Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koen, E (Ethan)

Chess SA id

1060157589

FIDE id

Date of birth

2006-10-04 (U20)

Gender

Male

Region

Umgungunglovu (KUP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-06

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1459.9	1393.2	1358.7	1200
Raw rating	1459.9	1393.2	1358.7	1200
Weighted rating	1409.4	1364.5	1294	1200
Weighted performance	1359.8	1258.1	0	0
Floor	959.9	896.9	858.7	700
K-factor	32	36	36	36
Min/Max rating change allowed	114.5	125.9	132.3	165.8
Highest rating	1471 2024-09-01	1574.8 2024-05-01	1360.7 2024-04-01	1200 2018-10-01
Highest raw rating	1459.9 2025-09-30	1396.9 2024-10-01	1358.7 2025-09-30	1200 2024-02-01
Highest weighted rating	1409.4 2025-09-30	1351.3 2025-08-01	1294 2025-09-30	1200 2018-10-01
Highest weighted performance	1471 2024-09-01	1574.8 2024-05-01	1360.7 2024-04-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1459.9	1393.2	1358.7	1200
Analysis
Rating	1459.9	1393.2	1358.7	1200
Raw rating	1459.9	1393.2	1358.7	1200
Weighted rating	1409.4	1364.5	1294
Weighted performance	1359.8	1258.1	0
K-factor	32	36	36	36
Floor	959.9	896.9	858.7	700
Max/Min rating change allowed	114.5	125.9	132.3	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	1459.9	1393.2	1358.7	1200
New weighted rating	1416.6	1370.2	1300.2	1200
New weighted performance	1359.3	1257.6	0	0
Temp new rating	1459.9	1393.2	1358.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1459.9	1393.2	1358.7	1200
New K-factor	32	36	36	36
New floor	959.9	896.9	858.7	700

Item	Main	Standard	Rapid
	0	0	0
	6	0	6
	32	26	6
	13	6	7
	0	0	0
	0	0	0
History	51	32	19

Games since
	Main 44	Standard 32		Rapid 12		Blitz 0
Gender	Male
Age group	U20
Region	Umgungunglovu (KUP)
Province	KwaZulu Natal (KZ)
Main
	RSA		Province		Region
Overall	1565		108		1
Male	1323		98		1
U20	140		4		1
U20 Male	116		4		1
Standard
	RSA		Province		Region
Overall	2125		134		1
Male	1738		115		1
U20	184		7		1
U20 Male	146		6		1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	6	4.5	75	212.5	1430.8	1643.3
Standard	0	0	0	0	0	0
Rapid	6	4.5	75	212.5	1430.8	1643.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	51	34.5	67.65	150	1355.9	1505.9
Standard	32	21.5	67.19	146.1	1349.2	1495.3
Rapid	19	13	68.42	156.6	1367.2	1523.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1459.9	1393.2	1358.7	1200
2025-09-01	1431.1	1393.2	1292.5	1200
2025-08-01	1431.1	1393.2	1292.5	1200
2025-07-01	1431.1	1393.2	1292.5	1200
2025-06-01	1431.1	1393.2	1292.5	1200
2025-05-01	1431.1	1393.2	1292.5	1200
2025-04-01	1431.1	1393.2	1292.5	1200
2025-03-01	1431.1	1393.2	1292.5	1200
2025-02-01	1431.1	1393.2	1292.5	1200
2025-01-01	1431.1	1393.2	1292.5	1200
2024-12-01	1446.5	1396.9	1292.5	1200
2024-11-01	1446.5	1396.9	1292.5	1200
2024-10-01	1446.5	1396.9	1292.5	1200
2024-09-01	1352.8	1305.5	1292.5	1200
2024-08-01	1352.8	1305.5	1292.5	1200
2024-07-01	1352.8	1305.5	1292.5	1200
2024-06-01	1352.8	1305.5	1292.5	1200
2024-08-01	1282.9	1200	1292.5	1200
2024-04-01	1250.3	1200	1238.5	1200
2024-03-01	1250.3	1200	1238.5	1200
2024-02-01	1250.3	1200	1238.5	1200
2024-01-01	1250.3	1200	1238.5	1200
2023-12-01	1250.3	1200	1238.5	1200
2023-11-01	1250.3	1200	1238.5	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 KZN Provincial Trials (U20)	2025-09-06	2025-09-06	Rapid	Ethekwini (KED)	6	6	4.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 KZN Provincial Trials (U20)	2025-09-06	2025-09-06	Rapid	Ethekwini (KED)	6	6	4.5	Yes	Analysis
2	2024 SALGA KZN DSAC Games	2024-12-06	2024-12-08	Standard	Ethekwini (KED)	7	6	3	Yes	Analysis
3	2024 South Africa National Schools Chess Championship (U18 Boys)	2024-09-27	2024-09-28	Standard	Nelson Mandela Bay (ENM)	7	7	3.5	Yes	Analysis
4	2024 KZN Schools District Selections (U18 Boys)	2024-09-13	2024-09-15	Standard	Ethekwini (KED)	6	6	4	Yes	Analysis
5	Umgungundlovu Schools League 2024 (U18 Boys)	2024-05-17	2024-05-25	Standard	Umgungunglovu (KUP)	7	7	6.5	Yes	Analysis
6	Umgungundlovu Open 2024 (A)	2024-04-06	2024-04-06	Rapid	Umgungunglovu (KUP)	6	6	4	Yes	Analysis
7	2023 KZN SALGA Games Chess Tournament 2023	2023-12-08	2023-12-10	Standard	Ethekwini (KED)	7	6	4.5	Yes	Analysis
8	2023 KZN Winter Schools Selections (U18 Boys)	2023-06-24	2023-06-24	Rapid	Ethekwini (KED)	7	7	4.5	Yes	Analysis

