Chess South Africa Ratings Database

PLAYER PAGE

Personal

Roets, JZ (Johannes Zacharia)

Chess SA id

188032411

FIDE id

Date of birth

1988-02-08 (Adult)

Gender

Male

Region

Gert Sibande (MGS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-04-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1414.4	1416.5	1409	1409
Raw rating	1410.3	1412.4	1409	1409
Weighted rating	1414.4	1416.5	1406.9	1406.9
Weighted performance	0	0	0	0
Floor	924.4	927.6	909	909
K-factor	32	32	32	32
Min/Max rating change allowed	122.9	122.5	123.1	123.1
Highest rating	1566.7 2024-04-01	1566.4 2024-04-01	1409 2024-02-01	1409 2024-02-01
Highest raw rating	1424.4 2024-05-01	1427.6 2024-05-01	1409 2024-02-01	1409 2024-02-01
Highest weighted rating	1410.3 2025-08-01	1412.4 2025-08-01	1402 2025-08-01	1402 2025-08-01
Highest weighted performance	1566.7 2024-04-01	1566.4 2024-04-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.9	0.9	0	0
New rating	1415.3	1417.4	1409	1409
Analysis
Rating	1414.4	1416.5	1409	1409
Raw rating	1410.3	1412.4	1409	1409
Weighted rating	1414.4	1416.5	1406.9
Weighted performance	0	0	0
K-factor	32	32	32	32
Floor	924.4	927.6	909	909
Max/Min rating change allowed	122.9	122.5	123.1	123.1
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	1410.3	1412.4	1409	1409
New weighted rating	1415.3	1417.4	1408.3	1408.3
New weighted performance	0	0	0	0
Temp new rating	1415.3	1417.4	1409	1409
Temp new rating +/-	0.9	0.9	0	0
Final new rating +/-	0.9	0.9	0	0
New rating	1415.3	1417.4	1409	1409
New K-factor	32	32	32	32
New floor	924.4	927.6	909	909

Item	Main	Standard
	0	0
	5	5
	3	3
	0	0
	0	0
	0	0
History	8	8

Games since
	Main 8	Standard 8		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Gert Sibande (MGS)
Province	Mpumalanga (MP)
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	5	2.5	50	0	1315.2	1315.2
Standard	5	2.5	50	0	1315.2	1315.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	8	4.5	56.25	53.1	1355.4	1408.5
Standard	8	4.5	56.25	53.1	1355.4	1408.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1410.3	1412.4	1409	1409
2025-09-01	1410.3	1412.4	1409	1409
2025-08-01	1410.3	1412.4	1409	1409
2025-07-01	1407.4	1409.3	1409	1409
2025-06-01	1405.9	1406	1409	1409
2025-05-01	1405.9	1404.8	1409	1409
2025-04-01	1424.4	1427.6	1409	1409
2025-03-01	1424.4	1427.6	1409	1409
2025-02-01	1424.4	1427.6	1409	1409
2025-01-01	1424.4	1427.6	1409	1409
2024-12-01	1424.4	1427.6	1409	1409
2024-11-01	1424.4	1427.6	1409	1409
2024-10-01	1424.4	1427.6	1409	1409
2024-09-01	1424.4	1427.6	1409	1409
2024-08-01	1424.4	1427.6	1409	1409
2024-07-01	1424.4	1427.6	1409	1409
2024-06-01	1424.4	1427.6	1409	1409
2024-08-01	1424.4	1427.6	1409	1409
2024-04-01	1409	1409	1409	1409
2024-03-01	1409	1409	1409	1409
2024-02-01	1409	1409	1409	1409
2024-01-01	1409	1409	1409	1409
2023-12-01	1200	1200	1200	1200
2023-11-01	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	Mpumalanga Open Chess Championship 2025 (B)	2025-04-19	2025-04-19	Standard	Ehlanzeni (MEN)	5	5	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Mpumalanga Open Chess Championship 2025 (B)	2025-04-19	2025-04-19	Standard	Ehlanzeni (MEN)	5	5	2.5	Yes	Analysis
2	Ekurhuleni Open 2024 (B)	2024-04-06	2024-04-06	Standard	Ekurhuleni (GE)	5	3	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament Ekurhuleni Open 2024				Tournament Ekurhuleni Open 2024
		date 2024-04-06	rnd 1	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent Gemmell, Z (Zac)				Opponent Ambrose, I (Isabella)
2	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 5	type Standard	result 1	date 2025-04-19	rnd 5	type Standard	result 1
		Opponent Stephen, J (Jeron)				Opponent Stephen, J (Jeron)
3	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 3	type Standard	result 1	date 2025-04-19	rnd 3	type Standard	result 1
		Opponent Ndala, B (Bongani)				Opponent Ndala, B (Bongani)

#	Games	Start				End
1	2	Tournament Ekurhuleni Open 2024				Tournament Ekurhuleni Open 2024
		date 2024-04-06	rnd 1	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent Gemmell, Z (Zac)				Opponent Ambrose, I (Isabella)
2	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 5	type Standard	result 1	date 2025-04-19	rnd 5	type Standard	result 1
		Opponent Stephen, J (Jeron)				Opponent Stephen, J (Jeron)
3	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 3	type Standard	result 1	date 2025-04-19	rnd 3	type Standard	result 1
		Opponent Ndala, B (Bongani)				Opponent Ndala, B (Bongani)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Ekurhuleni Open 2024				Tournament Ekurhuleni Open 2024
		date 2024-04-06	rnd 1	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent Gemmell, Z (Zac)				Opponent Ambrose, I (Isabella)
2	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 5	type Standard	result 1	date 2025-04-19	rnd 5	type Standard	result 1
		Opponent Stephen, J (Jeron)				Opponent Stephen, J (Jeron)
3	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 3	type Standard	result 1	date 2025-04-19	rnd 3	type Standard	result 1
		Opponent Ndala, B (Bongani)				Opponent Ndala, B (Bongani)

#	Games	Start				End
1	2	Tournament Ekurhuleni Open 2024				Tournament Ekurhuleni Open 2024
		date 2024-04-06	rnd 1	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent Gemmell, Z (Zac)				Opponent Ambrose, I (Isabella)
2	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 5	type Standard	result 1	date 2025-04-19	rnd 5	type Standard	result 1
		Opponent Stephen, J (Jeron)				Opponent Stephen, J (Jeron)
3	1	Tournament Mpumalanga Open Chess Championship 2025				Tournament Mpumalanga Open Chess Championship 2025
		date 2025-04-19	rnd 3	type Standard	result 1	date 2025-04-19	rnd 3	type Standard	result 1
		Opponent Ndala, B (Bongani)				Opponent Ndala, B (Bongani)

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	Maharaj ,A (Arya)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Maharaj ,A (Arya)	1	1427	1002	1	1467.4	1002	0	0	0	0	0	0
2	Ritshuri ,N (Nkateko)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Ritshuri ,N (Nkateko)	1	1354.6	929.6	1	1341.2	929.6	0	0	0	0	0	0
3	Ambrose ,I (Isabella)	1	1	425	1	1	425	0	0	0	0	0	0
3	Ambrose ,I (Isabella)	1	1496.1	1921.1	1	1453.7	1921.1	0	0	0	0	0	0
4	Gemmell ,Z (Zac)	1	1	425	1	1	425	0	0	0	0	0	0
4	Gemmell ,Z (Zac)	1	1344.1	1769.1	1	1345	1769.1	0	0	0	0	0	0
5	Stephen ,J (Jeron)	1	1	425	1	1	425	0	0	0	0	0	0
5	Stephen ,J (Jeron)	1	1416.5	1841.5	1	1417	1841.5	0	0	0	0	0	0
6	Nkambule ,N (Njabulo)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Nkambule ,N (Njabulo)	1	1304.9	1304.9	1	1306.1	1304.9	0	0	0	0	0	0
7	Ndala ,B (Bongani)	1	1	425	1	1	425	0	0	0	0	0	0
7	Ndala ,B (Bongani)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Mxhego ,Z (Zwelithini)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Mxhego ,Z (Zwelithini)	1	1300.1	875.1	1	1296.9	875.1	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

Roets, JZ (Johannes Zacharia)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms