Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Dalen, L (Lenert)

Chess SA id

1160301349

FIDE id

Date of birth

2016-08-12 (U10)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

74.4

Junior GPX Points

1477.4

Item	Main	Standard	Rapid	Blitz
Rating	1575.6	1572.7	1265.2	1199.7
Raw rating	1575.6	1572.7	1265.2	1199.7
Weighted rating	1420	1415.7	1263	1199.6
Weighted performance	1531.2	1528.1	0	0
Floor	1115.8	1123.6	765.2	700
K-factor	28	28	36	36
Min/Max rating change allowed	97.1	97.5	151.1	165.9
Highest rating	1645.4 2025-09-01	1674.5 2024-05-01	1474.3 2024-03-01	1200 2024-04-01
Highest raw rating	1615.8 2025-09-01	1623.6 2025-09-01	1265.2 2024-04-01	1200 2024-04-01
Highest weighted rating	1543.7 2024-10-01	1538.4 2024-10-01	1265.2 2024-10-01	1200 2024-04-01
Highest weighted performance	1645.4 2025-09-01	1674.5 2024-05-01	1474.3 2024-03-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1575.6	1572.7	1265.2	1199.7
Analysis
Rating	1575.6	1572.7	1265.2	1199.7
Raw rating	1575.6	1572.7	1265.2	1199.7
Weighted rating	1420	1415.7	1263
Weighted performance	1531.2	1528.1	0
K-factor	28	28	36	36
Floor	1115.8	1123.6	765.2	700
Max/Min rating change allowed	97.1	97.5	151.1	165.9
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	1575.6	1572.7	1265.2	1199.7
New weighted rating	1437.8	1433.8	1263.9	1199.6
New weighted performance	1522.1	1519.1	0	0
Temp new rating	1575.6	1572.7	1265.2	1199.7
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1575.6	1572.7	1265.2	1199.7
New K-factor	28	28	36	36
New floor	1115.8	1123.6	765.2	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	79	74	0	5
	10	5	5	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	89	79	5	5

Games since
	Main 89	Standard 79		Rapid 5		Blitz 5
Gender	Male
Age group	U10
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	781		288		37
Male	691		250		32
U10	31		17		1
U10 Male	26		14		1
Standard
	RSA		Province		Region
Overall	753		293		37
Male	663		251		31
U10	28		16		1
U10 Male	24		14		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	79	54.5	68.99	161.4	1388.3	1549.7
Standard	74	53.5	72.3	189.5	1383.2	1572.7
Rapid	0	0	0	0	0	0
Blitz	5	1	20	-255	1464.5	1209.5
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	89	63.5	71.35	181.5	1372.2	1553.7
Standard	79	58.5	74.05	204.4	1376.6	1581
Rapid	5	4	80	255	1211	1466
Blitz	5	1	20	-255	1464.5	1209.5

Date	Main	Standard	Rapid	Blitz
2025-11-01	1575.6	1572.7	1265.2	1199.7
2025-09-30	1575.6	1572.7	1265.2	1199.7
2025-09-01	1615.8	1623.6	1265.2	1199.7
2025-08-01	1576.8	1575.6	1265.2	1199.7
2025-07-01	1543.7	1538.4	1265.2	1199.5
2025-06-01	1477	1509.5	1265.2	1196.5
2025-05-01	1381.3	1384.9	1265.2	1200
2025-04-01	1321.5	1312	1265.2	1200
2025-03-01	1321.5	1312	1265.2	1200
2025-02-01	1321.5	1312	1265.2	1200
2025-01-01	1321.5	1312	1265.2	1200
2024-12-01	1321.5	1312	1265.2	1200
2024-11-01	1321.5	1312	1265.2	1200
2024-10-01	1321.5	1312	1265.2	1200
2024-09-01	1321.5	1312	1265.2	1200
2024-08-01	1321.5	1312	1265.2	1200
2024-07-01	1321.5	1312	1265.2	1200
2024-09-01	1238.4	1200	1265.2	1200
2024-05-01	1238.4	1200	1265.2	1200
2024-04-01	1238.4	1200	1265.2	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	2025 Centurion Chess Open Tournament (U10)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	GoForChess Junior Chess Championships 2025 (U10)	2025-09-14	2025-09-14	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
3	Ekurhuleni Trial 4 2025 (G)	2025-09-21	2025-09-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
4	2025 Midstream Open Chess Tournament (U10)	2025-08-25	2025-08-25	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
5	Ekurhuleni Trials 2025 (G)	2025-07-26	2025-07-26	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
6	2025 Wynie Robbertse Chess Tournament (U10)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
7	South African Open 2025 (U10 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
8	Ekurhuleni Trial 2 2025 (G)	2025-06-21	2025-06-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
9	Ekurhuleni North School District Finals 2025 (U9 Boys)	2025-06-14	2025-06-14	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
10	JMC Helpmekaar 2025 (U10)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
11	Ekurhuleni Trials 2025 (G)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
12	Mzansi Africa Classic 2025 (Rising Stars)	2025-05-17	2025-05-17	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
13	Moja Chess Extravaganza 2025 (U10)	2025-04-26	2025-04-28	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
14	Moja Chess Extravaganza 2025 (Blitz)	2025-04-26	2025-04-26	Blitz	Johannesburg Metro (GJM)	7	5	1	Yes	Analysis
15	JMC Crawford Sandton 2025 (U10)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
16	Benoni Primary School Cluster 12 April 2025 (U9 Open)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Centurion Chess Open Tournament (U10)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	GoForChess Junior Chess Championships 2025 (U10)	2025-09-14	2025-09-14	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
3	Ekurhuleni Trial 4 2025 (G)	2025-09-21	2025-09-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
4	2025 Midstream Open Chess Tournament (U10)	2025-08-25	2025-08-25	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
5	Ekurhuleni Trials 2025 (G)	2025-07-26	2025-07-26	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
6	2025 Wynie Robbertse Chess Tournament (U10)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
7	South African Open 2025 (U10 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
8	Ekurhuleni Trial 2 2025 (G)	2025-06-21	2025-06-21	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
9	Ekurhuleni North School District Finals 2025 (U9 Boys)	2025-06-14	2025-06-14	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
10	JMC Helpmekaar 2025 (U10)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
11	Ekurhuleni Trials 2025 (G)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
12	Mzansi Africa Classic 2025 (Rising Stars)	2025-05-17	2025-05-17	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
13	Moja Chess Extravaganza 2025 (U10)	2025-04-26	2025-04-28	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
14	Moja Chess Extravaganza 2025 (Blitz)	2025-04-26	2025-04-26	Blitz	Johannesburg Metro (GJM)	7	5	1	Yes	Analysis
15	JMC Crawford Sandton 2025 (U10)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
16	Benoni Primary School Cluster 12 April 2025 (U9 Open)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
17	Ekurhuleni North Primary Schools District Individual Finals 2024 (U9 Boys)	2024-05-11	2024-05-11	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
18	Benoni Primary School Cluster Individuals 2024 (U9 Boys)	2024-03-09	2024-03-09	Rapid	Ekurhuleni (GE)	5	5	4	Yes	Analysis

#	Games	Start				End
1	10	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Benoni Primary School Cluster 12 April 2025
		date 2024-05-11	rnd 1	type Standard	result 1	date 2025-04-12	rnd 5	type Standard	result 1
		Opponent Muir, W (Willem Petrus)				Opponent Mendonca, M (Mark)
2	9	Tournament Ekurhuleni Trials 2025				Tournament 2025 Midstream Open Chess Tournament
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-08-25	rnd 4	type Standard	result 1
		Opponent Moorcroft, H (Haileigh)				Opponent Khosana, O (Onalerona)
3	7	Tournament Mzansi Africa Classic 2025				Tournament Ekurhuleni Trials 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Ngwenya, K (Kwena)				Opponent Mendonca, M (Mark)

#	Games	Start				End
1	10	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Benoni Primary School Cluster 12 April 2025
		date 2024-05-11	rnd 1	type Standard	result 1	date 2025-04-12	rnd 5	type Standard	result 1
		Opponent Muir, W (Willem Petrus)				Opponent Mendonca, M (Mark)
2	9	Tournament Ekurhuleni Trials 2025				Tournament 2025 Midstream Open Chess Tournament
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-08-25	rnd 4	type Standard	result 1
		Opponent Moorcroft, H (Haileigh)				Opponent Khosana, O (Onalerona)
3	7	Tournament Mzansi Africa Classic 2025				Tournament Ekurhuleni Trials 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Ngwenya, K (Kwena)				Opponent Mendonca, M (Mark)

#	Games	Start				End
1	4	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-03-09	rnd 1	type Rapid	result 1	date 2024-03-09	rnd 4	type Rapid	result 1
		Opponent Botha, L (Luan)				Opponent Coetzee, O (Oliver)

#	Games	Start				End
1	1	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-26	rnd 7	type Blitz	result 1	date 2025-04-26	rnd 7	type Blitz	result 1
		Opponent Cidraas, O (Omphemetse)				Opponent Cidraas, O (Omphemetse)

#	Games	Start				End
1	10	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Benoni Primary School Cluster 12 April 2025
		date 2024-05-11	rnd 1	type Standard	result 1	date 2025-04-12	rnd 5	type Standard	result 1
		Opponent Muir, W (Willem Petrus)				Opponent Mendonca, M (Mark)
2	9	Tournament Ekurhuleni Trials 2025				Tournament 2025 Midstream Open Chess Tournament
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-08-25	rnd 4	type Standard	result 1
		Opponent Moorcroft, H (Haileigh)				Opponent Khosana, O (Onalerona)
3	5	Tournament Mzansi Africa Classic 2025				Tournament Ekurhuleni Trials 2025
		date 2025-05-17	rnd 5	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Opperman, G (Gert)				Opponent Mendonca, M (Mark)

#	Games	Start				End
1	10	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Benoni Primary School Cluster 12 April 2025
		date 2024-05-11	rnd 1	type Standard	result 1	date 2025-04-12	rnd 5	type Standard	result 1
		Opponent Muir, W (Willem Petrus)				Opponent Mendonca, M (Mark)
2	9	Tournament Ekurhuleni Trials 2025				Tournament 2025 Midstream Open Chess Tournament
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-08-25	rnd 4	type Standard	result 1
		Opponent Moorcroft, H (Haileigh)				Opponent Khosana, O (Onalerona)
3	5	Tournament Mzansi Africa Classic 2025				Tournament Ekurhuleni Trials 2025
		date 2025-05-17	rnd 5	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Opperman, G (Gert)				Opponent Mendonca, M (Mark)

#	Games	Start				End
1	4	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-03-09	rnd 1	type Rapid	result 1	date 2024-03-09	rnd 4	type Rapid	result 1
		Opponent Botha, L (Luan)				Opponent Coetzee, O (Oliver)

#	Games	Start				End
1	1	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-26	rnd 7	type Blitz	result 1	date 2025-04-26	rnd 7	type Blitz	result 1
		Opponent Cidraas, O (Omphemetse)				Opponent Cidraas, O (Omphemetse)

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	Mendonca ,M (Mark)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
1	Mendonca ,M (Mark)	4	1486.9	1699.4	4	1485.7	1699.4	0	0	0	0	0	0
2	Khosana ,O (Onalerona)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
2	Khosana ,O (Onalerona)	4	1658.3	1445.8	4	1657.9	1445.8	0	0	0	0	0	0
3	Thoobe ,N (Noah)	3	3	425	3	3	425	0	0	0	0	0	0
3	Thoobe ,N (Noah)	3	1323.9	1748.9	3	1325.1	1748.9	0	0	0	0	0	0
4	Teixeira ,A (AJ)	3	3	425	3	3	425	0	0	0	0	0	0
4	Teixeira ,A (AJ)	3	1247.2	1672.2	3	1238.9	1672.2	0	0	0	0	0	0
5	Masekela ,L (Lepato)	3	3	425	3	3	425	0	0	0	0	0	0
5	Masekela ,L (Lepato)	3	1334.5	1759.5	3	1325.3	1759.5	0	0	0	0	0	0
6	Diyalani ,D (Dhanush)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
6	Diyalani ,D (Dhanush)	3	1401.5	1259.9	3	1379.1	1259.9	0	0	0	0	0	0
7	Lotlhare ,O (Oreratile)	2	2	425	2	2	425	0	0	0	0	0	0
7	Lotlhare ,O (Oreratile)	2	1424.3	1849.3	2	1425.6	1849.3	0	0	0	0	0	0
8	Kuchibhotla ,AKA (Achyuta Kartikeya Arjun)	2	2	425	2	2	425	0	0	0	0	0	0
8	Kuchibhotla ,AKA (Achyuta Kartikeya Arjun)	2	1467.5	1892.5	2	1472.4	1892.5	0	0	0	0	0	0
9	Newman ,A (Ayen)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
9	Newman ,A (Ayen)	2	1519.4	1306.9	2	1459.7	1306.9	0	0	0	0	0	0
10	Du Pisani ,M (Malcolm)	2	1	0	2	1	0	0	0	0	0	0	0
10	Du Pisani ,M (Malcolm)	2	1470.3	1470.3	2	1469	1470.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Van Dalen, L (Lenert)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms