Chess South Africa Ratings Database

PLAYER PAGE

Personal

Greeff, M (Mari)

Chess SA id

2140148829

FIDE id

Date of birth

2014-03-28 (U12)

Gender

Female

Region

Eden (WEG)

Citizen

RSA

Titles

WRM

Chess SA registered

Last active game

2025-10-11

Personal details last changed

1900-01-01

Junior GPX Games

92.5

Junior GPX Points

1469.6

Item	Main	Standard	Rapid	Blitz
Rating	1697.6	1714.7	1405.4	1200
Raw rating	1697.6	1714.7	1405.4	1200
Weighted rating	1628	1629.8	1349.7	1200
Weighted performance	1500.7	1594.4	1348.2	0
Floor	1273.1	1263.9	929.7	700
K-factor	28	28	32	36
Min/Max rating change allowed	81.6	79.6	123.8	165.8
Highest rating	1773.1 2025-08-01	1763.9 2025-08-01	1429.7 2025-06-01	1200 2018-10-01
Highest raw rating	1773.1 2025-08-01	1763.9 2025-08-01	1429.7 2025-06-01	1200 2024-03-01
Highest weighted rating	1628 2025-11-01	1617.8 2025-09-30	1349.7 2025-11-01	1200 2018-10-01
Highest weighted performance	1765.3 2025-08-01	1752.6 2024-03-01	1403.1 2023-09-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1697.6	1714.7	1405.4	1200
Analysis
Rating	1697.6	1714.7	1405.4	1200
Raw rating	1697.6	1714.7	1405.4	1200
Weighted rating	1628	1629.8	1349.7
Weighted performance	1500.7	1594.4	1348.2
K-factor	28	28	32	36
Floor	1273.1	1263.9	929.7	700
Max/Min rating change allowed	81.6	79.6	123.8	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	1697.6	1714.7	1405.4	1200
New weighted rating	1637.8	1640.9	1356.5	1200
New weighted performance	1491.7	1584.8	1339.8	0
Temp new rating	1697.6	1714.7	1405.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1697.6	1714.7	1405.4	1200
New K-factor	28	28	32	36
New floor	1273.1	1263.9	929.7	700

Item	Main	Standard	Rapid
	0	0	0
	90	66	24
	90	84	6
	77	67	10
	0	0	0
	0	0	0
History	257	217	40

Games since
	Main 187	Standard 157		Rapid 30		Blitz 0
Gender	Female
Age group	U12
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	325		102		14
Female	16		6		1
U12	14		5		2
U12 Female	2		1		1
Standard
	RSA		Province		Region
Overall	283		81		8
Female	17		5		1
U12	7		3		1
U12 Female	2		1		1
Rapid
	RSA		Province		Region
Overall	509		260		21
Female	64		35		3
U12	74		43		1
U12 Female	16		11		1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 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	90	74.5	82.78	278.6	1406.6	1685.2
Standard	66	57.5	87.12	315.5	1393.2	1708.7
Rapid	24	17	70.83	177.1	1443.4	1620.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	257	193.5	75.29	215	1348.4	1563.4
Standard	217	165.5	76.27	223.3	1340.2	1563.5
Rapid	40	28	70	170	1392.7	1562.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1697.6	1714.7	1405.4	1200
2025-09-30	1731.1	1714.7	1429.7	1200
2025-09-01	1755.9	1743.8	1429.7	1200
2025-08-01	1773.1	1763.9	1429.7	1200
2025-07-01	1761.1	1747.8	1429.7	1200
2025-06-01	1744.6	1738.3	1429.7	1200
2025-05-01	1694.2	1714.6	1327.9	1200
2025-04-01	1661.4	1692	1327.9	1200
2025-03-01	1550.1	1531.5	1327.9	1200
2025-02-01	1490.3	1492.7	1278.4	1200
2025-01-01	1471.8	1473.2	1278.4	1200
2024-12-01	1487.2	1491.7	1278.4	1200
2024-11-01	1490.5	1497	1278.4	1200
2024-10-01	1516	1524.2	1278.4	1200
2024-09-01	1496.1	1504.3	1278.4	1200
2024-08-01	1469.3	1478.3	1278.4	1200
2024-07-01	1502.8	1515.8	1278.4	1200
2024-09-01	1581.8	1585.5	1278.4	1200
2024-05-01	1577.6	1612.1	1278.4	1200
2024-04-01	1592.2	1630.5	1278.4	1200
2024-03-01	1502.1	1494.4	1278.4	1200
2024-02-01	1414.4	1386.9	1268.3	1200
2024-01-01	1414.4	1386.9	1268.3	1200
2023-12-01	1414.4	1386.9	1268.3	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 (U12)	2025-10-11	2025-10-11	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	4	Yes	Analysis
3	Eden Top Schools 2025 (U13)	2025-08-16	2025-08-16	Standard	Eden (WEG)	5	5	4	Yes	Analysis
4	George Top Schools 2025 (U13)	2025-07-26	2025-07-26	Standard	Eden (WEG)	5	5	5	Yes	Analysis
5	2025 WC Rural Cup (U12)	2025-06-14	2025-06-15	Standard	Eden (WEG)	6	6	5.5	Yes	Analysis
6	Western Cape Schools Individual Championship 2025 (U11 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	6	Yes	Analysis
7	Southern Knights Rapid 2025 (C)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	7	7	Yes	Analysis
8	Eden Chess Trials 2 2025 (U12)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	10	8	Yes	Analysis
9	South African Junior Closed Chess Championships 2025 (U12 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	7	Yes	Analysis
10	Eden Schools Chess Trials 1 2025 (U11 Girls)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	5	Yes	Analysis
11	George Schools Chess Trials 3 2025 (U11 Girls)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	5	5	Yes	Analysis
12	Eden Rapid 2025 (B)	2025-02-23	2025-02-23	Rapid	Eden (WEG)	6	6	4.5	Yes	Analysis
13	Loerie Skaaktoernooi 2025	2025-02-22	2025-02-22	Rapid	Eden (WEG)	5	5	3	Yes	Analysis
14	George Schools Chess Trials 2 2025 (U11 Girls)	2025-02-15	2025-02-15	Standard	Eden (WEG)	5	4	4	Yes	Analysis
15	George Schools Chess Trials 1 2025 (U11 Girls)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	5	4	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 (U12)	2025-10-11	2025-10-11	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	4	Yes	Analysis
3	Eden Top Schools 2025 (U13)	2025-08-16	2025-08-16	Standard	Eden (WEG)	5	5	4	Yes	Analysis
4	George Top Schools 2025 (U13)	2025-07-26	2025-07-26	Standard	Eden (WEG)	5	5	5	Yes	Analysis
5	2025 WC Rural Cup (U12)	2025-06-14	2025-06-15	Standard	Eden (WEG)	6	6	5.5	Yes	Analysis
6	Western Cape Schools Individual Championship 2025 (U11 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	6	Yes	Analysis
7	Southern Knights Rapid 2025 (C)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	7	7	Yes	Analysis
8	Eden Chess Trials 2 2025 (U12)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	10	8	Yes	Analysis
9	South African Junior Closed Chess Championships 2025 (U12 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	7	Yes	Analysis
10	Eden Schools Chess Trials 1 2025 (U11 Girls)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	5	Yes	Analysis
11	George Schools Chess Trials 3 2025 (U11 Girls)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	5	5	Yes	Analysis
12	Eden Rapid 2025 (B)	2025-02-23	2025-02-23	Rapid	Eden (WEG)	6	6	4.5	Yes	Analysis
13	Loerie Skaaktoernooi 2025	2025-02-22	2025-02-22	Rapid	Eden (WEG)	5	5	3	Yes	Analysis
14	George Schools Chess Trials 2 2025 (U11 Girls)	2025-02-15	2025-02-15	Standard	Eden (WEG)	5	4	4	Yes	Analysis
15	George Schools Chess Trials 1 2025 (U11 Girls)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	5	4	Yes	Analysis
16	Mzansi Interprovincial Youth Chess Championships 2024 (U12 Girls Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	3.5	Yes	Analysis
17	Eden Closed 2024 (Ladies)	2024-11-23	2024-11-24	Standard	Eden (WEG)	5	5	3	Yes	Analysis
18	Eden Chess Union League 2024 (1st Division)	2024-10-12	2024-10-12	Standard	Eden (WEG)	5	5	2	Yes	Analysis
19	Western Cape Top Schools Championship 2024 (U11 Girls)	2024-08-30	2024-09-01	Standard	Eden (WEG)	5	5	4	Yes	Analysis
20	Eden Top Schools 2024 (U11 Girls)	2024-08-17	2024-08-17	Standard	Eden (WEG)	5	4	4	Yes	Analysis
21	George Primary Top Schools 2024 (U11)	2024-07-20	2024-07-20	Standard	Eden (WEG)	5	4	0.5	Yes	Analysis
22	2024 African Youth Chess Championship	2024-06-16	2024-06-22	Standard	Tshwane (GTP)	9	9	4.5	Yes	Analysis
23	South African Junior Closed Chess Championship 2024 (U10 Girls)	2024-04-27	2024-05-01	Standard	Ekurhuleni (GE)	9	9	6	Yes	Analysis
24	Western Cape PS Individuals Championship 2024 (U11 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	5	Yes	Analysis
25	Eden Chess Trials 2 2024 (U12)	2024-04-13	2024-04-20	Standard	Eden (WEG)	10	10	6.5	Yes	Analysis
26	Eden School Chess Trials 1 2024 (U11 Girls)	2024-03-09	2024-03-09	Standard	Eden (WEG)	5	5	5	Yes	Analysis
27	George Schools Trials 3 2024 (U11 Girls)	2024-03-02	2024-03-02	Standard	Eden (WEG)	5	5	4	Yes	Analysis
28	Southern Knights Rapid 2024 (Junior)	2024-02-24	2024-02-24	Rapid	Eden (WEG)	6	6	4	Yes	Analysis
29	George Schools Trials 2 2024 (U11 Girls)	2024-02-17	2024-02-17	Standard	Eden (WEG)	5	5	5	Yes	Analysis
30	George Schools Trials 1 2024 (U11 Girls)	2024-02-03	2024-02-03	Standard	Eden (WEG)	5	5	4	Yes	Analysis
31	Eden Open 2023 (C)	2023-12-02	2023-12-02	Standard	Eden (WEG)	5	5	2	Yes	Analysis
32	2023 Western Cape Rural Cup (U10)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	2	1	Yes	Analysis
33	Western Cape Club Championships 2023 (Tier 2)	2023-10-21	2023-10-22	Standard	Eden (WEG)	5	5	3	Yes	Analysis
34	Mossel Bay Open 2023 (C)	2023-09-30	2023-09-30	Rapid	Eden (WEG)	5	5	4	Yes	Analysis
35	Western Cape Top Schools 2023 (U9 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
36	Pacaltsdorp Chess Club Open 2023 (Development)	2023-08-26	2023-08-26	Rapid	Eden (WEG)	6	5	3	Yes	Analysis
37	Eden Top Schools 2023 (U9 Mix)	2023-08-19	2023-08-19	Standard	Eden (WEG)	5	5	4	Yes	Analysis
38	Top Schools 2023 (U9)	2023-07-29	2023-07-29	Standard	Eden (WEG)	5	5	4	Yes	Analysis
39	Western Cape PS Individuals 2023 (U9 Girls)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
40	Eden Trials 2+3 2023 (U10)	2023-04-15	2023-05-13	Standard	Eden (WEG)	10	9	6	Yes	Analysis
41	George Chess Club Winter Open 2023 (D)	2023-05-20	2023-05-20	Standard	Eden (WEG)	5	4	3	Yes	Analysis
42	Eden Trails 1 2023 (U9 Girls)	2023-03-11	2023-03-11	Standard	Eden (WEG)	5	5	4.5	Yes	Analysis
43	George Chess Trials 3 2023 (U9 Girls)	2023-02-25	2023-02-25	Standard	Eden (WEG)	5	5	5	Yes	Analysis
44	George Chess Trials 2 2023 (U9 Girls)	2023-02-11	2023-02-11	Standard	Cape Town (WCT)	5	5	4.5	Yes	Analysis
45	George Chess Trials 1 2023 (U9 Girls)	2023-01-28	2023-01-28	Standard	Eden (WEG)	5	5	5	Yes	Analysis

