Chess South Africa Ratings Database

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Personal

Van Der Merwe, Z (Zoe)

Chess SA id

2120149769

FIDE id

Date of birth

2012-04-18 (U14)

Gender

Female

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

17.7

Junior GPX Points

1106.4

Item	Main	Standard	Rapid	Blitz
Rating	1253.6	1213.7	1320.6	1200
Raw rating	1212.5	1145.1	1320.6	1200
Weighted rating	1253.6	1213.7	1281.7	1200
Weighted performance	1115.6	998.2	0	0
Floor	783.6	733.6	820.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	162.9	179.3	139.6	165.8
Highest rating	1283.6 2025-09-01	1233.6 2025-03-01	1320.6 2025-09-01	1200 2018-10-01
Highest raw rating	1283.6 2025-09-01	1233.6 2025-03-01	1320.6 2025-09-01	1200 2024-03-01
Highest weighted rating	1256 2025-09-01	1219 2025-08-01	1276.3 2025-09-01	1200 2018-10-01
Highest weighted performance	1229.2 2025-09-01	1228.1 2023-05-01	1296.4 2024-06-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-2.5	-5.6	0	0
New rating	1251.2	1208.1	1320.6	1200
Analysis
Rating	1253.6	1213.7	1320.6	1200
Raw rating	1212.5	1145.1	1320.6	1200
Weighted rating	1253.6	1213.7	1281.7
Weighted performance	1115.6	998.2	0
K-factor	36	36	36	36
Floor	783.6	733.6	820.6	700
Max/Min rating change allowed	162.9	179.3	139.6	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	1212.5	1145.1	1320.6	1200
New weighted rating	1251.2	1208.1	1286.7	1200
New weighted performance	1115.2	997.9	0	0
Temp new rating	1251.2	1208.1	1320.6	1200
Temp new rating +/-	-2.5	-5.6	0	0
Final new rating +/-	-2.5	-5.6	0	0
New rating	1251.2	1208.1	1320.6	1200
New K-factor	36	36	36	36
New floor	783.6	733.6	820.6	700

Item	Main	Standard	Rapid
	0	0	0
	20	15	5
	17	5	12
	15	14	1
	0	0	0
	0	0	0
History	52	34	18

Games since
	Main 37	Standard 20		Rapid 17		Blitz 0
Gender	Female
Age group	U14
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
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	20	9.5	47.5	-21.2	1228.9	1207.7
Standard	15	5.5	36.67	-113.3	1242.2	1128.8
Rapid	5	4	80	255	1189.2	1444.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	52	27	51.92	16.3	1228.1	1244.5
Standard	34	14.5	42.65	-62.5	1232.6	1170.1
Rapid	18	12.5	69.44	165.3	1219.7	1384.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1212.5	1145.1	1320.6	1200
2025-09-01	1283.6	1224.6	1320.6	1200
2025-08-01	1259.9	1224.6	1287.5	1200
2025-07-01	1259.9	1224.6	1287.5	1200
2025-06-01	1259.9	1224.6	1287.5	1200
2025-05-01	1259.9	1224.6	1287.5	1200
2025-04-01	1259.9	1224.6	1287.5	1200
2025-03-01	1272.2	1233.6	1287.5	1200
2025-02-01	1263.4	1214.7	1287.5	1200
2025-01-01	1263.4	1212.1	1287.5	1200
2024-12-01	1263.4	1212.1	1287.5	1200
2024-11-01	1263.4	1212.1	1287.5	1200
2024-10-01	1263.4	1212.1	1287.5	1200
2024-09-01	1263.4	1212.1	1287.5	1200
2024-08-01	1263.4	1212.1	1287.5	1200
2024-07-01	1263.4	1212.1	1287.5	1200
2024-06-01	1208.3	1212.1	1200.4	1200
2024-08-01	1208.3	1212.1	1200.4	1200
2024-04-01	1208.3	1212.1	1200.4	1200
2024-03-01	1217.9	1221.1	1200.4	1200
2024-02-01	1204.4	1221.1	1185.6	1200
2024-01-01	1204.4	1221.1	1185.6	1200
2023-12-01	1204.4	1221.1	1185.6	1200
2023-11-01	1204.4	1221.1	1185.6	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 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	0	Yes	Analysis
2	Cape Winelands Top Schools 2025 (U13)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
3	Cape Winelands Schools Prestige 2025 (U13 Girls)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
4	Cape Winelands Schools - Trials 1 2025 (U13 Girls)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	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 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	0	Yes	Analysis
2	Cape Winelands Top Schools 2025 (U13)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
3	Cape Winelands Schools Prestige 2025 (U13 Girls)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
4	Cape Winelands Schools - Trials 1 2025 (U13 Girls)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
5	Western Cape - Brian Raubenheimer Development Tournament 2024 (U13 Girls)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	6	6	5.5	Yes	Analysis
6	Cape Winelands Schools - Prestige 2024 (U13 Girls)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
7	Cape Winelands Schools - PS Trials 1 2024 (U13 Girls)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
8	CW Top Schools 2023 (U13 Mix + U13 Girls)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	1	0	Yes	Analysis
9	Western Cape PS Individuals 2023 (U11 Girls)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
10	Cape Winelands Schools Prestige 2023 (U11 Girls)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
11	Cape Winelands Schools Chess - Trials 1 2023 (U11 Girls)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	3	1	Yes	Analysis

#	Games	Start				End
1	8	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Cape Winelands Schools - Trials 1 2025
		date 2024-06-08	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Jama, L (Lutho)				Opponent Wilskut, J (Jo-Mari Celine)
2	5	Tournament Cape Winelands Schools Prestige 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-03-08	rnd 4	type Standard	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Rossouw, J (Jana)				Opponent Baron, L (Lial)
3	3	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 4	type Standard	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Van Der Westhuizen, L (Linli)				Opponent Smith, N (Nehe-Mia)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 4	type Standard	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Van Der Westhuizen, L (Linli)				Opponent Smith, N (Nehe-Mia)
2	2	Tournament Cape Winelands Schools Prestige 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-03-08	rnd 4	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 0.5
		Opponent Rossouw, J (Jana)				Opponent Smith, N (Nehe-Mia)
3	2	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 1	type Standard	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Davids, M (Mia)				Opponent Wilskut, J (Jo-Mari Celine)

#	Games	Start				End
1	9	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Cape Winelands Top Schools 2025
		date 2024-06-08	rnd 1	type Rapid	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Jama, L (Lutho)				Opponent Baron, L (Lial)
2	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 2	type Rapid	result 1
		Opponent October, A (Azraa)				Opponent Van Tonder, M (Mieke)
3	1	Tournament Cape Winelands Top Schools 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-23	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 5	type Rapid	result 1
		Opponent Pieterse, J (Jemille)				Opponent Pieterse, J (Jemille)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Cape Winelands Schools - Trials 1 2025
		date 2024-06-08	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Krynauw, E (Elana)				Opponent Wilskut, J (Jo-Mari Celine)
2	3	Tournament Cape Winelands Top Schools 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-23	rnd 1	type Rapid	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Witbooi, E (Enino)				Opponent Baron, L (Lial)
3	3	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 4	type Standard	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Van Der Westhuizen, L (Linli)				Opponent Smith, N (Nehe-Mia)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 4	type Standard	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Van Der Westhuizen, L (Linli)				Opponent Smith, N (Nehe-Mia)
2	2	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 1	type Standard	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Davids, M (Mia)				Opponent Wilskut, J (Jo-Mari Celine)
3	2	Tournament Western Cape PS Individuals 2023				Tournament Cape Winelands Schools - Prestige 2024
		date 2023-05-06	rnd 6	type Standard	result 1	date 2024-03-02	rnd 1	type Standard	result 1
		Opponent Rubusana, L (Lolothando)				Opponent October, A (Azraa)

#	Games	Start				End
1	6	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Cape Winelands Top Schools 2025
		date 2024-06-08	rnd 4	type Rapid	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Krynauw, E (Elana)				Opponent Baron, L (Lial)
2	2	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 1	type Rapid	result 1	date 2024-06-08	rnd 2	type Rapid	result 1
		Opponent Jama, L (Lutho)				Opponent Klopper, M (Marli)
3	2	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 2	type Rapid	result 1
		Opponent October, A (Azraa)				Opponent Van Tonder, M (Mieke)

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	Smith ,N (Nehe-Mia)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
1	Smith ,N (Nehe-Mia)	3	1142.7	1426	3	1119.3	1426	0	0	0	0	0	0
2	Coetzee ,E (Emma)	2	1	0	2	1	0	0	0	0	0	0	0
2	Coetzee ,E (Emma)	2	1167.2	1167.2	2	1191	1167.2	0	0	0	0	0	0
3	Van Der Westhuizen ,L (Linli)	2	1	0	2	1	0	0	0	0	0	0	0
3	Van Der Westhuizen ,L (Linli)	2	1182.8	1182.8	2	1175.6	1182.8	0	0	0	0	0	0
4	Farmer ,L (Linnique)	2	1	0	1	0	-425	1	1	425	0	0	0
4	Farmer ,L (Linnique)	2	1192.2	1192.2	1	1174.9	767.2	1	1200	1617.2	0	0	0
5	April ,T (Tamlin)	2	0	-425	1	0	-425	1	0	-425	0	0	0
5	April ,T (Tamlin)	2	1412.9	987.9	1	1422.8	987.9	1	1230.6	987.9	0	0	0
6	Van Tonder ,M (Mieke)	2	2	425	1	1	425	1	1	425	0	0	0
6	Van Tonder ,M (Mieke)	2	1215.5	1640.5	1	1233.6	1640.5	1	1200	1640.5	0	0	0
7	October ,A (Azraa)	2	2	425	1	1	425	1	1	425	0	0	0
7	October ,A (Azraa)	2	1162.8	1587.8	1	1200	1587.8	1	1115.4	1587.8	0	0	0
8	Pienaar ,C (Christoff)	2	1	0	1	0	-425	1	1	425	0	0	0
8	Pienaar ,C (Christoff)	2	1195.7	1195.7	1	1200	770.7	1	1186.4	1620.7	0	0	0
9	Lukas ,J (Janeva)	2	0	-425	1	0	-425	1	0	-425	0	0	0
9	Lukas ,J (Janeva)	2	1408.4	983.4	1	1424.4	983.4	1	1335.9	983.4	0	0	0
10	Viljoen ,L (Lienka)	2	0	-425	1	0	-425	1	0	-425	0	0	0
10	Viljoen ,L (Lienka)	2	1300.9	875.9	1	1345.2	875.9	1	1290.9	875.9	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Van Der Merwe, Z (Zoe)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms