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

PLAYER PAGE

Ryder Thomson-Selibowitz

1110134886
Tshwane (GTP)
Personal
Main rating
Rating 1572
K-factor 32
Floor 1072
Highest 1572 (2026-07-01)
Min/Max +/- allowed 98
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1552.3
Final +/- 0
New Rating
()
Rating 1572
K-factor 32
Floor 1072
Highest 1572 (2026-07-01)
Min/Max +/- allowed 97.6
Standard rating
Rating 1578.7
K-factor 32
Floor 1078.7
Highest 1578.7 (2026-07-01)
Min/Max +/- allowed 96.7
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1552.3
Final +/- 0
New Rating
()
Rating 1578.7
K-factor 32
Floor 1078.7
Highest 1578.7 (2026-07-01)
Min/Max +/- allowed 96.7
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 1183.8
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 Wynie Robbertse Chess Tournament 2026 (B) Standard 2026-06-27 2026-06-27 Tshwane (GTP) 5 1565.6 5 1.5 1413.7 -22.7 Details
2 2026 D4 Central Cluster Individuals (U15 Boys) Standard 2026-05-23 2026-05-23 Tshwane (GTP) 5 1565.6 5 5 1764.6 32.6 Details
3 2026 D4 District Individuals (U15 Boys) Standard 2026-05-30 2026-05-30 Tshwane (GTP) 5 1565.6 5 2.5 1549.9 -3.5 Details
4 2026 PBHS Open (B) Standard 2026-04-25 2026-04-25 Tshwane (GTP) 5 1453.9 5 4 1815.5 55.2 Details
5 2026 AHS Chess Tournament (B) Standard 2026-02-28 2026-02-28 Tshwane (GTP) 5 1445.1 5 2 1496 8.8 Details
6 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
7 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
8 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
9 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
10 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
11 JMC Closed 2025 (B) Standard 2025-08-09 2025-08-10 Johannesburg Metro (GJM) 5 1477.8 2 0 1018.5 -20.3 Details
12 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
13 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
14 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
15 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
16 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
17 Mzansi Summer Rapid 2024 (B) Rapid 2024-10-26 2024-10-26 Johannesburg Metro (GJM) 6 1443.1 6 4 1482 3.1 Details
18 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
19 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
20 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
21 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
22 JMC NG Weltevreden Church 2024 Rapid 2024-06-29 2024-06-29 Johannesburg Metro (GJM) 7 1424.2 7 4 1486 3.6 Details
23 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
24 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
25 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
26 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
27 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
28 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
29 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
30 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
31 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
32 Mzansi Summer Blitz 2023 Blitz 2023-12-09 2023-12-09 Johannesburg Metro (GJM) 7 1340.2 7 3 1473.7 4.2 Details
33 Mzansi Spring Rapid 2023 Rapid 2023-09-02 2023-09-02 Johannesburg Metro (GJM) 7 1340.3 7 2.5 1357.9 0 Details
34 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
35 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
36 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
37 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
38 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
39 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
40 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
41 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
42 Mzansi Rapid 2023 (Development) Rapid 2023-02-04 2023-02-04 Johannesburg Metro (GJM) 6 1156.6 6 5 1459.5 23.2 Details
43 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 35
Wins 20
Draws 4
Losses 11
White 18
Black 17
White wins 12
Black wins 8
Score 22
Percent 62.9
Dp 109.3
AOR 1482.7
Performance 1592
Game statistics (History)
Games 223
Wins 113
Draws 35
Losses 75
White 116
Black 107
White wins 60
Black wins 53
Score 130.5
Percent 58.5
Dp 72.4
AOR 1352.2
Performance 1424.6
Rankings (Main)
National
Overall 1272
Gender 1156
Age group 128
Gender/Age 106
Provincial
Overall 458
Gender 410
Age group 44
Gender/Age 35
Regional
Overall 178
Gender 160
Age group 17
Gender/Age 15
Rankings (Standard)
National
Overall 1131
Gender 1019
Age group 118
Gender/Age 96
Provincial
Overall 415
Gender 370
Age group 41
Gender/Age 32
Regional
Overall 162
Gender 146
Age group 17
Gender/Age 15
Rankings (Rapid)
National
Overall 2607
Gender 2131
Age group 514
Gender/Age 393
Provincial
Overall 552
Gender 450
Age group 104
Gender/Age 73
Regional
Overall 54
Gender 47
Age group 9
Gender/Age 9
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 35
Score 22
Percent 62.9
Aor 1482.7
Dp 109.3
Prat 1592
Performance (12 months)
Games 52
Score 31.5
Percent 60.6
Aor 1419.6
Dp 89.9
Prat 1509.5
Performance (History)
Games 223
Score 130.5
Percent 58.5
Aor 1352.2
Dp 72.4
Prat 1424.6
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Williams, J (Joshua) 3 1 2 JMC Kick Off Tournament 2024 (D) JNW Rapid - Helpmekaar Kollege 2024 Details
Overall 2 Ngwangwa, N (Nonhlanhla) 3 0 3 JMC Trinityhouse Randpark Ridge 2024 (C) Mzansi Spring Open 2024 (Intermediate) Details
Overall 3 Arokiam, E (Ethan) 3 1 2 Mzansi Spring Rapid 2023 JMC Trinityhouse Little Falls 2024 (C) Details
Overall 4 Thakur, Y (Yuv) 3 2 1 JMC Trinity Little Falls 2023 (D) JMC Trinityhouse Randpark Ridge 2024 (C) Details
Overall 5 Lekwape, R (Retshidisitswe) 2 1 1 JNW Rapid - Helpmekaar Kollege 2024 Gauteng Inter-Region at UJ 2024 (U14 Open) Details
Standard 1 Ngwangwa, N (Nonhlanhla) 3 0 3 JMC Trinityhouse Randpark Ridge 2024 (C) Mzansi Spring Open 2024 (Intermediate) Details
Standard 2 Mooki, G (Gomolemo) 2 0 2 2026 Tshwane Chess Registration Tournament (C2) Wynie Robbertse Chess Tournament 2026 (B) Details
Standard 3 Arokiam, E (Ethan) 2 1 1 JMC Helpmekaar Kollege Tournament 2024 (C) JMC Trinityhouse Little Falls 2024 (C) Details
Standard 4 Feuth, A (Alexander) 2 1 1 2026 PBHS Open (B) Wynie Robbertse Chess Tournament 2026 (B) Details
Standard 5 Mkhasibe, NZ (Nobuhle Zandile) 2 0 2 First Knight Riders Junior Open 2024 (A+B) JMC Closed 2024 (C) Details
Rapid 1 Moletsane, O (Oabile) 2 2 0 Gear Up Mzansi Rapid 2024 (Junior) JNW Rapid - Helpmekaar Kollege 2024 Details