#	Games	Start				End
1	26	Tournament Southern Knights Rapid 2025				Tournament Eden Top Schools 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Booysen, J (Joshua)				Opponent Orpen, K (Kira)
2	22	Tournament George Chess Trials 1 2023				Tournament Eden Trials 2+3 2023
		date 2023-01-28	rnd 1	type Standard	result 1	date 2023-04-15	rnd 3	type Standard	result 1
		Opponent Roux, N (Niqueta)				Opponent Fourie, J (John)
3	16	Tournament Eden Rapid 2025				Tournament Eden Chess Trials 2 2025
		date 2025-02-23	rnd 5	type Rapid	result 1	date 2025-03-15	rnd 4	type Standard	result 1
		Opponent Pentz, J (Jason)				Opponent Du Plessis, T (Thozamile)

#	Games	Start				End
1	22	Tournament George Chess Trials 1 2023				Tournament Eden Trials 2+3 2023
		date 2023-01-28	rnd 1	type Standard	result 1	date 2023-04-15	rnd 3	type Standard	result 1
		Opponent Roux, N (Niqueta)				Opponent Fourie, J (John)
2	19	Tournament Western Cape Schools Individual Championship 2025				Tournament Eden Top Schools 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Bukula, S (Sinofefe)				Opponent Orpen, K (Kira)
3	19	Tournament George Schools Chess Trials 1 2025				Tournament Eden Chess Trials 2 2025
		date 2025-02-01	rnd 5	type Standard	result 1	date 2025-03-15	rnd 4	type Standard	result 1
		Opponent Magomarele, T (Thato)				Opponent Du Plessis, T (Thozamile)

#	Games	Start				End
1	9	Tournament Eden Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-02-23	rnd 5	type Rapid	result 1	date 2025-05-03	rnd 7	type Rapid	result 1
		Opponent Pentz, J (Jason)				Opponent Rens, B (Beauwin)
2	4	Tournament Mossel Bay Open 2023				Tournament Southern Knights Rapid 2024
		date 2023-09-30	rnd 4	type Rapid	result 1	date 2024-02-24	rnd 2	type Rapid	result 1
		Opponent Fredericks, R (Reuel)				Opponent Adams, J (Jay-D)
3	3	Tournament Eden Rapid 2025				Tournament Eden Rapid 2025
		date 2025-02-23	rnd 1	type Rapid	result 1	date 2025-02-23	rnd 3	type Rapid	result 1
		Opponent Etsala-Kourou, J (Josu�)				Opponent Moses, D (Dominique)

No games found.

#	Games	Start				End

#	Games	Start				End
1	16	Tournament Southern Knights Rapid 2025				Tournament 2025 WC Rural Cup
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-06-14	rnd 3	type Standard	result 1
		Opponent Booysen, J (Joshua)				Opponent Colyn, E (Estelanie)
2	14	Tournament George Schools Chess Trials 3 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-01	rnd 1	type Standard	result 1	date 2025-03-15	rnd 4	type Standard	result 1
		Opponent Boshoff, L (Liane)				Opponent Du Plessis, T (Thozamile)
3	9	Tournament 2025 WC Rural Cup				Tournament Eden Top Schools 2025
		date 2025-06-15	rnd 5	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Van Wyk, M (Micaile)				Opponent Orpen, K (Kira)

#	Games	Start				End
1	19	Tournament George Schools Chess Trials 1 2025				Tournament Eden Chess Trials 2 2025
		date 2025-02-01	rnd 5	type Standard	result 1	date 2025-03-15	rnd 4	type Standard	result 1
		Opponent Magomarele, T (Thato)				Opponent Du Plessis, T (Thozamile)
2	9	Tournament 2025 WC Rural Cup				Tournament Eden Top Schools 2025
		date 2025-06-15	rnd 5	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Van Wyk, M (Micaile)				Opponent Orpen, K (Kira)
3	9	Tournament Western Cape Schools Individual Championship 2025				Tournament 2025 WC Rural Cup
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-06-14	rnd 3	type Standard	result 1
		Opponent Bukula, S (Sinofefe)				Opponent Colyn, E (Estelanie)

#	Games	Start				End
1	7	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 7	type Rapid	result 1
		Opponent Booysen, J (Joshua)				Opponent Rens, B (Beauwin)
2	4	Tournament Mossel Bay Open 2023				Tournament Southern Knights Rapid 2024
		date 2023-09-30	rnd 4	type Rapid	result 1	date 2024-02-24	rnd 2	type Rapid	result 1
		Opponent Fredericks, R (Reuel)				Opponent Adams, J (Jay-D)
3	3	Tournament Eden Rapid 2025				Tournament Eden Rapid 2025
		date 2025-02-23	rnd 1	type Rapid	result 1	date 2025-02-23	rnd 3	type Rapid	result 1
		Opponent Etsala-Kourou, J (Josu�)				Opponent Moses, D (Dominique)

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	Botha ,J (Jaylie)	7	6.5	364.3	6	5.5	354.2	1	1	425	0	0	0
1	Botha ,J (Jaylie)	7	1278.8	1643.1	6	1287.7	1632.9	1	1200	1703.8	0	0	0
2	Mpuru ,J (JK)	6	1	-283.3	6	1	-283.3	0	0	0	0	0	0
2	Mpuru ,J (JK)	6	1516.1	1232.8	6	1515.3	1232.8	0	0	0	0	0	0
3	Magomarele ,T (Thato)	6	6	425	6	6	425	0	0	0	0	0	0
3	Magomarele ,T (Thato)	6	1249.2	1674.2	6	1251.6	1674.2	0	0	0	0	0	0
4	Barnard ,M (Marizaan)	5	5	425	5	5	425	0	0	0	0	0	0
4	Barnard ,M (Marizaan)	5	1362.1	1787.1	5	1364.9	1787.1	0	0	0	0	0	0
5	Pringle ,K (Kirsten)	5	5	425	4	4	425	1	1	425	0	0	0
5	Pringle ,K (Kirsten)	5	1439.1	1864.1	4	1440.1	1864.1	1	1181.6	1864.1	0	0	0
6	Marner ,B (Bryan Neil)	5	3	85	2	1	0	3	2	141.7	0	0	0
6	Marner ,B (Bryan Neil)	5	1366.5	1451.5	2	1409	1366.5	3	1220.1	1508.1	0	0	0
7	Lambrechts ,M (Madison)	4	4	425	4	4	425	0	0	0	0	0	0
7	Lambrechts ,M (Madison)	4	1372.3	1797.3	4	1349.6	1797.3	0	0	0	0	0	0
8	Spies ,F (Fanie)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
8	Spies ,F (Fanie)	4	1570.4	1357.9	4	1571.6	1357.9	0	0	0	0	0	0
9	Blignaut ,DC (Dane)	4	0.5	-318.8	3	0	-425	1	0.5	0	0	0	0
9	Blignaut ,DC (Dane)	4	1514.6	1195.8	3	1529.9	1089.6	1	1259	1514.6	0	0	0
10	Brewis ,S (Sienna)	4	2	0	3	2	141.7	1	0	-425	0	0	0
10	Brewis ,S (Sienna)	4	1410.6	1410.6	3	1394.5	1552.2	1	1200	985.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Greeff, M (Mari)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms