Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Zyl, J (Jan)

Chess SA id

104076502

FIDE id

Date of birth

2004-05-20 (Adult)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1170.5	1147.1	1057.5	837.7
Raw rating	1170.5	1147.1	1057.5	837.7
Weighted rating	1142	1147.1	977.6	837.6
Weighted performance	724.5	384	0	0
Floor	671	685.9	557.5	500
K-factor	40	40	40	40
Min/Max rating change allowed	172.9	178.8	203.1	277.9
Highest rating	1302 2018-05-01	1309.3 2018-08-01	1245.6 2018-08-01	1200 2024-02-01
Highest raw rating	1171 2020-02-01	1185.9 2020-02-01	1057.5 2025-09-30	837.7 2024-02-01
Highest weighted rating	1171 2024-11-01	1185.9 2024-11-01	977.6 2025-09-30	837.7 2024-11-01
Highest weighted performance	1302 2018-05-01	1309.3 2018-08-01	1245.6 2018-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1170.5	1147.1	1057.5	837.7
Analysis
Rating	1170.5	1147.1	1057.5	837.7
Raw rating	1170.5	1147.1	1057.5	837.7
Weighted rating	1142	1147.1	977.6
Weighted performance	724.5	384	0
K-factor	40	40	40	40
Floor	671	685.9	557.5	500
Max/Min rating change allowed	172.9	178.8	203.1	277.9
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	1170.5	1147.1	1057.5	837.7
New weighted rating	1144.4	1147.1	984.3	837.7
New weighted performance	724.1	383.6	0	0
Temp new rating	1170.5	1147.1	1057.5	837.7
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1170.5	1147.1	1057.5	837.7
New K-factor	40	40	40	40
New floor	671	685.9	557.5	500

Item	Main	Standard	Rapid
	0	0	0
	7	0	7
	0	0	0
	0	0	0
	4	4	0
	0	0	0
History	205	152	53

Games since
	Main 7	Standard 0		Rapid 7		Blitz 0
Gender	Male
Age group	Adult
Region	Ekurhuleni (GE)
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	7	3	42.86	-60.7	1482.6	1421.9
Standard	0	0	0	0	0	0
Rapid	7	3	42.86	-60.7	1482.6	1421.9
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	42	22.5	53.57	30.4	1262.3	1292.7
Standard	28	15.5	55.36	45.5	1222.9	1268.5
Rapid	14	7	50	0	1341	1341
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1170.5	1147.1	1057.5	837.7
2025-09-01	1139.5	1147.1	970.7	837.7
2025-08-01	1139.5	1147.1	970.7	837.7
2025-07-01	1139.5	1147.1	970.7	837.7
2025-06-01	1139.5	1147.1	970.7	837.7
2025-05-01	1139.5	1147.1	970.7	837.7
2025-04-01	1139.5	1147.1	970.7	837.7
2025-03-01	1139.5	1147.1	970.7	837.7
2025-02-01	1139.5	1147.1	970.7	837.7
2025-01-01	1139.5	1147.1	970.7	837.7
2024-12-01	1139.5	1147.1	970.7	837.7
2024-11-01	1139.5	1147.1	970.7	837.7
2024-10-01	1139.5	1147.1	970.7	837.7
2024-09-01	1139.5	1147.1	970.7	837.7
2024-08-01	1139.5	1147.1	970.7	837.7
2024-07-01	1139.5	1147.1	970.7	837.7
2024-06-01	1139.5	1147.1	970.7	837.7
2024-08-01	1139.5	1147.1	970.7	837.7
2024-04-01	1139.5	1147.1	970.7	837.7
2024-03-01	1139.5	1147.1	970.7	837.7
2024-02-01	1139.5	1147.1	970.7	837.7
2024-01-01	1139.5	1147.1	970.7	837.7
2023-12-01	1139.5	1147.1	970.7	836.3
2023-11-01	1139.5	1147.1	970.7	836.3

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	LCA 307 Gaming Zone Rapid 2025 (Premier)	2025-09-07	2025-09-07	Rapid	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	LCA 307 Gaming Zone Rapid 2025 (Premier)	2025-09-07	2025-09-07	Rapid	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
2	Ekurhuleni-North Schools Teams 2022 (U18)	2022-08-13	2022-08-13	Standard	Ekurhuleni (GE)	5	4	0	Yes	Analysis
3	2019 South African Top Schools Team Championships (U15+U17 Open)	2020-01-10	2020-01-11	Standard	4 Knights (4K)	5	4	1	Yes	Analysis
4	2019 Gauteng School League Finals (U15 Open)	2019-08-24	2019-08-24	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
5	2018 Gauteng League Final (U15)	2018-08-25	2018-08-25	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
6	Ekurhuleni North Womens Day Tournament (Male)	2018-08-09	2018-08-09	Rapid	Ekurhuleni (GE)	7	7	4	Yes	Analysis
7	Ekurhuleni North District Schools Final 2018 (U15)	2018-08-04	2018-08-04	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
8	Ekurhuleni North Schools Individuals 2018 (U15 Boys)	2018-05-12	2018-05-12	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Ekurhuleni North District Schools Final 2018				Tournament Ekurhuleni North Womens Day Tournament
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-08-09	rnd 1	type Rapid	result 1
		Opponent Alex, M (Marilyn)				Opponent Dimpe, T (Tshepo)
2	4	Tournament 2018 Gauteng League Final				Tournament 2019 Gauteng School League Finals
		date 2018-08-25	rnd 5	type Standard	result 0.5	date 2019-08-24	rnd 3	type Standard	result 1
		Opponent Jones, A (Aaron Lee)				Opponent Pather, J (Juveshan)
3	3	Tournament LCA 307 Gaming Zone Rapid 2025				Tournament LCA 307 Gaming Zone Rapid 2025
		date 2025-09-07	rnd 2	type Rapid	result 1	date 2025-09-07	rnd 4	type Rapid	result 1
		Opponent Magakwa, B (Boykie)				Opponent Kadiaka, L (Lerato)

#	Games	Start				End
1	7	Tournament Ekurhuleni North District Schools Final 2018				Tournament 2018 Gauteng League Final
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-08-25	rnd 2	type Standard	result 1
		Opponent Alex, M (Marilyn)				Opponent Mashala, ML (Maphula)
2	4	Tournament 2018 Gauteng League Final				Tournament 2019 Gauteng School League Finals
		date 2018-08-25	rnd 5	type Standard	result 0.5	date 2019-08-24	rnd 3	type Standard	result 1
		Opponent Jones, A (Aaron Lee)				Opponent Pather, J (Juveshan)
3	2	Tournament Ekurhuleni North Schools Individuals 2018				Tournament Ekurhuleni North Schools Individuals 2018
		date 2018-05-12	rnd 1	type Standard	result 1	date 2018-05-12	rnd 2	type Standard	result 1
		Opponent Mshengu, M (Mxolisi Siyanda)				Opponent Huang, J (Jyh-Shiuan)

#	Games	Start				End
1	3	Tournament LCA 307 Gaming Zone Rapid 2025				Tournament LCA 307 Gaming Zone Rapid 2025
		date 2025-09-07	rnd 2	type Rapid	result 1	date 2025-09-07	rnd 4	type Rapid	result 1
		Opponent Magakwa, B (Boykie)				Opponent Kadiaka, L (Lerato)
2	3	Tournament Ekurhuleni North Womens Day Tournament				Tournament Ekurhuleni North Womens Day Tournament
		date 2018-08-09	rnd 4	type Rapid	result 1	date 2018-08-09	rnd 6	type Rapid	result 1
		Opponent Magwete, N (Ndinae)				Opponent Viljoen, H (Henning)
3	1	Tournament Ekurhuleni North Womens Day Tournament				Tournament Ekurhuleni North Womens Day Tournament
		date 2018-08-09	rnd 1	type Rapid	result 1	date 2018-08-09	rnd 1	type Rapid	result 1
		Opponent Dimpe, T (Tshepo)				Opponent Dimpe, T (Tshepo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Ekurhuleni North District Schools Final 2018				Tournament Ekurhuleni North Womens Day Tournament
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-08-09	rnd 1	type Rapid	result 1
		Opponent Alex, M (Marilyn)				Opponent Dimpe, T (Tshepo)
2	3	Tournament LCA 307 Gaming Zone Rapid 2025				Tournament LCA 307 Gaming Zone Rapid 2025
		date 2025-09-07	rnd 2	type Rapid	result 1	date 2025-09-07	rnd 4	type Rapid	result 1
		Opponent Magakwa, B (Boykie)				Opponent Kadiaka, L (Lerato)
3	3	Tournament 2019 Gauteng School League Finals				Tournament 2019 Gauteng School League Finals
		date 2019-08-24	rnd 1	type Standard	result 1	date 2019-08-24	rnd 3	type Standard	result 1
		Opponent Odewale, D (Deviine)				Opponent Pather, J (Juveshan)

#	Games	Start				End
1	7	Tournament Ekurhuleni North District Schools Final 2018				Tournament 2018 Gauteng League Final
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-08-25	rnd 2	type Standard	result 1
		Opponent Alex, M (Marilyn)				Opponent Mashala, ML (Maphula)
2	3	Tournament 2019 Gauteng School League Finals				Tournament 2019 Gauteng School League Finals
		date 2019-08-24	rnd 1	type Standard	result 1	date 2019-08-24	rnd 3	type Standard	result 1
		Opponent Odewale, D (Deviine)				Opponent Pather, J (Juveshan)
3	2	Tournament Ekurhuleni North Schools Individuals 2018				Tournament Ekurhuleni North Schools Individuals 2018
		date 2018-05-12	rnd 1	type Standard	result 1	date 2018-05-12	rnd 2	type Standard	result 1
		Opponent Mshengu, M (Mxolisi Siyanda)				Opponent Huang, J (Jyh-Shiuan)

#	Games	Start				End
1	3	Tournament LCA 307 Gaming Zone Rapid 2025				Tournament LCA 307 Gaming Zone Rapid 2025
		date 2025-09-07	rnd 2	type Rapid	result 1	date 2025-09-07	rnd 4	type Rapid	result 1
		Opponent Magakwa, B (Boykie)				Opponent Kadiaka, L (Lerato)
2	3	Tournament Ekurhuleni North Womens Day Tournament				Tournament Ekurhuleni North Womens Day Tournament
		date 2018-08-09	rnd 4	type Rapid	result 1	date 2018-08-09	rnd 6	type Rapid	result 1
		Opponent Magwete, N (Ndinae)				Opponent Viljoen, H (Henning)
3	1	Tournament Ekurhuleni North Womens Day Tournament				Tournament Ekurhuleni North Womens Day Tournament
		date 2018-08-09	rnd 1	type Rapid	result 1	date 2018-08-09	rnd 1	type Rapid	result 1
		Opponent Dimpe, T (Tshepo)				Opponent Dimpe, T (Tshepo)

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	Vorster ,T (Tyrone)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Vorster ,T (Tyrone)	2	1298.2	873.2	1	1262.5	873.2	1	1070.6	873.2	0	0	0
2	Mokwena ,K (Kole)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Mokwena ,K (Kole)	1	1533.5	1108.5	1	1535.2	1108.5	0	0	0	0	0	0
3	Kgaswane ,T (Thato)	1	1	425	1	1	425	0	0	0	0	0	0
3	Kgaswane ,T (Thato)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Mshengu ,M (Mxolisi Siyanda)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mshengu ,M (Mxolisi Siyanda)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Maduna ,S (Sanele)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Maduna ,S (Sanele)	1	1101.7	676.7	1	1082.4	676.7	0	0	0	0	0	0
6	Du Toit ,GJ (Gerhardus (Eghardt) Johannes)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Du Toit ,GJ (Gerhardus (Eghardt) Johannes)	1	1500.9	1075.9	1	1503.4	1075.9	0	0	0	0	0	0
7	Jacobs ,CN (Calvin Nicholas)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Jacobs ,CN (Calvin Nicholas)	1	1642.6	1217.6	1	1639	1217.6	0	0	0	0	0	0
8	De Swardt ,E (Eduan)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	De Swardt ,E (Eduan)	1	1563.4	1138.4	1	1593.1	1138.4	0	0	0	0	0	0
9	Jesus De Pinho ,R (Rafael)	1	1	425	1	1	425	0	0	0	0	0	0
9	Jesus De Pinho ,R (Rafael)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Thebe ,RC (Reabetswe Calvin)	1	1	425	1	1	425	0	0	0	0	0	0
10	Thebe ,RC (Reabetswe Calvin)	1	1270.3	1695.3	1	1267.4	1695.3	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 Zyl, J (Jan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms