PLAYER PAGE

Mienje Grobbelaar

2140158377
Tshwane (GTP)
Personal
Main rating
Rating 1546.7
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 1466.8
Final +/- 0
New Rating
()
Rating 1546.7
K-factor 28
Floor 1127
Highest 1651.1 (2026-01-01)
Min/Max +/- allowed 87.2
Standard rating
Rating 1549.8
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 1466.8
Final +/- 0
New Rating
()
Rating 1549.8
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
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 2026 Blou Bull Chess Tournament (B) Standard 2026-02-21 2026-02-21 Tshwane (GTP) 5 1546.7 5 2 1424.1 -15.8 Details
2 2026 AHS Chess Tournament (B) Standard 2026-02-28 2026-02-28 Tshwane (GTP) 5 1546.7 5 1 1254 -40.9 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 2026 Piet Robbertse Open Chess Tournament (B) Standard 2026-02-07 2026-02-08 Tshwane (GTP) 5 1633.4 5 2 1487.2 0 Details
2 2026 Tshwane Chess Registration Tournament (B) Standard 2026-01-31 2026-01-31 Tshwane (GTP) 5 1633.4 5 0.5 1208.4 0 Details
3 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 0 Details
4 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 0 Details
5 Gauteng Inter-Region at Emerald Resort 2025 (U12 Girls) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 1571.4 5 4 1631 0 Details
6 2025 Centurion Chess Open Tournament (U12) Standard 2025-09-27 2025-09-27 Tshwane (GTP) 5 1603.7 5 4 1583.3 0 Details
7 2025 Tshwane South School District CLOSED League Championship (U11A) Standard 2025-08-15 2025-08-15 Tshwane (GTP) 5 1512 5 5 1832.6 0 Details
8 2025 Etienne Lewis Closed Chess Tournament (U12) Standard 2025-08-08 2025-08-10 Tshwane (GTP) 7 1512 7 4.5 1553.2 0 Details
9 2025 Wynie Robbertse Chess Tournament (U12) Standard 2025-07-19 2025-07-19 Tshwane (GTP) 5 1489.3 5 3 1421.5 0 Details
10 South African Open 2025 (U12 Girls) Classical 2025-07-03 2025-07-05 Johannesburg Metro (GJM) 5 1489.3 5 4 1665 0 Details
11 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 0 Details
12 2025 Elise Steenkamp Open Chess Tournament (Bishop) Standard 2025-06-14 2025-06-15 Tshwane (GTP) 5 1478.2 5 4 1635.3 0 Details
13 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 0 Details
14 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 0 Details
15 Lubowski Open 2025 (C) Standard 2025-03-21 2025-03-22 Tshwane (GTP) 5 1483.7 5 1 1194.9 0 Details
16 2025 Chris Greyling Open Chess Tournament (U12) Standard 2025-03-15 2025-03-15 Tshwane (GTP) 5 1483.7 5 2.5 1376.1 0 Details
17 AHS Open Chess Tournament 2025 (U12) Standard 2025-03-01 2025-03-01 Tshwane (GTP) 5 1483.7 5 3 1476.6 0 Details
18 Constantiapark Open 2025 (U12) Standard 2025-02-15 2025-02-15 Tshwane (GTP) 5 1475.9 5 4 1626.4 0 Details
19 2025 Blou Bul Open Chess Tournament (C) Standard 2025-02-08 2025-02-08 Tshwane (GTP) 5 1475.9 5 2 1295.3 0 Details
20 2025 Tshwane Chess OPEN Registration Tournament (U12) Standard 2025-01-25 2025-01-25 Tshwane (GTP) 5 1416.1 5 4 1591.9 0 Details
21 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 0 Details
22 Lardies Ope 2024 (U12) Standard 2024-10-26 2024-10-26 Tshwane (GTP) 5 1383.4 5 3.5 1441.9 0 Details
23 2024 Tuks Open Chess Tournament (U12) Standard 2024-09-28 2024-09-28 Tshwane (GTP) 5 1359.4 5 3 1471.4 0 Details
24 2024 Etienne Lewis (U12) Standard 2024-08-30 2024-09-01 Tshwane (GTP) 7 1359.4 7 4 1373.8 0 Details
25 2024 Jacaranda Round Robin Open Chess Tournament (E) Standard 2024-08-17 2024-08-17 Tshwane (GTP) 5 1385.1 5 1 1114.8 0 Details
26 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 0 Details
27 Eureka Open 27 July 2024 (G) Standard 2024-07-27 2024-07-27 Sedibeng (GSV) 5 1369 5 3.5 1432.2 0 Details
28 Menlopark Open Chess Tournament 2024 (U12) Standard 2024-07-13 2024-07-13 Tshwane (GTP) 5 1369 5 3 1389.2 0 Details
29 2024 African Youth Chess Championship Classical 2024-06-16 2024-06-22 Tshwane (GTP) 9 1370.8 9 5 1397.6 0 Details
30 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 0 Details
31 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 0 Details
32 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 0 Details
33 2024 Lubowski Open Chess Tournament (D2) Standard 2024-03-23 2024-03-24 Tshwane (GTP) 5 1340.8 5 3 1251.7 0 Details
34 2024 Constantiapark Open (D2) Standard 2024-02-17 2024-02-17 Tshwane (GTP) 5 1363.5 5 2.5 1240.9 0 Details
35 2024 Tshwane Chess OPEN Registration Tournament (D1) Standard 2024-01-27 2024-01-27 Tshwane (GTP) 5 1390.4 5 2 1108.9 0 Details
36 2024 Gauteng Inter-Region Chess Championship (U10B) Standard 2024-01-13 2024-01-14 Tshwane (GTP) 5 1390.4 5 4 1484.9 0 Details
37 Lardies Open Tournament 2023 (D2) Standard 2023-10-28 2023-10-28 Tshwane (GTP) 5 1384.3 5 2 1113.1 0 Details
38 2023 Gauteng Noord (E) Standard 2023-10-14 2023-10-14 Tshwane (GTP) 5 1384.3 5 5 1635.1 0 Details
39 2023 Centurion Chess Open (E) Standard 2023-09-23 2023-09-23 Tshwane (GTP) 5 1309.2 5 3 1322.3 0 Details
40 2023 Alekhine Open Tournament (E+F) Standard 2023-09-09 2023-09-09 Tshwane (GTP) 5 1309.2 5 4 1585.5 0 Details
41 2023 Woman's Day Open Chess Tournament (Bishop) Standard 2023-08-09 2023-08-09 Tshwane (GTP) 5 1275.3 5 4 1507.6 0 Details
42 2023 Etienne Lewis Closed Tournament (U10) Standard 2023-08-25 2023-08-27 Tshwane (GTP) 7 1275.3 7 3 1248.6 0 Details
43 2023 Tshwane South School District CLOSED League Championship (U9) Standard 2023-07-29 2023-07-29 Tshwane (GTP) 5 1200 4 2 1242.2 0 Details
44 2023 Menlo Open Tournament (E) Standard 2023-07-22 2023-07-22 Tshwane (GTP) 5 1200 5 5 1614.8 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 10
Wins 2
Draws 1
Losses 7
White 5
Black 5
White wins 1
Black wins 1
Score 2.5
Percent 25
Dp -212.5
AOR 1560.3
Performance 1347.8
Game statistics (History)
Games 234
Wins 141
Draws 13
Losses 80
White 118
Black 116
White wins 71
Black wins 70
Score 147.5
Percent 63
Dp 110.8
AOR 1335.3
Performance 1446.1
Rankings (Main)
National
Overall 1354
Gender 130
Age group 104
Gender/Age 25
Provincial
Overall 488
Gender 54
Age group 42
Gender/Age 10
Regional
Overall 183
Gender 23
Age group 15
Gender/Age 4
Rankings (Standard)
National
Overall 1229
Gender 121
Age group 98
Gender/Age 24
Provincial
Overall 457
Gender 52
Age group 40
Gender/Age 10
Regional
Overall 176
Gender 21
Age group 15
Gender/Age 4
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 10
Score 2.5
Percent 25
Aor 1560.3
Dp -212.5
Prat 1347.8
Performance (12 months)
Games 83
Score 53.5
Percent 64.5
Aor 1414.6
Dp 122.9
Prat 1537.5
Performance (History)
Games 234
Score 147.5
Percent 63
Aor 1335.3
Dp 110.8
Prat 1446.1
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Smit, J (Juanru) 4 2 2 2023 Woman's Day Open Chess Tournament (Bishop) 2026 Piet Robbertse Open Chess Tournament (B) Details
Overall 2 Boshoff, M (Milah) 4 3 1 2023 Etienne Lewis Closed Tournament (U10) 2026 Piet Robbertse Open Chess Tournament (B) Details
Overall 3 Whittaker, L (Lillian) 3 1 2 2023 Menlo Open Tournament (E) 2025 Mzansi Inter Provincial Team Championships (U12 Combined) Details
Overall 4 Dsouza, E (Ethan) 3 3 0 2023 Centurion Chess Open (E) 2024 Tuks Open Chess Tournament (U12) Details
Overall 5 Van Der Schyff, M (Mila-Ne) 3 2 1 South African Junior Closed Chess Championship 2024 (U10 Girls) Gauteng Inter-Region at Emerald Resort 2025 (U12 Girls) Details
Standard 1 Smit, J (Juanru) 4 2 2 2023 Woman's Day Open Chess Tournament (Bishop) 2026 Piet Robbertse Open Chess Tournament (B) Details
Standard 2 Boshoff, M (Milah) 4 3 1 2023 Etienne Lewis Closed Tournament (U10) 2026 Piet Robbertse Open Chess Tournament (B) Details
Standard 3 Whittaker, L (Lillian) 3 1 2 2023 Menlo Open Tournament (E) 2025 Mzansi Inter Provincial Team Championships (U12 Combined) Details
Standard 4 Rahlaga, K (Kaelo Alupheli) 3 2 1 2023 Tshwane South School District CLOSED League Championship (U9) AHS Open Chess Tournament 2025 (U12) Details
Standard 5 Vermaak, A (Alri) 3 3 0 South African Junior Closed Chess Championship 2024 (U10 Girls) 2025 Tshwane South School District Individual Finals (D4) (U11 Girls) Details