PLAYER PAGE

Mari Greeff

2140148829
Eden (WEG)
Personal
Main rating
Rating 1624.2
K-factor 28
Floor 1273.1
Highest 1773.1 (2025-08-01)
Min/Max +/- allowed 73
Rating Change
()
Games 9
Score 6
We 5.01
SWe 0.99
Temp +/- 27.6
Penalties 0
Weight perform 1637.5
Final +/- +27.6
New Rating
()
Rating 1651.8
K-factor 28
Floor 1273.1
Highest 1773.1 (2025-08-01)
Min/Max +/- allowed 73.3
Standard rating
Rating 1655
K-factor 28
Floor 1263.9
Highest 1763.9 (2025-08-01)
Min/Max +/- allowed 74.3
Rating Change
()
Games 9
Score 6
We 5.34
SWe 0.66
Temp +/- 18.6
Penalties 0
Weight perform 1637.5
Final +/- +18.6
New Rating
()
Rating 1673.6
K-factor 28
Floor 1263.9
Highest 1763.9 (2025-08-01)
Min/Max +/- allowed 74.3
Rapid rating
Rating 1379.8
K-factor 32
Floor 929.7
Highest 1429.7 (2025-06-01)
Min/Max +/- allowed 119.5
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1394.7
Final +/- 0
New Rating
()
Rating 1379.8
K-factor 32
Floor 929.7
Highest 1429.7 (2025-06-01)
Min/Max +/- allowed 119.5
Blitz rating
Rating 1200
K-factor 36
Floor 700
Highest 1200 (2018-10-01)
Min/Max +/- allowed 165.8
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1200
K-factor 36
Floor 700
Highest 1200 (2018-10-01)
Min/Max +/- allowed 165.8
Rating Graph
Tournaments
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 South African Junior Closed Chess Championship 2026 (U12 Girls) Classical 2026-03-28 2026-04-02 Bojanala Platina (NBR) 9 1624.2 9 6 1712.9 27.6 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 Eden Schools Trials 1 2026 (U13 Girls) Standard 2026-03-14 2026-03-14 Eden (WEG) 5 1697.5 5 4 1651.6 -4 Details
2 2026 South African Closed Chess Championships (Woman ) Classical 2026-02-21 2026-03-01 Johannesburg Metro (GJM) 11 1697.5 11 1 1470 -84.1 Details
3 George Trials 2 2026 (U13 Girls) Standard 2026-02-14 2026-02-14 Eden (WEG) 5 1676.9 5 5 1788.6 12.3 Details
4 George Trials 1 2026 (U13 Girls) Standard 2026-01-31 2026-01-31 Eden (WEG) 5 1676.9 4 3.5 1708.6 1.5 Details
5 Laerskool George Suid 2025 (Ope) Rapid 2025-10-25 2025-10-25 Eden (WEG) 5 1697.7 4 2 1332.1 -14.9 Details
6 UCT Open Chess Championship 2025 (U12) Rapid 2025-10-11 2025-10-11 Cape Town (WCT) 6 1731.4 6 2.5 1408.4 -24 Details
7 Western Cape Schools - Top Schools 2025 (U13) Standard 2025-09-06 2025-09-07 Overberg (WOS) 6 1755.9 6 4 1568.3 -17.6 Details
8 Eden Top Schools 2025 (U13) Standard 2025-08-16 2025-08-16 Eden (WEG) 5 1773.1 5 4 1546.1 -12.3 Details
9 George Top Schools 2025 (U13) Standard 2025-07-26 2025-07-26 Eden (WEG) 5 1761.1 5 5 1789 8.6 Details
10 2025 WC Rural Cup (U12) Standard 2025-06-14 2025-06-15 Eden (WEG) 6 1744.6 6 5.5 1826 8.5 Details
11 Western Cape Schools Individual Championship 2025 (U11 Girls) Standard 2025-05-17 2025-05-18 Cape Winelands (WCW) 6 1694.2 6 6 1819.1 15.3 Details
12 Southern Knights Rapid 2025 (C) Rapid 2025-05-03 2025-05-03 Eden (WEG) 7 1694.2 7 7 1864.1 13.3 Details
13 Eden Chess Trials 2 2025 (U12) Standard 2025-03-15 2025-04-12 Eden (WEG) 10 1661.4 10 8 1680.7 5.6 Details
14 South African Junior Closed Chess Championships 2025 (U12 Girls) Classical 2025-03-31 2025-04-05 Cape Winelands (WCW) 9 1661.4 9 7 1746.3 17.4 Details
15 Eden Schools Chess Trials 1 2025 (U11 Girls) Standard 2025-03-08 2025-03-08 Eden (WEG) 5 1550.1 5 5 1776.1 21.6 Details
16 George Schools Chess Trials 3 2025 (U11 Girls) Standard 2025-03-01 2025-03-01 Eden (WEG) 5 1550.1 5 5 1759.5 19.9 Details
17 Eden Rapid 2025 (B) Rapid 2025-02-23 2025-02-23 Eden (WEG) 6 1490.3 6 4.5 1618 12 Details
18 Loerie Skaaktoernooi 2025 Rapid 2025-02-22 2025-02-22 Eden (WEG) 5 1490.3 5 3 1536.8 2.2 Details
19 George Schools Chess Trials 2 2025 (U11 Girls) Standard 2025-02-15 2025-02-15 Eden (WEG) 5 1490.3 4 4 1742 19.8 Details
20 George Schools Chess Trials 1 2025 (U11 Girls) Standard 2025-02-01 2025-02-01 Eden (WEG) 5 1490.3 5 4 1529.9 3.3 Details
21 Mzansi Interprovincial Youth Chess Championships 2024 (U12 Girls Championship) Classical 2024-12-16 2024-12-19 Capricorn (LCP) 7 1487.2 7 3.5 1424.3 -9.4 Details
22 Eden Closed 2024 (Ladies) Standard 2024-11-23 2024-11-24 Eden (WEG) 5 1490.5 5 3 1463 -2.1 Details
23 Eden Chess Union League 2024 (1st Division) Standard 2024-10-12 2024-10-12 Eden (WEG) 5 1516 5 2 1344.7 -15.9 Details
24 Western Cape Top Schools Championship 2024 (U11 Girls) Standard 2024-08-30 2024-09-01 Eden (WEG) 5 1496.1 5 4 1614.7 12.4 Details
25 Eden Top Schools 2024 (U11 Girls) Standard 2024-08-17 2024-08-17 Eden (WEG) 5 1469.3 4 4 1680.7 16.8 Details
26 George Primary Top Schools 2024 (U11) Standard 2024-07-20 2024-07-20 Eden (WEG) 5 1502.8 4 0.5 1235.9 -20.9 Details
27 2024 African Youth Chess Championship Classical 2024-06-16 2024-06-22 Tshwane (GTP) 9 1581.8 9 4.5 1323.9 -49.4 Details
28 South African Junior Closed Chess Championship 2024 (U10 Girls) Classical 2024-04-27 2024-05-01 Ekurhuleni (GE) 9 1577.6 9 6 1518.1 -11.4 Details
29 Western Cape PS Individuals Championship 2024 (U11 Girls) Standard 2024-05-04 2024-05-05 West Coast (WCU) 6 1577.6 6 5 1654.8 10.8 Details
30 Eden Chess Trials 2 2024 (U12) Standard 2024-04-13 2024-04-20 Eden (WEG) 10 1592.2 10 6.5 1542.4 -9.1 Details
31 Eden School Chess Trials 1 2024 (U11 Girls) Standard 2024-03-09 2024-03-09 Eden (WEG) 5 1502.1 5 5 1762.4 26.2 Details
32 George Schools Trials 3 2024 (U11 Girls) Standard 2024-03-02 2024-03-02 Eden (WEG) 5 1502.1 5 4 1587 7.6 Details
33 Southern Knights Rapid 2024 (Junior) Rapid 2024-02-24 2024-02-24 Eden (WEG) 6 1414.4 6 4 1464.4 4.3 Details
34 George Schools Trials 2 2024 (U11 Girls) Standard 2024-02-17 2024-02-17 Eden (WEG) 5 1414.4 5 5 1693 28.1 Details
35 George Schools Trials 1 2024 (U11 Girls) Standard 2024-02-03 2024-02-03 Eden (WEG) 5 1414.4 5 4 1651.1 22.4 Details
36 Eden Open 2023 (C) Standard 2023-12-02 2023-12-02 Eden (WEG) 5 1455.6 5 2 1247.7 -20.9 Details
37 2023 Western Cape Rural Cup (U10) Standard 2023-12-09 2023-12-10 Cape Winelands (WCW) 5 1455.6 2 1 1330.8 -4.8 Details
38 Western Cape Club Championships 2023 (Tier 2) Standard 2023-10-21 2023-10-22 Eden (WEG) 5 1486.6 5 3 1297.8 -19.4 Details
39 Mossel Bay Open 2023 (C) Rapid 2023-09-30 2023-09-30 Eden (WEG) 5 1456.8 5 4 1610.2 10.5 Details
40 Western Cape Top Schools 2023 (U9 Mixed) Standard 2023-09-02 2023-09-03 Cape Winelands (WCW) 6 1456.8 6 4 1525.8 8.1 Details
41 Pacaltsdorp Chess Club Open 2023 (Development) Rapid 2023-08-26 2023-08-26 Eden (WEG) 6 1469 5 3 1356.3 -7.4 Details
42 Eden Top Schools 2023 (U9 Mix) Standard 2023-08-19 2023-08-19 Eden (WEG) 5 1469 5 4 1447 -0.3 Details
43 Top Schools 2023 (U9) Standard 2023-07-29 2023-07-29 Eden (WEG) 5 1459.2 5 4 1511.7 6 Details
44 Western Cape PS Individuals 2023 (U9 Girls) Standard 2023-05-05 2023-05-06 Cape Town (WCT) 6 1408.3 6 5 1499.1 11 Details
45 Eden Trials 2+3 2023 (U10) Standard 2023-04-15 2023-05-13 Eden (WEG) 10 1408.3 9 6 1428.5 4.5 Details
46 George Chess Club Winter Open 2023 (D) Standard 2023-05-20 2023-05-20 Eden (WEG) 5 1408.3 4 3 1464.4 3.2 Details
47 Eden Trails 1 2023 (U9 Girls) Standard 2023-03-11 2023-03-11 Eden (WEG) 5 1387.7 5 4.5 1496.6 11.6 Details
48 George Chess Trials 3 2023 (U9 Girls) Standard 2023-02-25 2023-02-25 Eden (WEG) 5 1284.3 5 5 1606.1 32.2 Details
49 George Chess Trials 2 2023 (U9 Girls) Standard 2023-02-11 2023-02-11 Cape Town (WCT) 5 1284.3 5 4.5 1533.4 25.1 Details
50 George Chess Trials 1 2023 (U9 Girls) Standard 2023-01-28 2023-01-28 Eden (WEG) 5 1200 5 5 1625 42.2 Details
Game statistics ( )
Games 0
Wins 0
Draws 0
Losses 0
White 0
Black 0
White wins 0
Black wins 0
Score 0
Percent 0
Dp 0
AOR 0
Performance 0
Game statistics ()
Games 34
Wins 17
Draws 5
Losses 12
White 17
Black 17
White wins 8
Black wins 9
Score 19.5
Percent 57.4
Dp 62.5
AOR 1573.4
Performance 1635.9
Game statistics (History)
Games 295
Wins 202
Draws 26
Losses 67
White 145
Black 150
White wins 97
Black wins 105
Score 215
Percent 72.9
Dp 194.5
AOR 1374.1
Performance 1568.6
Rankings (Main)
National
Overall 857
Gender 66
Age group 50
Gender/Age 8
Provincial
Overall 261
Gender 21
Age group 23
Gender/Age 5
Regional
Overall 42
Gender 4
Age group 9
Gender/Age 2
Rankings (Standard)
National
Overall 668
Gender 47
Age group 33
Gender/Age 5
Provincial
Overall 194
Gender 17
Age group 13
Gender/Age 3
Regional
Overall 25
Gender 3
Age group 5
Gender/Age 1
Rankings (Rapid)
National
Overall 995
Gender 142
Age group 157
Gender/Age 35
Provincial
Overall 485
Gender 81
Age group 78
Gender/Age 21
Regional
Overall 38
Gender 4
Age group 8
Gender/Age 3
Rankings (Blitz)
National
Overall -1
Gender -1
Age group -1
Gender/Age -1
Provincial
Overall -1
Gender -1
Age group -1
Gender/Age -1
Regional
Overall -1
Gender -1
Age group -1
Gender/Age -1
Performance ( )
Games 9
Score 6
Percent 66.7
Aor 1571.2
Dp 141.7
Prat 1712.9
Performance ()
Games 34
Score 19.5
Percent 57.4
Aor 1573.4
Dp 62.5
Prat 1635.9
Performance (12 months)
Games 79
Score 55.5
Percent 70.3
Aor 1478.5
Dp 172.2
Prat 1650.7
Performance (History)
Games 295
Score 215
Percent 72.9
Aor 1374.1
Dp 194.5
Prat 1568.6
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Botha, J (Jaylie) 7 6 1 George Chess Trials 1 2023 (U9 Girls) Western Cape Schools Individual Championship 2025 (U11 Girls) Details
Overall 2 Magomarele, T (Thato) 6 3 3 George Schools Trials 3 2024 (U11 Girls) Eden Schools Chess Trials 1 2025 (U11 Girls) Details
Overall 3 Mpuru, J (JK MoAfrika) 6 3 3 Eden Trials 2+3 2023 (U10) Eden Chess Trials 2 2025 (U12) Details
Overall 4 Blignaut, DC (Dane) 6 1 5 George Schools Trials 1 2024 (U11 Girls) George Trials 2 2026 (U13 Girls) Details
Overall 5 Barnard, M (Marizaan) 6 4 2 George Schools Trials 1 2024 (U11 Girls) George Trials 1 2026 (U13 Girls) Details
Standard 1 Magomarele, T (Thato) 6 3 3 George Schools Trials 3 2024 (U11 Girls) Eden Schools Chess Trials 1 2025 (U11 Girls) Details
Standard 2 Mpuru, J (JK MoAfrika) 6 3 3 Eden Trials 2+3 2023 (U10) Eden Chess Trials 2 2025 (U12) Details
Standard 3 Botha, J (Jaylie) 6 6 0 George Chess Trials 1 2023 (U9 Girls) Western Cape Schools Individual Championship 2025 (U11 Girls) Details
Standard 4 Barnard, M (Marizaan) 6 4 2 George Schools Trials 1 2024 (U11 Girls) George Trials 1 2026 (U13 Girls) Details
Standard 5 Blignaut, DC (Dane) 5 1 4 George Schools Trials 1 2024 (U11 Girls) George Trials 2 2026 (U13 Girls) Details
Rapid 1 Marner, B (Bryan Neil) 3 3 0 Mossel Bay Open 2023 (C) Eden Rapid 2025 (B) Details
Rapid 2 Da Silva, D (Darren) 2 1 1 Pacaltsdorp Chess Club Open 2023 (Development) Mossel Bay Open 2023 (C) Details
Rapid 3 Sampson, E (Eejay) 2 2 0 Mossel Bay Open 2023 (C) Southern Knights Rapid 2024 (Junior) Details