Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koen, E (Emma)

Chess SA id

2180161835

FIDE id

Date of birth

2018-02-13 (U8)

Gender

Female

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1233.4

Item	Main	Standard	Rapid	Blitz
Rating	1342.9	1385	1195.6	1200
Raw rating	1342.9	1385	1195.6	1200
Weighted rating	1306.8	1368.7	1195.2	1200
Weighted performance	1263.8	1254.2	1017.6	0
Floor	913.3	1023.2	700	700
K-factor	32	32	36	36
Min/Max rating change allowed	135.3	127.4	166.9	165.8
Highest rating	1413.3 2025-07-01	1523.2 2025-04-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1413.3 2025-07-01	1523.2 2025-04-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1306.8 2025-09-30	1368.7 2025-09-30	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1395.2 2025-07-01	1523.2 2024-07-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1342.9	1385	1195.6	1200
Analysis
Rating	1342.9	1385	1195.6	1200
Raw rating	1342.9	1385	1195.6	1200
Weighted rating	1306.8	1368.7	1195.2
Weighted performance	1263.8	1254.2	1017.6
K-factor	32	32	36	36
Floor	913.3	1023.2	700	700
Max/Min rating change allowed	135.3	127.4	166.9	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	1342.9	1385	1195.6	1200
New weighted rating	1313	1375	1195.2	1200
New weighted performance	1263.4	1253.8	1017.2	0
Temp new rating	1342.9	1385	1195.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1342.9	1385	1195.6	1200
New K-factor	32	32	36	36
New floor	913.3	1023.2	700	700

Item	Main	Standard	Rapid
	0	0	0
	63	45	18
	35	24	11
	0	0	0
	0	0	0
	0	0	0
History	98	69	29

Games since
	Main 98	Standard 69		Rapid 29		Blitz 0
Gender	Female
Age group	U8
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2742		872		358
Female	513		213		74
U8	29		11		6
U8 Female	7		2		2
Standard
	RSA		Province		Region
Overall	2212		602		273
Female	391		139		59
U8	30		11		2
U8 Female	7		3		1
Rapid
	RSA		Province		Region
Overall	1654		839		308
Female	378		212		50
U8	19		12		6
U8 Female	9		4		2
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U8	-1		-1		-1
U8 Female	-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	63	39	61.9	101.2	1249.8	1351
Standard	45	32	71.11	179.4	1265.6	1445
Rapid	18	7	38.89	-94.4	1210.5	1116.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	98	57	58.16	69.4	1233.9	1303.3
Standard	69	45	65.22	129.3	1242.7	1372
Rapid	29	12	41.38	-73.3	1213.1	1139.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1342.9	1385	1195.6	1200
2025-09-01	1403.2	1478.7	1195.6	1200
2025-08-01	1413.3	1512.7	1195.6	1200
2025-07-01	1413.3	1512.7	1195.6	1200
2025-06-01	1403.9	1523	1195.6	1200
2025-05-01	1336	1461.7	1195.4	1200
2025-04-01	1351.2	1523.2	1191.5	1200
2025-03-01	1347.8	1448.9	1199	1200
2025-02-01	1304.6	1348	1196	1200
2025-01-01	1223.2	1242.1	1191.7	1200
2024-12-01	1223.2	1242.1	1191.7	1200
2024-11-01	1223.2	1242.1	1191.7	1200
2024-10-01	1217.7	1228.8	1191.7	1200
2024-09-01	1217.7	1228.8	1191.7	1200
2024-08-01	1217.7	1228.8	1191.7	1200
2024-07-01	1206	1212.2	1200	1200
2024-06-01	1206	1212.2	1200	1200
2024-08-01	1176.4	1177.3	1200	1200
2024-04-01	1176.4	1177.3	1200	1200
2024-03-01	1168.3	1164	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	Western Cape Schools - Top Schools 2025 (U9 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	0.5	Yes	Analysis
2	CT Metro District East Top Schools Chess 2025 (U9+U11 Girls)	2025-08-02	2025-08-03	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
3	Helderberg Chess Club Open 2025 (U7 Girls)	2025-06-07	2025-06-07	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U7 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	6	Yes	Analysis
5	South African Junior Closed Chess Championships 2025 (U8 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	4.5	Yes	Analysis
6	Cape Town Open Chess Festival 2025 (Junior Rapid)	2025-03-21	2025-03-21	Rapid	Cape Town (WCT)	6	6	1	Yes	Analysis
7	CT Metro Schools Individual Closed 2025 (U7 Girls)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	5	5	Yes	Analysis
8	Cape of Good Hope Open 2025 (U8)	2025-02-22	2025-02-22	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
9	CT Metro District East Schools Chess Individuals Trials 2025 (U7 Girls)	2025-02-01	2025-02-01	Standard	Cape Town (WCT)	6	4	4	Yes	Analysis
10	Helderberg Chess Club PS Development Tournament 2025 (U7)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	5	Yes	Analysis
11	2025 Kraaifontein Open Chess Championships (Rapid U10)	2025-01-04	2025-01-04	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U9 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	0.5	Yes	Analysis
2	CT Metro District East Top Schools Chess 2025 (U9+U11 Girls)	2025-08-02	2025-08-03	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
3	Helderberg Chess Club Open 2025 (U7 Girls)	2025-06-07	2025-06-07	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U7 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	6	Yes	Analysis
5	South African Junior Closed Chess Championships 2025 (U8 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	4.5	Yes	Analysis
6	Cape Town Open Chess Festival 2025 (Junior Rapid)	2025-03-21	2025-03-21	Rapid	Cape Town (WCT)	6	6	1	Yes	Analysis
7	CT Metro Schools Individual Closed 2025 (U7 Girls)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	5	5	Yes	Analysis
8	Cape of Good Hope Open 2025 (U8)	2025-02-22	2025-02-22	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
9	CT Metro District East Schools Chess Individuals Trials 2025 (U7 Girls)	2025-02-01	2025-02-01	Standard	Cape Town (WCT)	6	4	4	Yes	Analysis
10	Helderberg Chess Club PS Development Tournament 2025 (U7)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	5	Yes	Analysis
11	2025 Kraaifontein Open Chess Championships (Rapid U10)	2025-01-04	2025-01-04	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
12	Laerskool Welgemoed Rapid 2024 (U8)	2024-10-19	2024-10-19	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
13	Grant East Annual Primary School Invitational Chess Tournament 2024 (U7)	2024-10-05	2024-10-05	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
14	CT Metro District East Top Schools Chess 2024 (U9 Mixed)	2024-07-27	2024-07-28	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
15	Curro Durbanville Chess Rapid Open 2024 (Beginner)	2024-07-13	2024-07-13	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
16	Western Cape PS Individuals Championship 2024 (U7 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
17	Cape Town Metro Schools Chess Closed Individuals 2024 (U7 Girls)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	5	4	2	Yes	Analysis
18	CT District East Schools Chess Individuals Trails 2024 (U7+U9 Girls)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	4	1	Yes	Analysis

#	Games	Start				End
1	10	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament Cape of Good Hope Open 2025
		date 2025-01-25	rnd 1	type Standard	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent de Wet, L (Lila)				Opponent Chittiprolu, V (Vishal)
2	7	Tournament Western Cape Schools Individual Championship 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-06-07	rnd 1	type Standard	result 1
		Opponent Kock, R (Reese)				Opponent Marais, E (Emilie)
3	6	Tournament Cape of Good Hope Open 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-03-02	rnd 6	type Standard	result 1
		Opponent Makwelo, I (Iminathi)				Opponent Gubuza, A (Ayama)

#	Games	Start				End
1	16	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament South African Junior Closed Chess Championships 2025
		date 2025-01-25	rnd 1	type Standard	result 1	date 2025-03-31	rnd 2	type Standard	result 1
		Opponent de Wet, L (Lila)				Opponent Mabugu, R (Refilwe)
2	7	Tournament Western Cape Schools Individual Championship 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-06-07	rnd 1	type Standard	result 1
		Opponent Kock, R (Reese)				Opponent Marais, E (Emilie)
3	3	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 5	type Standard	result 1
		Opponent Beukes, A (Ami)				Opponent Akemdien, J (Jo)

#	Games	Start				End
1	2	Tournament 2025 Kraaifontein Open Chess Championships				Tournament 2025 Kraaifontein Open Chess Championships
		date 2025-01-04	rnd 4	type Rapid	result 1	date 2025-01-04	rnd 5	type Rapid	result 1
		Opponent Van Wyk, A (Alonzo)				Opponent Bessesen, S (Sindre)
2	2	Tournament Curro Durbanville Chess Rapid Open 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-07-13	rnd 6	type Rapid	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Arora, J (Jashan)				Opponent Harrington, S (Sawyer)
3	1	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 5	type Rapid	result 1	date 2025-03-21	rnd 5	type Rapid	result 1
		Opponent Varadharajan, A (Akilan)				Opponent Varadharajan, A (Akilan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	10	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament Cape of Good Hope Open 2025
		date 2025-01-25	rnd 1	type Standard	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent de Wet, L (Lila)				Opponent Chittiprolu, V (Vishal)
2	7	Tournament Western Cape Schools Individual Championship 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-06-07	rnd 1	type Standard	result 1
		Opponent Kock, R (Reese)				Opponent Marais, E (Emilie)
3	6	Tournament Cape of Good Hope Open 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-03-02	rnd 6	type Standard	result 1
		Opponent Makwelo, I (Iminathi)				Opponent Gubuza, A (Ayama)

#	Games	Start				End
1	16	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament South African Junior Closed Chess Championships 2025
		date 2025-01-25	rnd 1	type Standard	result 1	date 2025-03-31	rnd 2	type Standard	result 1
		Opponent de Wet, L (Lila)				Opponent Mabugu, R (Refilwe)
2	7	Tournament Western Cape Schools Individual Championship 2025				Tournament Helderberg Chess Club Open 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-06-07	rnd 1	type Standard	result 1
		Opponent Kock, R (Reese)				Opponent Marais, E (Emilie)
3	3	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 5	type Standard	result 1
		Opponent Beukes, A (Ami)				Opponent Akemdien, J (Jo)

#	Games	Start				End
1	2	Tournament 2025 Kraaifontein Open Chess Championships				Tournament 2025 Kraaifontein Open Chess Championships
		date 2025-01-04	rnd 4	type Rapid	result 1	date 2025-01-04	rnd 5	type Rapid	result 1
		Opponent Van Wyk, A (Alonzo)				Opponent Bessesen, S (Sindre)
2	2	Tournament Curro Durbanville Chess Rapid Open 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-07-13	rnd 6	type Rapid	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Arora, J (Jashan)				Opponent Harrington, S (Sawyer)
3	1	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 5	type Rapid	result 1	date 2025-03-21	rnd 5	type Rapid	result 1
		Opponent Varadharajan, A (Akilan)				Opponent Varadharajan, A (Akilan)

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	de Wet ,L (Lila)	8	8	425	8	8	425	0	0	0	0	0	0
1	de Wet ,L (Lila)	8	1227	1652	8	1241.2	1652	0	0	0	0	0	0
2	de Wet ,Z (Zoey)	5	4	255	5	4	255	0	0	0	0	0	0
2	de Wet ,Z (Zoey)	5	1198.4	1453.4	5	1197.6	1453.4	0	0	0	0	0	0
3	Klopper ,E (Elbe)	4	0	-425	4	0	-425	0	0	0	0	0	0
3	Klopper ,E (Elbe)	4	1291.6	866.6	4	1301.4	866.6	0	0	0	0	0	0
4	Kirthan ,V (Venya)	3	0	-425	2	0	-425	1	0	-425	0	0	0
4	Kirthan ,V (Venya)	3	1240.9	815.9	2	1285.2	815.9	1	1148.9	815.9	0	0	0
5	Bessesen ,S (Sindre)	3	2	141.7	1	1	425	2	1	0	0	0	0
5	Bessesen ,S (Sindre)	3	1212.3	1354	1	1200	1637.3	2	1230.8	1212.3	0	0	0
6	Cetywayo ,S (Siyahluma)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Cetywayo ,S (Siyahluma)	2	1486.6	1061.6	2	1483.7	1061.6	0	0	0	0	0	0
7	Hodgson ,N (Neva)	2	2	425	2	2	425	0	0	0	0	0	0
7	Hodgson ,N (Neva)	2	1171.5	1596.5	2	1160.9	1596.5	0	0	0	0	0	0
8	De Bruyn ,K (Kayla)	2	1	0	2	1	0	0	0	0	0	0	0
8	De Bruyn ,K (Kayla)	2	1329.6	1329.6	2	1296.4	1329.6	0	0	0	0	0	0
9	Malherbe ,A (Aasha)	2	1	0	1	1	425	1	0	-425	0	0	0
9	Malherbe ,A (Aasha)	2	1229.8	1229.8	1	1239.9	1654.8	1	1200	804.8	0	0	0
10	Baker ,J (Jessica)	2	1	0	1	1	425	1	0	-425	0	0	0
10	Baker ,J (Jessica)	2	1154.3	1154.3	1	1196.8	1579.3	1	1200	729.3	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Koen, E (Emma)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms