Chess South Africa Ratings Database

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Personal

Koen, E (Etienne)

Chess SA id

1850307332

FIDE id

Date of birth

1985-03-07 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1311.6	1284.7	1318.5	1200
Raw rating	1311.6	1284.7	1318.5	1200
Weighted rating	1280.3	1256	1283.2	1200
Weighted performance	1237.8	0	0	0
Floor	812.1	784.7	818.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	141.4	147	140.1	165.8
Highest rating	1312.1 2025-03-01	1284.7 2025-07-01	1342.9 2024-11-01	1200 2024-10-01
Highest raw rating	1312.1 2025-03-01	1284.7 2025-07-01	1318.5 2025-03-01	1200 2024-10-01
Highest weighted rating	1270.1 2025-08-01	1247.5 2025-08-01	1318.5 2024-10-01	1200 2024-10-01
Highest weighted performance	1312 2025-03-01	1200 2024-10-01	1342.9 2024-11-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1311.6	1284.7	1318.5	1200
Analysis
Rating	1311.6	1284.7	1318.5	1200
Raw rating	1311.6	1284.7	1318.5	1200
Weighted rating	1280.3	1256	1283.2
Weighted performance	1237.8	0	0
K-factor	36	36	36	36
Floor	812.1	784.7	818.5	700
Max/Min rating change allowed	141.4	147	140.1	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	1311.6	1284.7	1318.5	1200
New weighted rating	1284.9	1259.9	1288.2	1200
New weighted performance	1237.3	0	0	0
Temp new rating	1311.6	1284.7	1318.5	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1311.6	1284.7	1318.5	1200
New K-factor	36	36	36	36
New floor	812.1	784.7	818.5	700

Item	Main	Standard	Rapid
	0	0	0
	19	6	13
	18	6	12
	0	0	0
	0	0	0
	0	0	0
History	37	12	25

Games since
	Main 37	Standard 12		Rapid 25		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	930		476		208
Male	765		384		181
Adult	188		72		43
Adult Male	182		71		43
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	19	9	47.37	-22.4	1389.5	1367.1
Standard	6	3	50	0	1310	1310
Rapid	13	6	46.15	-32.7	1426.2	1393.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	37	21	56.76	57.4	1320.1	1377.5
Standard	12	7	58.33	70.8	1318.1	1388.9
Rapid	25	14	56	51	1321	1372
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1311.6	1284.7	1318.5	1200
2025-09-01	1311.6	1284.7	1318.5	1200
2025-08-01	1311.6	1284.7	1318.5	1200
2025-07-01	1311.6	1284.7	1318.5	1200
2025-06-01	1312.1	1277.2	1318.5	1200
2025-05-01	1312.1	1277.2	1318.5	1200
2025-04-01	1312.1	1277.2	1318.5	1200
2025-03-01	1312.1	1277.2	1318.5	1200
2025-02-01	1292.4	1277.2	1272.2	1200
2025-01-01	1293.9	1277.2	1273.7	1200
2024-12-01	1293.9	1277.2	1273.7	1200
2024-11-01	1244.6	1200	1273.7	1200
2024-10-01	1229.8	1200	1238.8	1200
2024-09-01	1229.8	1200	1238.8	1200
2024-08-01	1229.8	1200	1238.8	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	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
2023-11-01	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	Helderberg Chess Club Open 2025 (B)	2025-06-07	2025-06-08	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
2	Cape of Good Hope Open 2025 (Open Rapid)	2025-02-22	2025-02-22	Rapid	Cape Town (WCT)	7	7	4	Yes	Analysis
3	2025 Kraaifontein Open Chess Championships (Rapid Open)	2025-01-05	2025-01-05	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Helderberg Chess Club Open 2025 (B)	2025-06-07	2025-06-08	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
2	Cape of Good Hope Open 2025 (Open Rapid)	2025-02-22	2025-02-22	Rapid	Cape Town (WCT)	7	7	4	Yes	Analysis
3	2025 Kraaifontein Open Chess Championships (Rapid Open)	2025-01-05	2025-01-05	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
4	Helderberg Chess Club Open 2024 (B)	2024-11-09	2024-11-10	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
5	Laerskool Welgemoed Rapid 2024 (Parents)	2024-10-19	2024-10-19	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
6	Curro Durbanville Chess Rapid Open 2024 (Parent)	2024-07-13	2024-07-13	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis

#	Games	Start				End
1	4	Tournament Laerskool Welgemoed Rapid 2024				Tournament Helderberg Chess Club Open 2024
		date 2024-10-19	rnd 4	type Rapid	result 1	date 2024-11-09	rnd 1	type Standard	result 1
		Opponent Du Plessis, B (Bennie)				Opponent Van Der Walt, R (Ricardo Cs)
2	3	Tournament Helderberg Chess Club Open 2024				Tournament Helderberg Chess Club Open 2024
		date 2024-11-09	rnd 3	type Standard	result 1	date 2024-11-10	rnd 5	type Standard	result 1
		Opponent De Silva, A (Alyssa)				Opponent Nakani, M (Milani)
3	2	Tournament Helderberg Chess Club Open 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-06-07	rnd 3	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Mudonhi, DT (Dylan)				Opponent Magwaza, G (Gilmore)

#	Games	Start				End
1	3	Tournament Helderberg Chess Club Open 2024				Tournament Helderberg Chess Club Open 2024
		date 2024-11-09	rnd 3	type Standard	result 1	date 2024-11-10	rnd 5	type Standard	result 1
		Opponent De Silva, A (Alyssa)				Opponent Nakani, M (Milani)
2	2	Tournament Helderberg Chess Club Open 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-06-07	rnd 3	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Mudonhi, DT (Dylan)				Opponent Magwaza, G (Gilmore)
3	1	Tournament Helderberg Chess Club Open 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-06-07	rnd 1	type Standard	result 1	date 2025-06-07	rnd 1	type Standard	result 1
		Opponent Rule, C (Calem)				Opponent Rule, C (Calem)

#	Games	Start				End
1	3	Tournament Laerskool Welgemoed Rapid 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-10-19	rnd 4	type Rapid	result 1	date 2024-10-19	rnd 6	type Rapid	result 1
		Opponent Du Plessis, B (Bennie)				Opponent Bessesen, S (Sigi)
2	2	Tournament Cape of Good Hope Open 2025				Tournament Cape of Good Hope Open 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Hong, D (Devon)				Opponent Shaw, O (Oliver)
3	2	Tournament 2025 Kraaifontein Open Chess Championships				Tournament 2025 Kraaifontein Open Chess Championships
		date 2025-01-05	rnd 4	type Rapid	result 1	date 2025-01-05	rnd 5	type Rapid	result 1
		Opponent Franks, T (Tyriq)				Opponent James, A (Ayden)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Laerskool Welgemoed Rapid 2024				Tournament Helderberg Chess Club Open 2024
		date 2024-10-19	rnd 4	type Rapid	result 1	date 2024-11-09	rnd 1	type Standard	result 1
		Opponent Du Plessis, B (Bennie)				Opponent Van Der Walt, R (Ricardo Cs)
2	3	Tournament Helderberg Chess Club Open 2024				Tournament Helderberg Chess Club Open 2024
		date 2024-11-09	rnd 3	type Standard	result 1	date 2024-11-10	rnd 5	type Standard	result 1
		Opponent De Silva, A (Alyssa)				Opponent Nakani, M (Milani)
3	2	Tournament Helderberg Chess Club Open 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-06-07	rnd 3	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Mudonhi, DT (Dylan)				Opponent Magwaza, G (Gilmore)

#	Games	Start				End
1	3	Tournament Helderberg Chess Club Open 2024				Tournament Helderberg Chess Club Open 2024
		date 2024-11-09	rnd 3	type Standard	result 1	date 2024-11-10	rnd 5	type Standard	result 1
		Opponent De Silva, A (Alyssa)				Opponent Nakani, M (Milani)
2	2	Tournament Helderberg Chess Club Open 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-06-07	rnd 3	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Mudonhi, DT (Dylan)				Opponent Magwaza, G (Gilmore)
3	1	Tournament Helderberg Chess Club Open 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-06-07	rnd 1	type Standard	result 1	date 2025-06-07	rnd 1	type Standard	result 1
		Opponent Rule, C (Calem)				Opponent Rule, C (Calem)

#	Games	Start				End
1	3	Tournament Laerskool Welgemoed Rapid 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-10-19	rnd 4	type Rapid	result 1	date 2024-10-19	rnd 6	type Rapid	result 1
		Opponent Du Plessis, B (Bennie)				Opponent Bessesen, S (Sigi)
2	2	Tournament Cape of Good Hope Open 2025				Tournament Cape of Good Hope Open 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Hong, D (Devon)				Opponent Shaw, O (Oliver)
3	2	Tournament 2025 Kraaifontein Open Chess Championships				Tournament 2025 Kraaifontein Open Chess Championships
		date 2025-01-05	rnd 4	type Rapid	result 1	date 2025-01-05	rnd 5	type Rapid	result 1
		Opponent Franks, T (Tyriq)				Opponent James, A (Ayden)

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	Magwaza ,G (Gilmore)	1	1	425	1	1	425	0	0	0	0	0	0
1	Magwaza ,G (Gilmore)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Olivier ,NF (Nico)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Olivier ,NF (Nico)	1	1241.6	816.6	1	1249.4	816.6	0	0	0	0	0	0
3	Van Der Walt ,R (Ricardo Cs)	1	1	425	1	1	425	0	0	0	0	0	0
3	Van Der Walt ,R (Ricardo Cs)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Isaacs ,T (Tyrique)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Isaacs ,T (Tyrique)	1	1393.4	968.4	1	1379.7	968.4	0	0	0	0	0	0
5	Choli ,T (Thimwa Angel)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Choli ,T (Thimwa Angel)	1	1381.9	956.9	1	1394.2	956.9	0	0	0	0	0	0
6	Van Der Linde ,L (Luandi)	1	1	425	1	1	425	0	0	0	0	0	0
6	Van Der Linde ,L (Luandi)	1	1471.4	1896.4	1	1493.2	1896.4	0	0	0	0	0	0
7	Adolf ,F (Feraydo)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Adolf ,F (Feraydo)	1	1373.5	948.5	1	1340.4	948.5	0	0	0	0	0	0
8	Shaw ,O (Oliver)	1	1	425	0	0	0	1	1	425	0	0	0
8	Shaw ,O (Oliver)	1	1457	1882	0	0	0	1	1430.6	1882	0	0	0
9	Johnson ,K (Kirstie)	1	1	425	0	0	0	1	1	425	0	0	0
9	Johnson ,K (Kirstie)	1	1168	1593	0	0	0	1	1200	1593	0	0	0
10	Samuels ,ER (Ethan)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Samuels ,ER (Ethan)	1	2007.6	1582.6	0	0	0	1	1987.3	1582.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Koen, E (Etienne)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms