeleng)				Opponent Namane, O (Orapeleng)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament 2019 D4 Tshwane South Schools League Team Finals				Tournament Grey College Team Championship 2020
		date 2019-07-27	rnd 3	type Standard	result 1	date 2020-01-31	rnd 2	type Standard	result 1
		Opponent Van Aardt, D (Durand)				Opponent Slabber, P (Pieter)
2	4	Tournament Grey College Team Championship 2019				Tournament Grey College Team Championship 2019
		date 2019-02-22	rnd 2	type Standard	result 1	date 2019-02-23	rnd 5	type Standard	result 1
		Opponent Mxaxa, U (Unam)				Opponent Diedericks, M (Mathiam)
3	1	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 5	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Namane, O (Orapeleng)				Opponent Namane, O (Orapeleng)

#	Games	Start				End
1	5	Tournament 2019 D4 Tshwane South Schools League Team Finals				Tournament Grey College Team Championship 2020
		date 2019-07-27	rnd 3	type Standard	result 1	date 2020-01-31	rnd 2	type Standard	result 1
		Opponent Van Aardt, D (Durand)				Opponent Slabber, P (Pieter)
2	4	Tournament Grey College Team Championship 2019				Tournament Grey College Team Championship 2019
		date 2019-02-22	rnd 2	type Standard	result 1	date 2019-02-23	rnd 5	type Standard	result 1
		Opponent Mxaxa, U (Unam)				Opponent Diedericks, M (Mathiam)
3	1	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 5	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Namane, O (Orapeleng)				Opponent Namane, O (Orapeleng)

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 Aardt ,D (Durand)	2	2	425	2	2	425	0	0	0	0	0	0
1	Van Aardt ,D (Durand)	2	1085.7	1510.7	2	1067.3	1510.7	0	0	0	0	0	0
2	Sukhoo ,A (Aayush)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Sukhoo ,A (Aayush)	1	1042.4	617.4	1	1045.5	617.4	0	0	0	0	0	0
3	Smal ,D (Dewald)	1	1	425	1	1	425	0	0	0	0	0	0
3	Smal ,D (Dewald)	1	981	1406	1	1004.4	1406	0	0	0	0	0	0
4	Mavuso ,T (Thamsanqa)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Mavuso ,T (Thamsanqa)	1	1402.1	977.1	1	1402.2	977.1	0	0	0	0	0	0
5	Dykema ,JD (Joshua Damian)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Dykema ,JD (Joshua Damian)	1	1456.6	1031.6	1	1460.4	1031.6	0	0	0	0	0	0
6	Diedericks ,M (Mathiam)	1	1	425	1	1	425	0	0	0	0	0	0
6	Diedericks ,M (Mathiam)	1	1204	1629	1	1204.4	1629	0	0	0	0	0	0
7	Dykema ,DR (Dirkho Reint)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Dykema ,DR (Dirkho Reint)	1	1567.7	1142.7	1	1574.5	1142.7	0	0	0	0	0	0
8	Wang ,I (Ikai)	1	1	425	1	1	425	0	0	0	0	0	0
8	Wang ,I (Ikai)	1	1132.5	1557.5	1	1113.9	1557.5	0	0	0	0	0	0
9	Nzimande ,O (Oratile)	1	1	425	1	1	425	0	0	0	0	0	0
9	Nzimande ,O (Oratile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Makhura ,T (Thabang)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Makhura ,T (Thabang)	1	1360.4	935.4	1	1359	935.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Lourens, J (Jon-Adriaan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms