Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetsee, J (Jachelle)

Chess SA id

2130141557

FIDE id

Date of birth

2013-04-04 (U14)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-07-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1128.4	1154.8	1120	1200
Raw rating	1128.4	1154.8	1120	1200
Weighted rating	1128.4	1154.8	1120	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	183.6	176.8	185.8	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1128.4	1154.8	1120	1200
Analysis
Rating	1128.4	1154.8	1120	1200
Raw rating	1128.4	1154.8	1120	1200
Weighted rating	1128.4	1154.8	1120
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	183.6	176.8	185.8	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	1128.4	1154.8	1120	1200
New weighted rating	1128.4	1154.8	1120	1200
New weighted performance	0	0	0	0
Temp new rating	1128.4	1154.8	1120	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1128.4	1154.8	1120	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

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

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U14
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 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	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	13	3.5	26.92	-196.2	1196.8	1000.6
Standard	7	2.5	35.71	-121.4	1193.2	1071.8
Rapid	6	1	16.67	-283.3	1200.9	917.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1128.4	1154.8	1120	1200
2025-09-01	1128.4	1154.8	1120	1200
2025-08-01	1128.4	1154.8	1120	1200
2025-07-01	1128.4	1154.8	1120	1200
2025-06-01	1128.4	1154.8	1120	1200
2025-05-01	1128.4	1154.8	1120	1200
2025-04-01	1128.4	1154.8	1120	1200
2025-03-01	1128.4	1154.8	1120	1200
2025-02-01	1128.4	1154.8	1120	1200
2025-01-01	1128.4	1154.8	1120	1200
2024-12-01	1128.4	1154.8	1120	1200
2024-11-01	1128.4	1154.8	1120	1200
2024-10-01	1128.4	1154.8	1120	1200
2024-09-01	1128.4	1154.8	1120	1200
2024-08-01	1128.4	1154.8	1120	1200
2024-07-01	1128.4	1154.8	1120	1200
2024-06-01	1128.4	1154.8	1120	1200
2024-08-01	1128.4	1154.8	1120	1200
2024-04-01	1128.4	1154.8	1120	1200
2024-03-01	1128.4	1154.8	1120	1200
2024-02-01	1128.4	1154.8	1120	1200
2024-01-01	1128.4	1154.8	1120	1200
2023-12-01	1128.4	1154.8	1120	1200
2023-11-01	1128.4	1154.8	1120	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Bojanala Chess Federation Clash of Schools 2022 (PS Development Juniors)	2022-07-23	2022-07-23	Standard	Bojanala Platina (NBR)	4	3	2	Yes	Analysis
2	One For The Ages 2022 (U10)	2022-07-16	2022-07-16	Standard	Bojanala Platina (NBR)	5	4	0.5	Yes	Analysis
3	RMS Swiss For Rating of Players 2022 (U9)	2022-05-28	2022-05-28	Rapid	Ekurhuleni (GE)	7	6	1	Yes	Analysis

#	Games	Start				End
1	2	Tournament One For The Ages 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-16	rnd 5	type Standard	result 0.5	date 2022-07-23	rnd 1	type Standard	result 1
		Opponent Wilken, E (Elan)				Opponent Mogono, M (Manotshe)
2	1	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-23	rnd 4	type Standard	result 1	date 2022-07-23	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, J (Jean)				Opponent Van Der Merwe, J (Jean)
3	1	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 1	type Rapid	result 1	date 2022-05-28	rnd 1	type Rapid	result 1
		Opponent Moyo, M (Melokuhle)				Opponent Moyo, M (Melokuhle)

#	Games	Start				End
1	2	Tournament One For The Ages 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-16	rnd 5	type Standard	result 0.5	date 2022-07-23	rnd 1	type Standard	result 1
		Opponent Wilken, E (Elan)				Opponent Mogono, M (Manotshe)
2	1	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-23	rnd 4	type Standard	result 1	date 2022-07-23	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, J (Jean)				Opponent Van Der Merwe, J (Jean)

#	Games	Start				End
1	1	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 1	type Rapid	result 1	date 2022-05-28	rnd 1	type Rapid	result 1
		Opponent Moyo, M (Melokuhle)				Opponent Moyo, M (Melokuhle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-23	rnd 4	type Standard	result 1	date 2022-07-23	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, J (Jean)				Opponent Van Der Merwe, J (Jean)
2	1	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-23	rnd 1	type Standard	result 1	date 2022-07-23	rnd 1	type Standard	result 1
		Opponent Mogono, M (Manotshe)				Opponent Mogono, M (Manotshe)
3	1	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 1	type Rapid	result 1	date 2022-05-28	rnd 1	type Rapid	result 1
		Opponent Moyo, M (Melokuhle)				Opponent Moyo, M (Melokuhle)

#	Games	Start				End
1	1	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-23	rnd 4	type Standard	result 1	date 2022-07-23	rnd 4	type Standard	result 1
		Opponent Van Der Merwe, J (Jean)				Opponent Van Der Merwe, J (Jean)
2	1	Tournament Bojanala Chess Federation Clash of Schools 2022				Tournament Bojanala Chess Federation Clash of Schools 2022
		date 2022-07-23	rnd 1	type Standard	result 1	date 2022-07-23	rnd 1	type Standard	result 1
		Opponent Mogono, M (Manotshe)				Opponent Mogono, M (Manotshe)

#	Games	Start				End
1	1	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 1	type Rapid	result 1	date 2022-05-28	rnd 1	type Rapid	result 1
		Opponent Moyo, M (Melokuhle)				Opponent Moyo, M (Melokuhle)

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	Van Der Merwe ,L (Luwan Louis)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Van Der Merwe ,L (Luwan Louis)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Changara ,A (Alvis Tafadzwa)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Changara ,A (Alvis Tafadzwa)	1	1347.4	922.4	1	1344.9	922.4	0	0	0	0	0	0
3	Wilken ,E (Elan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
3	Wilken ,E (Elan)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
4	Esterhuizen ,E (Ewald)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Esterhuizen ,E (Ewald)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Britz ,B (Benjamin)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Britz ,B (Benjamin)	1	1005.1	580.1	1	978.4	580.1	0	0	0	0	0	0
6	Van Der Merwe ,J (Jean)	1	1	425	1	1	425	0	0	0	0	0	0
6	Van Der Merwe ,J (Jean)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Mogono ,M (Manotshe)	1	1	425	1	1	425	0	0	0	0	0	0
7	Mogono ,M (Manotshe)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Keyter ,A (Alissa)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Keyter ,A (Alissa)	1	1210.2	785.2	0	0	0	1	1200	785.2	0	0	0
9	Duvenage ,R (Reanu)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Duvenage ,R (Reanu)	1	1180.7	755.7	0	0	0	1	1200	755.7	0	0	0
10	Klopper ,J (Jannes)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Klopper ,J (Jannes)	1	1200	775	0	0	0	1	1200	775	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Coetsee, J (Jachelle)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms