Chess South Africa Ratings Database

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Personal

Van Zyl, J (Johannes)

Chess SA id

1110116651

FIDE id

Date of birth

2011-02-07 (U16)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-03-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1253.5	1241.8	1223.2	1200
Raw rating	1253.5	1241.8	1223.2	1200
Weighted rating	1253.5	1241.8	1223.2	1200
Weighted performance	670.9	626	0	0
Floor	765.8	767	723.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	153.6	156.2	160.4	165.8
Highest rating	1307 2020-03-01	1303.2 2020-03-01	1239.5 2023-03-01	1200 2018-10-01
Highest raw rating	1265.8 2022-09-01	1267 2022-09-01	1223.2 2024-02-01	1200 2024-02-01
Highest weighted rating	1265.8 2025-02-01	1267 2022-03-01	1223.2 2025-02-01	1200 2018-10-01
Highest weighted performance	1307 2020-03-01	1303.2 2020-03-01	1239.5 2023-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1253.5	1241.8	1223.2	1200
Analysis
Rating	1253.5	1241.8	1223.2	1200
Raw rating	1253.5	1241.8	1223.2	1200
Weighted rating	1253.5	1241.8	1223.2
Weighted performance	670.9	626	0
K-factor	36	36	36	36
Floor	765.8	767	723.2	700
Max/Min rating change allowed	153.6	156.2	160.4	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	1253.5	1241.8	1223.2	1200
New weighted rating	1253.5	1241.8	1223.2	1200
New weighted performance	670.5	625.6	0	0
Temp new rating	1253.5	1241.8	1223.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1253.5	1241.8	1223.2	1200
New K-factor	36	36	36	36
New floor	765.8	767	723.2	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	3	0	3
	26	20	6
	0	0	0
History	44	35	9

Games since
	Main 0	Standard 0		Rapid 0		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	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	44	23.5	53.41	29	1218.4	1247.4
Standard	35	18.5	52.86	24.3	1221.6	1245.9
Rapid	9	5	55.56	47.2	1205.9	1253.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1253.5	1241.8	1223.2	1200
2025-09-01	1253.5	1241.8	1223.2	1200
2025-08-01	1253.5	1241.8	1223.2	1200
2025-07-01	1253.5	1241.8	1223.2	1200
2025-06-01	1253.5	1241.8	1223.2	1200
2025-05-01	1253.5	1241.8	1223.2	1200
2025-04-01	1253.5	1241.8	1223.2	1200
2025-03-01	1253.5	1241.8	1223.2	1200
2025-02-01	1253.5	1241.8	1223.2	1200
2025-01-01	1253.5	1241.8	1223.2	1200
2024-12-01	1253.5	1241.8	1223.2	1200
2024-11-01	1253.5	1241.8	1223.2	1200
2024-10-01	1253.5	1241.8	1223.2	1200
2024-09-01	1253.5	1241.8	1223.2	1200
2024-08-01	1253.5	1241.8	1223.2	1200
2024-07-01	1253.5	1241.8	1223.2	1200
2024-06-01	1253.5	1241.8	1223.2	1200
2024-08-01	1253.5	1241.8	1223.2	1200
2024-04-01	1253.5	1241.8	1223.2	1200
2024-03-01	1253.5	1241.8	1223.2	1200
2024-02-01	1253.5	1241.8	1223.2	1200
2024-01-01	1253.5	1241.8	1223.2	1200
2023-12-01	1253.5	1241.8	1223.2	1200
2023-11-01	1253.5	1241.8	1223.2	1200

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	Overberg Schools Bredasdorp Zone Trails 2023 (U13)	2023-02-16	2023-03-02	Rapid	Overberg (WOS)	6	3	2	Yes	Analysis
2	Western Cape Top Schools 2022 (U11 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	2	Yes	Analysis
3	Overberg Topskole 2022 (O11)	2022-08-30	2022-08-30	Standard	Overberg (WOS)	6	4	4	Yes	Analysis
4	The Hermanus Open 2022 (U12)	2022-05-14	2022-05-14	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
5	Western Cape Schools 2022 (U11 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
6	Overberg Primary Schools Closed 2022 (U11 Boys)	2022-03-12	2022-03-12	Standard	Overberg (WOS)	5	5	2.5	Yes	Analysis
7	Overberg Closed 2020 (U9 Boys)	2020-03-15	2020-03-15	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
8	OCF Chess Tournament 3 2020 (U10)	2020-03-07	2020-03-07	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
9	Overberg Top Schools 2019 (U11)	2019-07-20	2019-07-20	Standard	Overberg (WOS)	5	5	1	Yes	Analysis

#	Games	Start				End
1	5	Tournament Western Cape Schools 2022				Tournament Overberg Topskole 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-08-30	rnd 6	type Standard	result 1
		Opponent Frieslaar, J (Junior)				Opponent Van Der Merwe, D (Dante)
2	4	Tournament Overberg Closed 2020				Tournament Overberg Primary Schools Closed 2022
		date 2020-03-15	rnd 4	type Standard	result 1	date 2022-03-12	rnd 2	type Standard	result 1
		Opponent Du Plessis, J (Jan-Dawid)				Opponent Horne, A (Armandt)
3	3	Tournament Western Cape Top Schools 2022				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2022-09-17	rnd 5	type Standard	result 1	date 2023-02-16	rnd 2	type Rapid	result 1
		Opponent Pekeur, T (Thelmay)				Opponent Muggels, C (Chadwin)

#	Games	Start				End
1	5	Tournament Western Cape Schools 2022				Tournament Overberg Topskole 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-08-30	rnd 6	type Standard	result 1
		Opponent Frieslaar, J (Junior)				Opponent Van Der Merwe, D (Dante)
2	4	Tournament Overberg Closed 2020				Tournament Overberg Primary Schools Closed 2022
		date 2020-03-15	rnd 4	type Standard	result 1	date 2022-03-12	rnd 2	type Standard	result 1
		Opponent Du Plessis, J (Jan-Dawid)				Opponent Horne, A (Armandt)
3	3	Tournament OCF Chess Tournament 3 2020				Tournament OCF Chess Tournament 3 2020
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Lethabo, F (Fihla)				Opponent Foye, L (Logan)

#	Games	Start				End
1	3	Tournament The Hermanus Open 2022				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2022-05-14	rnd 6	type Rapid	result 1	date 2023-02-16	rnd 2	type Rapid	result 1
		Opponent Foye, L (Logan)				Opponent Muggels, C (Chadwin)
2	1	Tournament The Hermanus Open 2022				Tournament The Hermanus Open 2022
		date 2022-05-14	rnd 4	type Rapid	result 1	date 2022-05-14	rnd 4	type Rapid	result 1
		Opponent Diederiks, K (Katryn)				Opponent Diederiks, K (Katryn)
3	1	Tournament The Hermanus Open 2022				Tournament The Hermanus Open 2022
		date 2022-05-14	rnd 2	type Rapid	result 1	date 2022-05-14	rnd 2	type Rapid	result 1
		Opponent Nel, A (Anika)				Opponent Nel, A (Anika)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Western Cape Schools 2022				Tournament Overberg Topskole 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-08-30	rnd 6	type Standard	result 1
		Opponent Frieslaar, J (Junior)				Opponent Van Der Merwe, D (Dante)
2	4	Tournament Overberg Closed 2020				Tournament Overberg Primary Schools Closed 2022
		date 2020-03-15	rnd 4	type Standard	result 1	date 2022-03-12	rnd 2	type Standard	result 1
		Opponent Du Plessis, J (Jan-Dawid)				Opponent Horne, A (Armandt)
3	3	Tournament Western Cape Top Schools 2022				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2022-09-17	rnd 5	type Standard	result 1	date 2023-02-16	rnd 2	type Rapid	result 1
		Opponent Pekeur, T (Thelmay)				Opponent Muggels, C (Chadwin)

#	Games	Start				End
1	5	Tournament Western Cape Schools 2022				Tournament Overberg Topskole 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-08-30	rnd 6	type Standard	result 1
		Opponent Frieslaar, J (Junior)				Opponent Van Der Merwe, D (Dante)
2	4	Tournament Overberg Closed 2020				Tournament Overberg Primary Schools Closed 2022
		date 2020-03-15	rnd 4	type Standard	result 1	date 2022-03-12	rnd 2	type Standard	result 1
		Opponent Du Plessis, J (Jan-Dawid)				Opponent Horne, A (Armandt)
3	3	Tournament OCF Chess Tournament 3 2020				Tournament OCF Chess Tournament 3 2020
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Lethabo, F (Fihla)				Opponent Foye, L (Logan)

#	Games	Start				End
1	3	Tournament The Hermanus Open 2022				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2022-05-14	rnd 6	type Rapid	result 1	date 2023-02-16	rnd 2	type Rapid	result 1
		Opponent Foye, L (Logan)				Opponent Muggels, C (Chadwin)
2	1	Tournament The Hermanus Open 2022				Tournament The Hermanus Open 2022
		date 2022-05-14	rnd 4	type Rapid	result 1	date 2022-05-14	rnd 4	type Rapid	result 1
		Opponent Diederiks, K (Katryn)				Opponent Diederiks, K (Katryn)
3	1	Tournament The Hermanus Open 2022				Tournament The Hermanus Open 2022
		date 2022-05-14	rnd 2	type Rapid	result 1	date 2022-05-14	rnd 2	type Rapid	result 1
		Opponent Nel, A (Anika)				Opponent Nel, A (Anika)

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	Lethabo ,F (Fihla)	3	3	425	3	3	425	0	0	0	0	0	0
1	Lethabo ,F (Fihla)	3	1216.4	1641.4	3	1217.3	1641.4	0	0	0	0	0	0
2	Prinsloo ,L (Lyle)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Prinsloo ,L (Lyle)	2	1306.1	881.1	2	1262.9	881.1	0	0	0	0	0	0
3	Foye ,L (Logan)	2	2	425	1	1	425	1	1	425	0	0	0
3	Foye ,L (Logan)	2	1228.5	1653.5	1	1200	1653.5	1	1200	1653.5	0	0	0
4	Drury ,R (Riko)	1	1	425	1	1	425	0	0	0	0	0	0
4	Drury ,R (Riko)	1	1130.9	1555.9	1	1116.8	1555.9	0	0	0	0	0	0
5	Pieters ,A (Angelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Pieters ,A (Angelo)	1	1308.4	883.4	1	1206.4	883.4	0	0	0	0	0	0
6	Lotz ,J (Johndre)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Lotz ,J (Johndre)	1	1185.1	760.1	1	1182	760.1	0	0	0	0	0	0
7	Horne ,A (Armandt)	1	1	425	1	1	425	0	0	0	0	0	0
7	Horne ,A (Armandt)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Van Der Walt ,A (Andries)	1	1	425	1	1	425	0	0	0	0	0	0
8	Van Der Walt ,A (Andries)	1	1148.9	1573.9	1	1136.8	1573.9	0	0	0	0	0	0
9	Van Der Merwe ,D (Dante)	1	1	425	1	1	425	0	0	0	0	0	0
9	Van Der Merwe ,D (Dante)	1	1134.3	1559.3	1	1120.8	1559.3	0	0	0	0	0	0
10	Erasmus ,A (Austin)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Erasmus ,A (Austin)	1	1283	858	1	1200	858	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 (Johannes)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms