Surname or Chess SA id..
Chess SA Region AOC

PLAYER PAGE

Ryder Thomson-Selibowitz

1110134886
Tshwane (GTP)
Personal
Main rating
Rating 1565.6
K-factor 32
Floor 1065.6
Highest 1565.6 (2026-04-01)
Min/Max +/- allowed 99
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1561.6
Final +/- 0
New Rating
()
Rating 1565.6
K-factor 32
Floor 1065.6
Highest 1565.6 (2026-04-01)
Min/Max +/- allowed 98.5
Standard rating
Rating 1574.9
K-factor 32
Floor 1074.9
Highest 1574.9 (2026-04-01)
Min/Max +/- allowed 97.2
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1561.9
Final +/- 0
New Rating
()
Rating 1574.9
K-factor 32
Floor 1074.9
Highest 1574.9 (2026-04-01)
Min/Max +/- allowed 97.2
Rapid rating
Rating 1273.1
K-factor 36
Floor 773.1
Highest 1273.1 (2025-11-01)
Min/Max +/- allowed 149.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1202.3
Final +/- 0
New Rating
()
Rating 1273.1
K-factor 36
Floor 773.1
Highest 1273.1 (2025-11-01)
Min/Max +/- allowed 149.4
Blitz rating
Rating 1145.8
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 1145.8
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 PBHS Open (B) Standard 2026-04-25 2026-04-25 Tshwane (GTP) 5 1453.9 5 4 1815.5 55.2 Details
2 2026 AHS Chess Tournament (B) Standard 2026-02-28 2026-02-28 Tshwane (GTP) 5 1445.1 5 2 1496 8.8 Details
3 2026 Constantiapark Open Chess Tournament (C) Standard 2026-02-14 2026-02-14 Tshwane (GTP) 5 1442.8 5 3 1483.1 3.2 Details
4 2026 Tshwane Chess Registration Tournament (C2) Standard 2026-01-31 2026-01-31 Tshwane (GTP) 5 1442.8 5 4 1621.1 9.2 Details
5 Pretoria Boys High Annual Closed Chess Championship 2025 Rapid 2025-10-18 2025-10-18 Tshwane (GTP) 5 1449.7 5 3 1353.3 -6.1 Details
6 2025 Gauteng Top Schools Teams (U19) Standard 2025-08-30 2025-08-30 Tshwane (GTP) 5 1449.7 5 2.5 1309.4 -14.3 Details
7 2025 Tshwane South School District CLOSED League Championship (U19A) Standard 2025-08-16 2025-08-16 Tshwane (GTP) 5 1477.8 5 4 1485.3 0.3 Details
8 JMC Closed 2025 (B) Standard 2025-08-09 2025-08-10 Johannesburg Metro (GJM) 5 1477.8 2 0 1018.5 -20.3 Details
9 South African Open 2025 (U16 Open) Classical 2025-07-03 2025-07-05 Johannesburg Metro (GJM) 5 1470.5 5 3 1501.5 4.6 Details
10 CPH May 2025 (B) Standard 2025-05-03 2025-05-03 Johannesburg Metro (GJM) 5 1463.1 5 3.5 1516.5 4.6 Details
11 AHS Open Chess Tournament 2025 (C) Standard 2025-03-01 2025-03-01 Tshwane (GTP) 5 1446.3 5 3.5 1560.6 10.5 Details
12 JMC Kick Off 2025 (B) Standard 2025-02-02 2025-02-02 Johannesburg Metro (GJM) 5 1477.6 4 1.5 1225.2 -19.6 Details
13 Gauteng Inter-Region at UJ 2024 (U14 Open) Standard 2024-12-07 2024-12-08 Johannesburg Metro (GJM) 5 1448.1 5 4 1618.6 18.4 Details
14 Mzansi Summer Rapid 2024 (B) Rapid 2024-10-26 2024-10-26 Johannesburg Metro (GJM) 6 1443.1 6 4 1482 3.1 Details
15 Mzansi Spring Open 2024 (Intermediate) Standard 2024-09-07 2024-09-07 Johannesburg Metro (GJM) 5 1437.3 5 3.5 1482.2 3.7 Details
16 JMC Closed 2024 (C) Standard 2024-08-09 2024-08-11 Johannesburg Metro (GJM) 5 1419.3 5 3.5 1527.5 11.3 Details
17 JNW Rapid - Helpmekaar Kollege 2024 Rapid 2024-07-28 2024-07-28 Johannesburg Metro (GJM) 7 1424.2 7 3 1266.4 -9.9 Details
18 JMC Trinityhouse Randpark Ridge 2024 (C) Standard 2024-07-13 2024-07-13 Johannesburg Metro (GJM) 5 1424.2 5 3 1450.8 3.2 Details
19 JMC NG Weltevreden Church 2024 Rapid 2024-06-29 2024-06-29 Johannesburg Metro (GJM) 7 1424.2 7 4 1486 3.6 Details
20 JMC Trinityhouse Little Falls 2024 (C) Standard 2024-06-02 2024-06-02 Johannesburg Metro (GJM) 5 1422.9 5 3 1423.5 0.8 Details
21 JMC Crawford International Sandton 2024 (C) Standard 2024-05-11 2024-05-11 Johannesburg Metro (GJM) 5 1409.6 5 3.5 1473.5 5.8 Details
22 JMC Helpmekaar Kollege Tournament 2024 (C) Standard 2024-05-04 2024-05-04 Johannesburg Metro (GJM) 5 1409.6 5 3 1442 2.5 Details
23 First Knight Riders Junior Open 2024 (A+B) Standard 2024-04-20 2024-04-20 Johannesburg Metro (GJM) 5 1423.7 5 2 1340.4 -8.8 Details
24 JNW Open - Classic - Crawford 2024 (B) Standard 2024-03-09 2024-03-09 Johannesburg Metro (GJM) 5 1407.8 5 2 1237.1 -15.9 Details
25 JMC Unika School Tournament 2024 (D) Standard 2024-03-02 2024-03-02 Johannesburg Metro (GJM) 5 1407.8 5 5 1678.2 25.9 Details
26 Gear Up Mzansi Rapid 2024 (Junior) Rapid 2024-02-17 2024-02-17 Johannesburg Metro (GJM) 5 1371.2 5 4.5 1623.8 20.1 Details
27 2024 Gauteng Inter-Region Chess Championship (U14C) Standard 2024-01-13 2024-01-14 Tshwane (GTP) 5 1347.7 5 4 1436.3 9.2 Details
28 JMC Kick Off Tournament 2024 (D) Standard 2024-01-28 2024-01-28 Johannesburg Metro (GJM) 5 1347.7 5 3 1393.2 3.8 Details
29 Mzansi Summer Blitz 2023 Blitz 2023-12-09 2023-12-09 Johannesburg Metro (GJM) 7 1340.2 7 3 1473.7 4.2 Details
30 Mzansi Spring Rapid 2023 Rapid 2023-09-02 2023-09-02 Johannesburg Metro (GJM) 7 1340.3 7 2.5 1357.9 0 Details
31 JMC Closed Aug 2023 (U14) Standard 2023-08-04 2023-08-06 Johannesburg Metro (GJM) 6 1278.7 5 1 1156.2 -12.9 Details
32 Chess Power House 2023 (C) Standard 2023-08-19 2023-08-19 Johannesburg Metro (GJM) 5 1278.7 4 3 1543.3 23.3 Details
33 JMC Trinity Little Falls 2023 (D) Standard 2023-07-02 2023-07-02 Johannesburg Metro (GJM) 5 1259.9 5 3.5 1374.2 10.5 Details
34 JNW Open - Trinityhouse Little Falls 2023 (C) Standard 2023-06-24 2023-06-24 Johannesburg Metro (GJM) 5 1258.7 5 2.5 1272.4 0.7 Details
35 Gauteng Open Arnold Classic 2023 (D) Standard 2023-05-20 2023-05-20 Tshwane (GTP) 5 1236.6 5 3.5 1366.5 12.1 Details
36 Mzansi Open Blitz 2023 Blitz 2023-04-29 2023-04-29 Johannesburg Metro (GJM) 9 1240.4 9 2.5 1182.3 -2.1 Details
37 JNW Open - Crawford 2023 (C) Standard 2023-03-04 2023-03-04 Johannesburg Metro (GJM) 5 1202.8 5 3 1318.3 10.6 Details
38 JMC 1 St Peters 2023 (D) Standard 2023-03-18 2023-03-18 Johannesburg Metro (GJM) 5 1202.8 5 3 1301.7 10.3 Details
39 Mzansi Rapid 2023 (Development) Rapid 2023-02-04 2023-02-04 Johannesburg Metro (GJM) 6 1156.6 6 5 1459.5 23.2 Details
40 JMC Helpmekaar 2021 (U12) Rapid 2021-09-06 2021-09-06 Johannesburg Metro (GJM) 5 1200 4 0 816.4 -21.9 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 13
Draws 0
Losses 7
White 11
Black 9
White wins 8
Black wins 5
Score 13
Percent 65
Dp 127.5
AOR 1476.4
Performance 1603.9
Game statistics (History)
Games 208
Wins 106
Draws 31
Losses 71
White 109
Black 99
White wins 56
Black wins 50
Score 121.5
Percent 58.4
Dp 71.5
AOR 1342.2
Performance 1413.7
Rankings (Main)
National
Overall 1321
Gender 1197
Age group 130
Gender/Age 108
Provincial
Overall 476
Gender 422
Age group 44
Gender/Age 35
Regional
Overall 178
Gender 159
Age group 16
Gender/Age 14
Rankings (Standard)
National
Overall 1140
Gender 1024
Age group 123
Gender/Age 101
Provincial
Overall 415
Gender 367
Age group 42
Gender/Age 33
Regional
Overall 154
Gender 138
Age group 15
Gender/Age 13
Rankings (Rapid)
National
Overall 2567
Gender 2099
Age group 502
Gender/Age 387
Provincial
Overall 531
Gender 441
Age group 96
Gender/Age 69
Regional
Overall 53
Gender 46
Age group 8
Gender/Age 8
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 13
Percent 65
Aor 1476.4
Dp 127.5
Prat 1603.9
Performance (12 months)
Games 42
Score 25.5
Percent 60.7
Aor 1393.8
Dp 91.1
Prat 1484.8
Performance (History)
Games 208
Score 121.5
Percent 58.4
Aor 1342.2
Dp 71.5
Prat 1413.7
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Thakur, Y (Yuv) 3 2 1 JMC Trinity Little Falls 2023 (D) JMC Trinityhouse Randpark Ridge 2024 (C) Details
Overall 2 Ngwangwa, N (Nonhlanhla) 3 0 3 JMC Trinityhouse Randpark Ridge 2024 (C) Mzansi Spring Open 2024 (Intermediate) Details
Overall 3 Williams, J (Joshua) 3 1 2 JMC Kick Off Tournament 2024 (D) JNW Rapid - Helpmekaar Kollege 2024 Details
Overall 4 Arokiam, E (Ethan) 3 1 2 Mzansi Spring Rapid 2023 JMC Trinityhouse Little Falls 2024 (C) Details
Overall 5 Adamson, LJ (Luke Jonathan) 2 2 0 Mzansi Spring Rapid 2023 2026 PBHS Open (B) Details
Standard 1 Ngwangwa, N (Nonhlanhla) 3 0 3 JMC Trinityhouse Randpark Ridge 2024 (C) Mzansi Spring Open 2024 (Intermediate) Details
Standard 2 Thakur, Y (Yuv) 2 1 1 JMC Trinity Little Falls 2023 (D) JMC Trinityhouse Randpark Ridge 2024 (C) Details
Standard 3 Arokiam, E (Ethan) 2 1 1 JMC Helpmekaar Kollege Tournament 2024 (C) JMC Trinityhouse Little Falls 2024 (C) Details
Standard 4 Botha, A (Andrea) 2 1 1 JMC Closed Aug 2023 (U14) JMC Helpmekaar Kollege Tournament 2024 (C) Details
Standard 5 Williams, J (Joshua) 2 1 1 JMC Kick Off Tournament 2024 (D) JMC Helpmekaar Kollege Tournament 2024 (C) Details
Rapid 1 Moletsane, O (Oabile) 2 2 0 Gear Up Mzansi Rapid 2024 (Junior) JNW Rapid - Helpmekaar Kollege 2024 Details