Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, J (Jaco)

Chess SA id

109076176

FIDE id

Date of birth

2009-10-17 (U18)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-02-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1066.3	1072.6	542.6	542.6
Raw rating	1066.3	1072.6	542.6	542.6
Weighted rating	1066.3	1072.6	542.6	542.6
Weighted performance	353.9	351.2	0	0
Floor	569.6	583	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	200.6	198.8	423.1	423.1
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1069.6 2020-01-01	1083 2020-01-01	542.6 2024-02-01	542.6 2024-02-01
Highest weighted rating	1069.6 2024-11-01	1083 2024-11-01	542.6 2024-11-01	542.6 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1066.3	1072.6	542.6	542.6
Analysis
Rating	1066.3	1072.6	542.6	542.6
Raw rating	1066.3	1072.6	542.6	542.6
Weighted rating	1066.3	1072.6	542.6
Weighted performance	353.9	351.2	0
K-factor	40	40	40	40
Floor	569.6	583	500	500
Max/Min rating change allowed	200.6	198.8	423.1	423.1
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	1066.3	1072.6	542.6	542.6
New weighted rating	1066.3	1072.6	542.6	542.6
New weighted performance	353.6	350.8	0	0
Temp new rating	1066.3	1072.6	542.6	542.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1066.3	1072.6	542.6	542.6
New K-factor	40	40	40	40
New floor	569.6	583	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	5	5
	0	0
History	197	197

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Sedibeng (GSV)
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	85	36.5	42.94	-60	1010.2	950.2
Standard	85	36.5	42.94	-60	1010.2	950.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1066.3	1072.6	542.6	542.6
2025-09-01	1066.3	1072.6	542.6	542.6
2025-08-01	1066.3	1072.6	542.6	542.6
2025-07-01	1066.3	1072.6	542.6	542.6
2025-06-01	1066.3	1072.6	542.6	542.6
2025-05-01	1066.3	1072.6	542.6	542.6
2025-04-01	1066.3	1072.6	542.6	542.6
2025-03-01	1066.3	1072.6	542.6	542.6
2025-02-01	1066.3	1072.6	542.6	542.6
2025-01-01	1066.3	1072.6	542.6	542.6
2024-12-01	1066.3	1072.6	542.6	542.6
2024-11-01	1066.3	1072.6	542.6	542.6
2024-10-01	1066.3	1072.6	542.6	542.6
2024-09-01	1066.3	1072.6	542.6	542.6
2024-08-01	1066.3	1072.6	542.6	542.6
2024-07-01	1066.3	1072.6	542.6	542.6
2024-06-01	1066.3	1072.6	542.6	542.6
2024-08-01	1066.3	1072.6	542.6	542.6
2024-04-01	1066.3	1072.6	542.6	542.6
2024-03-01	1066.3	1072.6	542.6	542.6
2024-02-01	1066.3	1072.6	542.6	542.6
2024-01-01	1066.3	1072.6	542.6	542.6
2023-12-01	1066.3	1072.6	542.6	542.6
2023-11-01	1066.3	1072.6	542.6	542.6

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	Heidelberg Klub Open 2002 (C)	2022-02-19	2022-02-19	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
2	2019 Gauteng School League Finals (U11 Open)	2019-08-23	2019-08-23	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	D7 Primary School League 2019 (U11)	2019-08-03	2019-08-03	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	D7 Individuals 2019 (U11 Boys)	2019-05-04	2019-05-04	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
5	South African Junior Team Championships 2018 (U12D)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	6	2	Yes	Analysis
6	2018 Interregion Sedibeng vs Ekurhuleni (P)	2018-11-03	2018-11-03	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
7	Eureka Chess Open 2018 (H)	2018-09-29	2018-09-29	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
8	2018 Gauteng League Final (U9)	2018-08-24	2018-08-24	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
9	Heidelberg Klub Round Robin 2018 (Team 7)	2018-08-18	2018-08-18	Standard	Sedibeng (GSV)	7	6	3.5	Yes	Analysis
10	TST-MSA Tournament 2018 (E)	2018-07-21	2018-07-21	Standard	Sedibeng (GSV)	5	4	2	Yes	Analysis
11	Hoerskool Drie Riviere Open 2018 (D)	2018-06-09	2018-06-09	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
12	Broadland`s Knights Chess Open 2018 (C)	2018-06-16	2018-06-16	Standard	Sedibeng (GSV)	5	4	0	Yes	Analysis
13	Heidelberg Skaak Klub 2018 (Team 9)	2018-05-05	2018-05-05	Standard	Sedibeng (GSV)	5	5	1	Yes	Analysis
14	Amigo Spur Eligwa Chess Open 2018 (C)	2018-05-19	2018-05-19	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
15	D7 Primary School League 2023 (U9 Boys+Mixed)	2018-04-21	2018-04-21	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
16	D7 Individual 2018 (U9 Boys)	2018-02-24	2018-02-24	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
17	South African Junior Team Championships 2017 (U12D)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	6	1	Yes	Analysis

#	Games	Start				End
1	5	Tournament D7 Primary School League 2023				Tournament D7 Primary School League 2023
		date 2018-04-21	rnd 1	type Standard	result 1	date 2018-04-21	rnd 5	type Standard	result 1
		Opponent Els, C (Christiaan)				Opponent Sloan, A (Alex)
2	4	Tournament 2018 Interregion Sedibeng vs Ekurhuleni				Tournament South African Junior Team Championships 2018
		date 2018-11-03	rnd 4	type Standard	result 1	date 2018-12-17	rnd 3	type Standard	result 1
		Opponent Van Biljon, J (Jessica)				Opponent Manadan, A (Anina)
3	3	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 3	type Standard	result 1	date 2018-08-24	rnd 5	type Standard	result 1
		Opponent Strydom, S (Stiaan)				Opponent Ncube, M (Melokuhle)

#	Games	Start				End
1	5	Tournament D7 Primary School League 2023				Tournament D7 Primary School League 2023
		date 2018-04-21	rnd 1	type Standard	result 1	date 2018-04-21	rnd 5	type Standard	result 1
		Opponent Els, C (Christiaan)				Opponent Sloan, A (Alex)
2	4	Tournament 2018 Interregion Sedibeng vs Ekurhuleni				Tournament South African Junior Team Championships 2018
		date 2018-11-03	rnd 4	type Standard	result 1	date 2018-12-17	rnd 3	type Standard	result 1
		Opponent Van Biljon, J (Jessica)				Opponent Manadan, A (Anina)
3	3	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 3	type Standard	result 1	date 2018-08-24	rnd 5	type Standard	result 1
		Opponent Strydom, S (Stiaan)				Opponent Ncube, M (Melokuhle)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament D7 Primary School League 2023				Tournament D7 Primary School League 2023
		date 2018-04-21	rnd 1	type Standard	result 1	date 2018-04-21	rnd 5	type Standard	result 1
		Opponent Els, C (Christiaan)				Opponent Sloan, A (Alex)
2	4	Tournament 2018 Interregion Sedibeng vs Ekurhuleni				Tournament South African Junior Team Championships 2018
		date 2018-11-03	rnd 4	type Standard	result 1	date 2018-12-17	rnd 3	type Standard	result 1
		Opponent Van Biljon, J (Jessica)				Opponent Manadan, A (Anina)
3	3	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 3	type Standard	result 1	date 2018-08-24	rnd 5	type Standard	result 1
		Opponent Strydom, S (Stiaan)				Opponent Ncube, M (Melokuhle)

#	Games	Start				End
1	5	Tournament D7 Primary School League 2023				Tournament D7 Primary School League 2023
		date 2018-04-21	rnd 1	type Standard	result 1	date 2018-04-21	rnd 5	type Standard	result 1
		Opponent Els, C (Christiaan)				Opponent Sloan, A (Alex)
2	4	Tournament 2018 Interregion Sedibeng vs Ekurhuleni				Tournament South African Junior Team Championships 2018
		date 2018-11-03	rnd 4	type Standard	result 1	date 2018-12-17	rnd 3	type Standard	result 1
		Opponent Van Biljon, J (Jessica)				Opponent Manadan, A (Anina)
3	3	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 3	type Standard	result 1	date 2018-08-24	rnd 5	type Standard	result 1
		Opponent Strydom, S (Stiaan)				Opponent Ncube, M (Melokuhle)

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	Tabane ,G (Gomolemo)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Tabane ,G (Gomolemo)	2	873.4	448.4	2	877.4	448.4	0	0	0	0	0	0
2	Gebuza ,M (Mbali)	2	1	0	2	1	0	0	0	0	0	0	0
2	Gebuza ,M (Mbali)	2	904.9	904.9	2	899.6	904.9	0	0	0	0	0	0
3	Myburgh ,M (Matthew)	2	1	0	2	1	0	0	0	0	0	0	0
3	Myburgh ,M (Matthew)	2	911.6	911.6	2	892.7	911.6	0	0	0	0	0	0
4	Kapp ,JS (Jeandre Shawn)	2	1	0	2	1	0	0	0	0	0	0	0
4	Kapp ,JS (Jeandre Shawn)	2	957.8	957.8	2	970.4	957.8	0	0	0	0	0	0
5	Harmse ,H (Heinrich)	1	1	425	1	1	425	0	0	0	0	0	0
5	Harmse ,H (Heinrich)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Strydom ,S (Stiaan)	1	1	425	1	1	425	0	0	0	0	0	0
6	Strydom ,S (Stiaan)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Williams ,A (Anika)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Williams ,A (Anika)	1	1324.9	899.9	1	1304.4	899.9	0	0	0	0	0	0
8	Bezuidenhout ,C (Cornelius)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Bezuidenhout ,C (Cornelius)	1	622	197	1	622	197	0	0	0	0	0	0
9	Cronje ,E (Emile)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Cronje ,E (Emile)	1	1101.5	676.5	1	1102.7	676.5	0	0	0	0	0	0
10	Spamers ,V (Vinaldo)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Spamers ,V (Vinaldo)	1	1055	630	1	1071.1	630	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Coetzee, J (Jaco)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms