Chess South Africa Ratings Database

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Personal

Van Der Westhuizen, M (Mika)

Chess SA id

2120138448

FIDE id

Date of birth

2012-09-08 (U14)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-23

Personal details last changed

1900-01-01

Junior GPX Games

55.5

Junior GPX Points

1365.3

Item	Main	Standard	Rapid	Blitz
Rating	1532.8	1572.2	1330.4	1200
Raw rating	1532.8	1551.7	1330.4	1200
Weighted rating	1434.8	1456.7	1314.7	1200
Weighted performance	1498.1	1572.2	1216.8	0
Floor	1032.8	1051.7	860.7	700
K-factor	32	32	36	36
Min/Max rating change allowed	103.2	100.5	137.7	165.8
Highest rating	1532.8 2025-09-01	1588.3 2025-09-01	1539.9 2022-06-01	1200 2018-10-01
Highest raw rating	1532.8 2025-09-01	1551.7 2025-09-01	1360.7 2024-03-01	1200 2024-03-01
Highest weighted rating	1490.2 2025-03-01	1494.5 2025-03-01	1360.7 2024-04-01	1200 2018-10-01
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	-0.6	0	0
New rating	1532.8	1571.6	1330.4	1200
Analysis
Rating	1532.8	1572.2	1330.4	1200
Raw rating	1532.8	1551.7	1330.4	1200
Weighted rating	1434.8	1456.7	1314.7
Weighted performance	1498.1	1572.2	1216.8
K-factor	32	32	36	36
Floor	1032.8	1051.7	860.7	700
Max/Min rating change allowed	103.2	100.5	137.7	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	1532.8	1551.7	1330.4	1200
New weighted rating	1443.7	1465	1315.9	1200
New weighted performance	1497.6	1571.6	1216.4	0
Temp new rating	1532.8	1571.6	1330.4	1200
Temp new rating +/-	0	-0.6	0	0
Final new rating +/-	0	-0.6	0	0
New rating	1532.8	1571.6	1330.4	1200
New K-factor	32	32	36	36
New floor	1032.8	1051.7	860.7	700

Item	Main	Standard	Rapid
	0	0	0
	56	44	12
	56	38	18
	59	26	33
	14	9	5
	0	0	0
History	185	117	68

Games since
	Main 122	Standard 86		Rapid 36		Blitz 0
Gender	Female
Age group	U14
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1020		300		13
Female	120		45		2
U14	133		47		4
U14 Female	23		10		2
Standard
	RSA		Province		Region
Overall	724		194		8
Female	77		28		2
U14	93		30		3
U14 Female	16		7		2
Rapid
	RSA		Province		Region
Overall	850		437		48
Female	139		77		13
U14	182		98		13
U14 Female	44		25		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	56	36	64.29	121.4	1365.7	1487.2
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	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	185	116	62.7	108	1299.5	1407.4
Standard	117	75	64.1	119.9	1318.4	1438.3
Rapid	68	41	60.29	87.5	1266.8	1354.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
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
2024-08-01	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
2024-08-01	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
2024-01-01	1437	1466.4	1360.7	1200
2023-12-01	1437	1466.4	1360.7	1200
2023-11-01	1410.4	1418.4	1360.7	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	Curro Chess Open Rapid 2025 (U14)	2025-08-23	2025-08-23	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
2	Overberg Top Schools 2025 (U13)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
3	Cape Winelands Open 2025 (U14)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U13 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
5	West Coast And Mykonos Open 2025 (U14)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
6	South African Junior Closed Chess Championships 2025 (U14 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	4	Yes	Analysis
7	Cape Town Open Chess Festival 2025 (U14)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
8	Overberg Schools - PS Closed 2025 (U13 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
9	Overberg Schools - PS Trials (Region 1) 2025 (U13 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	4.5	Yes	Analysis
10	Helderberg Chess Club PS Development Tournament 2025 (U13 Girls)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Curro Chess Open Rapid 2025 (U14)	2025-08-23	2025-08-23	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
2	Overberg Top Schools 2025 (U13)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
3	Cape Winelands Open 2025 (U14)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U13 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
5	West Coast And Mykonos Open 2025 (U14)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
6	South African Junior Closed Chess Championships 2025 (U14 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	4	Yes	Analysis
7	Cape Town Open Chess Festival 2025 (U14)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
8	Overberg Schools - PS Closed 2025 (U13 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
9	Overberg Schools - PS Trials (Region 1) 2025 (U13 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	4.5	Yes	Analysis
10	Helderberg Chess Club PS Development Tournament 2025 (U13 Girls)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
11	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Girls Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	6	2	Yes	Analysis
12	Overberg GP Invitational Day 2 2024 (B)	2024-09-27	2024-09-27	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
13	Overberg GP Invitational Day 1 2024 (B)	2024-09-26	2024-09-26	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
14	Kingsway Chess Open 2024 (U12)	2024-09-14	2024-09-14	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
15	Western Cape Top Schools Championship 2024 (U13 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	2	Yes	Analysis
16	Overberg Schools - Top Schools 2024 (U13 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
17	Western Cape PS Individuals Championship 2024 (U13 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
18	Hermanus Chess Club Open 2024 (Intermediate)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	7	2	Yes	Analysis
19	Overberg Schools - PS Closed 2024 (U13 Girls)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
20	Overberg Schools - PS Trials Region 3 2024 (U13 Girls)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
21	2023 Western Cape Rural Cup (U12)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	3	Yes	Analysis
22	Bonnievale Open Rapid 2023 (U12)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
23	Western Cape Top Schools 2023 (U11 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
24	Overberg Top Schools 2023 (U11)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	4.5	Yes	Analysis
25	Overberg Club Championships 2023 (A+B)	2023-07-29	2023-07-29	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
26	Zwelihle Chess Club Rapid 2023 (C)	2023-06-17	2023-06-17	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
27	Western Cape PS Individuals 2023 (U11 Girls)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	6	Yes	Analysis
28	Hermanus Rapid 2023 (C)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
29	Overberg School Chess Closed Tournament 2023 (U11 Girls)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
30	Overberg Primary School Trials (Region 2)	2023-02-24	2023-03-10	Rapid	Overberg (WOS)	6	5	3.5	Yes	Analysis
31	Overberg Schools Open Tournament 2023 (U12)	2023-02-11	2023-02-11	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
32	OCF Youth Day Tournament 2022 (C)	2022-06-18	2022-06-18	Rapid	Overberg (WOS)	5	5	4.5	Yes	Analysis
33	Western Cape Schools 2022 (U11 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	5	1	Yes	Analysis
34	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

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms