Chess South Africa Ratings Database

PLAYER PAGE

Personal

Nortje, D (Dell-Maree)

Chess SA id

209078334

FIDE id

Date of birth

2009-03-18 (U18)

Gender

Female

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	1516.9	1485.1	1263.5	672
Raw rating	1516.9	1485.1	1263.5	672
Weighted rating	1516.8	1485	1263.5	672
Weighted performance	1010.1	997.1	614.6	0
Floor	1069.4	1042.6	777.6	500
K-factor	32	32	36	40
Min/Max rating change allowed	105.6	110.5	151.5	351.8
Highest rating	1585.2 2023-02-01	1558.1 2023-02-01	1277.6 2021-10-01	1200 2018-02-01
Highest raw rating	1569.4 2023-03-01	1542.6 2023-03-01	1277.6 2021-10-01	674.4 2018-02-01
Highest weighted rating	1569.4 2024-09-01	1542.6 2024-10-01	1277.6 2025-02-01	674.4 2024-11-01
Highest weighted performance	1585.2 2023-02-01	1558.1 2023-02-01	1255.1 2019-07-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1516.9	1485.1	1263.5	672
Analysis
Rating	1516.9	1485.1	1263.5	672
Raw rating	1516.9	1485.1	1263.5	672
Weighted rating	1516.8	1485	1263.5
Weighted performance	1010.1	997.1	614.6
K-factor	32	32	36	40
Floor	1069.4	1042.6	777.6	500
Max/Min rating change allowed	105.6	110.5	151.5	351.8
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	1516.9	1485.1	1263.5	672
New weighted rating	1516.8	1485	1263.5	672
New weighted performance	1009.6	996.6	614.2	0
Temp new rating	1516.9	1485.1	1263.5	672
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1516.9	1485.1	1263.5	672
New K-factor	32	32	36	40
New floor	1069.4	1042.6	777.6	500

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	16	16	0	0
	25	20	5	0
	10	0	10	0
History	216	143	54	19

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U18
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 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	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	136	102	75	212.5	1118.5	1331
Standard	88	69.5	78.98	246.3	1111.5	1357.8
Rapid	42	30.5	72.62	192.3	1128.2	1320.4
Blitz	6	2	33.33	-141.7	1154.1	1012.4

Date	Main	Standard	Rapid	Blitz
2025-09-30	1516.9	1485.1	1263.5	672
2025-09-01	1516.9	1485.1	1263.5	672
2025-08-01	1516.9	1485.1	1263.5	672
2025-07-01	1516.9	1485.1	1263.5	672
2025-06-01	1516.9	1485.1	1263.5	672
2025-05-01	1516.9	1485.1	1263.5	672
2025-04-01	1516.9	1485.1	1263.5	672
2025-03-01	1516.9	1485.1	1263.5	672
2025-02-01	1516.9	1485.1	1263.5	672
2025-01-01	1516.8	1485	1263.5	672
2024-12-01	1516.8	1485	1263.5	672
2024-11-01	1516.8	1485	1263.5	672
2024-10-01	1516.8	1485	1263.5	672
2024-09-01	1516.8	1485	1263.5	672
2024-08-01	1516.8	1485	1263.5	672
2024-07-01	1516.8	1485	1263.5	672
2024-06-01	1516.8	1485	1263.5	672
2024-08-01	1516.8	1485	1263.5	672
2024-04-01	1516.8	1485	1263.5	672
2024-03-01	1516.8	1485	1263.5	672
2024-02-01	1516.8	1485	1263.5	672
2024-01-01	1516.8	1485	1263.5	672
2023-12-01	1516.8	1485	1263.5	672
2023-11-01	1516.8	1485	1263.5	672

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 (U15 Girls)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
2	Cape Winelands Schools Prestige 2023 (U15 Girls)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
3	Cape Winelands Schools Chess - Trials 1 2023 (U15 Girls)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	5	Yes	Analysis
4	Western Cape Top Schools 2022 (U13 Girls)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
5	Cape Winelands Schools Top Schools 2022 (U13 Girls)	2022-08-27	2022-08-27	Standard	Cape Winelands (WCW)	5	4	4	Yes	Analysis
6	Western Cape Schools 2022 (U13 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
7	Cape Winelands Schools 2022 (U13 Girls)	2022-03-12	2022-03-12	Standard	Cape Winelands (WCW)	5	5	5	Yes	Analysis
8	Worcester Schools Trials 2022 (U13 Girls)	2022-02-19	2022-02-19	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
9	Western Cape Schools Championship 2021 (U13 Girls)	2021-10-02	2021-10-02	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis
10	Cape Winelands Schools Closed 2021 (U13 Girls)	2021-09-24	2021-09-24	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
11	Cape Winelands Schools Trials 1 2020 (U11 Girls)	2020-02-08	2020-02-08	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
12	Western Cape Top Schools 2019 (U11 Girls)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
13	Cape Winelands Schools - Top Schools 2019 (U11+U13 Girls)	2019-07-27	2019-07-27	Rapid	Cape Winelands (WCW)	5	4	3	Yes	Analysis
14	Western Cape Schools Individuals 2019 (U11 Girls)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	4	Yes	Analysis
15	Cape Winelands Schools Closed 2019 (U11 Girls)	2019-03-16	2019-03-17	Standard	Cape Winelands (WCW)	7	7	7	Yes	Analysis
16	CW Schools Open 2019 (U11 Girls)	2019-02-02	2019-02-02	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
17	South African Junior Blitz 2018 (U10)	2018-12-19	2018-12-19	Blitz	4 Knights (4K)	7	6	2	Yes	Analysis
18	South African Junior Team Championships 2018 (U10 Girls)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	6	5	Yes	Analysis
19	Western Cape Top Schools 2018 (U9+U11 Girls)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	4	2	Yes	Analysis
20	Stellenberg Youth Chess Champs 2018 (D)	2018-06-23	2018-06-23	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
21	Western Cape Schools Individuals 2018 (U9 Girls)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	5	Yes	Analysis
22	Crossroads Open Chess Championship 2018 (C)	2018-04-27	2018-04-29	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
23	Cape Winelands Schools Trials 1 2018 (U9 Girls)	2018-03-03	2018-03-03	Rapid	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
24	Cape Winelands Schools Prestige 2018 (U9 Girls)	2018-03-24	2018-03-25	Standard	Cape Winelands (WCW)	7	7	6.5	Yes	Analysis
25	North Boland Trials 2018 (U9 Girls)	2018-02-17	2018-02-17	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis

#	Games	Start				End
1	19	Tournament Western Cape Schools 2022				Tournament Cape Winelands Schools Prestige 2023
		date 2022-05-28	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Roos, A (Aleza)				Opponent Broodryk, X (Xanlie)
2	12	Tournament CW Schools Open 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-05-18	rnd 1	type Standard	result 1
		Opponent Londen, T (Tamia)				Opponent De Bruin, E (Elrise)
3	12	Tournament Cape Winelands Schools Trials 1 2018				Tournament Crossroads Open Chess Championship 2018
		date 2018-03-03	rnd 3	type Rapid	result 1	date 2018-04-27	rnd 1	type Standard	result 1
		Opponent Ntlahla, A (Anathi)				Opponent Gatya, L (Lutho)

#	Games	Start				End
1	19	Tournament Western Cape Schools 2022				Tournament Cape Winelands Schools Prestige 2023
		date 2022-05-28	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Roos, A (Aleza)				Opponent Broodryk, X (Xanlie)
2	8	Tournament Cape Winelands Schools Closed 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-03-16	rnd 1	type Standard	result 1	date 2019-05-18	rnd 1	type Standard	result 1
		Opponent Amos, K (Kelly)				Opponent De Bruin, E (Elrise)
3	8	Tournament Cape Winelands Schools Prestige 2018				Tournament Crossroads Open Chess Championship 2018
		date 2018-03-24	rnd 1	type Standard	result 1	date 2018-04-27	rnd 1	type Standard	result 1
		Opponent Johnson, L (Lakeisha)				Opponent Gatya, L (Lutho)

#	Games	Start				End
1	6	Tournament CW Schools Open 2019				Tournament Cape Winelands Schools - Top Schools 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-07-27	rnd 2	type Rapid	result 1
		Opponent Londen, T (Tamia)				Opponent Damonse, D (Danelle)
2	5	Tournament Cape Winelands Schools Trials 1 2018				Tournament CW Schools Open 2019
		date 2018-03-03	rnd 3	type Rapid	result 1	date 2019-02-02	rnd 1	type Rapid	result 1
		Opponent Ntlahla, A (Anathi)				Opponent Amas, K (Kelly)
3	4	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Closed 2021
		date 2020-02-08	rnd 5	type Rapid	result 1	date 2021-09-24	rnd 2	type Rapid	result 1
		Opponent Botma, I (Inke)				Opponent Samuels, T (Tatum)

#	Games	Start				End
1	2	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 4	type Blitz	result 1	date 2018-12-19	rnd 5	type Blitz	result 1
		Opponent Fouche, H (Heinrich)				Opponent De Vasconcelos, T (Tiaana)

#	Games	Start				End
1	19	Tournament Western Cape Schools 2022				Tournament Cape Winelands Schools Prestige 2023
		date 2022-05-28	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Roos, A (Aleza)				Opponent Broodryk, X (Xanlie)
2	12	Tournament CW Schools Open 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-05-18	rnd 1	type Standard	result 1
		Opponent Londen, T (Tamia)				Opponent De Bruin, E (Elrise)
3	9	Tournament Worcester Schools Trials 2022				Tournament Western Cape Schools 2022
		date 2022-02-19	rnd 4	type Rapid	result 1	date 2022-05-28	rnd 2	type Standard	result 1
		Opponent Swart, C (Charnel)				Opponent Van Der Vyver, M (Michae)

#	Games	Start				End
1	19	Tournament Western Cape Schools 2022				Tournament Cape Winelands Schools Prestige 2023
		date 2022-05-28	rnd 4	type Standard	result 1	date 2023-03-11	rnd 2	type Standard	result 1
		Opponent Roos, A (Aleza)				Opponent Broodryk, X (Xanlie)
2	8	Tournament Cape Winelands Schools Closed 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-03-16	rnd 1	type Standard	result 1	date 2019-05-18	rnd 1	type Standard	result 1
		Opponent Amos, K (Kelly)				Opponent De Bruin, E (Elrise)
3	7	Tournament Cape Winelands Schools 2022				Tournament Western Cape Schools 2022
		date 2022-03-12	rnd 1	type Standard	result 1	date 2022-05-28	rnd 2	type Standard	result 1
		Opponent Booysen, K (Kayden)				Opponent Van Der Vyver, M (Michae)

#	Games	Start				End
1	6	Tournament CW Schools Open 2019				Tournament Cape Winelands Schools - Top Schools 2019
		date 2019-02-02	rnd 3	type Rapid	result 1	date 2019-07-27	rnd 2	type Rapid	result 1
		Opponent Londen, T (Tamia)				Opponent Damonse, D (Danelle)
2	4	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Closed 2021
		date 2020-02-08	rnd 5	type Rapid	result 1	date 2021-09-24	rnd 2	type Rapid	result 1
		Opponent Botma, I (Inke)				Opponent Samuels, T (Tatum)
3	4	Tournament Cape Winelands Schools - Top Schools 2019				Tournament Cape Winelands Schools Trials 1 2020
		date 2019-07-27	rnd 5	type Rapid	result 1	date 2020-02-08	rnd 3	type Rapid	result 1
		Opponent Mente, L (Limi)				Opponent Kirchner, T (Tatum)

#	Games	Start				End
1	2	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 4	type Blitz	result 1	date 2018-12-19	rnd 5	type Blitz	result 1
		Opponent Fouche, H (Heinrich)				Opponent De Vasconcelos, T (Tiaana)

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	Crotz ,K (Kirsten)	8	6	212.5	4	2	0	4	4	425	0	0	0
1	Crotz ,K (Kirsten)	8	1003.8	1216.3	4	920.6	1003.8	4	899.7	1428.8	0	0	0
2	Roos ,A (Aleza)	6	5.5	354.2	4	3.5	318.8	2	2	425	0	0	0
2	Roos ,A (Aleza)	6	864.4	1218.6	4	840	1183.2	2	732.2	1289.4	0	0	0
3	Erasmus ,A (Anneke)	5	3	85	2	2	425	3	1	-141.7	0	0	0
3	Erasmus ,A (Anneke)	5	1391.1	1476.1	2	1346.3	1816.1	3	1285.4	1249.5	0	0	0
4	Buis ,J (Joane)	4	3	212.5	3	2	141.7	1	1	425	0	0	0
4	Buis ,J (Joane)	4	1225.8	1438.3	3	1228.9	1367.4	1	1154.6	1650.8	0	0	0
5	Groenewald ,A (Ancha)	4	2	0	3	2	141.7	1	0	-425	0	0	0
5	Groenewald ,A (Ancha)	4	995.5	995.5	3	1014.4	1137.2	1	597.6	570.5	0	0	0
6	Johnson ,L (Lakeisha)	4	4	425	2	2	425	2	2	425	0	0	0
6	Johnson ,L (Lakeisha)	4	1276.5	1701.5	2	1345.2	1701.5	2	1191	1701.5	0	0	0
7	Xetu ,A (Abulele)	3	3	425	3	3	425	0	0	0	0	0	0
7	Xetu ,A (Abulele)	3	1205.9	1630.9	3	1153.7	1630.9	0	0	0	0	0	0
8	De Bruin ,E (Elrise)	3	2	141.7	2	2	425	1	0	-425	0	0	0
8	De Bruin ,E (Elrise)	3	1250.4	1392.1	2	1204.4	1675.4	1	1266.6	825.4	0	0	0
9	Minnaar ,A (Amelia)	3	2	141.7	2	1	0	1	1	425	0	0	0
9	Minnaar ,A (Amelia)	3	1258.9	1400.6	2	1273.1	1258.9	1	1200	1683.9	0	0	0
10	Ntlahla ,A (Anathi)	3	2	141.7	2	1	0	1	1	425	0	0	0
10	Ntlahla ,A (Anathi)	3	1173.2	1314.8	2	1068.4	1173.2	1	1172.4	1598.2	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Nortje, D (Dell-Maree)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms