Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Westhuizen, M (Mika)

Chess SA id

2120138448

FIDE id

534009647

Date of birth

2012-09-08 (U16)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-12-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1519	1563.3	1316.1	1292.2
Raw rating	1519	1563.3	1300.5	1292.2
Weighted rating	1460	1481.3	1316.1	1214.4
Weighted performance	1450.9	1561.4	1205.1	0
Floor	1041.2	1063.3	860.7	792.2
K-factor	32	32	36	36
Min/Max rating change allowed	105.3	98.8	143.7	145.4
Highest rating	1541.2 2025-11-30	1588.3 2025-09-01	1539.9 2022-06-01	1292.2 2025-11-30
Highest raw rating	1541.2 2025-11-30	1563.3 2026-01-01	1360.7 2024-03-01	1292.2 2025-11-30
Highest weighted rating	1490.2 2025-03-01	1494.5 2025-03-01	1360.7 2024-04-01	1207.4 2025-11-30
Highest weighted performance	1523.8 2025-08-01	1588.3 2025-09-01	1539.9 2022-06-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-0.8	0
New rating	1519	1563.3	1315.3	1292.2
Analysis
Rating	1519	1563.3	1316.1	1292.2
Raw rating	1519	1563.3	1300.5	1292.2
Weighted rating	1460	1481.3	1316.1
Weighted performance	1450.9	1561.4	1205.1
K-factor	32	32	36	36
Floor	1041.2	1063.3	860.7	792.2
Max/Min rating change allowed	105.3	98.8	143.7	145.4
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	1519	1563.3	1300.5	1292.2
New weighted rating	1466.8	1489.4	1315.3	1221.2
New weighted performance	1441.4	1551	1196.6	0
Temp new rating	1519	1563.3	1315.3	1292.2
Temp new rating +/-	0	0	-0.8	0
Final new rating +/-	0	0	-0.8	0
New rating	1519	1563.3	1315.3	1292.2
New K-factor	32	32	36	36
New floor	1041.2	1063.3	860.7	792.2

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	65	44	12	9
	56	38	18	0
	59	26	33	0
	14	9	5	0
	0	0	0	0
History	194	117	68	9

Games since
	Main 125	Standard 86		Rapid 30		Blitz 9
Gender	Female
Age group	U14
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	971		305		11
Female	101		38		2
U14	122		41		3
U14 Female	20		8		2
Standard
	RSA		Province		Region
Overall	850		228		7
Female	87		29		2
U14	111		34		3
U14 Female	18		8		2
Rapid
	RSA		Province		Region
Overall	871		444		46
Female	133		71		12
U14	185		97		12
U14 Female	41		20		5
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	65	43	66.15	137.3	1369.9	1507.2
Standard	44	28.5	64.77	125.6	1380.3	1505.9
Rapid	12	7.5	62.5	106.2	1312.2	1418.5
Blitz	9	7	77.78	236.1	1395.8	1631.9
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	194	123	63.4	113.9	1303.9	1417.8
Standard	117	75	64.1	119.9	1318.4	1438.3
Rapid	68	41	60.29	87.5	1266.8	1354.3
Blitz	9	7	77.78	236.1	1395.8	1631.9

Date	Main	Standard	Rapid	Blitz
2026-01-01	1519	1563.3	1300.5	1292.2
2025-11-30	1541.2	1551.7	1330.4	1292.2
2025-11-01	1532.8	1551.7	1330.4	1200
2025-09-30	1532.8	1551.7	1330.4	1200
2025-09-01	1532.8	1551.7	1330.4	1200
2025-08-01	1523.8	1520.3	1335.3	1200
2025-07-01	1490.2	1494.5	1335.3	1200
2025-06-01	1490.2	1494.5	1335.3	1200
2025-05-01	1400.2	1420.4	1335.3	1200
2025-04-01	1391.6	1418.8	1335.3	1200
2025-03-01	1398.9	1420	1335.3	1200
2025-02-01	1387.6	1414.6	1301.3	1200
2025-01-01	1337.4	1345.8	1292	1200
2024-12-01	1379.6	1391.2	1292	1200
2024-11-01	1379.6	1391.2	1292	1200
2024-10-01	1379.6	1391.2	1292	1200
2024-09-01	1400.9	1454.9	1256.7	1200
2024-11-01	1400.9	1454.9	1256.7	1200
2024-07-01	1362.9	1421.6	1256.7	1200
2024-06-01	1362.9	1421.6	1256.7	1200
2024-05-01	1374.9	1457.4	1256.7	1200
2024-04-01	1421.1	1457.4	1348.1	1200
2024-03-01	1437	1466.4	1360.7	1200
2024-02-01	1437	1466.4	1360.7	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 Individual Championships (U14 Girls)	2025-12-17	2025-12-20	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
2	2025 Mzansi Inter Provincial Team Championships (U14 Girls)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	6	5.5	Yes	Analysis
3	Kraaifontein Open 2025 (Junior Rapid U14)	2025-12-06	2025-12-06	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
4	Hermanus Chess Club November Blitz 2025 (Junior)	2025-11-29	2025-11-29	Blitz	Overberg (WOS)	9	9	7	Yes	Analysis
5	Curro Chess Open Rapid 2025 (U14)	2025-08-23	2025-08-23	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
6	Overberg Top Schools 2025 (U13)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
7	Cape Winelands Open 2025 (U14)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
8	Western Cape Schools Individual Championship 2025 (U13 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
9	West Coast And Mykonos Open 2025 (U14)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
10	South African Junior Closed Chess Championships 2025 (U14 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	4	Yes	Analysis
11	Cape Town Open Chess Festival 2025 (U14)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
12	Overberg Schools - PS Closed 2025 (U13 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
13	Overberg Schools - PS Trials (Region 1) 2025 (U13 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	4.5	Yes	Analysis
14	Helderberg Chess Club PS Development Tournament 2025 (U13 Girls)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
15	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Girls Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	6	2	Yes	Analysis
16	Overberg GP Invitational Day 2 2024 (B)	2024-09-27	2024-09-27	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
17	Overberg GP Invitational Day 1 2024 (B)	2024-09-26	2024-09-26	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
18	Kingsway Chess Open 2024 (U12)	2024-09-14	2024-09-14	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
19	Western Cape Top Schools Championship 2024 (U13 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	2	Yes	Analysis
20	Overberg Schools - Top Schools 2024 (U13 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	5	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	Hermanus Chess Club Open 2024 (Intermediate)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	7	2	Yes	Analysis
23	Overberg Schools - PS Closed 2024 (U13 Girls)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
24	Overberg Schools - PS Trials Region 3 2024 (U13 Girls)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
25	2023 Western Cape Rural Cup (U12)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	3	Yes	Analysis
26	Bonnievale Open Rapid 2023 (U12)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
27	Western Cape Top Schools 2023 (U11 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
28	Overberg Top Schools 2023 (U11)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	4.5	Yes	Analysis
29	Overberg Club Championships 2023 (A+B)	2023-07-29	2023-07-29	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
30	Zwelihle Chess Club Rapid 2023 (C)	2023-06-17	2023-06-17	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
31	Western Cape PS Individuals 2023 (U11 Girls)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	6	Yes	Analysis
32	Hermanus Rapid 2023 (C)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
33	Overberg School Chess Closed Tournament 2023 (U11 Girls)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
34	Overberg Primary School Trials (Region 2)	2023-02-24	2023-03-10	Rapid	Overberg (WOS)	6	5	3.5	Yes	Analysis
35	Overberg Schools Open Tournament 2023 (U12)	2023-02-11	2023-02-11	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
36	OCF Youth Day Tournament 2022 (C)	2022-06-18	2022-06-18	Rapid	Overberg (WOS)	5	5	4.5	Yes	Analysis
37	Western Cape Schools 2022 (U11 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	5	1	Yes	Analysis
38	Overberg Primary Schools Closed 2022 (U11 Girls)	2022-03-12	2022-03-12	Standard	Overberg (WOS)	5	4	2	Yes	Analysis

#	Games	Start				End
1	10	Tournament Cape Winelands Open 2025				Tournament Curro Chess Open Rapid 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Schoeman, A (Alexander)				Opponent Van Der Walt, T (Tristan)
2	8	Tournament Zwelihle Chess Club Rapid 2023				Tournament Overberg Club Championships 2023
		date 2023-06-17	rnd 3	type Rapid	result 1	date 2023-07-29	rnd 4	type Rapid	result 1
		Opponent Omar, A (Abdullah)				Opponent Sonaba, L (Libhongo)
3	8	Tournament Hermanus Rapid 2023				Tournament Zwelihle Chess Club Rapid 2023
		date 2023-04-22	rnd 6	type Rapid	result 1	date 2023-06-17	rnd 1	type Rapid	result 1
		Opponent Matthee, L (Luke)				Opponent Siqhaza, O (Owam)

#	Games	Start				End
1	12	Tournament Overberg School Chess Closed Tournament 2023				Tournament Overberg Top Schools 2023
		date 2023-03-25	rnd 5	type Standard	result 1	date 2023-08-05	rnd 5	type Standard	result 1
		Opponent Collins, E (Esme)				Opponent Bota, A (Alupheli)
2	7	Tournament Cape Winelands Open 2025				Tournament Overberg Top Schools 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Schoeman, A (Alexander)				Opponent Sebyboe, J (Jo-Heiden)
3	6	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 1	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Van Der Merwe, L (Luan Rudolf Johanne)				Opponent Prins, E (Eddie)

#	Games	Start				End
1	8	Tournament Zwelihle Chess Club Rapid 2023				Tournament Overberg Club Championships 2023
		date 2023-06-17	rnd 3	type Rapid	result 1	date 2023-07-29	rnd 4	type Rapid	result 1
		Opponent Omar, A (Abdullah)				Opponent Sonaba, L (Libhongo)
2	5	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 0.5
		Opponent Mullins, C (Charlotte)				Opponent Ntontelo, K (Khazimla)
3	5	Tournament OCF Youth Day Tournament 2022				Tournament OCF Youth Day Tournament 2022
		date 2022-06-18	rnd 1	type Rapid	result 1	date 2022-06-18	rnd 5	type Rapid	result 1
		Opponent Otto, T (Taylor)				Opponent Stevens, DA (Danielle-Ann)

No games found.

#	Games	Start				End

#	Games	Start				End
1	10	Tournament Cape Winelands Open 2025				Tournament Curro Chess Open Rapid 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Schoeman, A (Alexander)				Opponent Van Der Walt, T (Tristan)
2	8	Tournament Zwelihle Chess Club Rapid 2023				Tournament Overberg Club Championships 2023
		date 2023-06-17	rnd 3	type Rapid	result 1	date 2023-07-29	rnd 4	type Rapid	result 1
		Opponent Omar, A (Abdullah)				Opponent Sonaba, L (Libhongo)
3	8	Tournament Hermanus Rapid 2023				Tournament Zwelihle Chess Club Rapid 2023
		date 2023-04-22	rnd 6	type Rapid	result 1	date 2023-06-17	rnd 1	type Rapid	result 1
		Opponent Matthee, L (Luke)				Opponent Siqhaza, O (Owam)

#	Games	Start				End
1	9	Tournament Overberg School Chess Closed Tournament 2023				Tournament Overberg Top Schools 2023
		date 2023-03-25	rnd 5	type Standard	result 1	date 2023-08-05	rnd 2	type Standard	result 1
		Opponent Collins, E (Esme)				Opponent Fortuin, E (Eron)
2	7	Tournament Cape Winelands Open 2025				Tournament Overberg Top Schools 2025
		date 2025-07-19	rnd 4	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Schoeman, A (Alexander)				Opponent Sebyboe, J (Jo-Heiden)
3	6	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 1	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Van Der Merwe, L (Luan Rudolf Johanne)				Opponent Prins, E (Eddie)

#	Games	Start				End
1	8	Tournament Zwelihle Chess Club Rapid 2023				Tournament Overberg Club Championships 2023
		date 2023-06-17	rnd 3	type Rapid	result 1	date 2023-07-29	rnd 4	type Rapid	result 1
		Opponent Omar, A (Abdullah)				Opponent Sonaba, L (Libhongo)
2	4	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Mullins, C (Charlotte)				Opponent Kotze, M (Marlie)
3	3	Tournament Curro Chess Open Rapid 2025				Tournament Curro Chess Open Rapid 2025
		date 2025-08-23	rnd 1	type Rapid	result 1	date 2025-08-23	rnd 3	type Rapid	result 1
		Opponent Baliso, A (Asenathi)				Opponent Van Der Walt, T (Tristan)

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	Stevens ,DA (Danielle-Ann)	8	1.5	-265.6	4	0.5	-318.8	4	1	-212.5	0	0	0
1	Stevens ,DA (Danielle-Ann)	8	1377.2	1111.5	4	1424.4	1058.4	4	1272.6	1164.7	0	0	0
2	Cilliers ,D (Dene)	5	4	255	3	3	425	2	1	0	0	0	0
2	Cilliers ,D (Dene)	5	1507.3	1762.3	3	1545.3	1932.3	2	1460.1	1507.3	0	0	0
3	Rock ,M (Mieke)	3	3	425	3	3	425	0	0	0	0	0	0
3	Rock ,M (Mieke)	3	1162.2	1587.2	3	1145.4	1587.2	0	0	0	0	0	0
4	Hagen ,S (Sophia)	3	0	-425	3	0	-425	0	0	0	0	0	0
4	Hagen ,S (Sophia)	3	1573.9	1148.9	3	1561.5	1148.9	0	0	0	0	0	0
5	Beyers ,S (Skylar)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
5	Beyers ,S (Skylar)	3	1272.9	1556.2	3	1265.1	1556.2	0	0	0	0	0	0
6	Collins ,E (Esme)	3	3	425	2	2	425	1	1	425	0	0	0
6	Collins ,E (Esme)	3	1180.1	1605.1	2	1174.8	1605.1	1	1234.7	1605.1	0	0	0
7	Bota ,A (Alupheli)	3	3	425	2	2	425	1	1	425	0	0	0
7	Bota ,A (Alupheli)	3	1186.2	1611.2	2	1191.4	1611.2	1	1200	1611.2	0	0	0
8	Fortuin ,E (Eron)	3	3	425	2	2	425	1	1	425	0	0	0
8	Fortuin ,E (Eron)	3	1147.5	1572.5	2	1136.6	1572.5	1	1200	1572.5	0	0	0
9	Webb ,A (Amori)	3	2	141.7	2	1	0	1	1	425	0	0	0
9	Webb ,A (Amori)	3	1235.8	1377.5	2	1227.8	1235.8	1	1200.9	1660.8	0	0	0
10	Buhr ,G (Gretchen)	3	2	141.7	2	1	0	1	1	425	0	0	0
10	Buhr ,G (Gretchen)	3	1193	1334.6	2	1242.6	1193	1	1140.4	1618	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Van Der Westhuizen, M (Mika)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms