Chess South Africa Ratings Database

PLAYER PAGE

Personal

de Villiers, I (Isabelle)

Chess SA id

2160314888

FIDE id

Date of birth

2016-01-02 (U10)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-10-11

Personal details last changed

1900-01-01

Junior GPX Games

34.9

Junior GPX Points

1153.9

Item	Main	Standard	Rapid	Blitz
Rating	1330.2	1334.5	1273.8	1200
Raw rating	1330.2	1334.5	1273.8	1200
Weighted rating	1266.8	1260.3	1243.1	1200
Weighted performance	1244.1	0	1259.4	0
Floor	853.8	834.5	817	700
K-factor	36	36	36	36
Min/Max rating change allowed	137.7	136.9	149.3	165.8
Highest rating	1353.8 2025-09-30	1334.5 2025-08-01	1323.6 2025-09-30	1200 2025-03-01
Highest raw rating	1353.8 2025-09-30	1334.5 2025-08-01	1317 2025-09-30	1200 2025-03-01
Highest weighted rating	1266.8 2025-11-01	1233.9 2025-08-01	1243.1 2025-11-01	1200 2025-03-01
Highest weighted performance	1331.3 2025-09-01	0 1900-01-01	1323.6 2025-09-30	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1330.2	1334.5	1273.8	1200
Analysis
Rating	1330.2	1334.5	1273.8	1200
Raw rating	1330.2	1334.5	1273.8	1200
Weighted rating	1266.8	1260.3	1243.1
Weighted performance	1244.1	0	1259.4
K-factor	36	36	36	36
Floor	853.8	834.5	817	700
Max/Min rating change allowed	137.7	136.9	149.3	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	1330.2	1334.5	1273.8	1200
New weighted rating	1274	1268.2	1247	1200
New weighted performance	1236.8	0	1251.9	0
Temp new rating	1330.2	1334.5	1273.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1330.2	1334.5	1273.8	1200
New K-factor	36	36	36	36
New floor	853.8	834.5	817	700

Item	Main	Standard	Rapid
	0	0	0
	57	16	41
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	57	16	41

Games since
	Main 57	Standard 16		Rapid 41		Blitz 0
Gender	Female
Age group	U10
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2955		955		69
Female	576		225		20
U10	236		68		10
U10 Female	44		22		3
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	1214		611		74
Female	216		125		21
U10	105		56		17
U10 Female	18		11		4
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 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	57	34	59.65	82	1269.2	1351.2
Standard	16	11	68.75	159.4	1292.4	1451.7
Rapid	41	23	56.1	51.8	1260.1	1312
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	57	34	59.65	82	1269.2	1351.2
Standard	16	11	68.75	159.4	1292.4	1451.7
Rapid	41	23	56.1	51.8	1260.1	1312
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1330.2	1334.5	1273.8	1200
2025-09-30	1353.8	1334.5	1317	1200
2025-09-01	1346	1334.5	1290	1200
2025-08-01	1343.6	1334.5	1279.5	1200
2025-07-01	1323.1	1305.7	1279.5	1200
2025-06-01	1313.2	1305.7	1259.5	1200
2025-05-01	1262.5	1253	1241.3	1200
2025-04-01	1262.5	1253	1241.3	1200
2025-03-01	1221.2	1200	1241.3	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	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

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	UCT Open Chess Championship 2025 (U10)	2025-10-11	2025-10-11	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
2	Kingsway Chess Open 2025 (U10)	2025-09-20	2025-09-20	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
3	De Villiers PS 2025 (U10 Boys+Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
4	Cape Winelands Open 2025 (U10)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
5	Cape Winelands Queens 2025 (U9)	2025-06-21	2025-06-21	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
6	Western Cape Schools Individual Championship 2025 (U9 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
7	Brave Knights Rapid 2025 (U9)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
8	Hermanus Chess Club Open 2025 (U10)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	0	0	No	Analysis
9	Overberg Schools - PS Closed 2025 (U9 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
10	Overberg Schools - PS Trials (Region 1) 2025 (U9 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	4.5	Yes	Analysis
11	Curro Hermanus Summer Open 2025 (U9)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	UCT Open Chess Championship 2025 (U10)	2025-10-11	2025-10-11	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
2	Kingsway Chess Open 2025 (U10)	2025-09-20	2025-09-20	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
3	De Villiers PS 2025 (U10 Boys+Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
4	Cape Winelands Open 2025 (U10)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
5	Cape Winelands Queens 2025 (U9)	2025-06-21	2025-06-21	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
6	Western Cape Schools Individual Championship 2025 (U9 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
7	Brave Knights Rapid 2025 (U9)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
8	Hermanus Chess Club Open 2025 (U10)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	0	0	No	Analysis
9	Overberg Schools - PS Closed 2025 (U9 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
10	Overberg Schools - PS Trials (Region 1) 2025 (U9 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	4.5	Yes	Analysis
11	Curro Hermanus Summer Open 2025 (U9)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	2.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Harikisun, A (Aaheli)				Opponent Pretorius, P (Pippa)
2	3	Tournament Kingsway Chess Open 2025				Tournament Kingsway Chess Open 2025
		date 2025-09-20	rnd 2	type Rapid	result 1	date 2025-09-20	rnd 4	type Rapid	result 1
		Opponent Pienaar, A (Anchley)				Opponent Houghton, M (Matthew)
3	3	Tournament Cape Winelands Queens 2025				Tournament Cape Winelands Open 2025
		date 2025-06-21	rnd 5	type Rapid	result 1	date 2025-07-19	rnd 1	type Standard	result 1
		Opponent Lambrechts, M (Mila)				Opponent Moolman, J (Jacobus Johannes)

#	Games	Start				End
1	5	Tournament Overberg Schools - PS Closed 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-05-17	rnd 1	type Standard	result 1
		Opponent Harikisun, A (Aaheli)				Opponent Rasekgololo, B (Bandile)
2	2	Tournament Cape Winelands Open 2025				Tournament Cape Winelands Open 2025
		date 2025-07-19	rnd 3	type Standard	result 1	date 2025-07-19	rnd 4	type Standard	result 1
		Opponent Whyatt, C (Charles)				Opponent Edons, M (Mihandro)
3	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Cape Winelands Open 2025
		date 2025-05-18	rnd 6	type Standard	result 1	date 2025-07-19	rnd 1	type Standard	result 1
		Opponent Meer, M (Maryam Hasanah)				Opponent Moolman, J (Jacobus Johannes)

#	Games	Start				End
1	4	Tournament Cape Winelands Queens 2025				Tournament De Villiers PS 2025
		date 2025-06-21	rnd 5	type Rapid	result 1	date 2025-08-16	rnd 2	type Rapid	result 1
		Opponent Lambrechts, M (Mila)				Opponent Stevens, L (Legion)
2	3	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 0.5
		Opponent Rasekgololo, B (Bandile)				Opponent Marais, J (Janli)
3	2	Tournament Brave Knights Rapid 2025				Tournament Cape Winelands Queens 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-06-21	rnd 1	type Rapid	result 1
		Opponent Stevens, L (Legion)				Opponent Botha, C (Cari)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Harikisun, A (Aaheli)				Opponent Pretorius, P (Pippa)
2	3	Tournament Cape Winelands Queens 2025				Tournament Cape Winelands Open 2025
		date 2025-06-21	rnd 5	type Rapid	result 1	date 2025-07-19	rnd 1	type Standard	result 1
		Opponent Lambrechts, M (Mila)				Opponent Moolman, J (Jacobus Johannes)
3	2	Tournament De Villiers PS 2025				Tournament De Villiers PS 2025
		date 2025-08-16	rnd 1	type Rapid	result 1	date 2025-08-16	rnd 2	type Rapid	result 1
		Opponent Snyman, J (Jovanni)				Opponent Stevens, L (Legion)

#	Games	Start				End
1	5	Tournament Overberg Schools - PS Closed 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-05-17	rnd 1	type Standard	result 1
		Opponent Harikisun, A (Aaheli)				Opponent Rasekgololo, B (Bandile)
2	2	Tournament Cape Winelands Open 2025				Tournament Cape Winelands Open 2025
		date 2025-07-19	rnd 3	type Standard	result 1	date 2025-07-19	rnd 4	type Standard	result 1
		Opponent Whyatt, C (Charles)				Opponent Edons, M (Mihandro)
3	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Cape Winelands Open 2025
		date 2025-05-18	rnd 6	type Standard	result 1	date 2025-07-19	rnd 1	type Standard	result 1
		Opponent Meer, M (Maryam Hasanah)				Opponent Moolman, J (Jacobus Johannes)

#	Games	Start				End
1	4	Tournament Cape Winelands Queens 2025				Tournament De Villiers PS 2025
		date 2025-06-21	rnd 5	type Rapid	result 1	date 2025-08-16	rnd 2	type Rapid	result 1
		Opponent Lambrechts, M (Mila)				Opponent Stevens, L (Legion)
2	2	Tournament Brave Knights Rapid 2025				Tournament Cape Winelands Queens 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-06-21	rnd 1	type Rapid	result 1
		Opponent Stevens, L (Legion)				Opponent Botha, C (Cari)
3	2	Tournament Brave Knights Rapid 2025				Tournament Brave Knights Rapid 2025
		date 2025-05-03	rnd 2	type Rapid	result 1	date 2025-05-03	rnd 3	type Rapid	result 1
		Opponent Edons, E (Elijah)				Opponent Snyman, J (Jovanni)

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	Edons ,M (Mihandro)	2	1	0	1	1	425	1	0	-425	0	0	0
1	Edons ,M (Mihandro)	2	1406.7	1406.7	1	1405.2	1831.7	1	1271.9	981.7	0	0	0
2	Rasekgololo ,B (Bandile)	2	2	425	1	1	425	1	1	425	0	0	0
2	Rasekgololo ,B (Bandile)	2	1171.8	1596.8	1	1189.4	1596.8	1	1170.9	1596.8	0	0	0
3	Pretorius ,P (Pippa)	2	2	425	1	1	425	1	1	425	0	0	0
3	Pretorius ,P (Pippa)	2	1203.2	1628.2	1	1204.6	1628.2	1	1219.4	1628.2	0	0	0
4	Beukes ,B (Benjamin)	2	1	0	0	0	0	2	1	0	0	0	0
4	Beukes ,B (Benjamin)	2	1488.8	1488.8	0	0	0	2	1417.6	1488.8	0	0	0
5	Snyman ,J (Jovanni)	2	2	425	0	0	0	2	2	425	0	0	0
5	Snyman ,J (Jovanni)	2	1197.8	1622.8	0	0	0	2	1199.8	1622.8	0	0	0
6	Stevens ,L (Legion)	2	2	425	0	0	0	2	2	425	0	0	0
6	Stevens ,L (Legion)	2	1199.8	1624.8	0	0	0	2	1199.7	1624.8	0	0	0
7	Lourens ,L (Lihan)	2	0	-425	0	0	0	2	0	-425	0	0	0
7	Lourens ,L (Lihan)	2	1422.5	997.5	0	0	0	2	1382.2	997.5	0	0	0
8	Flores ,Z (Zhoe)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Flores ,Z (Zhoe)	1	1422	997	1	1434.2	997	0	0	0	0	0	0
9	Viljoen ,F (Frida)	1	1	425	1	1	425	0	0	0	0	0	0
9	Viljoen ,F (Frida)	1	1200.8	1625.8	1	1201.3	1625.8	0	0	0	0	0	0
10	Mngqingo ,L (Linathi)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Mngqingo ,L (Linathi)	1	1196	771	1	1151.5	771	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

de Villiers, I (Isabelle)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms