PLAYER PAGE

Mienje Grobbelaar

2140158377
Tshwane (GTP)
Personal
Main rating
Rating 1610.1
K-factor 28
Floor 1127
Highest 1651.1 (2026-01-01)
Min/Max +/- allowed 87
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1555
Final +/- 0
New Rating
()
Rating 1610.1
K-factor 28
Floor 1127
Highest 1651.1 (2026-01-01)
Min/Max +/- allowed 87.2
Standard rating
Rating 1603.6
K-factor 28
Floor 1138.6
Highest 1653.8 (2026-01-01)
Min/Max +/- allowed 86.9
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1555
Final +/- 0
New Rating
()
Rating 1603.6
K-factor 28
Floor 1138.6
Highest 1653.8 (2026-01-01)
Min/Max +/- allowed 86.9
Rapid 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
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
No tournaments found.
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 2026 JMCA Open Chess Tournament (B) Standard 2026-08-15 2026-08-15 Tshwane (GTP) 5 1610.1 5 2 1484.8 -20.6 Details
2 2026 Etienne Lewis (U14) Standard 2026-08-08 2026-08-10 Tshwane (GTP) 7 1610.1 7 4.5 1586.7 -7.8 Details
3 2026 Menlo Open (U14) Standard 2026-07-25 2026-07-25 Tshwane (GTP) 5 1610.1 5 3.5 1687.8 9.1 Details
4 4th Khelo India - LCA Chess Tournament 2026 (D) Standard 2026-07-12 2026-07-12 Johannesburg Metro (GJM) 5 1631.3 5 3 1534.2 -2 Details
5 2026 D4 District Individuals (U12 Girls) Standard 2026-05-30 2026-05-30 Tshwane (GTP) 5 1602.7 5 5 1719.9 17.8 Details
6 2026 Africa Youth Chess Championship Classical 2026-05-15 2026-05-21 Uganda (UGA) 9 1577.2 9 6 1653.4 21.6 Details
7 2026 Milos Ristic Teams Open (Junior) Standard 2026-05-02 2026-05-02 Tshwane (GTP) 5 1577.2 5 3 1597.7 3.9 Details
8 South African Junior Closed Chess Championship 2026 (U12 Girls) Classical 2026-03-28 2026-04-02 Bojanala Platina (NBR) 9 1490 9 7 1784.4 88.3 Details
9 2026 Blou Bull Chess Tournament (B) Standard 2026-02-21 2026-02-21 Tshwane (GTP) 5 1546.7 5 2 1424.1 -15.7 Details
10 2026 AHS Chess Tournament (B) Standard 2026-02-28 2026-02-28 Tshwane (GTP) 5 1546.7 5 1 1254 -40.9 Details
11 2026 Piet Robbertse Open Chess Tournament (B) Standard 2026-02-07 2026-02-08 Tshwane (GTP) 5 1633.4 5 2 1487.2 -15.2 Details
12 2026 Tshwane Chess Registration Tournament (B) Standard 2026-01-31 2026-01-31 Tshwane (GTP) 5 1633.4 5 0.5 1208.4 -42.2 Details
13 2025 Mzansi Individual Championships (U12 Girls) Classical 2025-12-17 2025-12-20 Nelson Mandela Bay (ENM) 6 1571.4 5 3.5 1657.9 9.4 Details
14 2025 Mzansi Inter Provincial Team Championships (U12 Combined) Standard 2025-12-15 2025-12-17 Nelson Mandela Bay (ENM) 6 1571.4 6 5 1721.9 17.8 Details
15 Gauteng Inter-Region at Emerald Resort 2025 (U12 Girls) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 1571.4 5 4 1631 7.5 Details
16 2025 Centurion Chess Open Tournament (U12) Standard 2025-09-27 2025-09-27 Tshwane (GTP) 5 1603.7 5 4 1583.3 -1 Details
17 2025 Tshwane South School District CLOSED League Championship (U11A) Standard 2025-08-15 2025-08-15 Tshwane (GTP) 5 1512 5 5 1832.6 32 Details
18 2025 Etienne Lewis Closed Chess Tournament (U12) Standard 2025-08-08 2025-08-10 Tshwane (GTP) 7 1512 7 4.5 1553.2 5.6 Details
19 2025 Wynie Robbertse Chess Tournament (U12) Standard 2025-07-19 2025-07-19 Tshwane (GTP) 5 1489.3 5 3 1421.5 -5.8 Details
20 South African Open 2025 (U12 Girls) Classical 2025-07-03 2025-07-05 Johannesburg Metro (GJM) 5 1489.3 5 4 1665 20 Details
21 Third Knight Riders Junior Open 2025 (B+C) Standard 2025-06-22 2025-06-22 Johannesburg Metro (GJM) 5 1478.2 5 3 1349.4 -13.1 Details
22 2025 Elise Steenkamp Open Chess Tournament (Bishop) Standard 2025-06-14 2025-06-15 Tshwane (GTP) 5 1478.2 5 4 1635.3 18.2 Details
23 2025 Tshwane South School District Individual Finals (D4) (U11 Girls) Standard 2025-05-10 2025-05-10 Tshwane (GTP) 5 1413.9 5 4 1628.3 21.7 Details
24 2025 Silver Lakes Chess Club Open Chess Tournament (U12) Standard 2025-05-03 2025-05-03 Tshwane (GTP) 5 1413.9 5 3.5 1610.7 18.4 Details
25 Lubowski Open 2025 (C) Standard 2025-03-21 2025-03-22 Tshwane (GTP) 5 1483.7 5 1 1194.9 -32.7 Details
26 2025 Chris Greyling Open Chess Tournament (U12) Standard 2025-03-15 2025-03-15 Tshwane (GTP) 5 1483.7 5 2.5 1376.1 -9.6 Details
27 AHS Open Chess Tournament 2025 (U12) Standard 2025-03-01 2025-03-01 Tshwane (GTP) 5 1483.7 5 3 1476.6 -1.3 Details
28 Constantiapark Open 2025 (U12) Standard 2025-02-15 2025-02-15 Tshwane (GTP) 5 1475.9 5 4 1626.4 14.1 Details
29 2025 Blou Bul Open Chess Tournament (C) Standard 2025-02-08 2025-02-08 Tshwane (GTP) 5 1475.9 5 2 1295.3 -16.8 Details
30 2025 Tshwane Chess OPEN Registration Tournament (U12) Standard 2025-01-25 2025-01-25 Tshwane (GTP) 5 1416.1 5 4 1591.9 16.6 Details
31 Gauteng Inter-Region at UJ 2024 (U12 Girls) Standard 2024-12-07 2024-12-08 Johannesburg Metro (GJM) 5 1392.4 5 3.5 1503.3 13.1 Details
32 Lardies Ope 2024 (U12) Standard 2024-10-26 2024-10-26 Tshwane (GTP) 5 1383.4 5 3.5 1441.9 5 Details
33 2024 Tuks Open Chess Tournament (U12) Standard 2024-09-28 2024-09-28 Tshwane (GTP) 5 1359.4 5 3 1471.4 10.1 Details
34 2024 Etienne Lewis (U12) Standard 2024-08-30 2024-09-01 Tshwane (GTP) 7 1359.4 7 4 1373.8 3.2 Details
35 2024 Jacaranda Round Robin Open Chess Tournament (E) Standard 2024-08-17 2024-08-17 Tshwane (GTP) 5 1385.1 5 1 1114.8 -27.1 Details
36 D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) Standard 2024-08-03 2024-08-03 Tshwane (GTP) 5 1385.1 5 3.5 1509.7 12.8 Details
37 Eureka Open 27 July 2024 (G) Standard 2024-07-27 2024-07-27 Sedibeng (GSV) 5 1369 5 3.5 1432.2 5.6 Details
38 Menlopark Open Chess Tournament 2024 (U12) Standard 2024-07-13 2024-07-13 Tshwane (GTP) 5 1369 5 3 1389.2 2.8 Details
39 2024 African Youth Chess Championship Classical 2024-06-16 2024-06-22 Tshwane (GTP) 9 1370.8 9 5 1397.6 4.8 Details
40 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (D) Standard 2024-06-01 2024-06-01 Tshwane (GTP) 5 1370.8 5 3 1303.4 -5.8 Details
41 2024 Tshwane South School District CLOSED Individual Championships (U11 Girls) Standard 2024-05-11 2024-05-11 Tshwane (GTP) 5 1322.2 5 3.5 1459.7 12.8 Details
42 South African Junior Closed Chess Championship 2024 (U10 Girls) Classical 2024-04-27 2024-05-01 Ekurhuleni (GE) 9 1322.2 9 5 1385.7 14.2 Details
43 2024 Lubowski Open Chess Tournament (D2) Standard 2024-03-23 2024-03-24 Tshwane (GTP) 5 1340.8 5 3 1251.7 -10.3 Details
44 2024 Constantiapark Open (D2) Standard 2024-02-17 2024-02-17 Tshwane (GTP) 5 1363.5 5 2.5 1240.9 -12.6 Details
45 2024 Tshwane Chess OPEN Registration Tournament (D1) Standard 2024-01-27 2024-01-27 Tshwane (GTP) 5 1390.4 5 2 1108.9 -26.4 Details
46 2024 Gauteng Inter-Region Chess Championship (U10B) Standard 2024-01-13 2024-01-14 Tshwane (GTP) 5 1390.4 5 4 1484.9 11.4 Details
47 Lardies Open Tournament 2023 (D2) Standard 2023-10-28 2023-10-28 Tshwane (GTP) 5 1384.3 5 2 1113.1 -25.6 Details
48 2023 Gauteng Noord (E) Standard 2023-10-14 2023-10-14 Tshwane (GTP) 5 1384.3 5 5 1635.1 28.7 Details
49 2023 Centurion Chess Open (E) Standard 2023-09-23 2023-09-23 Tshwane (GTP) 5 1309.2 5 3 1322.3 0.7 Details
50 2023 Alekhine Open Tournament (E+F) Standard 2023-09-09 2023-09-09 Tshwane (GTP) 5 1309.2 5 4 1585.5 31.3 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 70
Wins 35
Draws 9
Losses 26
White 33
Black 37
White wins 18
Black wins 17
Score 39.5
Percent 56.4
Dp 54.6
AOR 1503
Performance 1557.7
Game statistics (History)
Games 294
Wins 174
Draws 21
Losses 99
White 146
Black 148
White wins 88
Black wins 86
Score 184.5
Percent 62.8
Dp 108.4
AOR 1367.6
Performance 1476
Rankings (Main)
National
Overall 1010
Gender 79
Age group 68
Gender/Age 11
Provincial
Overall 380
Gender 33
Age group 23
Gender/Age 4
Regional
Overall 145
Gender 10
Age group 8
Gender/Age 2
Rankings (Standard)
National
Overall 963
Gender 82
Age group 74
Gender/Age 14
Provincial
Overall 377
Gender 33
Age group 25
Gender/Age 4
Regional
Overall 146
Gender 9
Age group 8
Gender/Age 2
Rankings (Rapid)
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
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 0
Score 0
Percent 0
Aor 0
Dp 0
Prat 0
Performance ()
Games 70
Score 39.5
Percent 56.4
Aor 1503
Dp 54.6
Prat 1557.7
Performance (12 months)
Games 91
Score 56
Percent 61.5
Aor 1481.4
Dp 98.1
Prat 1579.4
Performance (History)
Games 294
Score 184.5
Percent 62.8
Aor 1367.6
Dp 108.4
Prat 1476
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Boshoff, M (Milah) 7 4 3 2023 Etienne Lewis Closed Tournament (U10) 2026 Etienne Lewis (U14) Details
Overall 2 Du Plessis, M (Mia) 4 1 3 2023 Etienne Lewis Closed Tournament (U10) 2026 Etienne Lewis (U14) Details
Overall 3 Smit, J (Juanru) 4 2 2 2023 Woman's Day Open Chess Tournament (Bishop) 2026 Piet Robbertse Open Chess Tournament (B) Details
Overall 4 Van Zyl, S (Sanli) 4 0 4 2025 Silver Lakes Chess Club Open Chess Tournament (U12) South African Junior Closed Chess Championship 2026 (U12 Girls) Details
Overall 5 Marais, L (Luke) 3 2 1 2023 Etienne Lewis Closed Tournament (U10) 2023 Alekhine Open Tournament (E+F) Details
Standard 1 Boshoff, M (Milah) 7 4 3 2023 Etienne Lewis Closed Tournament (U10) 2026 Etienne Lewis (U14) Details
Standard 2 Van Zyl, S (Sanli) 4 0 4 2025 Silver Lakes Chess Club Open Chess Tournament (U12) South African Junior Closed Chess Championship 2026 (U12 Girls) Details
Standard 3 Du Plessis, M (Mia) 4 1 3 2023 Etienne Lewis Closed Tournament (U10) 2026 Etienne Lewis (U14) Details
Standard 4 Smit, J (Juanru) 4 2 2 2023 Woman's Day Open Chess Tournament (Bishop) 2026 Piet Robbertse Open Chess Tournament (B) Details
Standard 5 Truscott, A (Ane) 3 2 1 2024 Tshwane South School District CLOSED Individual Championships (U11 Girls) 2026 Menlo Open (U14) Details