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

2025-09-13

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1410.7	1411.9	1409	1409
Raw rating	1352.9	1343.6	1409	1409
Weighted rating	1410.7	1411.9	1408.3	1408.3
Weighted performance	0	0	0	0
Floor	924.4	927.6	909	909
K-factor	32	32	32	32
Min/Max rating change allowed	133.4	135.1	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	1410.7 2025-11-01	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	-4.2	-5.1	0	0
New rating	1406.5	1406.9	1409	1409
Analysis
Rating	1410.7	1411.9	1409	1409
Raw rating	1352.9	1343.6	1409	1409
Weighted rating	1410.7	1411.9	1408.3
Weighted performance	0	0	0
K-factor	32	32	32	32
Floor	924.4	927.6	909	909
Max/Min rating change allowed	133.4	135.1	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	1352.9	1343.6	1409	1409
New weighted rating	1406.5	1406.9	1409	1409
New weighted performance	0	0	0	0
Temp new rating	1406.5	1406.9	1409	1409
Temp new rating +/-	-4.2	-5.1	0	0
Final new rating +/-	-4.2	-5.1	0	0
New rating	1406.5	1406.9	1409	1409
New K-factor	32	32	32	32
New floor	924.4	927.6	909	909

Item	Main	Standard
	0	0
	14	14
	3	3
	0	0
	0	0
	0	0
History	17	17

Games since
	Main 17	Standard 17		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	14	3.5	25	-212.5	1463	1250.5
Standard	14	3.5	25	-212.5	1463	1250.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	17	5.5	32.35	-150	1455.8	1305.8
Standard	17	5.5	32.35	-150	1455.8	1305.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1352.9	1343.6	1409	1409
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
2024-09-01	1424.4	1427.6	1409	1409
2024-05-01	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

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	TRAC Mbombela 3rd Annual Tournament 2025 (Open)	2025-09-13	2025-09-13	Standard	Ehlanzeni (MEN)	5	4	1	Yes	Analysis
2	Mpumalanga Regional Chess Trials 2025 (Open)	2025-09-06	2025-09-06	Standard	Ehlanzeni (MEN)	5	5	0	Yes	Analysis
3	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	TRAC Mbombela 3rd Annual Tournament 2025 (Open)	2025-09-13	2025-09-13	Standard	Ehlanzeni (MEN)	5	4	1	Yes	Analysis
2	Mpumalanga Regional Chess Trials 2025 (Open)	2025-09-06	2025-09-06	Standard	Ehlanzeni (MEN)	5	5	0	Yes	Analysis
3	Mpumalanga Open Chess Championship 2025 (B)	2025-04-19	2025-04-19	Standard	Ehlanzeni (MEN)	5	5	2.5	Yes	Analysis
4	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 TRAC Mbombela 3rd Annual Tournament 2025				Tournament TRAC Mbombela 3rd Annual Tournament 2025
		date 2025-09-13	rnd 2	type Standard	result 1	date 2025-09-13	rnd 2	type Standard	result 1
		Opponent Sithole, J (Jacob)				Opponent Sithole, J (Jacob)
3	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)

#	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	Mxhego ,Z (Zwelithini)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Mxhego ,Z (Zwelithini)	1	1300.1	875.1	1	1296.9	875.1	0	0	0	0	0	0
2	Mnisi ,MA (Mfanuzile Abednego)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Mnisi ,MA (Mfanuzile Abednego)	1	1474	1049	1	1465.3	1049	0	0	0	0	0	0
3	Ritshuri ,N (Nkateko)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Ritshuri ,N (Nkateko)	1	1354.6	929.6	1	1341.2	929.6	0	0	0	0	0	0
4	Ndimande ,N (Nqobani)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Ndimande ,N (Nqobani)	1	1618.4	1193.4	1	1645.1	1193.4	0	0	0	0	0	0
5	Tholo ,P (Phumuza)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Tholo ,P (Phumuza)	1	1590.2	1165.2	1	1542.8	1165.2	0	0	0	0	0	0
6	Sithole ,J (Jacob)	1	1	425	1	1	425	0	0	0	0	0	0
6	Sithole ,J (Jacob)	1	1229.5	1654.5	1	1235.4	1654.5	0	0	0	0	0	0
7	Nkambule ,M (Muzi)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Nkambule ,M (Muzi)	1	1638.5	1213.5	1	1622.2	1213.5	0	0	0	0	0	0
8	Manana ,KN (Kenneth)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Manana ,KN (Kenneth)	1	1747.2	1322.2	1	1739.8	1322.2	0	0	0	0	0	0
9	Gemmell ,Z (Zac)	1	1	425	1	1	425	0	0	0	0	0	0
9	Gemmell ,Z (Zac)	1	1344.1	1769.1	1	1345	1769.1	0	0	0	0	0	0
10	Maharaj ,A (Arya)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Maharaj ,A (Arya)	1	1427	1002	1	1467.4	1002	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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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