Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Zyl, JM (Johannes Martin)

Chess SA id

1430106795

FIDE id

Date of birth

1943-10-07 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1262.4	1222.1	1244.4	1090.9
Raw rating	1262.4	1222.1	1244.4	1090.9
Weighted rating	1231.6	1217.9	1185.7	1090.9
Weighted performance	850	0	0	0
Floor	776	781.4	744.4	590.9
K-factor	36	36	36	40
Min/Max rating change allowed	151.7	160.7	155.6	193.7
Highest rating	1369.9 2018-09-01	1377.4 2019-08-01	1303.3 2018-10-01	1200 2024-02-01
Highest raw rating	1276 2019-09-01	1281.4 2019-09-01	1244.4 2025-08-01	1090.9 2024-02-01
Highest weighted rating	1276 2022-03-01	1281.4 2022-03-01	1174.2 2025-08-01	1090.9 2024-11-01
Highest weighted performance	1369.9 2018-09-01	1377.4 2019-08-01	1303.3 2018-10-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1262.4	1222.1	1244.4	1090.9
Analysis
Rating	1262.4	1222.1	1244.4	1090.9
Raw rating	1262.4	1222.1	1244.4	1090.9
Weighted rating	1231.6	1217.9	1185.7
Weighted performance	850	0	0
K-factor	36	36	36	40
Floor	776	781.4	744.4	590.9
Max/Min rating change allowed	151.7	160.7	155.6	193.7
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	1262.4	1222.1	1244.4	1090.9
New weighted rating	1234.1	1217.8	1191	1090.9
New weighted performance	849.6	0	0	0
Temp new rating	1262.4	1222.1	1244.4	1090.9
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1262.4	1222.1	1244.4	1090.9
New K-factor	36	36	36	40
New floor	776	781.4	744.4	590.9

Item	Main	Standard	Rapid
	0	0	0
	11	4	7
	9	9	0
	5	5	0
	0	0	0
	0	0	0
History	91	71	20

Games since
	Main 20	Standard 13		Rapid 7		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
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	11	6	54.55	38.6	1353.9	1392.5
Standard	4	2	50	0	1260.3	1260.3
Rapid	7	4	57.14	60.7	1407.4	1468.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	71	35.5	50	0	1279.1	1279.1
Standard	51	24	47.06	-25	1287.6	1262.6
Rapid	20	11.5	57.5	63.8	1257.6	1321.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1262.4	1222.1	1244.4	1090.9
2025-09-01	1262.4	1222.1	1244.4	1090.9
2025-08-01	1262.4	1222.1	1244.4	1090.9
2025-07-01	1230.1	1222.1	1168.1	1090.9
2025-06-01	1230.1	1222.1	1168.1	1090.9
2025-05-01	1230.1	1222.1	1168.1	1090.9
2025-04-01	1230.1	1222.1	1168.1	1090.9
2025-03-01	1224.4	1221.2	1168.1	1090.9
2025-02-01	1222.7	1219	1168.1	1090.9
2025-01-01	1188.2	1175.5	1168.1	1090.9
2024-12-01	1188.2	1175.5	1168.1	1090.9
2024-11-01	1188.2	1175.5	1168.1	1090.9
2024-10-01	1188.2	1175.5	1168.1	1090.9
2024-09-01	1240.8	1242.1	1168.1	1090.9
2024-08-01	1240.8	1242.1	1168.1	1090.9
2024-07-01	1240.8	1242.1	1168.1	1090.9
2024-06-01	1240.8	1242.1	1168.1	1090.9
2024-08-01	1240.8	1242.1	1168.1	1090.9
2024-04-01	1240.8	1242.1	1168.1	1090.9
2024-03-01	1240.8	1242.1	1168.1	1090.9
2024-02-01	1240.8	1242.1	1168.1	1090.9
2024-01-01	1240.8	1242.1	1168.1	1090.9
2023-12-01	1240.8	1242.1	1168.1	1090.9
2023-11-01	1240.8	1242.1	1168.1	1090.9

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	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	4	Yes	Analysis
2	Cape Town Open Chess Festival 2025 (C)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	4	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	4	Yes	Analysis
2	Cape Town Open Chess Festival 2025 (C)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	4	2	Yes	Analysis
3	CT League 2024 (C)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	9	1.5	Yes	Analysis
4	WP Club League 2023 (C)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	5	2	Yes	Analysis
5	2020 Western Province Open (Prestige)	2020-03-07	2020-03-08	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
6	2019 Western Province League (C)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	5	1	Yes	Analysis
7	2019 Western Province League (E)	2019-07-27	2019-08-10	Standard	Cape Town (WCT)	9	2	2	Yes	Analysis
8	2019 Western Province Open (Open)	2019-05-25	2019-05-26	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
9	Steinitz Chess Festival 2019 (B)	2019-04-05	2019-04-07	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
10	2019 Cape Town Classic Chess Festival (Rapid)	2019-03-30	2019-03-30	Rapid	Cape Town (WCT)	7	6	2	Yes	Analysis
11	Jakes Gerwel Aurecon 2018 (C)	2018-10-13	2018-10-13	Rapid	Cape Town (WCT)	7	7	5.5	Yes	Analysis
12	2018 Western Province League (C)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	8	5	Yes	Analysis

#	Games	Start				End
1	7	Tournament Jakes Gerwel Aurecon 2018				Tournament 2019 Cape Town Classic Chess Festival
		date 2018-10-13	rnd 2	type Rapid	result 1	date 2019-03-30	rnd 1	type Rapid	result 1
		Opponent Allie, AD (Abdu Dayaan)				Opponent Rahim, T (Taha)
2	3	Tournament 2020 Western Province Open				Tournament 2020 Western Province Open
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 0.5
		Opponent Adonis, J (Jaydon)				Opponent Muller, EA (Euan A)
3	3	Tournament 2019 Western Province Open				Tournament 2019 Western Province League
		date 2019-05-26	rnd 6	type Standard	result 1	date 2019-07-27	rnd 3	type Standard	result 1
		Opponent Hlophe, M (Melissa)				Opponent Jali, H (Hlumelo)

#	Games	Start				End
1	3	Tournament 2020 Western Province Open				Tournament 2020 Western Province Open
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 0.5
		Opponent Adonis, J (Jaydon)				Opponent Muller, EA (Euan A)
2	3	Tournament 2019 Western Province Open				Tournament 2019 Western Province League
		date 2019-05-26	rnd 6	type Standard	result 1	date 2019-07-27	rnd 3	type Standard	result 1
		Opponent Hlophe, M (Melissa)				Opponent Jali, H (Hlumelo)
3	3	Tournament 2018 Western Province League				Tournament 2018 Western Province League
		date 2018-09-08	rnd 9	type Standard	result 1	date 2018-09-15	rnd 11	type Standard	result 0.5
		Opponent Botes, R (Renier)				Opponent Hendricks, A (Abduraghman)

#	Games	Start				End
1	7	Tournament Jakes Gerwel Aurecon 2018				Tournament 2019 Cape Town Classic Chess Festival
		date 2018-10-13	rnd 2	type Rapid	result 1	date 2019-03-30	rnd 1	type Rapid	result 1
		Opponent Allie, AD (Abdu Dayaan)				Opponent Rahim, T (Taha)
2	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 7	type Rapid	result 1
		Opponent Robinson, L (Luke)				Opponent Smith, Z (Zachary)
3	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 2	type Rapid	result 1	date 2025-07-19	rnd 3	type Rapid	result 1
		Opponent Du Preez, A (Anneke)				Opponent Gabier, Z (Zakariyya)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Jakes Gerwel Aurecon 2018				Tournament Jakes Gerwel Aurecon 2018
		date 2018-10-13	rnd 2	type Rapid	result 1	date 2018-10-13	rnd 5	type Rapid	result 1
		Opponent Allie, AD (Abdu Dayaan)				Opponent Bello, O (Oluwaseyi)
2	3	Tournament 2019 Western Province Open				Tournament 2019 Western Province League
		date 2019-05-26	rnd 6	type Standard	result 1	date 2019-07-27	rnd 3	type Standard	result 1
		Opponent Hlophe, M (Melissa)				Opponent Jali, H (Hlumelo)
3	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 7	type Rapid	result 1
		Opponent Robinson, L (Luke)				Opponent Smith, Z (Zachary)

#	Games	Start				End
1	3	Tournament 2019 Western Province Open				Tournament 2019 Western Province League
		date 2019-05-26	rnd 6	type Standard	result 1	date 2019-07-27	rnd 3	type Standard	result 1
		Opponent Hlophe, M (Melissa)				Opponent Jali, H (Hlumelo)
2	2	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-03-23	rnd 5	type Standard	result 1
		Opponent De Koker, H (Hope)				Opponent De La Rey, C (Callum)
3	2	Tournament 2020 Western Province Open				Tournament 2020 Western Province Open
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 2	type Standard	result 1
		Opponent Adonis, J (Jaydon)				Opponent Ntukela, A (Amzolele)

#	Games	Start				End
1	4	Tournament Jakes Gerwel Aurecon 2018				Tournament Jakes Gerwel Aurecon 2018
		date 2018-10-13	rnd 2	type Rapid	result 1	date 2018-10-13	rnd 5	type Rapid	result 1
		Opponent Allie, AD (Abdu Dayaan)				Opponent Bello, O (Oluwaseyi)
2	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 7	type Rapid	result 1
		Opponent Robinson, L (Luke)				Opponent Smith, Z (Zachary)
3	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 2	type Rapid	result 1	date 2025-07-19	rnd 3	type Rapid	result 1
		Opponent Du Preez, A (Anneke)				Opponent Gabier, Z (Zakariyya)

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	Ariefdien ,D (Dominique)	2	1	0	2	1	0	0	0	0	0	0	0
1	Ariefdien ,D (Dominique)	2	1214.8	1214.8	2	1217.4	1214.8	0	0	0	0	0	0
2	Muller ,EA (Euan A)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
2	Muller ,EA (Euan A)	2	1257.2	1044.7	2	1260.5	1044.7	0	0	0	0	0	0
3	Mackintosh ,M (Michaella)	2	1	0	2	1	0	0	0	0	0	0	0
3	Mackintosh ,M (Michaella)	2	1427.6	1427.6	2	1420.1	1427.6	0	0	0	0	0	0
4	Makhasi ,A (Athule)	2	1	0	2	1	0	0	0	0	0	0	0
4	Makhasi ,A (Athule)	2	1295.2	1295.2	2	1308.9	1295.2	0	0	0	0	0	0
5	Hlophe ,M (Melissa)	2	2	425	1	1	425	1	1	425	0	0	0
5	Hlophe ,M (Melissa)	2	1115.9	1540.9	1	1069.6	1540.9	1	1200	1540.9	0	0	0
6	Gcuze ,K (Khanya)	2	2	425	1	1	425	1	1	425	0	0	0
6	Gcuze ,K (Khanya)	2	1136.2	1561.2	1	1210.9	1561.2	1	1351.2	1561.2	0	0	0
7	Musakwa ,C (Courtney)	2	0	-425	1	0	-425	1	0	-425	0	0	0
7	Musakwa ,C (Courtney)	2	1359.9	934.9	1	1282.4	934.9	1	1320.3	934.9	0	0	0
8	Diedericks ,C (Caylah)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Diedericks ,C (Caylah)	1	1384.4	959.4	1	1387.9	959.4	0	0	0	0	0	0
9	Slamang ,MK (Mohammed Kassiem)	1	1	425	1	1	425	0	0	0	0	0	0
9	Slamang ,MK (Mohammed Kassiem)	1	1545.2	1970.2	1	1545.2	1970.2	0	0	0	0	0	0
10	Blows ,B (Bev)	1	1	425	1	1	425	0	0	0	0	0	0
10	Blows ,B (Bev)	1	881.6	1306.6	1	881.6	1306.6	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 Zyl, JM (Johannes Martin)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms