Chess South Africa Ratings Database

PLAYER PAGE

Personal

Liebenberg, I (Irwin)

Chess SA id

1070308392

FIDE id

Date of birth

2007-02-02 (U20)

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	1247	1200	1275.7	1200
Raw rating	1247	1200	1275.7	1200
Weighted rating	1228.2	1200	1247.1	1200
Weighted performance	0	0	0	0
Floor	747	700	775.7	700
K-factor	36	36	36	36
Min/Max rating change allowed	155.1	165.8	148.9	165.8
Highest rating	1281.8 2024-08-01	1200 2024-08-01	1354.8 2024-08-01	1200 2024-08-01
Highest raw rating	1247 2025-08-01	1200 2024-08-01	1275.7 2025-08-01	1200 2024-08-01
Highest weighted rating	1225.7 2024-10-01	1200 2024-08-01	1244.4 2024-10-01	1200 2024-08-01
Highest weighted performance	1281.8 2024-08-01	1200 2024-08-01	1354.8 2024-08-01	1200 2024-08-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1247	1200	1275.7	1200
Analysis
Rating	1247	1200	1275.7	1200
Raw rating	1247	1200	1275.7	1200
Weighted rating	1228.2	1200	1247.1
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	747	700	775.7	700
Max/Min rating change allowed	155.1	165.8	148.9	165.8
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	1247	1200	1275.7	1200
New weighted rating	1230.4	1200	1250.5	1200
New weighted performance	0	0	0	0
Temp new rating	1247	1200	1275.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1247	1200	1275.7	1200
New K-factor	36	36	36	36
New floor	747	700	775.7	700

Item	Main	Rapid
	0	0
	7	7
	6	6
	0	0
	0	0
	0	0
History	13	13

Games since
	Main 13	Standard 0		Rapid 13		Blitz 0
Gender	Male
Age group	U20
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	7	3.5	50	0	1374.2	1374.2
Standard	0	0	0	0	0	0
Rapid	7	3.5	50	0	1374.2	1374.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	13	7.5	57.69	65.4	1298.4	1363.8
Standard	0	0	0	0	0	0
Rapid	13	7.5	57.69	65.4	1298.4	1363.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1247	1200	1275.7	1200
2025-09-30	1247	1200	1275.7	1200
2025-09-01	1247	1200	1275.7	1200
2025-08-01	1247	1200	1275.7	1200
2025-07-01	1225.7	1200	1244.4	1200
2025-06-01	1225.7	1200	1244.4	1200
2025-05-01	1225.7	1200	1244.4	1200
2025-04-01	1225.7	1200	1244.4	1200
2025-03-01	1225.7	1200	1244.4	1200
2025-02-01	1225.7	1200	1244.4	1200
2025-01-01	1225.7	1200	1244.4	1200
2024-12-01	1225.7	1200	1244.4	1200
2024-11-01	1225.7	1200	1244.4	1200
2024-10-01	1225.7	1200	1244.4	1200
2024-09-01	1225.7	1200	1244.4	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
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	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	3.5	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	3.5	Yes	Analysis
2	Westerford Chess Challenger 2024 (U18)	2024-07-27	2024-07-27	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis

#	Games	Start				End
1	3	Tournament Westerford Chess Challenger 2024				Tournament Westerford Chess Challenger 2024
		date 2024-07-27	rnd 2	type Rapid	result 1	date 2024-07-27	rnd 4	type Rapid	result 1
		Opponent Francis, B (Blake)				Opponent Kalombo, E (Edo Tshimanga)
2	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 5	type Rapid	result 0.5	date 2025-07-19	rnd 6	type Rapid	result 1
		Opponent Waldeck, A (Aaron)				Opponent Blom, C (Carl)
3	2	Tournament Westerford Chess Challenger 2024				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2024-07-27	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 1	type Rapid	result 1
		Opponent Kayter, K (Kyle)				Opponent Webber, CPS (Colin Peter Slade)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Westerford Chess Challenger 2024				Tournament Westerford Chess Challenger 2024
		date 2024-07-27	rnd 2	type Rapid	result 1	date 2024-07-27	rnd 4	type Rapid	result 1
		Opponent Francis, B (Blake)				Opponent Kalombo, E (Edo Tshimanga)
2	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 5	type Rapid	result 0.5	date 2025-07-19	rnd 6	type Rapid	result 1
		Opponent Waldeck, A (Aaron)				Opponent Blom, C (Carl)
3	2	Tournament Westerford Chess Challenger 2024				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2024-07-27	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 1	type Rapid	result 1
		Opponent Kayter, K (Kyle)				Opponent Webber, CPS (Colin Peter Slade)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Westerford Chess Challenger 2024				Tournament Westerford Chess Challenger 2024
		date 2024-07-27	rnd 2	type Rapid	result 1	date 2024-07-27	rnd 4	type Rapid	result 1
		Opponent Francis, B (Blake)				Opponent Kalombo, E (Edo Tshimanga)
2	2	Tournament Westerford Chess Challenger 2024				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2024-07-27	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 1	type Rapid	result 1
		Opponent Kayter, K (Kyle)				Opponent Webber, CPS (Colin Peter Slade)
3	1	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 6	type Rapid	result 1
		Opponent Blom, C (Carl)				Opponent Blom, C (Carl)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Westerford Chess Challenger 2024				Tournament Westerford Chess Challenger 2024
		date 2024-07-27	rnd 2	type Rapid	result 1	date 2024-07-27	rnd 4	type Rapid	result 1
		Opponent Francis, B (Blake)				Opponent Kalombo, E (Edo Tshimanga)
2	2	Tournament Westerford Chess Challenger 2024				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2024-07-27	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 1	type Rapid	result 1
		Opponent Kayter, K (Kyle)				Opponent Webber, CPS (Colin Peter Slade)
3	1	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 6	type Rapid	result 1
		Opponent Blom, C (Carl)				Opponent Blom, C (Carl)

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	Ziegers ,CN (Chad Neil)	1	0	-425	0	0	0	1	0	-425	0	0	0
1	Ziegers ,CN (Chad Neil)	1	1378.4	953.4	0	0	0	1	1323.7	953.4	0	0	0
2	Saki ,M (Membathisi Khwezi)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Saki ,M (Membathisi Khwezi)	1	1200	775	0	0	0	1	1200	775	0	0	0
3	Mizen ,D (Daniel)	1	0	-425	0	0	0	1	0	-425	0	0	0
3	Mizen ,D (Daniel)	1	1399.2	974.2	0	0	0	1	1338.8	974.2	0	0	0
4	Braaf ,J (Jordan)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Braaf ,J (Jordan)	1	1434.1	1009.1	0	0	0	1	1389.5	1009.1	0	0	0
5	Muhiya ,P (Paul)	1	1	425	0	0	0	1	1	425	0	0	0
5	Muhiya ,P (Paul)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
6	Waldeck ,A (Aaron)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
6	Waldeck ,A (Aaron)	1	1346.1	1346.1	0	0	0	1	1418.2	1346.1	0	0	0
7	Kalombo ,E (Edo Tshimanga)	1	1	425	0	0	0	1	1	425	0	0	0
7	Kalombo ,E (Edo Tshimanga)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
8	Erasmus ,D (Daniel)	1	1	425	0	0	0	1	1	425	0	0	0
8	Erasmus ,D (Daniel)	1	1442.3	1867.3	0	0	0	1	1278.7	1867.3	0	0	0
9	Kayter ,K (Kyle)	1	1	425	0	0	0	1	1	425	0	0	0
9	Kayter ,K (Kyle)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Webber ,CPS (Colin Peter Slade)	1	1	425	0	0	0	1	1	425	0	0	0
10	Webber ,CPS (Colin Peter Slade)	1	1385.2	1810.2	0	0	0	1	1420.7	1810.2	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Liebenberg, I (Irwin)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms