PLAYER PAGE

Mari Greeff

2140148829
Eden (WEG)
Personal
Main rating
Rating 1697.5
K-factor 28
Floor 1273.1
Highest 1773.1 (2025-08-01)
Min/Max +/- allowed 73
Rating Change
()
Games 11
Score 1
We 4
SWe -3
Temp +/- -84.1
Penalties 0
Weight perform 1550.5
Final +/- -73.3
New Rating
()
Rating 1624.2
K-factor 28
Floor 1273.1
Highest 1773.1 (2025-08-01)
Min/Max +/- allowed 73.3
Standard rating
Rating 1729.3
K-factor 28
Floor 1263.9
Highest 1763.9 (2025-08-01)
Min/Max +/- allowed 74.3
Rating Change
()
Games 11
Score 1
We 4.39
SWe -3.39
Temp +/- -94.8
Penalties 0
Weight perform 1598.4
Final +/- -74.3
New Rating
()
Rating 1655
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 1415.4
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 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
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 George Trials 2 2026 (U13 Girls) Standard 2026-02-14 2026-02-14 Eden (WEG) 5 1676.9 5 5 1788.6 0 Details
2 George Trials 1 2026 (U13 Girls) Standard 2026-01-31 2026-01-31 Eden (WEG) 5 1676.9 4 3.5 1708.6 0 Details
3 Laerskool George Suid 2025 (Ope) Rapid 2025-10-25 2025-10-25 Eden (WEG) 5 1697.7 4 2 1332.1 0 Details
4 UCT Open Chess Championship 2025 (U12) Rapid 2025-10-11 2025-10-11 Cape Town (WCT) 6 1731.4 6 2.5 1408.4 0 Details
5 Western Cape Schools - Top Schools 2025 (U13) Standard 2025-09-06 2025-09-07 Overberg (WOS) 6 1755.9 6 4 1568.3 0 Details
6 Eden Top Schools 2025 (U13) Standard 2025-08-16 2025-08-16 Eden (WEG) 5 1773.1 5 4 1546.1 0 Details
7 George Top Schools 2025 (U13) Standard 2025-07-26 2025-07-26 Eden (WEG) 5 1761.1 5 5 1789 0 Details
8 2025 WC Rural Cup (U12) Standard 2025-06-14 2025-06-15 Eden (WEG) 6 1744.6 6 5.5 1826 0 Details
9 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 0 Details
10 Southern Knights Rapid 2025 (C) Rapid 2025-05-03 2025-05-03 Eden (WEG) 7 1694.2 7 7 1864.1 0 Details
11 Eden Chess Trials 2 2025 (U12) Standard 2025-03-15 2025-04-12 Eden (WEG) 10 1661.4 10 8 1680.7 0 Details
12 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 0 Details
13 Eden Schools Chess Trials 1 2025 (U11 Girls) Standard 2025-03-08 2025-03-08 Eden (WEG) 5 1550.1 5 5 1776.1 0 Details
14 George Schools Chess Trials 3 2025 (U11 Girls) Standard 2025-03-01 2025-03-01 Eden (WEG) 5 1550.1 5 5 1759.5 0 Details
15 Eden Rapid 2025 (B) Rapid 2025-02-23 2025-02-23 Eden (WEG) 6 1490.3 6 4.5 1618 0 Details
16 Loerie Skaaktoernooi 2025 Rapid 2025-02-22 2025-02-22 Eden (WEG) 5 1490.3 5 3 1536.8 0 Details
17 George Schools Chess Trials 2 2025 (U11 Girls) Standard 2025-02-15 2025-02-15 Eden (WEG) 5 1490.3 4 4 1742 0 Details
18 George Schools Chess Trials 1 2025 (U11 Girls) Standard 2025-02-01 2025-02-01 Eden (WEG) 5 1490.3 5 4 1529.9 0 Details
19 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 0 Details
20 Eden Closed 2024 (Ladies) Standard 2024-11-23 2024-11-24 Eden (WEG) 5 1490.5 5 3 1463 0 Details
21 Eden Chess Union League 2024 (1st Division) Standard 2024-10-12 2024-10-12 Eden (WEG) 5 1516 5 2 1344.7 0 Details
22 Western Cape Top Schools Championship 2024 (U11 Girls) Standard 2024-08-30 2024-09-01 Eden (WEG) 5 1496.1 5 4 1614.7 0 Details
23 Eden Top Schools 2024 (U11 Girls) Standard 2024-08-17 2024-08-17 Eden (WEG) 5 1469.3 4 4 1680.7 0 Details
24 George Primary Top Schools 2024 (U11) Standard 2024-07-20 2024-07-20 Eden (WEG) 5 1502.8 4 0.5 1235.9 0 Details
25 2024 African Youth Chess Championship Classical 2024-06-16 2024-06-22 Tshwane (GTP) 9 1581.8 9 4.5 1323.9 0 Details
26 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 0 Details
27 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 0 Details
28 Eden Chess Trials 2 2024 (U12) Standard 2024-04-13 2024-04-20 Eden (WEG) 10 1592.2 10 6.5 1542.4 0 Details
29 Eden School Chess Trials 1 2024 (U11 Girls) Standard 2024-03-09 2024-03-09 Eden (WEG) 5 1502.1 5 5 1762.4 0 Details
30 George Schools Trials 3 2024 (U11 Girls) Standard 2024-03-02 2024-03-02 Eden (WEG) 5 1502.1 5 4 1587 0 Details
31 Southern Knights Rapid 2024 (Junior) Rapid 2024-02-24 2024-02-24 Eden (WEG) 6 1414.4 6 4 1464.4 0 Details
32 George Schools Trials 2 2024 (U11 Girls) Standard 2024-02-17 2024-02-17 Eden (WEG) 5 1414.4 5 5 1693 0 Details
33 George Schools Trials 1 2024 (U11 Girls) Standard 2024-02-03 2024-02-03 Eden (WEG) 5 1414.4 5 4 1651.1 0 Details
34 Eden Open 2023 (C) Standard 2023-12-02 2023-12-02 Eden (WEG) 5 1455.6 5 2 1247.7 0 Details
35 2023 Western Cape Rural Cup (U10) Standard 2023-12-09 2023-12-10 Cape Winelands (WCW) 5 1455.6 2 1 1330.8 0 Details
36 Western Cape Club Championships 2023 (Tier 2) Standard 2023-10-21 2023-10-22 Eden (WEG) 5 1486.6 5 3 1297.8 0 Details
37 Mossel Bay Open 2023 (C) Rapid 2023-09-30 2023-09-30 Eden (WEG) 5 1456.8 5 4 1610.2 0 Details
38 Western Cape Top Schools 2023 (U9 Mixed) Standard 2023-09-02 2023-09-03 Cape Winelands (WCW) 6 1456.8 6 4 1525.8 0 Details
39 Pacaltsdorp Chess Club Open 2023 (Development) Rapid 2023-08-26 2023-08-26 Eden (WEG) 6 1469 5 3 1356.3 0 Details
40 Eden Top Schools 2023 (U9 Mix) Standard 2023-08-19 2023-08-19 Eden (WEG) 5 1469 5 4 1447 0 Details
41 Top Schools 2023 (U9) Standard 2023-07-29 2023-07-29 Eden (WEG) 5 1459.2 5 4 1511.7 0 Details
42 Western Cape PS Individuals 2023 (U9 Girls) Standard 2023-05-05 2023-05-06 Cape Town (WCT) 6 1408.3 6 5 1499.1 0 Details
43 Eden Trials 2+3 2023 (U10) Standard 2023-04-15 2023-05-13 Eden (WEG) 10 1408.3 9 6 1428.5 0 Details
44 George Chess Club Winter Open 2023 (D) Standard 2023-05-20 2023-05-20 Eden (WEG) 5 1408.3 4 3 1464.4 0 Details
45 Eden Trails 1 2023 (U9 Girls) Standard 2023-03-11 2023-03-11 Eden (WEG) 5 1387.7 5 4.5 1496.6 0 Details
46 George Chess Trials 3 2023 (U9 Girls) Standard 2023-02-25 2023-02-25 Eden (WEG) 5 1284.3 5 5 1606.1 0 Details
47 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 0 Details
48 George Chess Trials 1 2023 (U9 Girls) Standard 2023-01-28 2023-01-28 Eden (WEG) 5 1200 5 5 1625 0 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 20
Wins 9
Draws 1
Losses 10
White 10
Black 10
White wins 5
Black wins 4
Score 9.5
Percent 47.5
Dp -21.2
AOR 1618.6
Performance 1597.3
Game statistics (History)
Games 281
Wins 194
Draws 22
Losses 65
White 138
Black 143
White wins 94
Black wins 100
Score 205
Percent 73
Dp 195.1
AOR 1367.4
Performance 1562.5
Rankings (Main)
National
Overall 505
Gender 29
Age group 14
Gender/Age 2
Provincial
Overall 156
Gender 10
Age group 4
Gender/Age 1
Regional
Overall 17
Gender 2
Age group 2
Gender/Age 1
Rankings (Standard)
National
Overall 385
Gender 22
Age group 9
Gender/Age 2
Provincial
Overall 118
Gender 7
Age group 3
Gender/Age 1
Regional
Overall 7
Gender 1
Age group 1
Gender/Age 1
Rankings (Rapid)
National
Overall 963
Gender 142
Age group 145
Gender/Age 33
Provincial
Overall 483
Gender 82
Age group 74
Gender/Age 20
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 11
Score 1
Percent 9.1
Aor 1817.7
Dp -347.7
Prat 1470
Performance ()
Games 20
Score 9.5
Percent 47.5
Aor 1618.6
Dp -21.2
Prat 1597.3
Performance (12 months)
Games 89
Score 65.5
Percent 73.6
Aor 1463.9
Dp 200.6
Prat 1664.4
Performance (History)
Games 281
Score 205
Percent 73
Aor 1367.4
Dp 195.1
Prat 1562.5
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