Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, L (Luan Rudolf Johanne)

Chess SA id

1110147448

FIDE id

Date of birth

2011-12-21 (U16)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-04-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1066.7

Item	Main	Standard	Rapid	Blitz
Rating	1113.8	1120.9	1151.2	1200
Raw rating	1113.8	1120.9	1151.2	1200
Weighted rating	1103.9	1119.4	1128.6	1200
Weighted performance	1027.6	937.1	978.3	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	187.5	185.6	177.7	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2020-01-01	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2020-01-01	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1113.8	1120.9	1151.2	1200
Analysis
Rating	1113.8	1120.9	1151.2	1200
Raw rating	1113.8	1120.9	1151.2	1200
Weighted rating	1103.9	1119.4	1128.6
Weighted performance	1027.6	937.1	978.3
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	187.5	185.6	177.7	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	1113.8	1120.9	1151.2	1200
New weighted rating	1105	1119.2	1131.3	1200
New weighted performance	1027.2	936.7	977.9	0
Temp new rating	1113.8	1120.9	1151.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1113.8	1120.9	1151.2	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	22	10	12
	16	10	6
	11	5	6
	4	0	4
	0	0	0
History	53	25	28

Games since
	Main 38	Standard 20		Rapid 18		Blitz 0
Gender	Male
Age group	U16
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	22	9	40.91	-77.3	1241.4	1164.1
Standard	10	3	30	-170	1292.4	1122.4
Rapid	12	6	50	0	1198.8	1198.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	53	17.5	33.02	-144.3	1214.9	1070.5
Standard	25	7.5	30	-170	1234.5	1064.5
Rapid	28	10	35.71	-121.4	1197.4	1076
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1113.8	1120.9	1151.2	1200
2025-09-01	1113.8	1120.9	1151.2	1200
2025-08-01	1113.8	1120.9	1151.2	1200
2025-07-01	1113.8	1120.9	1151.2	1200
2025-06-01	1113.8	1120.9	1151.2	1200
2025-05-01	1113.8	1120.1	1151.2	1200
2025-04-01	1150	1150.9	1151.2	1200
2025-03-01	1121.6	1122	1151.2	1200
2025-02-01	1090.5	1121.5	1101.6	1200
2025-01-01	1074.9	1096.4	1101.6	1200
2024-12-01	1074.9	1096.4	1101.6	1200
2024-11-01	1074.9	1096.4	1101.6	1200
2024-10-01	1074.9	1096.4	1101.6	1200
2024-09-01	1074.9	1096.4	1101.6	1200
2024-08-01	1074.9	1096.4	1101.6	1200
2024-07-01	1102.8	1138.8	1101.6	1200
2024-06-01	1106.8	1138.8	1100.8	1200
2024-08-01	1106.8	1138.8	1100.8	1200
2024-04-01	1106.8	1138.8	1100.8	1200
2024-03-01	1099.5	1140.4	1100.8	1200
2024-02-01	1099.5	1140.4	1100.8	1200
2024-01-01	1099.5	1140.4	1100.8	1200
2023-12-01	1099.5	1140.4	1100.8	1200
2023-11-01	1099.5	1140.4	1100.8	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	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	5	0	Yes	Analysis
2	Overberg Schools - HS Closed 2025 (U15 Boys)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
3	Curro Hermanus Summer Open 2025 (U15)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
4	Overberg Schools & Federation Open 2025 (U15)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	5	0	Yes	Analysis
2	Overberg Schools - HS Closed 2025 (U15 Boys)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
3	Curro Hermanus Summer Open 2025 (U15)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
4	Overberg Schools & Federation Open 2025 (U15)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
5	Overberg Schools - Top Schools 2024 (U13 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	1	Yes	Analysis
6	Western Cape - Brian Raubenheimer Development Tournament 2024 (U13 Boys)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
7	Overberg Schools - PS Closed 2024 (U13 Boys)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	2	Yes	Analysis
8	Overberg Top Schools 2023 (U13)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	1.5	Yes	Analysis
9	Overberg Schools Bredasdorp Zone Trails 2023 (U13)	2023-02-16	2023-03-02	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
10	Metro Rapid 2022 (U11 Boys)	2022-10-22	2022-10-22	Rapid	Cape Town (WCT)	5	4	0	Yes	Analysis

#	Games	Start				End
1	2	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Nel, Z (Zybrand)				Opponent Zeederberg, C (Cailen)
2	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 4	type Rapid	result 1	date 2025-02-08	rnd 5	type Rapid	result 1
		Opponent Scholtz, F (Francois)				Opponent Jiri, H (Howard)
3	2	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-01	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, R (Reynhardt)				Opponent Joseph, L (Leevano)

#	Games	Start				End
1	2	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Nel, Z (Zybrand)				Opponent Zeederberg, C (Cailen)
2	2	Tournament Overberg Top Schools 2023				Tournament Overberg Top Schools 2023
		date 2023-08-05	rnd 2	type Standard	result 0.5	date 2023-08-05	rnd 3	type Standard	result 1
		Opponent Vogel, Z (Zander)				Opponent Liebenberg, J (Junior)
3	1	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 1	type Standard	result 1	date 2025-03-22	rnd 1	type Standard	result 1
		Opponent Scholtz, F (Francois)				Opponent Scholtz, F (Francois)

#	Games	Start				End
1	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 4	type Rapid	result 1	date 2025-02-08	rnd 5	type Rapid	result 1
		Opponent Scholtz, F (Francois)				Opponent Jiri, H (Howard)
2	2	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-01	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, R (Reynhardt)				Opponent Joseph, L (Leevano)
3	2	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 2	type Rapid	result 1	date 2024-06-08	rnd 3	type Rapid	result 1
		Opponent Ellman, A (Andries)				Opponent Nceka, B (Brandon)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Nel, Z (Zybrand)				Opponent Zeederberg, C (Cailen)
2	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 4	type Rapid	result 1	date 2025-02-08	rnd 5	type Rapid	result 1
		Opponent Scholtz, F (Francois)				Opponent Jiri, H (Howard)
3	2	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-01	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, R (Reynhardt)				Opponent Joseph, L (Leevano)

#	Games	Start				End
1	2	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Nel, Z (Zybrand)				Opponent Zeederberg, C (Cailen)
2	1	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 1	type Standard	result 1	date 2025-03-22	rnd 1	type Standard	result 1
		Opponent Scholtz, F (Francois)				Opponent Scholtz, F (Francois)
3	1	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - Top Schools 2024
		date 2024-07-27	rnd 2	type Standard	result 1	date 2024-07-27	rnd 2	type Standard	result 1
		Opponent Kramer, S (Samuel)				Opponent Kramer, S (Samuel)

#	Games	Start				End
1	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 4	type Rapid	result 1	date 2025-02-08	rnd 5	type Rapid	result 1
		Opponent Scholtz, F (Francois)				Opponent Jiri, H (Howard)
2	2	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-01	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, R (Reynhardt)				Opponent Joseph, L (Leevano)
3	2	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 2	type Rapid	result 1	date 2024-06-08	rnd 3	type Rapid	result 1
		Opponent Ellman, A (Andries)				Opponent Nceka, B (Brandon)

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	Scholtz ,F (Francois)	3	3	425	2	2	425	1	1	425	0	0	0
1	Scholtz ,F (Francois)	3	1218.2	1643.2	2	1220.4	1643.2	1	1222.6	1643.2	0	0	0
2	Nel ,Z (Zybrand)	2	1	0	1	1	425	1	0	-425	0	0	0
2	Nel ,Z (Zybrand)	2	1188.8	1188.8	1	1200	1613.8	1	1159.6	763.8	0	0	0
3	Nceka ,B (Brandon)	2	1	0	1	0	-425	1	1	425	0	0	0
3	Nceka ,B (Brandon)	2	1271.9	1271.9	1	1268	846.9	1	1235.6	1696.9	0	0	0
4	Hendricks ,L (Lakeisha)	2	0	-425	0	0	0	2	0	-425	0	0	0
4	Hendricks ,L (Lakeisha)	2	1197.6	772.6	0	0	0	2	1218.4	772.6	0	0	0
5	Van Der Westhuizen ,M (Mika)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Van Der Westhuizen ,M (Mika)	1	1362.9	937.9	1	1421.6	937.9	0	0	0	0	0	0
6	Vogel ,Z (Zander)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Vogel ,Z (Zander)	1	1170.4	1170.4	1	1174.8	1170.4	0	0	0	0	0	0
7	Swart ,E (Eon)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Swart ,E (Eon)	1	1159.7	734.7	1	1105.6	734.7	0	0	0	0	0	0
8	Isaacs ,T (Tyrique)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Isaacs ,T (Tyrique)	1	1420.3	995.3	1	1399	995.3	0	0	0	0	0	0
9	Drury ,R (Riko)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Drury ,R (Riko)	1	1111	686	1	1098.4	686	0	0	0	0	0	0
10	Zogo ,C (Credo)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Zogo ,C (Credo)	1	1388.3	963.3	1	1313.7	963.3	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

Van Der Merwe, L (Luan Rudolf Johanne)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms