Chess South Africa Ratings Database

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Personal

Herder, J (Jovanne)

Chess SA id

104086077

FIDE id

Date of birth

2004-03-30 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1370.1	1349.4	1266.4	1007.8
Raw rating	1370.1	1349.4	1266.4	1007.8
Weighted rating	1362.5	1333.3	1144.2	1006.5
Weighted performance	1258	1132	1223.8	0
Floor	891.2	869.7	766.4	507.8
K-factor	36	36	36	40
Min/Max rating change allowed	130.1	134	150.8	218
Highest rating	1469.9 2024-09-01	1447.7 2024-09-01	1354.3 2023-07-01	1272.7 2024-02-01
Highest raw rating	1391.2 2025-02-01	1369.7 2025-02-01	1266.4 2025-08-01	1007.8 2024-03-01
Highest weighted rating	1362.5 2025-11-01	1333.3 2025-11-01	1102.4 2025-08-01	1007.8 2024-11-01
Highest weighted performance	1469.9 2024-09-01	1447.7 2024-09-01	1354.3 2023-07-01	1272.7 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1370.1	1349.4	1266.4	1007.8
Analysis
Rating	1370.1	1349.4	1266.4	1007.8
Raw rating	1370.1	1349.4	1266.4	1007.8
Weighted rating	1362.5	1333.3	1144.2
Weighted performance	1258	1132	1223.8
K-factor	36	36	36	40
Floor	891.2	869.7	766.4	507.8
Max/Min rating change allowed	130.1	134	150.8	218
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	1370.1	1349.4	1266.4	1007.8
New weighted rating	1364.3	1336.5	1156.5	1007.2
New weighted performance	1250.2	1124.3	1216	0
Temp new rating	1370.1	1349.4	1266.4	1007.8
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1370.1	1349.4	1266.4	1007.8
New K-factor	36	36	36	40
New floor	891.2	869.7	766.4	507.8

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	41	23	18	0
	16	9	0	7
	30	10	13	7
	14	14	0	0
	0	0	0	0
History	182	137	31	14

Games since
	Main 57	Standard 32		Rapid 18		Blitz 7
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2501		789		350
Male	2018		612		282
Adult	552		174		109
Adult Male	506		158		98
Standard
	RSA		Province		Region
Overall	2656		753		338
Male	2131		569		268
Adult	520		132		98
Adult Male	475		118		88
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	41	20.5	50	0	1376.1	1376.1
Standard	23	11.5	50	0	1351.4	1351.4
Rapid	18	9	50	0	1407.5	1407.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	165	82.5	50	0	1297.6	1297.6
Standard	120	62.5	52.08	17.7	1236.2	1254
Rapid	31	15.5	50	0	1414.8	1414.8
Blitz	14	4.5	32.14	-151.8	1564.2	1412.5

Date	Main	Standard	Rapid	Blitz
2025-11-01	1370.1	1349.4	1266.4	1007.8
2025-09-30	1383.4	1358.1	1266.4	1007.8
2025-09-01	1383.4	1358.1	1266.4	1007.8
2025-08-01	1383.4	1358.1	1266.4	1007.8
2025-07-01	1370	1358.1	1151.1	1007.8
2025-06-01	1370	1358.1	1151.1	1007.8
2025-05-01	1370	1358.1	1151.1	1007.8
2025-04-01	1373.4	1358.1	1069.8	1007.8
2025-03-01	1391.2	1369.7	1069.8	1007.8
2025-02-01	1391.2	1369.7	1069.8	1007.8
2025-01-01	1351.1	1309.7	1069.8	1007.8
2024-12-01	1351.1	1309.7	1069.8	1007.8
2024-11-01	1351.1	1309.7	1069.8	1007.8
2024-10-01	1351.1	1309.7	1069.8	1007.8
2024-09-01	1326.4	1276.9	1069.8	1007.8
2024-08-01	1326.4	1276.9	1069.8	1007.8
2024-07-01	1326.4	1276.9	1069.8	1007.8
2024-09-01	1308.4	1251.7	1069.8	1007.8
2024-05-01	1308.4	1251.7	1069.8	1007.8
2024-04-01	1308.4	1251.7	1069.8	1007.8
2024-03-01	1308.4	1251.7	1069.8	1007.8
2024-02-01	1305.2	1251.7	1069.8	943
2024-01-01	1305.2	1251.7	1069.8	943
2023-12-01	1305.2	1251.7	1069.8	943

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	Cape Town Chess Federation Club League 2025 (B)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	8	3.5	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	4	1.5	Yes	Analysis
3	Blackjacks Chess Club Rapid Championship 2025	2025-06-21	2025-06-21	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
4	Bellville Rapid 2025 (B)	2025-06-07	2025-06-07	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
5	Hermanus Chess Club Open 2025 (Intermediate)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	7	3	Yes	Analysis
6	Cape Town Open Chess Festival 2025 (C)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	2.5	Yes	Analysis
7	Western Cape Closed 2025 (C)	2025-03-08	2025-03-09	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (B)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	8	3.5	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	4	1.5	Yes	Analysis
3	Blackjacks Chess Club Rapid Championship 2025	2025-06-21	2025-06-21	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
4	Bellville Rapid 2025 (B)	2025-06-07	2025-06-07	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
5	Hermanus Chess Club Open 2025 (Intermediate)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	7	3	Yes	Analysis
6	Cape Town Open Chess Festival 2025 (C)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	2.5	Yes	Analysis
7	Western Cape Closed 2025 (C)	2025-03-08	2025-03-09	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
8	CT League 2024 (C)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	1	1	Yes	Analysis
9	CT League 2024 (D)	2024-08-03	2024-08-03	Standard	Cape Town (WCT)	6	3	2	Yes	Analysis
10	Cape Town Chess Federation Closed Chess Championships 2024 (D)	2024-06-15	2024-06-17	Standard	Cape Town (WCT)	6	5	3	Yes	Analysis
11	Steinitz Club Team Blitz Championship 2024	2024-02-15	2024-02-15	Blitz	Cape Town (WCT)	7	7	2	Yes	Analysis
12	Western Cape Closed Championship 2023 (D)	2023-09-24	2023-09-25	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
13	Western Cape Closed Championship 2023 (Blitz)	2023-09-23	2023-09-25	Blitz	Cape Town (WCT)	7	7	2.5	Yes	Analysis
14	Cape Town Junior Chess League Finals 2023 (U20A)	2023-09-16	2023-09-16	Rapid	Cape Town (WCT)	7	6	2.5	Yes	Analysis
15	WP Club League 2023 (B)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	4	2	Yes	Analysis
16	Cape Town Junior Chess League - Round 1 2023 (U20)	2023-07-22	2023-07-22	Rapid	Cape Town (WCT)	7	7	4	Yes	Analysis
17	Western Cape Club Championship 2022 (Tier 2)	2022-10-07	2022-10-09	Standard	Cape Town (WCT)	6	6	1	Yes	Analysis
18	2022 Western Province Club League (B)	2022-08-20	2022-10-01	Standard	Cape Town (WCT)	11	4	1	Yes	Analysis
19	2022 Western Province Club League (D)	2022-08-27	2022-10-01	Standard	Cape Town (WCT)	7	4	1.5	Yes	Analysis
20	Metro North Individual Trials 2020 (U17)	2020-02-07	2020-02-08	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
21	2019 Western Province League (C)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	1	0	Yes	Analysis
22	2019 Western Province League (E)	2019-07-27	2019-08-10	Standard	Cape Town (WCT)	9	8	4	Yes	Analysis
23	2019 Elsies River Open (Open)	2019-06-22	2019-06-23	Standard	Cape Town (WCT)	6	5	3	Yes	Analysis
24	2019 Western Province Open (Open)	2019-05-25	2019-05-26	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
25	Crossroads Open Chess Championship 2019 (C)	2019-04-27	2019-04-28	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
26	Metro School Chess Closed Individual Trials 2019 (U15 Boys)	2019-03-01	2019-03-02	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
27	District North Schools Chess Trials 2019 (U15)	2019-01-25	2019-01-26	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
28	2018 Western Province League (D)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	4	1	Yes	Analysis
29	2018 Western Province League (E)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	7	4	3	Yes	Analysis
30	Grassy Park Open 2018 (B)	2018-06-29	2018-07-01	Standard	Cape Town (WCT)	6	0	0	No	Analysis
31	Crossroads Open Chess Championship 2018 (C)	2018-04-27	2018-04-29	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
32	2018 Cape of Good Hope Open Chess Championships (C)	2018-01-26	2018-01-28	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament WP Club League 2023
		date 2023-07-22	rnd 4	type Rapid	result 1	date 2023-07-29	rnd 2	type Standard	result 1
		Opponent Coetzee, C (Chelsy)				Opponent Lintnaar, C (Conray)
2	6	Tournament Crossroads Open Chess Championship 2019				Tournament 2019 Western Province Open
		date 2019-04-28	rnd 4	type Standard	result 1	date 2019-05-25	rnd 3	type Standard	result 0.5
		Opponent Mbadu, S (Sihle)				Opponent Visagie, C (Cheslin)
3	5	Tournament Crossroads Open Chess Championship 2018				Tournament 2018 Western Province League
		date 2018-04-28	rnd 4	type Standard	result 1	date 2018-08-04	rnd 2	type Standard	result 1
		Opponent Peter, T (Thurlin)				Opponent Booysen, C (Conwill)

#	Games	Start				End
1	6	Tournament Crossroads Open Chess Championship 2019				Tournament 2019 Western Province Open
		date 2019-04-28	rnd 4	type Standard	result 1	date 2019-05-25	rnd 3	type Standard	result 0.5
		Opponent Mbadu, S (Sihle)				Opponent Visagie, C (Cheslin)
2	5	Tournament Western Cape Closed Championship 2023				Tournament Cape Town Chess Federation Closed Chess Championships 2024
		date 2023-09-24	rnd 3	type Standard	result 1	date 2024-06-15	rnd 2	type Standard	result 0.5
		Opponent Gcuze, K (Khanya)				Opponent Holtzhausen, R (Reinhard)
3	5	Tournament Crossroads Open Chess Championship 2018				Tournament 2018 Western Province League
		date 2018-04-28	rnd 4	type Standard	result 1	date 2018-08-04	rnd 2	type Standard	result 1
		Opponent Peter, T (Thurlin)				Opponent Booysen, C (Conwill)

#	Games	Start				End
1	4	Tournament Hermanus Chess Club Open 2025				Tournament Bellville Rapid 2025
		date 2025-04-12	rnd 7	type Rapid	result 0.5	date 2025-06-07	rnd 3	type Rapid	result 1
		Opponent Petersen, AR (Anito Roderick)				Opponent Kieser, M (Michael)
2	4	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament Cape Town Junior Chess League - Round 1 2023
		date 2023-07-22	rnd 4	type Rapid	result 1	date 2023-07-22	rnd 7	type Rapid	result 1
		Opponent Coetzee, C (Chelsy)				Opponent Matthee, C (Connor)
3	3	Tournament Cape Town Junior Chess League Finals 2023				Tournament Cape Town Junior Chess League Finals 2023
		date 2023-09-16	rnd 4	type Rapid	result 1	date 2023-09-16	rnd 6	type Rapid	result 0.5
		Opponent Ncube, S (Siyamthanda)				Opponent Blankenberg, T (Tazneen)

#	Games	Start				End
1	2	Tournament Steinitz Club Team Blitz Championship 2024				Tournament Steinitz Club Team Blitz Championship 2024
		date 2024-02-15	rnd 3	type Blitz	result 1	date 2024-02-15	rnd 4	type Blitz	result 1
		Opponent Osborne, H (Hannah)				Opponent Mabunda, Z (Zamani)
2	2	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-24	rnd 4	type Blitz	result 1	date 2023-09-25	rnd 5	type Blitz	result 0.5
		Opponent Solomon, I (Izaiah)				Opponent Grobbelaar, J (Jacqui)
3	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-23	rnd 2	type Blitz	result 1	date 2023-09-23	rnd 2	type Blitz	result 1
		Opponent Cunningham, L (Lezerick)				Opponent Cunningham, L (Lezerick)

#	Games	Start				End
1	6	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament WP Club League 2023
		date 2023-07-22	rnd 4	type Rapid	result 1	date 2023-07-29	rnd 2	type Standard	result 1
		Opponent Coetzee, C (Chelsy)				Opponent Lintnaar, C (Conray)
2	4	Tournament District North Schools Chess Trials 2019				Tournament District North Schools Chess Trials 2019
		date 2019-01-25	rnd 1	type Standard	result 1	date 2019-01-26	rnd 4	type Standard	result 1
		Opponent Mbimbi, K (Khethokuhle)				Opponent Ntoyanto, M (Mawande)
3	3	Tournament Bellville Rapid 2025				Tournament Bellville Rapid 2025
		date 2025-06-07	rnd 1	type Rapid	result 1	date 2025-06-07	rnd 3	type Rapid	result 1
		Opponent Steyn, M (Martin)				Opponent Kieser, M (Michael)

#	Games	Start				End
1	4	Tournament District North Schools Chess Trials 2019				Tournament District North Schools Chess Trials 2019
		date 2019-01-25	rnd 1	type Standard	result 1	date 2019-01-26	rnd 4	type Standard	result 1
		Opponent Mbimbi, K (Khethokuhle)				Opponent Ntoyanto, M (Mawande)
2	3	Tournament Western Cape Closed 2025				Tournament Western Cape Closed 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-09	rnd 4	type Standard	result 1
		Opponent Simango, S (Selso)				Opponent Green, L (Lyndon)
3	3	Tournament Cape Town Chess Federation Closed Chess Championships 2024				Tournament CT League 2024
		date 2024-06-17	rnd 5	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Musakwa, C (Courtney)				Opponent Chigada, P (Prince)

#	Games	Start				End
1	4	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament Cape Town Junior Chess League - Round 1 2023
		date 2023-07-22	rnd 4	type Rapid	result 1	date 2023-07-22	rnd 7	type Rapid	result 1
		Opponent Coetzee, C (Chelsy)				Opponent Matthee, C (Connor)
2	3	Tournament Bellville Rapid 2025				Tournament Bellville Rapid 2025
		date 2025-06-07	rnd 1	type Rapid	result 1	date 2025-06-07	rnd 3	type Rapid	result 1
		Opponent Steyn, M (Martin)				Opponent Kieser, M (Michael)
3	2	Tournament Blackjacks Chess Club Rapid Championship 2025				Tournament Blackjacks Chess Club Rapid Championship 2025
		date 2025-06-21	rnd 5	type Rapid	result 1	date 2025-06-21	rnd 6	type Rapid	result 1
		Opponent Fillies, K (Keshe)				Opponent Williams, N (Naydene)

#	Games	Start				End
1	2	Tournament Steinitz Club Team Blitz Championship 2024				Tournament Steinitz Club Team Blitz Championship 2024
		date 2024-02-15	rnd 3	type Blitz	result 1	date 2024-02-15	rnd 4	type Blitz	result 1
		Opponent Osborne, H (Hannah)				Opponent Mabunda, Z (Zamani)
2	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-24	rnd 4	type Blitz	result 1	date 2023-09-24	rnd 4	type Blitz	result 1
		Opponent Solomon, I (Izaiah)				Opponent Solomon, I (Izaiah)
3	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-23	rnd 2	type Blitz	result 1	date 2023-09-23	rnd 2	type Blitz	result 1
		Opponent Cunningham, L (Lezerick)				Opponent Cunningham, L (Lezerick)

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	Ncethelo ,B (Bongolethu)	3	0	-425	1	0	-425	1	0	-425	1	0	-425
1	Ncethelo ,B (Bongolethu)	3	1606.7	1181.7	1	1349.3	1181.7	1	1616.5	1181.7	1	1443.4	1181.7
2	Mente ,L (Limi)	2	2	425	2	2	425	0	0	0	0	0	0
2	Mente ,L (Limi)	2	1283.1	1708.1	2	1302.3	1708.1	0	0	0	0	0	0
3	Adams ,K (Keenan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	Adams ,K (Keenan)	2	624.7	412.2	2	634	412.2	0	0	0	0	0	0
4	Waguta ,B (Brooklyn)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
4	Waguta ,B (Brooklyn)	2	1196	1408.5	2	1192.6	1408.5	0	0	0	0	0	0
5	Mcmanus ,D (Dale)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Mcmanus ,D (Dale)	2	1534.2	1109.2	2	1535.6	1109.2	0	0	0	0	0	0
6	Osborne ,R (Ryan Eugene)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Osborne ,R (Ryan Eugene)	2	1299.9	874.9	2	1287.1	874.9	0	0	0	0	0	0
7	Petersen ,AR (Anito Roderick)	2	1.5	212.5	1	1	425	1	0.5	0	0	0	0
7	Petersen ,AR (Anito Roderick)	2	1317.6	1530.1	1	1315.3	1742.6	1	1375.2	1317.6	0	0	0
8	Visagie ,C (Cheslin)	2	0.5	-212.5	1	0.5	0	0	0	0	1	0	-425
8	Visagie ,C (Cheslin)	2	1153.5	941	1	1143.2	1153.5	0	0	0	1	1108.4	728.5
9	Palmer ,ZE (Zante)	2	0	-425	1	0	-425	0	0	0	1	0	-425
9	Palmer ,ZE (Zante)	2	1337.3	912.3	1	1227.2	912.3	0	0	0	1	1150.4	912.3
10	Lielieveld ,F (Franco)	2	0	-425	0	0	0	2	0	-425	0	0	0
10	Lielieveld ,F (Franco)	2	1747.3	1322.3	0	0	0	2	1491.5	1322.3	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Herder, J (Jovanne)

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Last 24 raw ratings

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Top 3 Streaks

Top 10 opponents most often played

Norms