Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzer, J (Jeann-Louis)

Chess SA id

2130313130

FIDE id

Date of birth

2013-05-13 (U14)

Gender

Female

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-29

Personal details last changed

2025-09-05

Junior GPX Games

Junior GPX Points

1126.3

Item	Main	Standard	Rapid	Blitz
Rating	1213	1210	1200	1200
Raw rating	1213	1210	1200	1200
Weighted rating	1204.4	1204.9	1200	1200
Weighted performance	1082.6	1075	0	0
Floor	714.6	718	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	162.8	163.5	165.8	165.8
Highest rating	1264.7 2024-11-01	1265.4 2024-11-01	1200 2024-11-01	1200 2024-11-01
Highest raw rating	1214.6 2024-12-01	1218 2024-12-01	1200 2024-11-01	1200 2024-11-01
Highest weighted rating	1214.6 2025-02-01	1218 2025-02-01	1200 2024-11-01	1200 2024-11-01
Highest weighted performance	1264.7 2024-11-01	1265.4 2024-11-01	1200 2024-11-01	1200 2024-11-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1213	1210	1200	1200
Analysis
Rating	1213	1210	1200	1200
Raw rating	1213	1210	1200	1200
Weighted rating	1204.4	1204.9	1200
Weighted performance	1082.6	1075	0
K-factor	36	36	36	36
Floor	714.6	718	700	700
Max/Min rating change allowed	162.8	163.5	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	1213	1210	1200	1200
New weighted rating	1205.2	1205.4	1200	1200
New weighted performance	1076	1068.4	0	0
Temp new rating	1213	1210	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1213	1210	1200	1200
New K-factor	36	36	36	36
New floor	714.6	718	700	700

Item	Main	Standard
	0	0
	19	19
	5	5
	0	0
	0	0
	0	0
History	24	24

Games since
	Main 24	Standard 24		Rapid 0		Blitz 0
Gender	F
Age group	U14
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
F	-1		-1		-1
U14	-1		-1		-1
U14 F	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
F	-1		-1		-1
U14	-1		-1		-1
U14 F	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
F	-1		-1		-1
U14	-1		-1		-1
U14 F	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
F	-1		-1		-1
U14	-1		-1		-1
U14 F	-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	19	7	36.84	-111.8	1203.7	1091.8
Standard	19	7	36.84	-111.8	1203.7	1091.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	24	9.5	39.58	-88.5	1216.9	1128.4
Standard	24	9.5	39.58	-88.5	1216.9	1128.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1213	1210	1200	1200
2025-09-30	1202.5	1203.1	1200	1200
2025-09-01	1202.5	1203.1	1200	1200
2025-08-01	1202.5	1203.1	1200	1200
2025-07-01	1201.2	1201.5	1200	1200
2025-06-01	1203.6	1204.4	1200	1200
2025-05-01	1203.5	1204.3	1200	1200
2025-04-01	1203.2	1203.9	1200	1200
2025-03-01	1200.9	1201	1200	1200
2025-02-01	1214.6	1218	1200	1200
2025-01-01	1214.6	1218	1200	1200
2024-12-01	1214.6	1218	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	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	2025 Gauteng Top Schools Teams (U13 Girls)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
2	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2025 JMCA Open Chess Tournament (D)	2025-06-07	2025-06-07	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
4	Constantiapark Open 2025 (D)	2025-02-15	2025-02-15	Standard	Tshwane (GTP)	5	5	1.5	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 (U13 Girls)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
2	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2025 JMCA Open Chess Tournament (D)	2025-06-07	2025-06-07	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
4	Constantiapark Open 2025 (D)	2025-02-15	2025-02-15	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
5	Lardies Ope 2024 (U12)	2024-10-26	2024-10-26	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2025 Gauteng Top Schools Teams				Tournament 2025 Gauteng Top Schools Teams
		date 2025-08-29	rnd 3	type Standard	result 0.5	date 2025-08-29	rnd 5	type Standard	result 1
		Opponent Wessels, A (Amore)				Opponent Janse Van Rensburg, D (Danike)
2	2	Tournament 2025 Wynie Robbertse Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Manamela, B (Bokang)				Opponent Masilela, S (Siyamthanda)
3	2	Tournament Constantiapark Open 2025				Tournament 2025 JMCA Open Chess Tournament
		date 2025-02-15	rnd 5	type Standard	result 0.5	date 2025-06-07	rnd 2	type Standard	result 1
		Opponent Janse Van Vuuren, E (Estiaan)				Opponent Schepers, D (Deegan)

#	Games	Start				End
1	2	Tournament 2025 Wynie Robbertse Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Manamela, B (Bokang)				Opponent Masilela, S (Siyamthanda)
2	2	Tournament Constantiapark Open 2025				Tournament 2025 JMCA Open Chess Tournament
		date 2025-02-15	rnd 5	type Standard	result 0.5	date 2025-06-07	rnd 2	type Standard	result 1
		Opponent Janse Van Vuuren, E (Estiaan)				Opponent Schepers, D (Deegan)
3	2	Tournament Lardies Ope 2024				Tournament Lardies Ope 2024
		date 2024-10-26	rnd 3	type Standard	result 0.5	date 2024-10-26	rnd 4	type Standard	result 1
		Opponent Pienaar, D (Declan)				Opponent Botha, G (Gregory)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2025 Wynie Robbertse Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Manamela, B (Bokang)				Opponent Masilela, S (Siyamthanda)
2	1	Tournament 2025 JMCA Open Chess Tournament				Tournament 2025 JMCA Open Chess Tournament
		date 2025-06-07	rnd 2	type Standard	result 1	date 2025-06-07	rnd 2	type Standard	result 1
		Opponent Schepers, D (Deegan)				Opponent Schepers, D (Deegan)
3	1	Tournament Constantiapark Open 2025				Tournament Constantiapark Open 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Goosen, T (Teone)				Opponent Goosen, T (Teone)

#	Games	Start				End
1	2	Tournament 2025 Wynie Robbertse Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-07-19	rnd 5	type Standard	result 1
		Opponent Manamela, B (Bokang)				Opponent Masilela, S (Siyamthanda)
2	1	Tournament 2025 JMCA Open Chess Tournament				Tournament 2025 JMCA Open Chess Tournament
		date 2025-06-07	rnd 2	type Standard	result 1	date 2025-06-07	rnd 2	type Standard	result 1
		Opponent Schepers, D (Deegan)				Opponent Schepers, D (Deegan)
3	1	Tournament Constantiapark Open 2025				Tournament Constantiapark Open 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Goosen, T (Teone)				Opponent Goosen, T (Teone)

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	Goosen ,T (Teone)	1	1	425	1	1	425	0	0	0	0	0	0
1	Goosen ,T (Teone)	1	1127.3	1552.3	1	1112.8	1552.3	0	0	0	0	0	0
2	Mashigoana ,B (Boipelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Mashigoana ,B (Boipelo)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Janse Van Rensburg ,D (Danike)	1	1	425	1	1	425	0	0	0	0	0	0
3	Janse Van Rensburg ,D (Danike)	1	1288.2	1713.2	1	1295.8	1713.2	0	0	0	0	0	0
4	Schepers ,D (Deegan)	1	1	425	1	1	425	0	0	0	0	0	0
4	Schepers ,D (Deegan)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Magana ,K (Kgopotso)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Magana ,K (Kgopotso)	1	1438.4	1013.4	1	1275.8	1013.4	0	0	0	0	0	0
6	Janse Van Vuuren ,E (Estiaan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Janse Van Vuuren ,E (Estiaan)	1	992.5	992.5	1	960.1	992.5	0	0	0	0	0	0
7	De Klerk ,A (Antonie)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	De Klerk ,A (Antonie)	1	1177.2	752.2	1	1178.3	752.2	0	0	0	0	0	0
8	Mampane ,O (Oratile)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Mampane ,O (Oratile)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Pienaar ,D (Declan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Pienaar ,D (Declan)	1	1184.1	1184.1	1	1180.8	1184.1	0	0	0	0	0	0
10	Masilela ,S (Siyamthanda)	1	1	425	1	1	425	0	0	0	0	0	0
10	Masilela ,S (Siyamthanda)	1	1200	1625	1	1200	1625	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

Coetzer, J (Jeann-Louis)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms