PLAYER PAGE

Johannes Christiaan Corneli Botha

1110118128
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1748.1
K-factor 28
Floor 1248.1
Highest 1748.1 (2026-03-01)
Min/Max +/- allowed 76
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1737
Final +/- 0
New Rating
()
Rating 1748.1
K-factor 28
Floor 1248.1
Highest 1748.1 (2026-03-01)
Min/Max +/- allowed 75.9
Standard rating
Rating 1806.3
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 1794.8
Final +/- 0
New Rating
()
Rating 1806.3
K-factor 24
Floor 1306.3
Highest 1806.3 (2026-03-01)
Min/Max +/- allowed 69.9
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 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
2 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
3 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
4 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
5 EG Janesn Open 2026 (U15) Standard 2026-02-07 2026-02-07 Ekurhuleni (GE) 5 1646.9 5 5 1891.3 16.8 Details
6 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
7 Goue Liga Blitz 2025 Blitz 2025-10-25 2025-10-25 Johannesburg Metro (GJM) 9 1621.1 9 9 1689.2 4.4 Details
8 2025 Gauteng Top Schools Teams (U17) Standard 2025-08-30 2025-08-30 Tshwane (GTP) 5 1621.1 5 4 1591 -2.8 Details
9 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
10 Tshwane Chess Club Clash 2025 (Open) Standard 2025-09-13 2025-09-13 Tshwane (GTP) 5 1641 5 2 1547.1 -8.5 Details
11 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
12 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
13 JMC Helpmekaar 2025 (B) Standard 2025-06-01 2025-06-01 Johannesburg Metro (GJM) 5 1603.2 5 4 1682.9 7.3 Details
14 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
15 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
16 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
17 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
18 Grey College Team Championship 2025 (B) Standard 2025-02-21 2025-02-22 Mangaung (FMB) 5 1632.8 5 4 1469 -14.1 Details
19 MCA Welcome 2025 (Expert) Standard 2025-02-15 2025-02-15 Johannesburg Metro (GJM) 5 1632.8 4 1 1571.8 -4.8 Details
20 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
21 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
22 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
23 Ekurhuleni Trails 3 2024 (U14) Standard 2024-08-24 2024-08-24 Ekurhuleni (GE) 5 1597.4 5 4 1571.5 -1.7 Details
24 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
25 Ekurhuleni Trails 2 2024 (U14) Standard 2024-07-27 2024-07-27 Ekurhuleni (GE) 5 1588.7 4 3 1578.4 -0.5 Details
26 AG Visser Open 2024 (C) Standard 2024-06-08 2024-06-08 Sedibeng (GSV) 5 1467.3 5 4 1751 28.2 Details
27 Ekurhuleni Trails 1 2024 (U14) Standard 2024-06-01 2024-06-01 Ekurhuleni (GE) 5 1467.3 5 4 1595.5 13.4 Details
28 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
29 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
30 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
31 Westwood Open 2024 (A) Standard 2024-04-13 2024-04-13 Ekurhuleni (GE) 5 1572.5 4 3 1493.3 -6 Details
32 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
33 2024 Constantiapark Open (B) Standard 2024-02-17 2024-02-17 Tshwane (GTP) 5 1576.7 5 2.5 1495.4 -8.6 Details
34 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
35 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
36 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
37 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
38 Gauteng Open Arnold Classic 2023 (Open) Standard 2023-05-20 2023-05-21 Tshwane (GTP) 5 1534 4 0 1167.7 -32.5 Details
39 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
40 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
41 Ekurhuleni Trials 2 2023 (U14) Standard 2023-04-22 2023-04-22 Ekurhuleni (GE) 5 1569.9 5 4 1553 -0.5 Details
42 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
43 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
44 Ekhuruleni Chess Trials 1 2023 (U14) Standard 2023-03-25 2023-03-25 Ekurhuleni (GE) 5 1579.4 5 4 1497.9 -7 Details
45 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
46 Super 8 Skaak 2022 (Seniors) Rapid 2022-10-14 2022-10-14 Bojanala Platina (NBR) 7 1555 6 5 1522.4 -2.2 Details
47 ACB Tournament 2022 (A) Standard 2022-10-07 2022-10-08 Ekurhuleni (GE) 5 1555 5 3 1587.7 4.5 Details
48 Ekurhuleni Chess Springs Club Open 2022 (C) Standard 2022-09-03 2022-09-03 Ekurhuleni (GE) 5 1575.7 5 3 1429.1 -14.8 Details
49 JMC 2nd Trials 2022 (B) Standard 2022-08-27 2022-08-27 Johannesburg Metro (GJM) 5 1576.9 1 0 900.7 -13.8 Details
50 2022 Gauteng Schools Team Championships (U11 Open) Standard 2022-08-27 2022-08-27 Tshwane (GTP) 5 1576.9 5 4 1520.8 -4 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 25
Wins 19
Draws 1
Losses 5
White 14
Black 11
White wins 10
Black wins 9
Score 19.5
Percent 78
Dp 238
AOR 1564.1
Performance 1802.1
Game statistics (History)
Games 353
Wins 238
Draws 14
Losses 101
White 179
Black 174
White wins 122
Black wins 116
Score 245
Percent 69.4
Dp 164.9
AOR 1387.7
Performance 1552.7
Rankings (Main)
National
Overall 342
Gender 322
Age group 26
Gender/Age 23
Provincial
Overall 132
Gender 122
Age group 11
Gender/Age 10
Regional
Overall 49
Gender 45
Age group 5
Gender/Age 4
Rankings (Standard)
National
Overall 235
Gender 225
Age group 13
Gender/Age 12
Provincial
Overall 94
Gender 90
Age group 8
Gender/Age 7
Regional
Overall 37
Gender 34
Age group 4
Gender/Age 3
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 25
Score 19.5
Percent 78
Aor 1564.1
Dp 238
Prat 1802.1
Performance (12 months)
Games 78
Score 58
Percent 74.4
Aor 1485.9
Dp 207.1
Prat 1693
Performance (History)
Games 353
Score 245
Percent 69.4
Aor 1387.7
Dp 164.9
Prat 1552.7
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 Esterhuizen, JL (Janco) 3 2 1 2022 Gauteng Schools Individual Chess Championship (U11 Boys) Gauteng Top Schools 2024 (U13 Open) Details