Chess South Africa Ratings Database

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Personal

Du Preez, A (Alet)

Chess SA id

2120138439

FIDE id

534009663

Date of birth

2012-10-23 (U16)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-12-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1353.2	1319.3	1374	1200
Raw rating	1353.2	1319.3	1373.3	1200
Weighted rating	1340.4	1301.5	1374	1200
Weighted performance	1331.6	1304.7	1288.5	0
Floor	898.6	851.7	902.5	700
K-factor	36	36	32	36
Min/Max rating change allowed	133.3	139.9	129.5	165.8
Highest rating	1414.1 2025-09-30	1351.7 2025-09-30	1402.5 2025-07-01	1200 2018-10-01
Highest raw rating	1398.6 2025-09-30	1351.7 2025-09-30	1402.5 2025-07-01	1200 2024-03-01
Highest weighted rating	1371.1 2025-04-01	1324.5 2025-04-01	1371.6 2025-11-01	1200 2018-10-01
Highest weighted performance	1414.1 2025-09-30	1349.1 2025-09-30	1388.9 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0.6	0
New rating	1353.2	1319.3	1374.6	1200
Analysis
Rating	1353.2	1319.3	1374	1200
Raw rating	1353.2	1319.3	1373.3	1200
Weighted rating	1340.4	1301.5	1374
Weighted performance	1331.6	1304.7	1288.5
K-factor	36	36	32	36
Floor	898.6	851.7	902.5	700
Max/Min rating change allowed	133.3	139.9	129.5	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	1353.2	1319.3	1373.3	1200
New weighted rating	1342.5	1304.2	1374.6	1200
New weighted performance	1322.6	1295.6	1279.7	0
Temp new rating	1353.2	1319.3	1374.6	1200
Temp new rating +/-	0	0	0.6	0
Final new rating +/-	0	0	0.6	0
New rating	1353.2	1319.3	1374.6	1200
New K-factor	36	36	32	36
New floor	898.6	851.7	902.5	700

Item	Main	Standard	Rapid
	0	0	0
	79	31	48
	47	37	10
	51	22	29
	41	21	20
	0	0	0
History	218	111	107

Games since
	Main 126	Standard 68		Rapid 58		Blitz 0
Gender	Female
Age group	U14
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2380		733		43
Female	411		156		13
U14	397		125		8
U14 Female	97		39		4
Standard
	RSA		Province		Region
Overall	2623		740		39
Female	484		178		11
U14	457		131		9
U14 Female	114		45		4
Rapid
	RSA		Province		Region
Overall	652		338		31
Female	89		50		7
U14	129		74		8
U14 Female	25		14		3
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 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	79	44	55.7	48.4	1297	1345.4
Standard	31	15	48.39	-13.7	1314.8	1301.1
Rapid	48	29	60.42	88.5	1285.5	1374
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	218	115	52.75	23.4	1262.8	1286.2
Standard	111	57.5	51.8	15.3	1261.2	1276.5
Rapid	107	57.5	53.74	31.8	1264.4	1296.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1353.2	1319.3	1373.3	1200
2025-11-30	1382.8	1351.7	1373.3	1200
2025-11-01	1382.8	1351.7	1373.3	1200
2025-09-30	1398.6	1351.7	1392.8	1200
2025-09-01	1382.1	1317.5	1392.8	1200
2025-08-01	1312	1274.1	1359.3	1200
2025-07-01	1324.6	1272.8	1402.5	1200
2025-06-01	1308.6	1269.8	1397.9	1200
2025-05-01	1303	1266.7	1381.2	1200
2025-04-01	1371.1	1311.4	1381.2	1200
2025-03-01	1340.9	1268.7	1381.2	1200
2025-02-01	1290.7	1268.7	1356.4	1200
2025-01-01	1283.4	1277.3	1356.4	1200
2024-12-01	1326.6	1324.5	1356.4	1200
2024-11-01	1326.6	1324.5	1356.4	1200
2024-10-01	1326.6	1324.5	1356.4	1200
2024-09-01	1321.8	1278.1	1356.4	1200
2024-11-01	1321.8	1278.1	1356.4	1200
2024-07-01	1306	1249.3	1356.4	1200
2024-06-01	1306	1249.3	1356.4	1200
2024-05-01	1315.6	1245.7	1356.4	1200
2024-04-01	1315.6	1245.7	1356.4	1200
2024-03-01	1277.4	1215.5	1325.2	1200
2024-02-01	1277.4	1215.5	1325.2	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	2025 Mzansi Inter Provincial Team Championships (U14 Girls)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	2	0	Yes	Analysis
2	Curro Hermanus Spring Open 2025 (U13)	2025-10-18	2025-10-18	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
3	Western Cape Schools - Top Schools 2025 (U13 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	3.5	Yes	Analysis
4	De Villiers PS 2025 (U14 Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
5	Overberg Top Schools 2025 (U9-U13 Girls)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
6	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	2.5	Yes	Analysis
7	Cape Winelands Queens 2025 (U13)	2025-06-21	2025-06-21	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
8	Western Cape Schools Individual Championship 2025 (U13 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	3	1	Yes	Analysis
9	Brave Knights Rapid 2025 (U13)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
10	South African Junior Closed Chess Championships 2025 (U14 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	1.5	Yes	Analysis
11	Overberg Schools - PS Closed 2025 (U13 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
12	Overberg Schools - PS Trials (Region 1) 2025 (U13 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
13	Laerskool Welgemoed Rapid 2025 (U14)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
14	Curro Hermanus Summer Open 2025 (U13)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	3.5	Yes	Analysis
15	Marie Delport Memorial 2025 (U14 Girls)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	5	2	Yes	Analysis
16	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Girls Combined)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	2	Yes	Analysis
17	Overberg GP Invitational Day 2 2024 (B)	2024-09-27	2024-09-27	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
18	Overberg GP Invitational Day 1 2024 (B)	2024-09-26	2024-09-26	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
19	Western Cape Top Schools Championship 2024 (U13 Girls)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	3.5	Yes	Analysis
20	Overberg Schools - Top Schools 2024 (U9-U15 Girls)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
21	Western Cape PS Individuals Championship 2024 (U13 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
22	Overberg Schools - PS Closed 2024 (U13 Girls)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
23	Overberg Schools - PS Trials Region 3 2024 (U13 Girls)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	3.5	Yes	Analysis
24	Overberg Open Rapid 2024 (U13)	2024-01-27	2024-01-27	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
25	Bonnievale Open Rapid 2023 (U12)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
26	Western Cape Top Schools 2023 (U11 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
27	Overberg Top Schools 2023 (U11)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
28	Curro Durbanville Chess Open Rapid 2023 (U12)	2023-07-15	2023-07-15	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
29	GPCA Rapid 2023 (U12)	2023-06-24	2023-06-24	Rapid	Cape Town (WCT)	7	6	1	Yes	Analysis
30	Western Cape PS Individuals 2023 (U11 Girls)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
31	Overberg School Chess Closed Tournament 2023 (U11 Girls)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
32	Overberg Primary School Trials (Region 2)	2023-02-24	2023-03-10	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
33	Overberg Schools Open Tournament 2023 (U12)	2023-02-11	2023-02-11	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
34	George Open 2022 (D)	2022-12-03	2022-12-03	Standard	Eden (WEG)	5	4	2	Yes	Analysis
35	Mossel Bay Open 2022 (C)	2022-10-01	2022-10-01	Rapid	Eden (WEG)	5	4	1.5	Yes	Analysis
36	Curro Durbanville Chess Open Rapid 2022 (U12)	2022-07-02	2022-07-02	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
37	WP Closed 2022 (U12)	2022-06-16	2022-06-16	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
38	Stellenberg Chess Championship 2022 (U12)	2022-06-25	2022-06-25	Rapid	Cape Town (WCT)	6	5	1	Yes	Analysis
39	Western Cape Schools 2022 (U11 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
40	OCF Open 2022 (U12)	2022-04-09	2022-04-09	Rapid	Overberg (WOS)	5	5	1.5	Yes	Analysis
41	Overberg Primary Schools Closed 2022 (U11 Girls)	2022-03-12	2022-03-12	Standard	Overberg (WOS)	5	5	3	Yes	Analysis

#	Games	Start				End
1	8	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Otto, K (Karlien)				Opponent Collins, E (Esme)
2	6	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2024-05-04	rnd 1	type Standard	result 1
		Opponent Rock, M (Mieke)				Opponent Arries, G (Geroneeze)
3	5	Tournament Overberg Open Rapid 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-01-27	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 3	type Rapid	result 0.5
		Opponent Temmers, L (Luke)				Opponent Buhr, G (Gretchen)

#	Games	Start				End
1	5	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Tayizoni, D (Deborah)				Opponent Collins, E (Esme)
2	5	Tournament Overberg Schools - PS Closed 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-03-16	rnd 1	type Standard	result 1	date 2024-05-04	rnd 1	type Standard	result 1
		Opponent Van Den Berg, P (Petru)				Opponent Arries, G (Geroneeze)
3	5	Tournament George Open 2022				Tournament Overberg School Chess Closed Tournament 2023
		date 2022-12-03	rnd 4	type Standard	result 1	date 2023-03-25	rnd 3	type Standard	result 1
		Opponent Johnson, A (Angel-Lincoln)				Opponent Van Der Merwe, E (Emily)

#	Games	Start				End
1	5	Tournament Overberg Open Rapid 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-01-27	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 3	type Rapid	result 0.5
		Opponent Temmers, L (Luke)				Opponent Buhr, G (Gretchen)
2	4	Tournament Brave Knights Rapid 2025				Tournament Cape Winelands Queens 2025
		date 2025-05-03	rnd 4	type Rapid	result 1	date 2025-06-21	rnd 1	type Rapid	result 1
		Opponent Riaz, R (Rummaan)				Opponent Afrika, T (Tashnique)
3	4	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Brave Knights Rapid 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-05-03	rnd 1	type Rapid	result 1
		Opponent Otto, K (Karlien)				Opponent Van Der Westhuizen, E (Erik)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament De Villiers PS 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-16	rnd 3	type Rapid	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Nel, Z (Zoe)				Opponent Bester, C (Cady Erin Lamar)
2	4	Tournament Overberg Top Schools 2025				Tournament De Villiers PS 2025
		date 2025-08-02	rnd 2	type Standard	result 1	date 2025-08-16	rnd 1	type Rapid	result 1
		Opponent Tshota, E (Enkosi)				Opponent Diedericks, S (Shardonique)
3	4	Tournament Brave Knights Rapid 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-03	rnd 4	type Rapid	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Riaz, R (Rummaan)				Opponent De Klerk, M (Miekie)

#	Games	Start				End
1	5	Tournament George Open 2022				Tournament Overberg School Chess Closed Tournament 2023
		date 2022-12-03	rnd 4	type Standard	result 1	date 2023-03-25	rnd 3	type Standard	result 1
		Opponent Johnson, A (Angel-Lincoln)				Opponent Van Der Merwe, E (Emily)
2	4	Tournament Overberg Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-02	rnd 2	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Tshota, E (Enkosi)				Opponent Bester, C (Cady Erin Lamar)
3	3	Tournament Overberg GP Invitational Day 1 2024				Tournament Overberg GP Invitational Day 2 2024
		date 2024-09-26	rnd 5	type Standard	result 1	date 2024-09-27	rnd 2	type Standard	result 1
		Opponent Davids, J (Jordan)				Opponent Otto, K (Karlien)

#	Games	Start				End
1	4	Tournament Brave Knights Rapid 2025				Tournament Cape Winelands Queens 2025
		date 2025-05-03	rnd 4	type Rapid	result 1	date 2025-06-21	rnd 1	type Rapid	result 1
		Opponent Riaz, R (Rummaan)				Opponent Afrika, T (Tashnique)
2	4	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Brave Knights Rapid 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-05-03	rnd 1	type Rapid	result 1
		Opponent Otto, K (Karlien)				Opponent Van Der Westhuizen, E (Erik)
3	4	Tournament Overberg Open Rapid 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-01-27	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 2	type Rapid	result 1
		Opponent Temmers, L (Luke)				Opponent Van Der Westhuizen, M (Mika)

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	Otto ,J (Johanne)	7	4.5	121.4	6	3.5	70.8	1	1	425	0	0	0
1	Otto ,J (Johanne)	7	1093.6	1215	6	1087.9	1164.4	1	1140	1518.6	0	0	0
2	Stevens ,DA (Danielle-Ann)	6	1	-283.3	2	0	-425	4	1	-212.5	0	0	0
2	Stevens ,DA (Danielle-Ann)	6	1367.7	1084.4	2	1207.4	942.7	4	1346.3	1155.2	0	0	0
3	Van Der Linde ,L (Luandi)	5	0.5	-340	4	0.5	-318.8	1	0	-425	0	0	0
3	Van Der Linde ,L (Luandi)	5	1366.6	1026.6	4	1412.9	1047.8	1	1200	941.6	0	0	0
4	Otto ,K (Karlien)	5	5	425	3	3	425	2	2	425	0	0	0
4	Otto ,K (Karlien)	5	1173.6	1598.6	3	1168.2	1598.6	2	1204.3	1598.6	0	0	0
5	Davids ,J (Jordan)	4	4	425	2	2	425	2	2	425	0	0	0
5	Davids ,J (Jordan)	4	1151	1576	2	1057.7	1576	2	1268.9	1576	0	0	0
6	Klopper ,E (Elzaan)	4	3	212.5	2	1	0	2	2	425	0	0	0
6	Klopper ,E (Elzaan)	4	1429.2	1641.7	2	1445.2	1429.2	2	1372.3	1854.2	0	0	0
7	Ntontelo ,K (Khazimla)	3	0.5	-283.3	2	0.5	-212.5	1	0	-425	0	0	0
7	Ntontelo ,K (Khazimla)	3	1467.6	1184.3	2	1501.4	1255.1	1	1236	1042.6	0	0	0
8	Barnard ,C (Charel)	3	2	141.7	2	1	0	1	1	425	0	0	0
8	Barnard ,C (Charel)	3	1266.5	1408.2	2	1213.2	1266.5	1	1332.4	1691.5	0	0	0
9	Wilson ,EM (Emlyn Marissa)	3	0	-425	1	0	-425	2	0	-425	0	0	0
9	Wilson ,EM (Emlyn Marissa)	3	1392	967	1	1336.2	967	2	1337.6	967	0	0	0
10	Buhr ,G (Gretchen)	3	2	141.7	1	1	425	2	1	0	0	0	0
10	Buhr ,G (Gretchen)	3	1210.9	1352.6	1	1163.6	1635.9	2	1175.8	1210.9	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Du Preez, A (Alet)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms