Surname or Chess SA id..
Chess SA Region AOC Mzansi 2026

PLAYER PAGE

Johannes Christiaan Corneli Botha

1110118128
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1734.9
K-factor 28
Floor 1260.7
Highest 1760.7 (2026-06-01)
Min/Max +/- allowed 75
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1669.9
Final +/- 0
New Rating
()
Rating 1734.9
K-factor 28
Floor 1260.7
Highest 1760.7 (2026-06-01)
Min/Max +/- allowed 74.6
Standard rating
Rating 1770.5
K-factor 24
Floor 1306.3
Highest 1806.3 (2026-03-01)
Min/Max +/- allowed 69.9
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1674.4
Final +/- 0
New Rating
()
Rating 1770.5
K-factor 24
Floor 1306.3
Highest 1806.3 (2026-03-01)
Min/Max +/- allowed 69.9
Rapid rating
Rating 1396.7
K-factor 36
Floor 896.7
Highest 1396.7 (2026-06-01)
Min/Max +/- allowed 125.3
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1396.7
K-factor 36
Floor 896.7
Highest 1396.7 (2026-06-01)
Min/Max +/- allowed 125.3
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 Ekurhuleni Open 2026 (A) Standard 2026-05-23 2026-05-23 Ekurhuleni (GE) 5 1760.7 5 2 1773 0.6 Details
2 JMC Helpmekaar 2026 (A) Standard 2026-05-31 2026-05-31 Johannesburg Metro (GJM) 5 1760.7 5 2 1573.6 -26.4 Details
3 JMC Crawford Sandton Rapid 2026 (Open) Rapid 2026-05-09 2026-05-09 Johannesburg Metro (GJM) 5 1748.1 5 4 1866.2 12.6 Details
4 2026 Silver Lakes Open Chess Tournament (A) Standard 2026-03-07 2026-03-07 Tshwane (GTP) 5 1734.3 5 2 1718.5 -3.2 Details
5 Grey College Team Championship 2026 (Prestige) Standard 2026-02-20 2026-02-21 Mangaung (FMB) 5 1646.9 5 4 1913.5 25.7 Details
6 JCC ChessPowerHouse Feb Rapid 2026 (B) Rapid 2026-02-15 2026-02-15 Johannesburg Metro (GJM) 5 1646.9 5 3.5 1616.6 -1.4 Details
7 Ekurhuleni 1st Standard Tournament 2026 (C) Standard 2026-02-14 2026-02-14 Ekurhuleni (GE) 5 1646.9 5 5 1870.7 22.9 Details
8 EG Janesn Open 2026 (U15) Standard 2026-02-07 2026-02-07 Ekurhuleni (GE) 5 1646.9 5 5 1891.3 16.8 Details
9 Gauteng Inter-Region at Emerald Resort 2025 (U16 Championship) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 1623.5 5 3 1768 16.7 Details
10 Goue Liga Blitz 2025 Blitz 2025-10-25 2025-10-25 Johannesburg Metro (GJM) 9 1621.1 9 9 1689.2 4.4 Details
11 2025 Gauteng Top Schools Teams (U17) Standard 2025-08-30 2025-08-30 Tshwane (GTP) 5 1621.1 5 4 1591 -2.8 Details
12 Laerskool Eligwa Open 20 Sept 2025 (A+B) Standard 2025-09-20 2025-09-20 Sedibeng (GSV) 5 1641 5 2 1355.3 -27.7 Details
13 Tshwane Chess Club Clash 2025 (Open) Standard 2025-09-13 2025-09-13 Tshwane (GTP) 5 1641 5 2 1547.1 -8.5 Details
14 Sedibeng Chess Open 06 Sept 2025 (B) Standard 2025-09-06 2025-09-06 Sedibeng (GSV) 5 1641 4 4 1920.7 21.9 Details
15 JMC Closed 2025 (U16) Standard 2025-08-09 2025-08-10 Johannesburg Metro (GJM) 5 1613.5 5 4.5 1796.5 19.5 Details
16 JMC Helpmekaar 2025 (B) Standard 2025-06-01 2025-06-01 Johannesburg Metro (GJM) 5 1603.2 5 4 1682.9 7.3 Details
17 JMC Crawford Sandton 2025 (B) Standard 2025-05-10 2025-05-10 Johannesburg Metro (GJM) 5 1602.4 5 2.5 1420.6 -16.9 Details
18 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 5.1 Details
19 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 -8.2 Details
20 JMC Crawford Ruimsig 2025 (A) Standard 2025-03-01 2025-03-01 Johannesburg Metro (GJM) 5 1606.1 4 1 1501.3 -8.3 Details
21 Grey College Team Championship 2025 (B) Standard 2025-02-21 2025-02-22 Mangaung (FMB) 5 1632.8 5 4 1469 -14.1 Details
22 MCA Welcome 2025 (Expert) Standard 2025-02-15 2025-02-15 Johannesburg Metro (GJM) 5 1632.8 4 1 1571.8 -4.8 Details
23 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 -23.6 Details
24 Gauteng Top Schools 2024 (U13 Open) Standard 2024-10-04 2024-10-04 Ekurhuleni (GE) 5 1665.3 5 4 1660.4 0.5 Details
25 Ekurhuleni North Schools Finals - Teams 2024 (U13 Open) Standard 2024-08-03 2024-08-03 Ekurhuleni (GE) 5 1597.4 5 5 1711.1 12.3 Details
26 Ekurhuleni Trails 3 2024 (U14) Standard 2024-08-24 2024-08-24 Ekurhuleni (GE) 5 1597.4 5 4 1571.5 -1.7 Details
27 Gauteng Schools Individuals Finals 2024 (U13 Boys) Standard 2024-08-16 2024-08-16 Ekurhuleni (GE) 5 1597.4 5 5 1886.6 28.9 Details
28 Ekurhuleni Trails 2 2024 (U14) Standard 2024-07-27 2024-07-27 Ekurhuleni (GE) 5 1588.7 4 3 1578.4 -0.5 Details
29 AG Visser Open 2024 (C) Standard 2024-06-08 2024-06-08 Sedibeng (GSV) 5 1467.3 5 4 1751 28.2 Details
30 Ekurhuleni Trails 1 2024 (U14) Standard 2024-06-01 2024-06-01 Ekurhuleni (GE) 5 1467.3 5 4 1595.5 13.4 Details
31 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 13.3 Details
32 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 -51.4 Details
33 JMC Helpmekaar Kollege Tournament 2024 (B) Standard 2024-05-04 2024-05-04 Johannesburg Metro (GJM) 5 1564.1 5 2.5 1389.1 -17.8 Details
34 Westwood Open 2024 (A) Standard 2024-04-13 2024-04-13 Ekurhuleni (GE) 5 1572.5 4 3 1493.3 -6 Details
35 JNW Open - Classic - Crawford 2024 (B) Standard 2024-03-09 2024-03-09 Johannesburg Metro (GJM) 5 1564.8 5 4 1569 5.5 Details
36 2024 Constantiapark Open (B) Standard 2024-02-17 2024-02-17 Tshwane (GTP) 5 1576.7 5 2.5 1495.4 -8.6 Details
37 2024 Gauteng Inter-Region Chess Championship (U14A) Standard 2024-01-13 2024-01-14 Tshwane (GTP) 5 1581.5 5 3 1656.3 7.5 Details
38 JMC Kick Off Tournament 2024 (B) Standard 2024-01-28 2024-01-28 Johannesburg Metro (GJM) 5 1581.5 5 2.5 1475.4 -11 Details
39 2023 Gauteng Top Schools (U13 Mixed) Standard 2023-08-18 2023-08-18 West Rand (GWR) 5 1530.3 5 5 1795.4 26.7 Details
40 2023 Ekurhuleni North District Schools Finals (U13) Standard 2023-07-29 2023-07-29 Ekurhuleni (GE) 5 1516.6 5 4 1608.5 9.8 Details
41 Gauteng Open Arnold Classic 2023 (Open) Standard 2023-05-20 2023-05-21 Tshwane (GTP) 5 1534 4 0 1167.7 -32.5 Details
42 Gauteng Schools Individual Finals 2023 (U13 Boys) Standard 2023-05-26 2023-05-26 Ekurhuleni (GE) 5 1534 5 4 1566.7 2.7 Details
43 Ekurhuleni North Schools Individual Finals 2023 (U13 Boys) Standard 2023-05-12 2023-05-12 Ekurhuleni (GE) 5 1534 5 5 1699.8 17.1 Details
44 Ekurhuleni Trials 2 2023 (U14) Standard 2023-04-22 2023-04-22 Ekurhuleni (GE) 5 1569.9 5 4 1553 -0.5 Details
45 Alberton Chess Club Tournament 1 2023 (B) Standard 2023-04-15 2023-04-15 Ekurhuleni (GE) 5 1569.9 5 3 1394.1 -17.6 Details
46 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 -7.2 Details
47 Ekhuruleni Chess Trials 1 2023 (U14) Standard 2023-03-25 2023-03-25 Ekurhuleni (GE) 5 1579.4 5 4 1497.9 -7 Details
48 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 15 Details
49 Super 8 Skaak 2022 (Seniors) Rapid 2022-10-14 2022-10-14 Bojanala Platina (NBR) 7 1555 6 5 1522.4 -2.2 Details
50 ACB Tournament 2022 (A) Standard 2022-10-07 2022-10-08 Ekurhuleni (GE) 5 1555 5 3 1587.7 4.5 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 40
Wins 26
Draws 3
Losses 11
White 22
Black 18
White wins 13
Black wins 13
Score 27.5
Percent 68.8
Dp 159.4
AOR 1618.5
Performance 1777.9
Game statistics (History)
Games 368
Wins 245
Draws 16
Losses 107
White 187
Black 181
White wins 125
Black wins 120
Score 253
Percent 68.8
Dp 159.4
AOR 1400.8
Performance 1560.2
Rankings (Main)
National
Overall 430
Gender 403
Age group 31
Gender/Age 27
Provincial
Overall 156
Gender 145
Age group 11
Gender/Age 10
Regional
Overall 65
Gender 60
Age group 5
Gender/Age 4
Rankings (Standard)
National
Overall 305
Gender 287
Age group 22
Gender/Age 20
Provincial
Overall 119
Gender 112
Age group 9
Gender/Age 8
Regional
Overall 48
Gender 44
Age group 5
Gender/Age 4
Rankings (Rapid)
National
Overall 947
Gender 830
Age group 169
Gender/Age 141
Provincial
Overall 178
Gender 153
Age group 25
Gender/Age 19
Regional
Overall 84
Gender 75
Age group 6
Gender/Age 5
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 40
Score 27.5
Percent 68.8
Aor 1618.5
Dp 159.4
Prat 1777.9
Performance (12 months)
Games 78
Score 56
Percent 71.8
Aor 1536.4
Dp 185.3
Prat 1721.7
Performance (History)
Games 368
Score 253
Percent 68.8
Aor 1400.8
Dp 159.4
Prat 1560.2
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Robinson, E (Ethan) 6 5 1 Ekurhuleni-North Schools Finals Indiv 2022 (U11 Boys) Ekurhuleni 1st Standard Tournament 2026 (C) Details
Overall 2 Tema, O (Ofana) 6 5 1 South African Junior Closed Chess Championships 2022 (U12 Open) EG Janesn Open 2026 (U15) Details
Overall 3 Deysel, K (Kaleb) 4 2 2 South African Junior Closed Chess Championships 2022 (U12 Open) JMC Crawford Ruimsig 2025 (A) 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 Robinson, E (Ethan) 6 5 1 Ekurhuleni-North Schools Finals Indiv 2022 (U11 Boys) Ekurhuleni 1st Standard Tournament 2026 (C) Details
Standard 2 Tema, O (Ofana) 6 5 1 South African Junior Closed Chess Championships 2022 (U12 Open) EG Janesn Open 2026 (U15) Details
Standard 3 Deysel, K (Kaleb) 4 2 2 South African Junior Closed Chess Championships 2022 (U12 Open) JMC Crawford Ruimsig 2025 (A) Details
Standard 4 Botha, CA (Cathri Amari) 4 2 2 2024 Constantiapark Open (B) Ekurhuleni 1st Standard Tournament 2026 (C) Details
Standard 5 Dharampall, V (Viraak) 3 0 3 Gauteng Inter-Region at UJ 2024 (U14 Open) Gauteng Inter-Region at Emerald Resort 2025 (U16 Championship) Details