Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koen, E (Emma)

Chess SA id

2180161835

FIDE id

Date of birth

2018-02-13 (U10)

Gender

Female

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1332.9	1385.7	1202.1	1200
Raw rating	1332.9	1385	1202.1	1200
Weighted rating	1322.4	1385.7	1196.1	1200
Weighted performance	1180.9	1213.1	1053.8	0
Floor	913.3	1023.2	702.1	700
K-factor	32	32	36	36
Min/Max rating change allowed	137.2	127.4	165.3	165.8
Highest rating	1413.3 2025-07-01	1523.2 2025-04-01	1202.1 2025-11-30	1200 2018-10-01
Highest raw rating	1413.3 2025-07-01	1523.2 2025-04-01	1202.1 2025-11-30	1200 2024-03-01
Highest weighted rating	1317.9 2025-11-30	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	4.5	0	0
New rating	1332.9	1390.2	1202.1	1200
Analysis
Rating	1332.9	1385.7	1202.1	1200
Raw rating	1332.9	1385	1202.1	1200
Weighted rating	1322.4	1385.7	1196.1
Weighted performance	1180.9	1213.1	1053.8
K-factor	32	32	36	36
Floor	913.3	1023.2	702.1	700
Max/Min rating change allowed	137.2	127.4	165.3	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	1332.9	1385	1202.1	1200
New weighted rating	1326.4	1390.2	1196.6	1200
New weighted performance	1172.9	1204.7	1046.4	0
Temp new rating	1332.9	1390.2	1202.1	1200
Temp new rating +/-	0	4.5	0	0
Final new rating +/-	0	4.5	0	0
New rating	1332.9	1390.2	1202.1	1200
New K-factor	32	32	36	36
New floor	913.3	1023.2	702.1	700

Item	Main	Standard	Rapid
	0	0	0
	67	45	22
	35	24	11
	0	0	0
	0	0	0
	0	0	0
History	102	69	33

Games since
	Main 102	Standard 69		Rapid 33		Blitz 0
Gender	Female
Age group	U8
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2924		942		399
Female	554		216		77
U8	36		17		6
U8 Female	10		5		2
Standard
	RSA		Province		Region
Overall	2262		621		296
Female	391		139		58
U8	29		12		3
U8 Female	6		3		1
Rapid
	RSA		Province		Region
Overall	1666		816		310
Female	363		195		44
U8	23		15		6
U8 Female	11		5		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	67	41	61.19	95.1	1248.8	1343.9
Standard	45	32	71.11	179.4	1265.6	1445
Rapid	22	9	40.91	-77.3	1214.3	1137
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	102	59	57.84	66.7	1233.8	1300.5
Standard	69	45	65.22	129.3	1242.7	1372
Rapid	33	14	42.42	-64.4	1215.3	1151
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1332.9	1385	1202.1	1200
2025-11-30	1332.9	1385	1202.1	1200
2025-11-01	1342.9	1385	1195.6	1200
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
2024-11-01	1217.7	1228.8	1191.7	1200
2024-07-01	1206	1212.2	1200	1200
2024-06-01	1206	1212.2	1200	1200
2024-05-01	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

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	Gordons Bay Primary Chess Championship 2025 (Open)	2025-10-25	2025-10-25	Rapid	Cape Town (WCT)	5	4	2	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U9 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	0.5	Yes	Analysis
3	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
4	Helderberg Chess Club Open 2025 (U7 Girls)	2025-06-07	2025-06-07	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
5	Western Cape Schools Individual Championship 2025 (U7 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	6	Yes	Analysis
6	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
7	Cape Town Open Chess Festival 2025 (Junior Rapid)	2025-03-21	2025-03-21	Rapid	Cape Town (WCT)	6	6	1	Yes	Analysis
8	CT Metro Schools Individual Closed 2025 (U7 Girls)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	5	5	Yes	Analysis
9	Cape of Good Hope Open 2025 (U8)	2025-02-22	2025-02-22	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
10	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
11	Helderberg Chess Club PS Development Tournament 2025 (U7)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	5	Yes	Analysis
12	2025 Kraaifontein Open Chess Championships (Rapid U10)	2025-01-04	2025-01-04	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
13	Laerskool Welgemoed Rapid 2024 (U8)	2024-10-19	2024-10-19	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
14	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
15	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
16	Curro Durbanville Chess Rapid Open 2024 (Beginner)	2024-07-13	2024-07-13	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
17	Western Cape PS Individuals Championship 2024 (U7 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
18	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
19	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	Hodgson ,N (Neva)	2	2	425	2	2	425	0	0	0	0	0	0
6	Hodgson ,N (Neva)	2	1171.5	1596.5	2	1160.9	1596.5	0	0	0	0	0	0
7	Cetywayo ,S (Siyahluma)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Cetywayo ,S (Siyahluma)	2	1486.6	1061.6	2	1483.7	1061.6	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	Baker ,J (Jessica)	2	1	0	1	1	425	1	0	-425	0	0	0
9	Baker ,J (Jessica)	2	1154.3	1154.3	1	1196.8	1579.3	1	1200	729.3	0	0	0
10	Malherbe ,A (Aasha)	2	1	0	1	1	425	1	0	-425	0	0	0
10	Malherbe ,A (Aasha)	2	1229.8	1229.8	1	1239.9	1654.8	1	1200	804.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Koen, E (Emma)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms