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Johannes Christiaan Corneli Botha

1110118128
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1734.3
K-factor 28
Floor 1234.3
Highest 1734.3 (2026-02-28)
Min/Max +/- allowed 77
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1780.4
Final +/- 0
New Rating
()
Rating 1734.3
K-factor 28
Floor 1234.3
Highest 1734.3 (2026-02-28)
Min/Max +/- allowed 77.5
Standard rating
Rating 1730
K-factor 28
Floor 1230
Highest 1730 (2026-02-28)
Min/Max +/- allowed 77.9
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1823.3
Final +/- 0
New Rating
()
Rating 1730
K-factor 28
Floor 1230
Highest 1730 (2026-02-28)
Min/Max +/- allowed 77.9
Rapid rating
Rating 1307.4
K-factor 36
Floor 807.4
Highest 1388.8 (2022-10-01)
Min/Max +/- allowed 126.7
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1307.4
K-factor 36
Floor 807.4
Highest 1388.8 (2022-10-01)
Min/Max +/- allowed 126.7
Blitz rating
Rating 1362
K-factor 36
Floor 862
Highest 1362 (2025-11-01)
Min/Max +/- allowed 131.6
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1362
K-factor 36
Floor 862
Highest 1362 (2025-11-01)
Min/Max +/- allowed 131.6
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 Grey College Team Championship 2026 (Prestige) Standard 2026-02-20 2026-02-21 Mangaung (FMB) 5 1646.9 5 4 1913.5 0 Details
2 JCC ChessPowerHouse Feb Rapid 2026 (B) Rapid 2026-02-15 2026-02-15 Johannesburg Metro (GJM) 5 1646.9 5 3.5 1616.6 0 Details
3 Ekurhuleni 1st Standard Tournament 2026 (C) Standard 2026-02-14 2026-02-14 Ekurhuleni (GE) 5 1646.9 5 5 1870.7 0 Details
4 EG Janesn Open 2026 (U15) Standard 2026-02-07 2026-02-07 Ekurhuleni (GE) 5 1646.9 5 5 1891.3 0 Details
5 Gauteng Inter-Region at Emerald Resort 2025 (U16 Championship) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 1623.5 5 3 1768 0 Details
6 Goue Liga Blitz 2025 Blitz 2025-10-25 2025-10-25 Johannesburg Metro (GJM) 9 1621.1 9 9 1689.2 0 Details
7 2025 Gauteng Top Schools Teams (U17) Standard 2025-08-30 2025-08-30 Tshwane (GTP) 5 1621.1 5 4 1591 0 Details
8 Laerskool Eligwa Open 20 Sept 2025 (A+B) Standard 2025-09-20 2025-09-20 Sedibeng (GSV) 5 1641 5 2 1355.3 0 Details
9 Tshwane Chess Club Clash 2025 (Open) Standard 2025-09-13 2025-09-13 Tshwane (GTP) 5 1641 5 2 1547.1 0 Details
10 Sedibeng Chess Open 06 Sept 2025 (B) Standard 2025-09-06 2025-09-06 Sedibeng (GSV) 5 1641 4 4 1920.7 0 Details
11 JMC Closed 2025 (U16) Standard 2025-08-09 2025-08-10 Johannesburg Metro (GJM) 5 1613.5 5 4.5 1796.5 0 Details
12 JMC Helpmekaar 2025 (B) Standard 2025-06-01 2025-06-01 Johannesburg Metro (GJM) 5 1603.2 5 4 1682.9 0 Details
13 JMC Crawford Sandton 2025 (B) Standard 2025-05-10 2025-05-10 Johannesburg Metro (GJM) 5 1602.4 5 2.5 1420.6 0 Details
14 2025 Silver Lakes Chess Club Open Chess Tournament (B) Standard 2025-05-03 2025-05-03 Tshwane (GTP) 5 1602.4 5 3.5 1661.2 0 Details
15 South African Junior Closed Chess Championships 2025 (U14 Open) Classical 2025-03-31 2025-04-05 Cape Winelands (WCW) 9 1601.5 9 4 1566.8 0 Details
16 JMC Crawford Ruimsig 2025 (A) Standard 2025-03-01 2025-03-01 Johannesburg Metro (GJM) 5 1606.1 4 1 1501.3 0 Details
17 Grey College Team Championship 2025 (B) Standard 2025-02-21 2025-02-22 Mangaung (FMB) 5 1632.8 5 4 1469 0 Details
18 MCA Welcome 2025 (Expert) Standard 2025-02-15 2025-02-15 Johannesburg Metro (GJM) 5 1632.8 4 1 1571.8 0 Details
19 Gauteng Inter-Region at UJ 2024 (U14 Open) Standard 2024-12-07 2024-12-08 Johannesburg Metro (GJM) 5 1666 5 1.5 1459.8 0 Details
20 Gauteng Top Schools 2024 (U13 Open) Standard 2024-10-04 2024-10-04 Ekurhuleni (GE) 5 1665.3 5 4 1660.4 0 Details
21 Ekurhuleni North Schools Finals - Teams 2024 (U13 Open) Standard 2024-08-03 2024-08-03 Ekurhuleni (GE) 5 1597.4 5 5 1711.1 0 Details
22 Ekurhuleni Trails 3 2024 (U14) Standard 2024-08-24 2024-08-24 Ekurhuleni (GE) 5 1597.4 5 4 1571.5 0 Details
23 Gauteng Schools Individuals Finals 2024 (U13 Boys) Standard 2024-08-16 2024-08-16 Ekurhuleni (GE) 5 1597.4 5 5 1886.6 0 Details
24 Ekurhuleni Trails 2 2024 (U14) Standard 2024-07-27 2024-07-27 Ekurhuleni (GE) 5 1588.7 4 3 1578.4 0 Details
25 AG Visser Open 2024 (C) Standard 2024-06-08 2024-06-08 Sedibeng (GSV) 5 1467.3 5 4 1751 0 Details
26 Ekurhuleni Trails 1 2024 (U14) Standard 2024-06-01 2024-06-01 Ekurhuleni (GE) 5 1467.3 5 4 1595.5 0 Details
27 Ekurhuleni North Primary Schools District Individual Finals 2024 (U13 Boys) Standard 2024-05-11 2024-05-11 Ekurhuleni (GE) 5 1467.3 4 4 1633.4 0 Details
28 South African Junior Closed Chess Championship 2024 (U14 Open) Classical 2024-04-27 2024-05-01 Ekurhuleni (GE) 9 1564.1 9 2 1317.5 0 Details
29 JMC Helpmekaar Kollege Tournament 2024 (B) Standard 2024-05-04 2024-05-04 Johannesburg Metro (GJM) 5 1564.1 5 2.5 1389.1 0 Details
30 Westwood Open 2024 (A) Standard 2024-04-13 2024-04-13 Ekurhuleni (GE) 5 1572.5 4 3 1493.3 0 Details
31 JNW Open - Classic - Crawford 2024 (B) Standard 2024-03-09 2024-03-09 Johannesburg Metro (GJM) 5 1564.8 5 4 1569 0 Details
32 2024 Constantiapark Open (B) Standard 2024-02-17 2024-02-17 Tshwane (GTP) 5 1576.7 5 2.5 1495.4 0 Details
33 2024 Gauteng Inter-Region Chess Championship (U14A) Standard 2024-01-13 2024-01-14 Tshwane (GTP) 5 1581.5 5 3 1656.3 0 Details
34 JMC Kick Off Tournament 2024 (B) Standard 2024-01-28 2024-01-28 Johannesburg Metro (GJM) 5 1581.5 5 2.5 1475.4 0 Details
35 2023 Gauteng Top Schools (U13 Mixed) Standard 2023-08-18 2023-08-18 West Rand (GWR) 5 1530.3 5 5 1795.4 0 Details
36 2023 Ekurhuleni North District Schools Finals (U13) Standard 2023-07-29 2023-07-29 Ekurhuleni (GE) 5 1516.6 5 4 1608.5 0 Details
37 Gauteng Open Arnold Classic 2023 (Open) Standard 2023-05-20 2023-05-21 Tshwane (GTP) 5 1534 4 0 1167.7 0 Details
38 Gauteng Schools Individual Finals 2023 (U13 Boys) Standard 2023-05-26 2023-05-26 Ekurhuleni (GE) 5 1534 5 4 1566.7 0 Details
39 Ekurhuleni North Schools Individual Finals 2023 (U13 Boys) Standard 2023-05-12 2023-05-12 Ekurhuleni (GE) 5 1534 5 5 1699.8 0 Details
40 Ekurhuleni Trials 2 2023 (U14) Standard 2023-04-22 2023-04-22 Ekurhuleni (GE) 5 1569.9 5 4 1553 0 Details
41 Alberton Chess Club Tournament 1 2023 (B) Standard 2023-04-15 2023-04-15 Ekurhuleni (GE) 5 1569.9 5 3 1394.1 0 Details
42 2023 South African Junior Closed Chess Championships (U12 Open) Classical 2023-03-31 2023-04-04 Chess South Africa (CSA) 9 1569.9 9 5 1531.2 0 Details
43 Ekhuruleni Chess Trials 1 2023 (U14) Standard 2023-03-25 2023-03-25 Ekurhuleni (GE) 5 1579.4 5 4 1497.9 0 Details
44 2022 South African Junior Team Chess Championships (U12 Open) Classical 2022-12-04 2022-12-08 4 Knights (4K) 7 1558.1 7 6 1641.9 0 Details
45 Super 8 Skaak 2022 (Seniors) Rapid 2022-10-14 2022-10-14 Bojanala Platina (NBR) 7 1555 6 5 1522.4 0 Details
46 ACB Tournament 2022 (A) Standard 2022-10-07 2022-10-08 Ekurhuleni (GE) 5 1555 5 3 1587.7 0 Details
47 Ekurhuleni Chess Springs Club Open 2022 (C) Standard 2022-09-03 2022-09-03 Ekurhuleni (GE) 5 1575.7 5 3 1429.1 0 Details
48 JMC 2nd Trials 2022 (B) Standard 2022-08-27 2022-08-27 Johannesburg Metro (GJM) 5 1576.9 1 0 900.7 0 Details
49 2022 Gauteng Schools Team Championships (U11 Open) Standard 2022-08-27 2022-08-27 Tshwane (GTP) 5 1576.9 5 4 1520.8 0 Details
50 Ekurhuleni-North Schools Teams 2022 (U11) Standard 2022-08-06 2022-08-06 Ekurhuleni (GE) 5 1576.9 5 5 1740.9 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 17
Draws 1
Losses 2
White 11
Black 9
White wins 9
Black wins 8
Score 17.5
Percent 87.5
Dp 318.8
AOR 1504.3
Performance 1823
Game statistics (History)
Games 348
Wins 236
Draws 14
Losses 98
White 176
Black 172
White wins 121
Black wins 115
Score 243
Percent 69.8
Dp 168.5
AOR 1381.8
Performance 1550.3
Rankings (Main)
National
Overall 378
Gender 357
Age group 24
Gender/Age 22
Provincial
Overall 141
Gender 132
Age group 10
Gender/Age 9
Regional
Overall 54
Gender 50
Age group 5
Gender/Age 4
Rankings (Standard)
National
Overall 379
Gender 358
Age group 27
Gender/Age 25
Provincial
Overall 149
Gender 141
Age group 13
Gender/Age 12
Regional
Overall 53
Gender 50
Age group 6
Gender/Age 5
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 20
Score 17.5
Percent 87.5
Aor 1504.3
Dp 318.8
Prat 1823
Performance (12 months)
Games 82
Score 60
Percent 73.2
Aor 1480.6
Dp 197
Prat 1677.6
Performance (History)
Games 348
Score 243
Percent 69.8
Aor 1381.8
Dp 168.5
Prat 1550.3
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Tema, O (Ofana) 6 5 1 South African Junior Closed Chess Championships 2022 (U12 Open) EG Janesn Open 2026 (U15) Details
Overall 2 Robinson, E (Ethan) 6 5 1 Ekurhuleni-North Schools Finals Indiv 2022 (U11 Boys) Ekurhuleni 1st Standard Tournament 2026 (C) Details
Overall 3 Botha, CA (Cathri Amari) 4 2 2 2024 Constantiapark Open (B) Ekurhuleni 1st Standard Tournament 2026 (C) Details
Overall 4 Kotzee, A (Armand) 4 1 3 2022 Gauteng Schools Individual Chess Championship (U11 Boys) South African Junior Closed Chess Championship 2024 (U14 Open) Details
Overall 5 Kalimashe, T (Tshireletso) 4 2 2 2022 Gauteng Schools Individual Chess Championship (U11 Boys) JCC ChessPowerHouse Feb Rapid 2026 (B) Details
Standard 1 Tema, O (Ofana) 6 5 1 South African Junior Closed Chess Championships 2022 (U12 Open) EG Janesn Open 2026 (U15) Details
Standard 2 Robinson, E (Ethan) 6 5 1 Ekurhuleni-North Schools Finals Indiv 2022 (U11 Boys) Ekurhuleni 1st Standard Tournament 2026 (C) Details
Standard 3 Botha, CA (Cathri Amari) 4 2 2 2024 Constantiapark Open (B) Ekurhuleni 1st Standard Tournament 2026 (C) Details
Standard 4 Deysel, K (Kaleb) 4 2 2 South African Junior Closed Chess Championships 2022 (U12 Open) JMC Crawford Ruimsig 2025 (A) Details
Standard 5 Pillay, Z (Zac) 3 0 3 South African Junior Closed Chess Championships 2022 (U12 Open) 2023 Ekurhuleni North District Schools Finals (U13) Details