#	Games	Start				End
1	11	Tournament Umgungundlovu Open 2024				Tournament 2024 KZN Schools District Selections
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2024-09-13	rnd 1	type Standard	result 1
		Opponent Shezi, S (Sbahle)				Opponent Khoza, B (Bongani)
2	7	Tournament 2024 SALGA KZN DSAC Games				Tournament 2025 KZN Provincial Trials
		date 2024-12-06	rnd 2	type Standard	result 0.5	date 2025-09-06	rnd 2	type Rapid	result 1
		Opponent Masondo, A (Aphiwe)				Opponent Gilmore, K (Keagan)
3	4	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 1	type Rapid	result 1	date 2023-06-24	rnd 4	type Rapid	result 1
		Opponent Singh, K (Kaylum)				Opponent Sibiya, ST (Simphiwe)

#	Games	Start				End
1	10	Tournament 2023 KZN SALGA Games Chess Tournament 2023				Tournament 2024 KZN Schools District Selections
		date 2023-12-10	rnd 6	type Standard	result 0.5	date 2024-09-13	rnd 1	type Standard	result 1
		Opponent Kazadi, E (Elisha)				Opponent Khoza, B (Bongani)
2	5	Tournament 2024 SALGA KZN DSAC Games				Tournament 2024 SALGA KZN DSAC Games
		date 2024-12-06	rnd 2	type Standard	result 0.5	date 2024-12-08	rnd 7	type Standard	result 1
		Opponent Masondo, A (Aphiwe)				Opponent Brahim, A (Amenallah)
3	3	Tournament 2024 South Africa National Schools Chess Championship				Tournament 2024 South Africa National Schools Chess Championship
		date 2024-09-27	rnd 3	type Standard	result 1	date 2024-09-28	rnd 5	type Standard	result 1
		Opponent Mahase, B (Bafokeng)				Opponent Munemo, T (Tadiwa)

#	Games	Start				End
1	5	Tournament Umgungundlovu Open 2024				Tournament 2025 KZN Provincial Trials
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2025-09-06	rnd 2	type Rapid	result 1
		Opponent Shezi, S (Sbahle)				Opponent Gilmore, K (Keagan)
2	4	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 1	type Rapid	result 1	date 2023-06-24	rnd 4	type Rapid	result 1
		Opponent Singh, K (Kaylum)				Opponent Sibiya, ST (Simphiwe)
3	3	Tournament 2025 KZN Provincial Trials				Tournament 2025 KZN Provincial Trials
		date 2025-09-06	rnd 4	type Rapid	result 1	date 2025-09-06	rnd 6	type Rapid	result 1
		Opponent Manyokolo, N (Nhlanhla)				Opponent Nyamukamba, J (Joel)

No games found.

#	Games	Start				End

#	Games	Start				End
1	9	Tournament Umgungundlovu Open 2024				Tournament Umgungundlovu Schools League 2024
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2024-05-25	rnd 6	type Standard	result 1
		Opponent Shezi, S (Sbahle)				Opponent Mkhize, S (Siyabonga)
2	4	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 1	type Rapid	result 1	date 2023-06-24	rnd 4	type Rapid	result 1
		Opponent Singh, K (Kaylum)				Opponent Sibiya, ST (Simphiwe)
3	3	Tournament 2025 KZN Provincial Trials				Tournament 2025 KZN Provincial Trials
		date 2025-09-06	rnd 4	type Rapid	result 1	date 2025-09-06	rnd 6	type Rapid	result 1
		Opponent Manyokolo, N (Nhlanhla)				Opponent Nyamukamba, J (Joel)

#	Games	Start				End
1	7	Tournament 2023 KZN SALGA Games Chess Tournament 2023				Tournament Umgungundlovu Schools League 2024
		date 2023-12-10	rnd 7	type Standard	result 1	date 2024-05-25	rnd 6	type Standard	result 1
		Opponent Ngwane, N (Njabulo)				Opponent Mkhize, S (Siyabonga)
2	3	Tournament 2024 South Africa National Schools Chess Championship				Tournament 2024 South Africa National Schools Chess Championship
		date 2024-09-27	rnd 3	type Standard	result 1	date 2024-09-28	rnd 5	type Standard	result 1
		Opponent Mahase, B (Bafokeng)				Opponent Munemo, T (Tadiwa)
3	3	Tournament 2023 KZN SALGA Games Chess Tournament 2023				Tournament 2023 KZN SALGA Games Chess Tournament 2023
		date 2023-12-08	rnd 1	type Standard	result 1	date 2023-12-09	rnd 4	type Standard	result 1
		Opponent Gilmore, K (Keagan)				Opponent Mnqondo, M (Mpumelelo)

#	Games	Start				End
1	4	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 1	type Rapid	result 1	date 2023-06-24	rnd 4	type Rapid	result 1
		Opponent Singh, K (Kaylum)				Opponent Sibiya, ST (Simphiwe)
2	3	Tournament 2025 KZN Provincial Trials				Tournament 2025 KZN Provincial Trials
		date 2025-09-06	rnd 4	type Rapid	result 1	date 2025-09-06	rnd 6	type Rapid	result 1
		Opponent Manyokolo, N (Nhlanhla)				Opponent Nyamukamba, J (Joel)
3	3	Tournament Umgungundlovu Open 2024				Tournament Umgungundlovu Open 2024
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2024-04-06	rnd 6	type Rapid	result 1
		Opponent Shezi, S (Sbahle)				Opponent Mkhulisi, M (Mbongeni)

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	Gumede ,A (Alwande)	4	2	0	1	0.5	0	3	1.5	0	0	0	0
1	Gumede ,A (Alwande)	4	1265.7	1265.7	1	1231.2	1265.7	3	1255.5	1265.7	0	0	0
2	Kazadi ,E (Elisha)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
2	Kazadi ,E (Elisha)	2	1460.8	1248.3	2	1449	1248.3	0	0	0	0	0	0
3	Gilmore ,K (Keagan)	2	2	425	1	1	425	1	1	425	0	0	0
3	Gilmore ,K (Keagan)	2	1283.7	1708.7	1	1200	1708.7	1	1355.9	1708.7	0	0	0
4	Mthembu ,C (Clive)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Mthembu ,C (Clive)	1	1496.6	1071.6	1	1490.4	1071.6	0	0	0	0	0	0
5	Mbhele ,A (Anele)	1	1	425	1	1	425	0	0	0	0	0	0
5	Mbhele ,A (Anele)	1	1222.3	1647.3	1	1200	1647.3	0	0	0	0	0	0
6	Mbatha ,A (Asanda)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Mbatha ,A (Asanda)	1	1480.8	1480.8	1	1458.6	1480.8	0	0	0	0	0	0
7	Sibhema ,O (Owethu)	1	1	425	1	1	425	0	0	0	0	0	0
7	Sibhema ,O (Owethu)	1	1204.1	1629.1	1	1200	1629.1	0	0	0	0	0	0
8	Munemo ,T (Tadiwa)	1	1	425	1	1	425	0	0	0	0	0	0
8	Munemo ,T (Tadiwa)	1	1601.3	2026.3	1	1605.8	2026.3	0	0	0	0	0	0
9	Brahim ,A (Amenallah)	1	1	425	1	1	425	0	0	0	0	0	0
9	Brahim ,A (Amenallah)	1	1366.1	1791.1	1	1391.2	1791.1	0	0	0	0	0	0
10	Khoza ,B (Bongani)	1	1	425	1	1	425	0	0	0	0	0	0
10	Khoza ,B (Bongani)	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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Personal

Koen, E (Ethan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms