Chess South Africa Ratings Database

PLAYER PAGE

Personal

Klaver, C (Cornelis)

Chess SA id

181015759

FIDE id

Date of birth

1981-10-07 (Adult)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

NM,FI

Chess SA registered

Last active game

2025-04-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	2043.9	2095	2046.7	1909
Raw rating	2043.9	2094.6	2046.7	1909
Weighted rating	2043.4	2095	2044.7	1907.7
Weighted performance	1535	1268.1	0	1361.1
Floor	1579.9	1603	1581.3	1576.4
K-factor	20	20	20	20
Min/Max rating change allowed	49.8	46.4	49.6	60.4
Highest rating	2079.9 2024-02-01	2103 2024-02-01	2081.3 2024-02-01	2076.4 2018-09-01
Highest raw rating	2079.9 2024-02-01	2103 2024-02-01	2081.3 2024-02-01	2076.4 2018-02-01
Highest weighted rating	2079.9 2018-02-01	2094.6 2025-08-01	2081.3 2018-02-01	2076.4 2018-09-01
Highest weighted performance	1860.8 2019-08-01	1915.8 2019-08-01	1893.2 2018-05-01	1741.2 2019-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	2043.9	2095	2046.7	1909
Analysis
Rating	2043.9	2095	2046.7	1909
Raw rating	2043.9	2094.6	2046.7	1909
Weighted rating	2043.4	2095	2044.7
Weighted performance	1535	1268.1	0
K-factor	20	20	20	20
Floor	1579.9	1603	1581.3	1576.4
Max/Min rating change allowed	49.8	46.4	49.6	60.4
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	2043.9	2094.6	2046.7	1909
New weighted rating	2043.2	2095	2044.6	1907.5
New weighted performance	1534.4	1267.4	0	1360.5
Temp new rating	2043.9	2095	2046.7	1909
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	2043.9	2095	2046.7	1909
New K-factor	20	20	20	20
New floor	1579.9	1603	1581.3	1576.4

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	7	0	0	7
	21	5	7	9
	7	7	0	0
	37	7	0	30
	0	0	0	0
History	595	399	59	137

Games since
	Main 28	Standard 5		Rapid 7		Blitz 16
Gender	Male
Age group	Adult
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
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	33		14		6
Male	33		14		6
Adult	29		13		6
Adult Male	29		13		6


	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	5	71.43	182.1	1811.9	1994
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	7	5	71.43	182.1	1811.9	1994
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	128	75	58.59	73	1813.2	1886.2
Standard	49	29.5	60.2	86.7	1887	1973.7
Rapid	23	12.5	54.35	37	1795.5	1832.5
Blitz	56	33	58.93	75.9	1755.8	1831.7

Date	Main	Standard	Rapid	Blitz
2025-09-30	2043.9	2094.6	2046.7	1909
2025-09-01	2043.9	2094.6	2046.7	1909
2025-08-01	2043.9	2094.6	2046.7	1909
2025-07-01	2043.9	2094.3	2046.7	1909
2025-06-01	2043.9	2093.9	2046.7	1909
2025-05-01	2044.1	2093.4	2046.7	1911.1
2025-04-01	2044.1	2092.9	2046.7	1911.1
2025-03-01	2044.1	2092.3	2046.7	1911.1
2025-02-01	2043.2	2091.4	2046.2	1910.9
2025-01-01	2031.8	2088.4	2034.1	1900.2
2024-12-01	2031.8	2088.4	2034.1	1900.2
2024-11-01	2031.8	2088.4	2034.1	1900.2
2024-10-01	2040.1	2103	2034.1	1900.2
2024-09-01	2040.1	2103	2034.1	1900.2
2024-08-01	2040.1	2103	2034.1	1900.2
2024-07-01	2040.1	2103	2034.1	1900.2
2024-06-01	2040.1	2103	2034.1	1900.2
2024-08-01	2040.1	2103	2034.1	1900.2
2024-04-01	2069.4	2103	2081.3	1900.2
2024-03-01	2079.9	2103	2081.3	1935.6
2024-02-01	2079.9	2103	2081.3	1935.6
2024-01-01	2079.9	2103	2081.3	1935.6
2023-12-01	2037.5	2064	2057.4	1935.6
2023-11-01	2037.5	2064	2057.4	1935.6

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	Moja Chess Extravaganza 2025 (Blitz)	2025-04-26	2025-04-26	Blitz	Johannesburg Metro (GJM)	7	7	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Moja Chess Extravaganza 2025 (Blitz)	2025-04-26	2025-04-26	Blitz	Johannesburg Metro (GJM)	7	7	5	Yes	Analysis
2	2024 Tshwane Chess Club Clash (Prestige)	2024-10-12	2024-10-12	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	Hermanus Chess Club Open 2024 (Championship)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	7	2	Yes	Analysis
4	Wanderers Blitz Tournament 2024	2024-03-23	2024-03-23	Blitz	Johannesburg Metro (GJM)	9	9	5	Yes	Analysis
5	2023 KZN Open (A)	2023-04-29	2023-04-30	Standard	Ethekwini (KED)	7	7	6.5	Yes	Analysis
6	FNB Chessheroes Anity Bullying 2022 (Blitz)	2022-11-05	2022-11-05	Blitz	Johannesburg Metro (GJM)	7	7	3.5	Yes	Analysis
7	Chessheroes Bowls Club Zoo Lake Challenge 2022	2022-07-02	2022-07-02	Blitz	Johannesburg Metro (GJM)	7	7	4.5	Yes	Analysis
8	Rachella`s Cafe Blitz Tournament 1 2022	2022-03-20	2022-03-20	Blitz	Tshwane (GTP)	9	9	6	Yes	Analysis
9	Chessheroes Choo Choo Challenge 2022	2022-01-08	2022-01-08	Blitz	Tshwane (GTP)	7	7	4	Yes	Analysis
10	Chessheroes Superhero Challenge 2022	2022-01-04	2022-01-07	Standard	Johannesburg Metro (GJM)	7	7	5	Yes	Analysis
11	Chess Heroes Open Rapid Challenge 2020	2020-02-01	2020-02-01	Rapid	Johannesburg Metro (GJM)	6	6	5	Yes	Analysis
12	2019 Inter Region Chess Championships	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	5	4	Yes	Analysis
13	Vienna Chess Open 2019	2019-08-17	2019-08-24	Standard	aUSTRIA (AUT)	9	9	3	Yes	Analysis
14	Ehlanzeni Open 2019 (A)	2019-07-19	2019-07-21	Standard	Ehlanzeni (MEN)	6	6	4	Yes	Analysis
15	2019 SWVG Arnold Classic (Blitz Prestige)	2019-05-19	2019-05-19	Blitz	Tshwane (GTP)	10	10	5	Yes	Analysis
16	2019 Boardwalk Pearson Open (Invitational)	2019-03-29	2019-03-31	Standard	Nelson Mandela Bay (ENM)	5	5	1.5	Yes	Analysis
17	SWVG Arnold Classic Rapid & Blitz 2018 (Rapid Prestige)	2018-05-19	2018-05-20	Rapid	Tshwane (GTP)	10	10	5.5	Yes	Analysis
18	2018 Boardwalk Pearson Open (A)	2018-03-16	2018-03-18	Standard	Nelson Mandela Bay (ENM)	6	5	2.5	Yes	Analysis

#	Games	Start				End
1	22	Tournament Vienna Chess Open 2019				Tournament Chessheroes Choo Choo Challenge 2022
		date 2019-08-24	rnd 9	type Standard	result 0.5	date 2022-01-08	rnd 3	type Blitz	result 1
		Opponent Segura Del Frago Imanol				Opponent Selepe, LN (Lwazi)
2	9	Tournament 2023 KZN Open				Tournament Wanderers Blitz Tournament 2024
		date 2023-04-29	rnd 1	type Standard	result 1	date 2024-03-23	rnd 2	type Blitz	result 1
		Opponent Ximba, S (Siphesihle)				Opponent Maponya, K (Khutso)
3	8	Tournament 2024 Tshwane Chess Club Clash				Tournament Moja Chess Extravaganza 2025
		date 2024-10-12	rnd 4	type Standard	result 1	date 2025-04-26	rnd 6	type Blitz	result 0.5
		Opponent Molobi, G (Gomolemo)				Opponent Meise, K (Keagen)

#	Games	Start				End
1	21	Tournament Vienna Chess Open 2019				Tournament 2024 Tshwane Chess Club Clash
		date 2019-08-24	rnd 9	type Standard	result 0.5	date 2024-10-12	rnd 1	type Standard	result 1
		Opponent Segura Del Frago Imanol				Opponent Khoza, A (Andani)
2	8	Tournament 2019 Boardwalk Pearson Open				Tournament Ehlanzeni Open 2019
		date 2019-03-30	rnd 3	type Standard	result 0.5	date 2019-07-21	rnd 5	type Standard	result 1
		Opponent Beukes, DM (Dante)				Opponent Makhosonke, KM (Kuhlase)
3	4	Tournament Vienna Chess Open 2019				Tournament Vienna Chess Open 2019
		date 2019-08-17	rnd 1	type Standard	result 0.5	date 2019-08-19	rnd 4	type Standard	result 0.5
		Opponent Matt Fabian				Opponent Batyte Daiva

#	Games	Start				End
1	9	Tournament SWVG Arnold Classic Rapid & Blitz 2018				Tournament Hermanus Chess Club Open 2024
		date 2018-05-20	rnd 9	type Rapid	result 0.5	date 2024-04-20	rnd 1	type Rapid	result 1
		Opponent De Abreu, RN (Roberto)				Opponent Bouah, D (Denise)
2	4	Tournament SWVG Arnold Classic Rapid & Blitz 2018				Tournament SWVG Arnold Classic Rapid & Blitz 2018
		date 2018-05-19	rnd 1	type Rapid	result 0.5	date 2018-05-19	rnd 4	type Rapid	result 0.5
		Opponent Mendelsohn, DC (David)				Opponent Goosen, A (Anton)
3	2	Tournament SWVG Arnold Classic Rapid & Blitz 2018				Tournament SWVG Arnold Classic Rapid & Blitz 2018
		date 2018-05-19	rnd 6	type Rapid	result 0.5	date 2018-05-19	rnd 7	type Rapid	result 1
		Opponent Mpya, TM (Tshediso)				Opponent Mbedza, R (Richard)

#	Games	Start				End
1	6	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-26	rnd 1	type Blitz	result 1	date 2025-04-26	rnd 6	type Blitz	result 0.5
		Opponent Rishworth, J (Justin)				Opponent Meise, K (Keagen)
2	5	Tournament Rachella`s Cafe Blitz Tournament 1 2022				Tournament Rachella`s Cafe Blitz Tournament 1 2022
		date 2022-03-20	rnd 3	type Blitz	result 1	date 2022-03-20	rnd 7	type Blitz	result 1
		Opponent Jonker, WD (Wiehan)				Opponent Nene, TH (Themba)
3	3	Tournament Chessheroes Bowls Club Zoo Lake Challenge 2022				Tournament Chessheroes Bowls Club Zoo Lake Challenge 2022
		date 2022-07-02	rnd 4	type Blitz	result 1	date 2022-07-02	rnd 6	type Blitz	result 1
		Opponent Matuse, J (Jersen)				Opponent De Abreu, RN (Roberto)

#	Games	Start				End
1	6	Tournament 2024 Tshwane Chess Club Clash				Tournament Moja Chess Extravaganza 2025
		date 2024-10-12	rnd 4	type Standard	result 1	date 2025-04-26	rnd 4	type Blitz	result 1
		Opponent Molobi, G (Gomolemo)				Opponent Maliga, N (Norman)
2	5	Tournament 2023 KZN Open				Tournament 2023 KZN Open
		date 2023-04-29	rnd 1	type Standard	result 1	date 2023-04-30	rnd 5	type Standard	result 1
		Opponent Ximba, S (Siphesihle)				Opponent Subke, JJ (Jason)
3	4	Tournament 2019 Inter Region Chess Championships				Tournament Chess Heroes Open Rapid Challenge 2020
		date 2020-01-12	rnd 7	type Standard	result 1	date 2020-02-01	rnd 3	type Rapid	result 1
		Opponent Thwala, T (Thobeka)				Opponent Buthelezi, S (Simphiwe)

#	Games	Start				End
1	6	Tournament Chessheroes Superhero Challenge 2022				Tournament 2023 KZN Open
		date 2022-01-07	rnd 7	type Standard	result 1	date 2023-04-30	rnd 5	type Standard	result 1
		Opponent Mazibuko, K (Khanya)				Opponent Subke, JJ (Jason)
2	2	Tournament 2024 Tshwane Chess Club Clash				Tournament 2024 Tshwane Chess Club Clash
		date 2024-10-12	rnd 4	type Standard	result 1	date 2024-10-12	rnd 5	type Standard	result 1
		Opponent Molobi, G (Gomolemo)				Opponent Ngobeni, N (Njabulo)
3	2	Tournament 2023 KZN Open				Tournament 2024 Tshwane Chess Club Clash
		date 2023-04-30	rnd 7	type Standard	result 1	date 2024-10-12	rnd 1	type Standard	result 1
		Opponent Mpya, TM (Tshediso)				Opponent Khoza, A (Andani)

#	Games	Start				End
1	4	Tournament SWVG Arnold Classic Rapid & Blitz 2018				Tournament Chess Heroes Open Rapid Challenge 2020
		date 2018-05-20	rnd 10	type Rapid	result 1	date 2020-02-01	rnd 3	type Rapid	result 1
		Opponent Levy, D (Darren)				Opponent Buthelezi, S (Simphiwe)
2	2	Tournament Chess Heroes Open Rapid Challenge 2020				Tournament Hermanus Chess Club Open 2024
		date 2020-02-01	rnd 6	type Rapid	result 1	date 2024-04-20	rnd 1	type Rapid	result 1
		Opponent Horne, AH (Andrew)				Opponent Bouah, D (Denise)
3	1	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 3	type Rapid	result 1	date 2024-04-20	rnd 3	type Rapid	result 1
		Opponent Willenberg, KS (Kenneth)				Opponent Willenberg, KS (Kenneth)

#	Games	Start				End
1	4	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-26	rnd 1	type Blitz	result 1	date 2025-04-26	rnd 4	type Blitz	result 1
		Opponent Rishworth, J (Justin)				Opponent Maliga, N (Norman)
2	3	Tournament Rachella`s Cafe Blitz Tournament 1 2022				Tournament Rachella`s Cafe Blitz Tournament 1 2022
		date 2022-03-20	rnd 3	type Blitz	result 1	date 2022-03-20	rnd 5	type Blitz	result 1
		Opponent Jonker, WD (Wiehan)				Opponent Mathivha, PA (Phathutshedzo)
3	2	Tournament Wanderers Blitz Tournament 2024				Tournament Wanderers Blitz Tournament 2024
		date 2024-03-23	rnd 4	type Blitz	result 1	date 2024-03-23	rnd 5	type Blitz	result 1
		Opponent Jolliffe, SR (Shaun)				Opponent Maliga, N (Norman)

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	Khumalo ,KB (Keith Babongile)	4	1.5	-106.2	3	1	-141.7	1	0.5	0	0	0	0
1	Khumalo ,KB (Keith Babongile)	4	2106.1	1999.8	3	2130.4	1964.4	1	2079.2	2106.1	0	0	0
2	Mnguni ,JD (Jakob Dumisani)	4	0.5	-318.8	1	0.5	0	1	0	-425	2	0	-425
2	Mnguni ,JD (Jakob Dumisani)	4	2167.4	1848.6	1	2115.1	2167.4	1	2177.5	1742.4	2	2141.1	1742.4
3	Oatlhotse ,P (Providence)	3	0	-425	2	0	-425	0	0	0	1	0	-425
3	Oatlhotse ,P (Providence)	3	2209.4	1784.4	2	2197	1784.4	0	0	0	1	2270.1	1784.4
4	De Abreu ,RN (Roberto Nicolau)	3	1.5	0	0	0	0	1	0.5	0	2	1	0
4	De Abreu ,RN (Roberto Nicolau)	3	2176	2176	0	0	0	1	2148.4	2176	2	2095.1	2176
5	Steyn ,H (Hans)	3	1.5	0	0	0	0	0	0	0	3	1.5	0
5	Steyn ,H (Hans)	3	1810	1810	0	0	0	0	0	0	3	1828	1810
6	Van Rensburg ,RP (Ryan Pierre)	3	0.5	-283.3	0	0	0	0	0	0	3	0.5	-283.3
6	Van Rensburg ,RP (Ryan Pierre)	3	2213.4	1930	0	0	0	0	0	0	3	2173	1930
7	Beukes ,DM (Dante)	2	1	0	2	1	0	0	0	0	0	0	0
7	Beukes ,DM (Dante)	2	1861.7	1861.7	2	1861.5	1861.7	0	0	0	0	0	0
8	Hercules ,BV (Benjamin Vincent)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
8	Hercules ,BV (Benjamin Vincent)	2	2138.4	1925.9	2	2133.9	1925.9	0	0	0	0	0	0
9	Mpya ,TM (Tshediso Matome)	2	1.5	212.5	1	1	425	1	0.5	0	0	0	0
9	Mpya ,TM (Tshediso Matome)	2	1931.2	2143.8	1	1878	2356.2	1	1955.6	1931.2	0	0	0
10	Mabusela ,JM (Johannes Manyedi)	2	1	0	1	0.5	0	0	0	0	1	0.5	0
10	Mabusela ,JM (Johannes Manyedi)	2	2173.8	2173.8	1	2180.4	2173.8	0	0	0	1	2293	2173.8

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Klaver, C (Cornelis)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms