Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koert, C (Connor)

Chess SA id

1090155762

FIDE id

Date of birth

2009-08-04 (U18)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-08-31

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1322.8	1324.2	1200	1110.6
Raw rating	1320.8	1324	1200	1110.6
Weighted rating	1322.8	1324.2	1200	1107.4
Weighted performance	1050.4	1037.5	0	0
Floor	886.9	886.5	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	139.6	139	165.8	188.3
Highest rating	1402.4 2024-07-01	1408.2 2024-03-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1386.9 2024-08-01	1386.5 2024-08-01	1200 2024-02-01	1200 2019-12-01
Highest weighted rating	1320.8 2025-08-01	1324 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1402.4 2024-07-01	1408.2 2024-03-01	1200 2024-02-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.2	-0.2	0	0
New rating	1323	1324	1200	1110.6
Analysis
Rating	1322.8	1324.2	1200	1110.6
Raw rating	1320.8	1324	1200	1110.6
Weighted rating	1322.8	1324.2	1200
Weighted performance	1050.4	1037.5	0
K-factor	36	36	36	36
Floor	886.9	886.5	700	700
Max/Min rating change allowed	139.6	139	165.8	188.3
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	1320.8	1324	1200	1110.6
New weighted rating	1323	1324	1200	1107.8
New weighted performance	1042.9	1030.1	0	0
Temp new rating	1323	1324	1200	1110.6
Temp new rating +/-	0.2	-0.2	0	0
Final new rating +/-	0.2	-0.2	0	0
New rating	1323	1324	1200	1110.6
New K-factor	36	36	36	36
New floor	886.9	886.5	700	700

Item	Main	Standard	Blitz
	0	0	0
	0	0	0
	21	21	0
	36	30	6
	0	0	0
	0	0	0
History	57	51	6

Games since
	Main 21	Standard 21		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	57	25	43.86	-52.2	1317.2	1265
Standard	51	24	47.06	-25	1311	1286
Rapid	0	0	0	0	0	0
Blitz	6	1	16.67	-283.3	1369.5	1086.2

Date	Main	Standard	Rapid	Blitz
2025-11-01	1320.8	1324	1200	1110.6
2025-09-30	1320.8	1324	1200	1110.6
2025-09-01	1320.8	1324	1200	1110.6
2025-08-01	1320.8	1324	1200	1110.6
2025-07-01	1319.3	1323.1	1200	1110.6
2025-06-01	1317.4	1321.6	1200	1110.6
2025-05-01	1315.5	1319.8	1200	1110.6
2025-04-01	1315.5	1317.5	1200	1110.6
2025-03-01	1315.5	1314.9	1200	1110.6
2025-02-01	1315.5	1311.2	1200	1110.6
2025-01-01	1315.5	1294.3	1200	1101.4
2024-12-01	1315.5	1294.3	1200	1101.4
2024-11-01	1315.5	1294.3	1200	1101.4
2024-10-01	1315.5	1294.3	1200	1101.4
2024-09-01	1386.9	1386.5	1200	1101.4
2024-08-01	1386.9	1386.5	1200	1101.4
2024-07-01	1357.2	1378.2	1200	1101.4
2024-09-01	1357.2	1378.2	1200	1101.4
2024-05-01	1357.2	1378.2	1200	1101.4
2024-04-01	1279.3	1312.5	1200	1101.4
2024-03-01	1279.3	1312.5	1200	1101.4
2024-02-01	1266.4	1307.8	1200	1101.4
2024-01-01	1266.4	1307.8	1200	1101.4
2023-12-01	1266.4	1307.8	1200	1101.4

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	JMC Crawford Sandton 2025 (C)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	0	0	No	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JMC Crawford Sandton 2025 (C)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	0	0	No	Analysis
2	JCC Khelo India 1st Annual Chess Tournament 2024 (B)	2024-08-31	2024-08-31	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
3	Eureka Open 27 July 2024 (C)	2024-07-27	2024-07-27	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	Dainfern College Chess League 2024 (A)	2024-01-29	2024-03-11	Standard	Johannesburg Metro (GJM)	6	6	5	Yes	Analysis
5	2024 Piet Robbertse Open Chess Tournament (C)	2024-02-03	2024-02-04	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
6	2023 Moja Chess Extravaganza (B)	2023-09-30	2023-10-04	Standard	Frances Baard (NCF)	9	9	3	Yes	Analysis
7	2023 Moja Chess Extravaganza (Blitz)	2023-10-03	2023-10-03	Blitz	Frances Baard (NCF)	7	6	1	Yes	Analysis
8	St Peters College Chess League 2023 (A)	2023-09-11	2023-10-23	Standard	Johannesburg Metro (GJM)	6	4	3.5	Yes	Analysis
9	Chess Power House 2023 (B)	2023-08-19	2023-08-19	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
10	Steyn City School Chess League 2023 (A)	2023-05-05	2023-05-29	Standard	Johannesburg Metro (GJM)	6	5	1.5	Yes	Analysis
11	Steyn City School Chess League 2023 (B)	2023-05-05	2023-05-29	Standard	Johannesburg Metro (GJM)	6	1	0	Yes	Analysis
12	Mzansi Fide Open 2023 (Intermediate)	2023-04-27	2023-05-01	Standard	Johannesburg Metro (GJM)	6	6	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament Dainfern College Chess League 2024				Tournament Dainfern College Chess League 2024
		date 2024-02-12	rnd 3	type Standard	result 1	date 2024-03-11	rnd 6	type Standard	result 1
		Opponent Myburgh, J (Joshua)				Opponent Mukhari, Z (Zwivhuya)
2	3	Tournament Eureka Open 27 July 2024				Tournament Eureka Open 27 July 2024
		date 2024-07-27	rnd 2	type Standard	result 1	date 2024-07-27	rnd 4	type Standard	result 1
		Opponent Israel, L (Leo)				Opponent Williams, A (Anika)
3	3	Tournament St Peters College Chess League 2023				Tournament 2024 Piet Robbertse Open Chess Tournament
		date 2023-10-16	rnd 5	type Standard	result 1	date 2024-02-03	rnd 1	type Standard	result 1
		Opponent Kalakonda, S (Sahasra)				Opponent Ballim, S (Salif)

#	Games	Start				End
1	4	Tournament Dainfern College Chess League 2024				Tournament Dainfern College Chess League 2024
		date 2024-02-12	rnd 3	type Standard	result 1	date 2024-03-11	rnd 6	type Standard	result 1
		Opponent Myburgh, J (Joshua)				Opponent Mukhari, Z (Zwivhuya)
2	3	Tournament Eureka Open 27 July 2024				Tournament Eureka Open 27 July 2024
		date 2024-07-27	rnd 2	type Standard	result 1	date 2024-07-27	rnd 4	type Standard	result 1
		Opponent Israel, L (Leo)				Opponent Williams, A (Anika)
3	3	Tournament St Peters College Chess League 2023				Tournament 2024 Piet Robbertse Open Chess Tournament
		date 2023-10-16	rnd 5	type Standard	result 1	date 2024-02-03	rnd 1	type Standard	result 1
		Opponent Kalakonda, S (Sahasra)				Opponent Ballim, S (Salif)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament 2023 Moja Chess Extravaganza				Tournament 2023 Moja Chess Extravaganza
		date 2023-10-01	rnd 7	type Blitz	result 1	date 2023-10-01	rnd 7	type Blitz	result 1
		Opponent Lekganyane, M (Makgoba)				Opponent Lekganyane, M (Makgoba)

#	Games	Start				End
1	4	Tournament Dainfern College Chess League 2024				Tournament Dainfern College Chess League 2024
		date 2024-02-12	rnd 3	type Standard	result 1	date 2024-03-11	rnd 6	type Standard	result 1
		Opponent Myburgh, J (Joshua)				Opponent Mukhari, Z (Zwivhuya)
2	3	Tournament Eureka Open 27 July 2024				Tournament Eureka Open 27 July 2024
		date 2024-07-27	rnd 2	type Standard	result 1	date 2024-07-27	rnd 4	type Standard	result 1
		Opponent Israel, L (Leo)				Opponent Williams, A (Anika)
3	3	Tournament St Peters College Chess League 2023				Tournament 2024 Piet Robbertse Open Chess Tournament
		date 2023-10-16	rnd 5	type Standard	result 1	date 2024-02-03	rnd 1	type Standard	result 1
		Opponent Kalakonda, S (Sahasra)				Opponent Ballim, S (Salif)

#	Games	Start				End
1	4	Tournament Dainfern College Chess League 2024				Tournament Dainfern College Chess League 2024
		date 2024-02-12	rnd 3	type Standard	result 1	date 2024-03-11	rnd 6	type Standard	result 1
		Opponent Myburgh, J (Joshua)				Opponent Mukhari, Z (Zwivhuya)
2	3	Tournament Eureka Open 27 July 2024				Tournament Eureka Open 27 July 2024
		date 2024-07-27	rnd 2	type Standard	result 1	date 2024-07-27	rnd 4	type Standard	result 1
		Opponent Israel, L (Leo)				Opponent Williams, A (Anika)
3	3	Tournament St Peters College Chess League 2023				Tournament 2024 Piet Robbertse Open Chess Tournament
		date 2023-10-16	rnd 5	type Standard	result 1	date 2024-02-03	rnd 1	type Standard	result 1
		Opponent Kalakonda, S (Sahasra)				Opponent Ballim, S (Salif)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament 2023 Moja Chess Extravaganza				Tournament 2023 Moja Chess Extravaganza
		date 2023-10-01	rnd 7	type Blitz	result 1	date 2023-10-01	rnd 7	type Blitz	result 1
		Opponent Lekganyane, M (Makgoba)				Opponent Lekganyane, M (Makgoba)

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	Tshabalala ,M (Mluleki)	1	1	425	1	1	425	0	0	0	0	0	0
1	Tshabalala ,M (Mluleki)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Kekana ,N (Neo)	1	1	425	1	1	425	0	0	0	0	0	0
2	Kekana ,N (Neo)	1	1393.7	1818.7	1	1387	1818.7	0	0	0	0	0	0
3	Pitso ,K (Kabelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Pitso ,K (Kabelo)	1	1406.5	981.5	1	1374.7	981.5	0	0	0	0	0	0
4	Stelloh ,A (Alexander)	1	1	425	1	1	425	0	0	0	0	0	0
4	Stelloh ,A (Alexander)	1	1382.2	1807.2	1	1384.9	1807.2	0	0	0	0	0	0
5	Odendaal ,H (Hayden)	1	1	425	1	1	425	0	0	0	0	0	0
5	Odendaal ,H (Hayden)	1	1309.2	1734.2	1	1338.5	1734.2	0	0	0	0	0	0
6	Bingani ,R (Richard)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Bingani ,R (Richard)	1	1314.9	889.9	1	1314.9	889.9	0	0	0	0	0	0
7	Ngubeni ,JM (Jackie)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Ngubeni ,JM (Jackie)	1	1528.8	1103.8	1	1492.5	1103.8	0	0	0	0	0	0
8	Makaula ,L (Lubanzi)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Makaula ,L (Lubanzi)	1	1591	1166	1	1512.1	1166	0	0	0	0	0	0
9	Swarts ,K (Kai)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Swarts ,K (Kai)	1	1351.7	926.7	1	1365.8	926.7	0	0	0	0	0	0
10	Masiu ,L (Lawrence)	1	1	425	1	1	425	0	0	0	0	0	0
10	Masiu ,L (Lawrence)	1	1155	1580	1	1152.1	1580	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Koert, C (Connor)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms