Chess South Africa Ratings Database

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Williams, M (Mackenzy)

Chess SA id

2160137731

FIDE id

Date of birth

2016-01-27 (U10)

Gender

Female

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

52.9

Junior GPX Points

1237.2

Item	Main	Standard	Rapid	Blitz
Rating	1367.9	1382.7	1284.1	1200
Raw rating	1367.9	1382.7	1284.1	1200
Weighted rating	1328.4	1345	1233.7	1200
Weighted performance	1272.7	1324.2	1252.7	0
Floor	916.3	907	784.1	700
K-factor	32	32	36	36
Min/Max rating change allowed	130.5	127.8	147.1	165.8
Highest rating	1441 2023-05-01	1408.9 2023-05-01	1284.1 2025-09-01	1200 2018-10-01
Highest raw rating	1416.3 2023-06-01	1407 2025-04-01	1284.1 2025-09-01	1200 2024-03-01
Highest weighted rating	1416.3 2024-07-01	1407 2024-10-01	1228.5 2025-09-01	1200 2018-10-01
Highest weighted performance	1441 2023-05-01	1408.9 2023-05-01	1266.6 2023-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1367.9	1382.7	1284.1	1200
Analysis
Rating	1367.9	1382.7	1284.1	1200
Raw rating	1367.9	1382.7	1284.1	1200
Weighted rating	1328.4	1345	1233.7
Weighted performance	1272.7	1324.2	1252.7
K-factor	32	32	36	36
Floor	916.3	907	784.1	700
Max/Min rating change allowed	130.5	127.8	147.1	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	1367.9	1382.7	1284.1	1200
New weighted rating	1332.7	1348.9	1238.8	1200
New weighted performance	1272.2	1323.7	1252.2	0
Temp new rating	1367.9	1382.7	1284.1	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1367.9	1382.7	1284.1	1200
New K-factor	32	32	36	36
New floor	916.3	907	784.1	700

Item	Main	Standard	Rapid
	0	0	0
	48	31	17
	50	27	23
	35	20	15
	33	26	7
	0	0	0
History	166	104	62

Games since
	Main 114	Standard 63		Rapid 51		Blitz 0
Gender	Female
Age group	U10
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2482		774		118
Female	441		180		32
U10	181		48		4
U10 Female	30		14		1
Standard
	RSA		Province		Region
Overall	2236		609		88
Female	395		142		23
U10	159		37		4
U10 Female	21		8		1
Rapid
	RSA		Province		Region
Overall	1131		583		105
Female	202		120		28
U10	94		48		5
U10 Female	17		10		1
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	48	29.5	61.46	97.4	1286.4	1383.8
Standard	31	20	64.52	123.4	1280.6	1404
Rapid	17	9.5	55.88	50	1297	1347
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	166	94.5	56.93	58.9	1223	1281.9
Standard	104	62	59.62	81.7	1226.8	1308.5
Rapid	62	32.5	52.42	20.6	1216.7	1237.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1367.9	1382.7	1284.1	1200
2025-09-01	1367.9	1382.7	1284.1	1200
2025-08-01	1363.9	1382.7	1256.5	1200
2025-07-01	1363.9	1382.7	1256.5	1200
2025-06-01	1370.8	1382.7	1252.8	1200
2025-05-01	1347.9	1346	1222.7	1200
2025-04-01	1404.4	1407	1222.7	1200
2025-03-01	1322.5	1340.7	1222.7	1200
2025-02-01	1299.9	1315.8	1222.7	1200
2025-01-01	1270.2	1275.4	1222.7	1200
2024-12-01	1285.2	1301.7	1222.7	1200
2024-11-01	1285.2	1301.7	1222.7	1200
2024-10-01	1284.2	1305.7	1202.9	1200
2024-09-01	1284.2	1305.7	1202.9	1200
2024-08-01	1282.9	1313.3	1202.9	1200
2024-07-01	1282.9	1313.3	1202.9	1200
2024-06-01	1282.9	1313.3	1202.9	1200
2024-08-01	1272	1309	1202.9	1200
2024-04-01	1272	1309	1202.9	1200
2024-03-01	1288.2	1324.5	1197.9	1200
2024-02-01	1301.1	1324.5	1192.9	1200
2024-01-01	1313.4	1324.5	1199.7	1200
2023-12-01	1313.4	1324.5	1199.7	1200
2023-11-01	1313.4	1324.5	1199.7	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	De Villiers PS 2025 (U12 Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
2	Cape Winelands Queens 2025 (U9)	2025-06-21	2025-06-21	Rapid	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U9 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
4	Brave Knights Rapid 2025 (U11)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
5	South African Junior Closed Chess Championships 2025 (U10 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	8	2.5	Yes	Analysis
6	Cape Winelands Schools Prestige 2025 (U9 Girls)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	6	6	5.5	Yes	Analysis
7	Cape Winelands Schools - Trials 1 2025 (U9 Girls)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
8	Marie Delport Memorial 2025 (U10 Boys+Girls)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	De Villiers PS 2025 (U12 Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
2	Cape Winelands Queens 2025 (U9)	2025-06-21	2025-06-21	Rapid	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U9 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
4	Brave Knights Rapid 2025 (U11)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
5	South African Junior Closed Chess Championships 2025 (U10 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	8	2.5	Yes	Analysis
6	Cape Winelands Schools Prestige 2025 (U9 Girls)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	6	6	5.5	Yes	Analysis
7	Cape Winelands Schools - Trials 1 2025 (U9 Girls)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
8	Marie Delport Memorial 2025 (U10 Boys+Girls)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
9	Mzansi Interprovincial Youth Chess Championships 2024 (U10 Girls Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	6	2	Yes	Analysis
10	Worcester Knock-Out 2024 (U9 Girls)	2024-10-19	2024-10-19	Rapid	Cape Winelands (WCW)	6	5	3	Yes	Analysis
11	Strategema Chess October 2024 (U9)	2024-10-05	2024-10-05	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
12	De Villiers PS Tournament 2024 (U10)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
13	Western Cape PS Individuals Championship 2024 (U9 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
14	Brave Knights 2024 (U9)	2024-03-16	2024-03-16	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
15	Cape Winelands Schools - Prestige 2024 (U9 Girls)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
16	Cape Winelands Schools - PS Trials 1 2024 (U9 Girls)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
17	Cape Winelands - Marie Delport Memorial 2024 (U10)	2024-01-27	2024-01-27	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
18	Ashton Skaakmat Rapid 2023 (U7)	2023-11-18	2023-11-18	Rapid	Cape Winelands (WCW)	6	5	2	Yes	Analysis
19	Robertson Chess Tournament Oct 2023 (U9)	2023-10-28	2023-10-28	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
20	Bonnievale Open Rapid 2023 (U8)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
21	Western Cape PS Individuals 2023 (U7 Girls)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
22	Cape Winelands Schools Prestige 2023 (U7 Boys+Girls)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	4	4	Yes	Analysis
23	Langeberg Schools Chess Trials 2023 (U7 Boys+Girls)	2023-02-11	2023-02-11	Rapid	Cape Winelands (WCW)	5	4	3.5	Yes	Analysis
24	Cape Winelands Schools Chess - Trials 1 2023 (U7 Boys+Girls)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis
25	CW Grass Roots Tournament 2022 (U7 Boys+Girls)	2022-11-19	2022-11-19	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
26	Western Cape Top Schools 2022 (U7 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	6	4	2	Yes	Analysis
27	Cape Winelands Schools Top Schools 2022 (U7-U11 Mixed)	2022-08-27	2022-08-27	Standard	Cape Winelands (WCW)	6	5	1	Yes	Analysis
28	Western Cape Schools 2022 (U7 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
29	Strategema Chess Festival 2022 (U7+U9 Girls)	2022-05-14	2022-05-14	Rapid	Cape Winelands (WCW)	3	2	1	Yes	Analysis
30	Cape Winelands Schools 2022 (U7 Boys+Girls)	2022-03-12	2022-03-12	Standard	Cape Winelands (WCW)	7	6	3	Yes	Analysis
31	Lanfeberg Schools Chess Trials 2022 (U7+U9)	2022-02-26	2022-02-26	Rapid	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	17	Tournament CW Grass Roots Tournament 2022				Tournament Western Cape PS Individuals 2023
		date 2022-11-19	rnd 5	type Standard	result 1	date 2023-05-05	rnd 3	type Standard	result 1
		Opponent Willemse, N (Nieveah)				Opponent Hendricks, W (Willow)
2	8	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 1
		Opponent Swanepoel, M (Mariaan)				Opponent Grovers, I (Isabella)
3	4	Tournament Cape Winelands Queens 2025				Tournament De Villiers PS 2025
		date 2025-06-21	rnd 4	type Rapid	result 1	date 2025-08-16	rnd 1	type Rapid	result 1
		Opponent Lambrechts, M (Mila)				Opponent Baadjies, Q (Qiana)

#	Games	Start				End
1	13	Tournament CW Grass Roots Tournament 2022				Tournament Western Cape PS Individuals 2023
		date 2022-11-19	rnd 5	type Standard	result 1	date 2023-05-05	rnd 3	type Standard	result 1
		Opponent Willemse, N (Nieveah)				Opponent Hendricks, W (Willow)
2	8	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 1
		Opponent Swanepoel, M (Mariaan)				Opponent Grovers, I (Isabella)
3	4	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Sgijimi, A (Asiphile)				Opponent Klopper, E (Elbe)

#	Games	Start				End
1	7	Tournament Strategema Chess Festival 2022				Tournament Bonnievale Open Rapid 2023
		date 2022-05-14	rnd 2	type Rapid	result 1	date 2023-10-21	rnd 2	type Rapid	result 1
		Opponent Davids, S (Stephanie)				Opponent Klopper, E (Elbe)
2	4	Tournament Cape Winelands Queens 2025				Tournament De Villiers PS 2025
		date 2025-06-21	rnd 4	type Rapid	result 1	date 2025-08-16	rnd 1	type Rapid	result 1
		Opponent Lambrechts, M (Mila)				Opponent Baadjies, Q (Qiana)
3	3	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 2	type Rapid	result 1	date 2024-02-10	rnd 4	type Rapid	result 1
		Opponent Mitchell, F (Falon)				Opponent Willemse, N (Nieveah)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 2	type Standard	result 1	date 2023-05-05	rnd 3	type Standard	result 1
		Opponent Barends, M (Matthew)				Opponent Hendricks, W (Willow)
2	5	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Swanepoel, M (Mariaan)				Opponent Swanepoel, M (Mariaan)
3	5	Tournament Langeberg Schools Chess Trials 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-11	rnd 4	type Rapid	result 1	date 2023-02-18	rnd 4	type Standard	result 1
		Opponent Thorpe, H (Hadley)				Opponent Kleinbooi, R (Riley)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools Prestige 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-11	rnd 2	type Standard	result 1	date 2023-05-05	rnd 3	type Standard	result 1
		Opponent Barends, M (Matthew)				Opponent Hendricks, W (Willow)
2	5	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Swanepoel, M (Mariaan)				Opponent Swanepoel, M (Mariaan)
3	5	Tournament CW Grass Roots Tournament 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-11-19	rnd 5	type Standard	result 1	date 2023-02-18	rnd 4	type Standard	result 1
		Opponent Willemse, N (Nieveah)				Opponent Kleinbooi, R (Riley)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 2	type Rapid	result 1	date 2024-02-10	rnd 4	type Rapid	result 1
		Opponent Mitchell, F (Falon)				Opponent Willemse, N (Nieveah)
2	3	Tournament Langeberg Schools Chess Trials 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-02-11	rnd 4	type Rapid	result 1	date 2023-10-21	rnd 2	type Rapid	result 1
		Opponent Thorpe, H (Hadley)				Opponent Klopper, E (Elbe)
3	3	Tournament Strategema Chess Festival 2022				Tournament Langeberg Schools Chess Trials 2023
		date 2022-05-14	rnd 2	type Rapid	result 1	date 2023-02-11	rnd 2	type Rapid	result 1
		Opponent Davids, S (Stephanie)				Opponent Kleinbooi, R (Riley)

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	Davids ,S (Stephanie)	7	5.5	242.9	4	4	425	3	1.5	0	0	0	0
1	Davids ,S (Stephanie)	7	1104.9	1347.7	4	1104.2	1529.9	3	1165.9	1104.9	0	0	0
2	Willemse ,N (Neveah)	6	5	283.3	4	4	425	2	1	0	0	0	0
2	Willemse ,N (Neveah)	6	1157.9	1441.2	4	1147.5	1582.9	2	1162.8	1157.9	0	0	0
3	Kleinbooi ,R (Riley)	6	4	141.7	3	3	425	3	1	-141.7	0	0	0
3	Kleinbooi ,R (Riley)	6	1170.1	1311.8	3	1130.4	1595.1	3	1174.3	1028.5	0	0	0
4	Du Toit ,S (Shanika)	5	1	-255	2	0	-425	3	1	-141.7	0	0	0
4	Du Toit ,S (Shanika)	5	1294.2	1039.2	2	1292.3	869.2	3	1275.2	1152.5	0	0	0
5	Van Zyl ,M (Maria Elizabeth)	4	3.5	318.8	3	2.5	283.3	1	1	425	0	0	0
5	Van Zyl ,M (Maria Elizabeth)	4	1141.4	1460.2	3	1150.4	1424.8	1	1211.2	1566.4	0	0	0
6	Da Silva ,N (Noah Clint)	4	0	-425	2	0	-425	2	0	-425	0	0	0
6	Da Silva ,N (Noah Clint)	4	1195.7	770.7	2	1188.7	770.7	2	1188.1	770.7	0	0	0
7	Van Wyk ,F (Faith)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
7	Van Wyk ,F (Faith)	3	1441.7	1158.3	3	1399.7	1158.3	0	0	0	0	0	0
8	Ramonyaluoe ,M (Madalitso)	3	0	-425	3	0	-425	0	0	0	0	0	0
8	Ramonyaluoe ,M (Madalitso)	3	1390.7	965.7	3	1372.4	965.7	0	0	0	0	0	0
9	Coetzee ,S (Sean)	3	3	425	3	3	425	0	0	0	0	0	0
9	Coetzee ,S (Sean)	3	1083.6	1508.6	3	1073.6	1508.6	0	0	0	0	0	0
10	Swanepoel ,M (Mariaan)	3	3	425	2	2	425	1	1	425	0	0	0
10	Swanepoel ,M (Mariaan)	3	1102.9	1527.9	2	1147.9	1527.9	1	1018.5	1527.9	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Williams, M (Mackenzy)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms