Chess South Africa Ratings Database

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Personal

Willenberg, I (Ivan)

Chess SA id

172042914

FIDE id

Date of birth

1972-06-22 (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	1378.8	1382.5	1432.9	1462
Raw rating	1378.8	1382.5	1432.9	1462
Weighted rating	1362.8	1369.4	1427.9	1462
Weighted performance	479.4	0	0	0
Floor	975.7	960.8	994.1	962
K-factor	32	32	32	32
Min/Max rating change allowed	128.5	127.9	119	114.2
Highest rating	1515 2018-06-01	1460.8 2018-08-01	1601.3 2018-06-01	1462 2024-02-01
Highest raw rating	1475.7 2018-07-01	1460.8 2018-01-01	1494.1 2018-07-01	1462 2024-02-01
Highest weighted rating	1475.7 2018-09-01	1460.8 2018-08-01	1494.1 2019-06-01	1462 2025-08-01
Highest weighted performance	1515 2018-06-01	1397.5 2019-04-01	1601.3 2018-06-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1378.8	1382.5	1432.9	1462
Analysis
Rating	1378.8	1382.5	1432.9	1462
Raw rating	1378.8	1382.5	1432.9	1462
Weighted rating	1362.8	1369.4	1427.9
Weighted performance	479.4	0	0
K-factor	32	32	32	32
Floor	975.7	960.8	994.1	962
Max/Min rating change allowed	128.5	127.9	119	114.2
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	1378.8	1382.5	1432.9	1462
New weighted rating	1363.8	1370.4	1427.8	1462
New weighted performance	477.9	0	0	0
Temp new rating	1378.8	1382.5	1432.9	1462
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1378.8	1382.5	1432.9	1462
New K-factor	32	32	32	32
New floor	975.7	960.8	994.1	962

Item	Main	Standard	Rapid
	0	0	0
	2	2	0
	9	5	4
	5	5	0
	9	9	0
	0	0	0
History	149	123	26

Games since
	Main 11	Standard 7		Rapid 4		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	2	1	50	0	1573	1573
Standard	2	1	50	0	1573	1573
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	78	39.5	50.64	5.4	1367	1372.5
Standard	58	28.5	49.14	-7.3	1364.4	1357
Rapid	20	11	55	42.5	1374.9	1417.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1378.8	1382.5	1432.9	1462
2025-09-30	1363.8	1369	1432.9	1462
2025-09-01	1363.8	1369	1432.9	1462
2025-08-01	1363.8	1369	1432.9	1462
2025-07-01	1363.8	1369	1432.9	1462
2025-06-01	1363.8	1369	1432.9	1462
2025-05-01	1363.8	1369	1432.9	1462
2025-04-01	1363.8	1369	1432.9	1462
2025-03-01	1363.8	1368.9	1432.9	1462
2025-02-01	1362.8	1367.9	1432	1462
2025-01-01	1345.8	1356.4	1405.4	1462
2024-12-01	1345.8	1356.4	1405.4	1462
2024-11-01	1345.8	1356.4	1405.4	1462
2024-10-01	1345.8	1356.4	1405.4	1462
2024-09-01	1358.6	1377.2	1405.4	1462
2024-08-01	1358.6	1377.2	1405.4	1462
2024-07-01	1358.6	1377.2	1405.4	1462
2024-09-01	1358.6	1377.2	1405.4	1462
2024-05-01	1384.6	1377.2	1472	1462
2024-04-01	1384.6	1377.2	1472	1462
2024-03-01	1384.6	1377.2	1472	1462
2024-02-01	1384.6	1377.2	1472	1462
2024-01-01	1384.6	1377.2	1472	1462
2023-12-01	1384.6	1377.2	1472	1460.8

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 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	2	1	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	0	0	No	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 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	2	1	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	0	0	No	Analysis
3	CT League 2024 (C)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	2	0.5	Yes	Analysis
4	CT League 2024 (D)	2024-08-03	2024-08-03	Standard	Cape Town (WCT)	6	3	2	Yes	Analysis
5	Steinitz Chess Festival 2024 (Open Rapid)	2024-05-11	2024-05-11	Rapid	Cape Town (WCT)	6	4	1	Yes	Analysis
6	WP Club League 2023 (D PlayOffs)	2023-09-02	2023-09-09	Standard	Cape Town (WCT)	5	3	2.5	Yes	Analysis
7	WP Club League 2023 (D2)	2023-08-05	2023-08-26	Standard	Cape Town (WCT)	6	2	1	Yes	Analysis
8	2022 Western Province Club League (D)	2022-08-27	2022-10-01	Standard	Cape Town (WCT)	7	4	2	Yes	Analysis
9	Steinitz Open 2022 (C)	2022-05-21	2022-05-22	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
10	2019 Western Province League (C)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	8	1.5	Yes	Analysis
11	Condorgreen Mitchell`s Plain Chess Open Tournament 2019	2019-06-01	2019-06-02	Rapid	Cape Town (WCT)	9	9	5.5	Yes	Analysis
12	2019 Elsies River Open (Open)	2019-06-22	2019-06-23	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
13	Steinitz Chess Festival 2019 (B)	2019-04-05	2019-04-07	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
14	Crossroads Open Chess Championship 2019 (C)	2019-04-27	2019-04-28	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
15	2018 Western Province League (B)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	4	1	Yes	Analysis
16	2018 Western Province League (B)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	7	0.5	Yes	Analysis
17	Eldo Smart Memorial Rapid Tournament 2018	2018-06-16	2018-06-16	Rapid	Cape Town (WCT)	7	7	4.5	Yes	Analysis

#	Games	Start				End
1	11	Tournament Steinitz Chess Festival 2019				Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019
		date 2019-04-06	rnd 3	type Standard	result 1	date 2019-06-01	rnd 1	type Rapid	result 1
		Opponent Shapiro, M (Matthew)				Opponent Zass, Q (Quinton)
2	6	Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019				Tournament 2019 Elsies River Open
		date 2019-06-02	rnd 8	type Rapid	result 1	date 2019-06-23	rnd 4	type Standard	result 1
		Opponent Martheze, Z (Zafirah)				Opponent Olkers, D (Declan)
3	3	Tournament WP Club League 2023				Tournament WP Club League 2023
		date 2023-09-02	rnd 1	type Standard	result 1	date 2023-09-02	rnd 3	type Standard	result 0.5
		Opponent De Jager, L (Leon)				Opponent Dawood, S (Saleem)

#	Games	Start				End
1	14	Tournament Steinitz Chess Festival 2019				Tournament 2019 Elsies River Open
		date 2019-04-06	rnd 3	type Standard	result 1	date 2019-06-23	rnd 4	type Standard	result 1
		Opponent Shapiro, M (Matthew)				Opponent Olkers, D (Declan)
2	4	Tournament WP Club League 2023				Tournament CT League 2024
		date 2023-09-02	rnd 1	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent De Jager, L (Leon)				Opponent Evans, J (Justin)
3	3	Tournament Steinitz Open 2022				Tournament 2022 Western Province Club League
		date 2022-05-21	rnd 4	type Standard	result 1	date 2022-08-27	rnd 1	type Standard	result 1
		Opponent Brink, W (Wihan)				Opponent Fani, Z (Zimi)

#	Games	Start				End
1	4	Tournament Eldo Smart Memorial Rapid Tournament 2018				Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019
		date 2018-06-16	rnd 5	type Rapid	result 1	date 2019-06-01	rnd 1	type Rapid	result 1
		Opponent Maxwell, CP (Christian)				Opponent Zass, Q (Quinton)
2	2	Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019				Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019
		date 2019-06-02	rnd 8	type Rapid	result 1	date 2019-06-02	rnd 9	type Rapid	result 1
		Opponent Martheze, Z (Zafirah)				Opponent Salimu, C (Chase)
3	2	Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019				Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019
		date 2019-06-01	rnd 3	type Rapid	result 1	date 2019-06-01	rnd 4	type Rapid	result 1
		Opponent Adams, K (Kyron)				Opponent Adams, K (Kyle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019				Tournament 2019 Elsies River Open
		date 2019-06-02	rnd 8	type Rapid	result 1	date 2019-06-23	rnd 4	type Standard	result 1
		Opponent Martheze, Z (Zafirah)				Opponent Olkers, D (Declan)
2	4	Tournament Steinitz Chess Festival 2019				Tournament Crossroads Open Chess Championship 2019
		date 2019-04-07	rnd 5	type Standard	result 1	date 2019-04-27	rnd 2	type Standard	result 1
		Opponent Ariefdien, D (Dominique)				Opponent Gcuze, K (Khanya)
3	3	Tournament Steinitz Open 2022				Tournament 2022 Western Province Club League
		date 2022-05-21	rnd 4	type Standard	result 1	date 2022-08-27	rnd 1	type Standard	result 1
		Opponent Brink, W (Wihan)				Opponent Fani, Z (Zimi)

#	Games	Start				End
1	6	Tournament Crossroads Open Chess Championship 2019				Tournament 2019 Elsies River Open
		date 2019-04-28	rnd 5	type Standard	result 1	date 2019-06-23	rnd 4	type Standard	result 1
		Opponent Nonco, L (Lwazi)				Opponent Olkers, D (Declan)
2	4	Tournament Steinitz Chess Festival 2019				Tournament Crossroads Open Chess Championship 2019
		date 2019-04-07	rnd 5	type Standard	result 1	date 2019-04-27	rnd 2	type Standard	result 1
		Opponent Ariefdien, D (Dominique)				Opponent Gcuze, K (Khanya)
3	3	Tournament Steinitz Open 2022				Tournament 2022 Western Province Club League
		date 2022-05-21	rnd 4	type Standard	result 1	date 2022-08-27	rnd 1	type Standard	result 1
		Opponent Brink, W (Wihan)				Opponent Fani, Z (Zimi)

#	Games	Start				End
1	2	Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019				Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019
		date 2019-06-02	rnd 8	type Rapid	result 1	date 2019-06-02	rnd 9	type Rapid	result 1
		Opponent Martheze, Z (Zafirah)				Opponent Salimu, C (Chase)
2	2	Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019				Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019
		date 2019-06-01	rnd 3	type Rapid	result 1	date 2019-06-01	rnd 4	type Rapid	result 1
		Opponent Adams, K (Kyron)				Opponent Adams, K (Kyle)
3	2	Tournament Eldo Smart Memorial Rapid Tournament 2018				Tournament Condorgreen Mitchell`s Plain Chess Open Tournament 2019
		date 2018-06-16	rnd 7	type Rapid	result 1	date 2019-06-01	rnd 1	type Rapid	result 1
		Opponent Willenberg, GI (Glen)				Opponent Zass, Q (Quinton)

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	Nonco ,L (Lwazi)	2	2	425	2	2	425	0	0	0	0	0	0
1	Nonco ,L (Lwazi)	2	1524.3	1949.3	2	1524.3	1949.3	0	0	0	0	0	0
2	Ariefdien ,D (Dominique)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
2	Ariefdien ,D (Dominique)	2	1218.7	1431.2	2	1218.4	1431.2	0	0	0	0	0	0
3	Osborne ,H (Hannah)	2	2	425	1	1	425	1	1	425	0	0	0
3	Osborne ,H (Hannah)	2	1227.9	1652.9	1	1250.6	1652.9	1	1160	1652.9	0	0	0
4	Salimu ,C (Chase)	2	2	425	1	1	425	1	1	425	0	0	0
4	Salimu ,C (Chase)	2	1318.3	1743.3	1	1297.6	1743.3	1	1236.1	1743.3	0	0	0
5	Willenberg ,GI (Glen Ivan)	2	1	0	1	0	-425	1	1	425	0	0	0
5	Willenberg ,GI (Glen Ivan)	2	1757.2	1757.2	1	1763.8	1332.2	1	1784.2	2182.2	0	0	0
6	Dawood ,S (Saleem Mohamed)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Dawood ,S (Saleem Mohamed)	1	1303.5	1303.5	1	1308.6	1303.5	0	0	0	0	0	0
7	Kamalie ,W (Warieth)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Kamalie ,W (Warieth)	1	1342.9	917.9	1	1342.4	917.9	0	0	0	0	0	0
8	Mairosi ,C (Cosmas)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Mairosi ,C (Cosmas)	1	1394.7	969.7	1	1387.1	969.7	0	0	0	0	0	0
9	Allie ,I (Ishmaeel)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Allie ,I (Ishmaeel)	1	1277.2	1277.2	1	1280.4	1277.2	0	0	0	0	0	0
10	Adams ,W (Waseem)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Adams ,W (Waseem)	1	1200	775	1	1200	775	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Willenberg, I (Ivan)

Ratings

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Last 24 raw ratings

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Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms