Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetsee, JE (Johan Emile)

Chess SA id

105052368

FIDE id

Date of birth

2005-03-08 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-04-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1370.5	1309.7	1293.4	624.6
Raw rating	1370.5	1309.7	1293.4	624.6
Weighted rating	1370.5	1309.7	1293.4	624.6
Weighted performance	946.8	836.6	714.5	0
Floor	885.1	814.7	793.4	500
K-factor	36	36	36	40
Min/Max rating change allowed	130	141.8	145.2	376.4
Highest rating	1389.5 2023-03-01	1314.7 2023-04-01	1341.1 2018-09-01	1200 2024-02-01
Highest raw rating	1385.1 2023-04-01	1314.7 2023-04-01	1293.4 2024-02-01	624.6 2024-02-01
Highest weighted rating	1385.1 2025-02-01	1314.7 2025-02-01	1293.4 2025-02-01	624.6 2024-11-01
Highest weighted performance	1389.5 2023-03-01	1271.4 2023-04-01	1341.1 2018-09-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1370.5	1309.7	1293.4	624.6
Analysis
Rating	1370.5	1309.7	1293.4	624.6
Raw rating	1370.5	1309.7	1293.4	624.6
Weighted rating	1370.5	1309.7	1293.4
Weighted performance	946.8	836.6	714.5
K-factor	36	36	36	40
Floor	885.1	814.7	793.4	500
Max/Min rating change allowed	130	141.8	145.2	376.4
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	1370.5	1309.7	1293.4	624.6
New weighted rating	1370.5	1309.7	1293.4	624.6
New weighted performance	946.3	836.1	714	0
Temp new rating	1370.5	1309.7	1293.4	624.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1370.5	1309.7	1293.4	624.6
New K-factor	36	36	36	40
New floor	885.1	814.7	793.4	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	21	16	5
	5	0	5
	5	0	5
History	142	90	52

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	100	64	64	119	1186	1305
Standard	59	36	61.02	93.6	1172	1265.6
Rapid	41	28	68.29	155.5	1206.3	1361.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1370.5	1309.7	1293.4	624.6
2025-09-01	1370.5	1309.7	1293.4	624.6
2025-08-01	1370.5	1309.7	1293.4	624.6
2025-07-01	1370.5	1309.7	1293.4	624.6
2025-06-01	1370.5	1309.7	1293.4	624.6
2025-05-01	1370.5	1309.7	1293.4	624.6
2025-04-01	1370.5	1309.7	1293.4	624.6
2025-03-01	1370.5	1309.7	1293.4	624.6
2025-02-01	1370.5	1309.7	1293.4	624.6
2025-01-01	1370.5	1309.7	1293.4	624.6
2024-12-01	1370.5	1309.7	1293.4	624.6
2024-11-01	1370.5	1309.7	1293.4	624.6
2024-10-01	1370.5	1309.7	1293.4	624.6
2024-09-01	1370.5	1309.7	1293.4	624.6
2024-08-01	1370.5	1309.7	1293.4	624.6
2024-07-01	1370.5	1309.7	1293.4	624.6
2024-06-01	1370.5	1309.7	1293.4	624.6
2024-08-01	1370.5	1309.7	1293.4	624.6
2024-04-01	1370.5	1309.7	1293.4	624.6
2024-03-01	1370.5	1309.7	1293.4	624.6
2024-02-01	1370.5	1309.7	1293.4	624.6
2024-01-01	1370.5	1309.7	1293.4	624.6
2023-12-01	1370.5	1309.7	1293.4	624.6
2023-11-01	1370.5	1309.7	1293.4	624.6

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	Western Cape HS Individuals 2023 (U19 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
2	Cape Winelands Schools Prestige 2023 (U19 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
3	Langeberg Schools Chess Trials 2023 (U19 Boys+Girls)	2023-02-11	2023-02-11	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
4	Cape Winelands Schools Chess - Trials 1 2023 (U19 Boys)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
5	Lanfeberg Schools Chess Trials 2022 (U18)	2022-02-26	2022-02-26	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
6	Cape Winelands Schools Trials 2021 (U18 Boys)	2021-10-16	2021-10-16	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
7	Cape Winelands Schools Trials 1 2020 (U15 Boys)	2020-02-15	2020-02-15	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
8	2019 South African Junior Team Championships (U16D)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	5.5	Yes	Analysis
9	Robertson Strategema 2019 (U15)	2019-10-05	2019-10-05	Rapid	Cape Winelands (WCW)	5	4	3	Yes	Analysis
10	Western Cape Schools Individuals 2019 (U15 Boys)	2019-05-04	2019-05-05	Standard	Eden (WEG)	6	6	3	Yes	Analysis
11	Cape Winelands Open 2019 (B)	2019-04-27	2019-04-27	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
12	Cape Winelands Schools Closed 2019 (U15 Boys)	2019-03-16	2019-03-17	Standard	Cape Winelands (WCW)	7	7	5	Yes	Analysis
13	Strategema Robertson 2018 (U13)	2018-09-08	2018-09-08	Rapid	Cape Winelands (WCW)	7	5	5	Yes	Analysis
14	Western Cape Schools Individuals 2018 (U13 Boys)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	3	Yes	Analysis
15	Inter Regional 2018 (U14 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	1	Yes	Analysis
16	Cape Winelands Schools Trials 1 2018 (U13 Boys)	2018-03-03	2018-03-03	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
17	Cape Winelands Schools Prestige 2018 (U13 Boys)	2018-03-24	2018-03-25	Standard	Cape Winelands (WCW)	7	7	5	Yes	Analysis
18	North Boland Trials 2018 (U13 Boys)	2018-02-17	2018-02-17	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis

#	Games	Start				End
1	14	Tournament Western Cape Schools Individuals 2018				Tournament Cape Winelands Schools Closed 2019
		date 2018-05-19	rnd 2	type Standard	result 0.5	date 2019-03-16	rnd 4	type Standard	result 1
		Opponent Palmer, C (Cheslin)				Opponent Pienaar, E (Eduardt)
2	6	Tournament Robertson Strategema 2019				Tournament 2019 South African Junior Team Championships
		date 2019-10-05	rnd 5	type Rapid	result 1	date 2020-01-06	rnd 5	type Standard	result 1
		Opponent Philander, G (Gemon)				Opponent Rieck, R (Ruan)
3	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Kotze, I (Izak)				Opponent Cupido, A (Aiden)

#	Games	Start				End
1	9	Tournament Western Cape Schools Individuals 2018				Tournament Cape Winelands Schools Closed 2019
		date 2018-05-19	rnd 2	type Standard	result 0.5	date 2019-03-16	rnd 4	type Standard	result 1
		Opponent Palmer, C (Cheslin)				Opponent Pienaar, E (Eduardt)
2	5	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 1	type Standard	result 1	date 2020-01-06	rnd 5	type Standard	result 1
		Opponent Van Der Westhuizen, GJH (Gerhardus)				Opponent Rieck, R (Ruan)
3	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Kotze, I (Izak)				Opponent Cupido, A (Aiden)

#	Games	Start				End
1	7	Tournament Strategema Robertson 2018				Tournament Robertson Strategema 2019
		date 2018-09-08	rnd 1	type Rapid	result 1	date 2019-10-05	rnd 2	type Rapid	result 1
		Opponent Jack, C (Chivano)				Opponent Solomon, C (Cameron)
2	4	Tournament Lanfeberg Schools Chess Trials 2022				Tournament Langeberg Schools Chess Trials 2023
		date 2022-02-26	rnd 4	type Rapid	result 0.5	date 2023-02-11	rnd 2	type Rapid	result 1
		Opponent Mitchell, R (Raynard)				Opponent Michaels, Z (Zaan)
3	3	Tournament Cape Winelands Schools Trials 2021				Tournament Lanfeberg Schools Chess Trials 2022
		date 2021-10-16	rnd 5	type Rapid	result 1	date 2022-02-26	rnd 2	type Rapid	result 1
		Opponent Botha, M (Marnus)				Opponent Van Tonder, R (Riette)

No games found.

#	Games	Start				End

#	Games	Start				End
1	10	Tournament Western Cape Schools Individuals 2018				Tournament Cape Winelands Schools Closed 2019
		date 2018-05-20	rnd 6	type Standard	result 1	date 2019-03-16	rnd 4	type Standard	result 1
		Opponent Williams, V (Vogan)				Opponent Pienaar, E (Eduardt)
2	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Kotze, I (Izak)				Opponent Cupido, A (Aiden)
3	3	Tournament Langeberg Schools Chess Trials 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-11	rnd 5	type Rapid	result 1	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Takow, S (Sayed-Ali)				Opponent Maunga, W (Wayne)

#	Games	Start				End
1	5	Tournament Western Cape Schools Individuals 2018				Tournament Cape Winelands Schools Closed 2019
		date 2018-05-20	rnd 6	type Standard	result 1	date 2019-03-16	rnd 4	type Standard	result 1
		Opponent Williams, V (Vogan)				Opponent Pienaar, E (Eduardt)
2	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Kotze, I (Izak)				Opponent Cupido, A (Aiden)
3	3	Tournament 2019 South African Junior Team Championships				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2020-01-08	rnd 7	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Kwon, H (Hyun)				Opponent Maunga, W (Wayne)

#	Games	Start				End
1	7	Tournament Strategema Robertson 2018				Tournament Robertson Strategema 2019
		date 2018-09-08	rnd 1	type Rapid	result 1	date 2019-10-05	rnd 2	type Rapid	result 1
		Opponent Jack, C (Chivano)				Opponent Solomon, C (Cameron)
2	3	Tournament Lanfeberg Schools Chess Trials 2022				Tournament Langeberg Schools Chess Trials 2023
		date 2022-02-26	rnd 5	type Rapid	result 1	date 2023-02-11	rnd 2	type Rapid	result 1
		Opponent Koen, C (Cj)				Opponent Michaels, Z (Zaan)
3	3	Tournament Cape Winelands Schools Trials 2021				Tournament Lanfeberg Schools Chess Trials 2022
		date 2021-10-16	rnd 5	type Rapid	result 1	date 2022-02-26	rnd 2	type Rapid	result 1
		Opponent Botha, M (Marnus)				Opponent Van Tonder, R (Riette)

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	Segelaar ,G (Geriant)	5	1	-255	1	1	425	4	0	-425	0	0	0
1	Segelaar ,G (Geriant)	5	1374.6	1119.6	1	1173.2	1799.6	4	1305.8	949.6	0	0	0
2	Pienaar ,E (Eduardt)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Pienaar ,E (Eduardt)	3	1198.1	1339.8	3	1174.4	1339.8	0	0	0	0	0	0
3	Van Rooyen ,D (De Villiers)	3	3	425	1	1	425	2	2	425	0	0	0
3	Van Rooyen ,D (De Villiers)	3	1125.5	1550.5	1	1200	1550.5	2	1101.4	1550.5	0	0	0
4	Minnaar ,E (Ethan)	2	1	0	2	1	0	0	0	0	0	0	0
4	Minnaar ,E (Ethan)	2	1267.5	1267.5	2	1201.6	1267.5	0	0	0	0	0	0
5	Cronje ,Z (Zander)	2	2	425	2	2	425	0	0	0	0	0	0
5	Cronje ,Z (Zander)	2	1233.2	1658.2	2	1228.2	1658.2	0	0	0	0	0	0
6	Van Der Merwe ,A (Alexander)	2	0	-425	1	0	-425	1	0	-425	0	0	0
6	Van Der Merwe ,A (Alexander)	2	1841.1	1416.1	1	1982.7	1416.1	1	1577.6	1416.1	0	0	0
7	Beukes ,JC (Jaeden Caeleb)	2	1	0	1	1	425	1	0	-425	0	0	0
7	Beukes ,JC (Jaeden Caeleb)	2	983.4	983.4	1	976.2	1408.4	1	883.4	558.4	0	0	0
8	Mercuur ,L (Logan)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Mercuur ,L (Logan)	2	1128	703	1	886	703	1	1048	703	0	0	0
9	Mitchell ,R (Raynard)	2	0.5	-212.5	0	0	0	2	0.5	-212.5	0	0	0
9	Mitchell ,R (Raynard)	2	1285.8	1073.2	0	0	0	2	1251.6	1073.2	0	0	0
10	Meyer ,J (Jordan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Meyer ,J (Jordan)	1	1138.3	1563.3	1	1156.2	1563.3	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

Coetsee, JE (Johan Emile)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms