Chess South Africa Ratings Database

PLAYER PAGE

Personal

Kern, J (Joanel)

Chess SA id

2090303599

FIDE id

Date of birth

2009-01-13 (U18)

Gender

Female

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-30

Personal details last changed

2025-08-20

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1197	1193.4	1200	1200
Raw rating	1148	1134.6	1200	1200
Weighted rating	1197	1193.4	1200	1200
Weighted performance	0	0	0	0
Floor	719.6	721.6	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	178.6	182	165.8	165.8
Highest rating	1310.7 2024-05-01	1303.5 2024-05-01	1200 2024-06-01	1200 2024-06-01
Highest raw rating	1219.6 2024-06-01	1221.6 2024-06-01	1200 2024-06-01	1200 2024-06-01
Highest weighted rating	1219.6 2024-07-01	1221.6 2024-07-01	1200 2024-06-01	1200 2024-06-01
Highest weighted performance	1310.7 2024-05-01	1303.5 2024-05-01	1200 2024-06-01	1200 2024-06-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-4.1	-5	0	0
New rating	1192.8	1188.4	1200	1200
Analysis
Rating	1197	1193.4	1200	1200
Raw rating	1148	1134.6	1200	1200
Weighted rating	1197	1193.4	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	719.6	721.6	700	700
Max/Min rating change allowed	178.6	182	165.8	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	1148	1134.6	1200	1200
New weighted rating	1192.8	1188.4	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1192.8	1188.4	1200	1200
Temp new rating +/-	-4.1	-5	0	0
Final new rating +/-	-4.1	-5	0	0
New rating	1192.8	1188.4	1200	1200
New K-factor	36	36	36	36
New floor	719.6	721.6	700	700

Item	Main	Standard
	0	0
	6	6
	14	14
	0	0
	0	0
	0	0
History	20	20

Games since
	Main 20	Standard 20		Rapid 0		Blitz 0
Gender	Female
Age group	U18
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-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	6	0	0	-425	1355.2	930.2
Standard	6	0	0	-425	1355.2	930.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	20	7	35	-127.5	1250.9	1123.4
Standard	20	7	35	-127.5	1250.9	1123.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1148	1134.6	1200	1200
2025-09-30	1191.3	1187.1	1200	1200
2025-09-01	1191.3	1187.1	1200	1200
2025-08-01	1203.1	1200.8	1200	1200
2025-07-01	1203.1	1200.8	1200	1200
2025-06-01	1203.1	1200.8	1200	1200
2025-05-01	1203.1	1200.8	1200	1200
2025-04-01	1203.1	1200.8	1200	1200
2025-03-01	1203.1	1200.8	1200	1200
2025-02-01	1203.1	1200.7	1200	1200
2025-01-01	1203.1	1199.3	1200	1200
2024-12-01	1203.1	1199.3	1200	1200
2024-11-01	1203.1	1199.3	1200	1200
2024-10-01	1203.1	1199.3	1200	1200
2024-09-01	1203.1	1199.3	1200	1200
2024-08-01	1184	1177.3	1200	1200
2024-07-01	1219.6	1221.6	1200	1200
2024-09-01	1219.6	1221.6	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	2025 Gauteng Top Schools Teams (U17)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	0	Yes	Analysis
2	GDE (D8) Sedibeng West Schools - Teams 2025 (U17)	2025-08-16	2025-08-16	Standard	Sedibeng (GSV)	4	1	0	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng Top Schools Teams (U17)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	0	Yes	Analysis
2	GDE (D8) Sedibeng West Schools - Teams 2025 (U17)	2025-08-16	2025-08-16	Standard	Sedibeng (GSV)	4	1	0	Yes	Analysis
3	Sedibeng West District Schools Chess Team's Championships 2024 (U15)	2024-08-12	2024-08-12	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	Eureka Open 27 July 2024 (D)	2024-07-27	2024-07-27	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
5	Sedibeng Chess Open 11 May 2024 (U15)	2024-05-11	2024-05-11	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-08-12	rnd 4	type Standard	result 1	date 2024-08-12	rnd 5	type Standard	result 1
		Opponent Motheke, B (Bokang)				Opponent Sukubala, N (Nthabeleng)
2	2	Tournament Eureka Open 27 July 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-07-27	rnd 5	type Standard	result 1	date 2024-08-12	rnd 1	type Standard	result 1
		Opponent Dlamini, L (Lwazi)				Opponent Mokoena, K (Khumo)
3	2	Tournament Sedibeng Chess Open 11 May 2024				Tournament Sedibeng Chess Open 11 May 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-05-11	rnd 5	type Standard	result 1
		Opponent Du Plooy, M (Mathew)				Opponent Malik, G (Goddwill)

#	Games	Start				End
1	2	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-08-12	rnd 4	type Standard	result 1	date 2024-08-12	rnd 5	type Standard	result 1
		Opponent Motheke, B (Bokang)				Opponent Sukubala, N (Nthabeleng)
2	2	Tournament Eureka Open 27 July 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-07-27	rnd 5	type Standard	result 1	date 2024-08-12	rnd 1	type Standard	result 1
		Opponent Dlamini, L (Lwazi)				Opponent Mokoena, K (Khumo)
3	2	Tournament Sedibeng Chess Open 11 May 2024				Tournament Sedibeng Chess Open 11 May 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-05-11	rnd 5	type Standard	result 1
		Opponent Du Plooy, M (Mathew)				Opponent Malik, G (Goddwill)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-08-12	rnd 4	type Standard	result 1	date 2024-08-12	rnd 5	type Standard	result 1
		Opponent Motheke, B (Bokang)				Opponent Sukubala, N (Nthabeleng)
2	2	Tournament Eureka Open 27 July 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-07-27	rnd 5	type Standard	result 1	date 2024-08-12	rnd 1	type Standard	result 1
		Opponent Dlamini, L (Lwazi)				Opponent Mokoena, K (Khumo)
3	2	Tournament Sedibeng Chess Open 11 May 2024				Tournament Sedibeng Chess Open 11 May 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-05-11	rnd 5	type Standard	result 1
		Opponent Du Plooy, M (Mathew)				Opponent Malik, G (Goddwill)

#	Games	Start				End
1	2	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-08-12	rnd 4	type Standard	result 1	date 2024-08-12	rnd 5	type Standard	result 1
		Opponent Motheke, B (Bokang)				Opponent Sukubala, N (Nthabeleng)
2	2	Tournament Eureka Open 27 July 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-07-27	rnd 5	type Standard	result 1	date 2024-08-12	rnd 1	type Standard	result 1
		Opponent Dlamini, L (Lwazi)				Opponent Mokoena, K (Khumo)
3	2	Tournament Sedibeng Chess Open 11 May 2024				Tournament Sedibeng Chess Open 11 May 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-05-11	rnd 5	type Standard	result 1
		Opponent Du Plooy, M (Mathew)				Opponent Malik, G (Goddwill)

No games found.

#	Games	Start				End

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	Nyambi ,M (Mbali)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Nyambi ,M (Mbali)	1	1253.8	828.8	1	1247.8	828.8	0	0	0	0	0	0
2	Marimuthu ,S (Shaylen)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Marimuthu ,S (Shaylen)	1	1344.6	919.6	1	1337	919.6	0	0	0	0	0	0
3	Sukubala ,N (Nthabeleng)	1	1	425	1	1	425	0	0	0	0	0	0
3	Sukubala ,N (Nthabeleng)	1	1190.7	1615.7	1	1190.3	1615.7	0	0	0	0	0	0
4	Mavhungu ,W (Wanga)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Mavhungu ,W (Wanga)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Mofokeng ,M (Mathabo)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Mofokeng ,M (Mathabo)	1	1206.5	781.5	1	1189.6	781.5	0	0	0	0	0	0
6	Malik ,G (Goddwill)	1	1	425	1	1	425	0	0	0	0	0	0
6	Malik ,G (Goddwill)	1	1154.8	1579.8	1	1143.6	1579.8	0	0	0	0	0	0
7	Kudzai ,M (Madzudzo)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Kudzai ,M (Madzudzo)	1	1263.1	838.1	1	1224.1	838.1	0	0	0	0	0	0
8	Boroko ,L (Lebohang)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Boroko ,L (Lebohang)	1	1278.8	853.8	1	1262.2	853.8	0	0	0	0	0	0
9	Du Plooy ,M (Matthew)	1	1	425	1	1	425	0	0	0	0	0	0
9	Du Plooy ,M (Matthew)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Saunders ,W (Wayde)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Saunders ,W (Wayde)	1	1526.5	1101.5	1	1527.2	1101.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Kern, J (Joanel)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms