Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Thomson-Selibowitz, R (Ryder)
Dob:
2011/04/14 (U14)
Gender:
Male
Chess SA id:
1110134886
FIDE id:
Region:
Johannesburg Metro (GJM)
Citizen:
RSA
Title(s):
Last active:
2024/05/11 (8 days ago)
Ratings
The
Projected values
below are
NOT
the actual and official values as calculated by the Ratings Bureau.
Main
Standard
Rapid
Blitz
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1409.6
Curent Weighted rating
1317.4
Curent Weighted performance
1379.4
Current official/published rating (highest between Raw, WR and WP)
1409.6
Current floor (min rating allowed)
923.7
Current highest rating achieved
1423.7
Current K-factor
32
Games played this month
10
Score (S)
6.5
Expected score (We)
6.00
Difference (S-We)
0.50
Current Raw change (no limits, including tournament time weight)
13.3
Current min/max change allowed (with limits)
±123.0
Current Raw change used (final)
13.3
Projected new Raw rating
1422.9
Projected new Weighed rating
1329.9
Projected new Weighted performance
1379.4
Projected new official/published rating (highest between new Raw, new WR and new WP)
1422.9
Projected effective change (new Official - current Official)
+13.3
Projected new highest rating
1423.7
Projected new floor
923.7
Projected new K-facor
32
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1383.0
Curent Weighted rating
1312.2
Curent Weighted performance
1353.8
Current official/published rating (highest between Raw, WR and WP)
1383.0
Current floor (min rating allowed)
899.6
Current highest rating achieved
1399.6
Current K-factor
36
Games played this month
10
Score (S)
6.5
Expected score (We)
5.77
Difference (S-We)
0.73
Current Raw change (no limits, including tournament time weight)
26.3
Current min/max change allowed (with limits)
±127.8
Current Raw change used (final)
26.3
Projected new Raw rating
1409.3
Projected new Weighed rating
1322.8
Projected new Weighted performance
1353.8
Projected new official/published rating (highest between new Raw, new WR and new WP)
1409.3
Projected effective change (new Official - current Official)
+26.3
Projected new highest rating
1409.3
Projected new floor
909.3
Projected new K-facor
32
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1255.4
Curent Weighted rating
1205.2
Curent Weighted performance
1190.2
Current official/published rating (highest between Raw, WR and WP)
1255.4
Current floor (min rating allowed)
755.4
Current highest rating achieved
1255.4
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±153.2
Current Raw change used (final)
0.0
Projected new Raw rating
1255.4
Projected new Weighed rating
1210.8
Projected new Weighted performance
1190.2
Projected new official/published rating (highest between new Raw, new WR and new WP)
1255.4
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1255.4
Projected new floor
755.4
Projected new K-facor
36
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1145.6
Curent Weighted rating
1155.6
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1155.6
Current floor (min rating allowed)
755.4
Current highest rating achieved
1145.6
Current K-factor
40
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±179.2
Current Raw change used (final)
0.0
Projected new Raw rating
1145.6
Projected new Weighed rating
1153.8
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1153.8
Projected effective change (new Official - current Official)
-1.8
Projected new highest rating
1145.6
Projected new floor
755.4
Projected new K-facor
40
Tournaments
History
Tournament:
JMC Crawford International Sandton 2024 (C)
Start:
2024/05/11
End:
2024/05/11
Host:
GJM
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
3.5
Main rating:
1409.6
Rating gain/loss:
9.3
Type rating:
1383.0
Rating gain/loss:
17.6
Analysis
Tournament:
JMC Helpmekaar Kollege Tournament 2024 (C)
Start:
2024/05/04
End:
2024/05/04
Host:
GJM
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
3.0
Main rating:
1409.6
Rating gain/loss:
4.0
Type rating:
1383.0
Rating gain/loss:
8.6
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
8
JMC Crawford International Sandton 2024 (C)
2024/05/11
2024/05/11
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.5
1409.6
1383.0
Analysis
7
JMC Helpmekaar Kollege Tournament 2024 (C)
2024/05/04
2024/05/04
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1409.6
1383.0
Analysis
6
First Knight Riders Junior Open 2024 (A+B)
2024/04/20
2024/04/20
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.0
1423.7
1399.6
Analysis
5
JNW Open - Classic - Crawford 2024 (B)
2024/03/09
2024/03/09
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.0
1407.8
1362.3
Analysis
4
JMC Unika School Tournament 2024 (D)
2024/03/02
2024/03/02
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
5.0
1407.8
1362.3
Analysis
3
Gear Up Mzansi Rapid 2024 (Junior)
2024/02/17
2024/02/17
Johannesburg Metro (GJM)
Rapid
35
0.66
5
5
4.5
1371.2
1174.0
Analysis
2
JMC Kick Off Tournament 2024 (D)
2024/01/28
2024/01/28
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1347.7
1328.1
Analysis
1
2024 Gauteng Inter-Region Chess Championship (U14C)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
4.0
1347.7
1328.1
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
20
JMC Crawford International Sandton 2024 (C)
2024/05/11
2024/05/11
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.5
1409.6
1383.0
Analysis
19
JMC Helpmekaar Kollege Tournament 2024 (C)
2024/05/04
2024/05/04
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1409.6
1383.0
Analysis
18
First Knight Riders Junior Open 2024 (A+B)
2024/04/20
2024/04/20
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.0
1423.7
1399.6
Analysis
17
JNW Open - Classic - Crawford 2024 (B)
2024/03/09
2024/03/09
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.0
1407.8
1362.3
Analysis
16
JMC Unika School Tournament 2024 (D)
2024/03/02
2024/03/02
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
5.0
1407.8
1362.3
Analysis
15
Gear Up Mzansi Rapid 2024 (Junior)
2024/02/17
2024/02/17
Johannesburg Metro (GJM)
Rapid
35
0.66
5
5
4.5
1371.2
1174.0
Analysis
14
JMC Kick Off Tournament 2024 (D)
2024/01/28
2024/01/28
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1347.7
1328.1
Analysis
13
2024 Gauteng Inter-Region Chess Championship (U14C)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
4.0
1347.7
1328.1
Analysis
12
Mzansi Summer Blitz 2023
2023/12/09
2023/12/09
Johannesburg Metro (GJM)
Rapid
10
0.29
7
7
3.0
1340.2
1200.3
Analysis
11
Mzansi Spring Rapid 2023
2023/09/02
2023/09/02
Johannesburg Metro (GJM)
Rapid
15
0.39
7
7
2.5
1340.3
1224.4
Analysis
10
Chess Power House 2023 (C)
2023/08/19
2023/08/19
Johannesburg Metro (GJM)
Standard
90
0.94
5
4
3.0
1278.7
1296.4
Analysis
9
JMC Closed Aug 2023 (U14)
2023/08/04
2023/08/06
Johannesburg Metro (GJM)
Standard
90
0.94
6
5
1.0
1278.7
1296.4
Analysis
8
JMC Trinity Little Falls 2023 (D)
2023/07/02
2023/07/02
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.5
1259.9
1271.0
Analysis
7
JNW Open - Trinityhouse Little Falls 2023 (C)
2023/06/24
2023/06/24
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.5
1258.7
1274.2
Analysis
6
Gauteng Open Arnold Classic 2023 (D)
2023/05/20
2023/05/20
Tshwane (GTP)
Standard
60
0.83
5
5
3.5
1236.6
1251.2
Analysis
5
Mzansi Open Blitz 2023
2023/04/29
2023/04/29
Johannesburg Metro (GJM)
Blitz
5
0.18
9
9
2.5
1240.4
1200.0
Analysis
4
JMC 1 St Peters 2023 (D)
2023/03/18
2023/03/18
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1202.8
1200.0
Analysis
3
JNW Open - Crawford 2023 (C)
2023/03/04
2023/03/04
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1202.8
1200.0
Analysis
2
Mzansi Rapid 2023 (Development)
2023/02/04
2023/02/04
Johannesburg Metro (GJM)
Rapid
25
0.54
6
6
5.0
1156.6
1122.8
Analysis
1
JMC Helpmekaar 2021 (U12)
2021/09/06
2021/09/06
Johannesburg Metro (GJM)
Rapid
30
0.60
5
4
0.0
1200.0
1200.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
40
25
4
11
27.0
67.5
148.8
1304.3
1453.1
White
22
11
3
8
12.5
56.8
58.0
1313.9
1371.8
Black
18
14
1
3
14.5
80.6
259.7
1292.6
1552.3
Standard
All
35
21
3
11
22.5
64.3
121.4
1307.2
1428.7
White
20
10
2
8
11.0
55.0
42.5
1308.0
1350.5
Black
15
11
1
3
11.5
76.7
226.7
1306.2
1532.8
Rapid
All
5
4
1
0
4.5
90.0
340.0
1283.8
1623.8
White
2
1
1
0
1.5
75.0
212.5
1372.1
1584.6
Black
3
3
0
0
3.0
100.0
425.0
1224.9
1649.9
Blitz
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
107
54
11
42
59.5
55.6
47.7
1314.3
1361.9
White
56
27
5
24
29.5
52.7
22.8
1318.1
1340.9
Black
51
27
6
18
30.0
58.8
75.0
1310.1
1385.1
Standard
All
69
38
8
23
42.0
60.9
92.4
1286.2
1378.6
White
38
21
3
14
22.5
59.2
78.3
1296.3
1374.6
Black
31
17
5
9
19.5
62.9
109.7
1273.9
1383.5
Rapid
All
29
14
2
13
15.0
51.7
14.7
1363.4
1378.0
White
14
5
2
7
6.0
42.9
-60.7
1366.2
1305.5
Black
15
9
0
6
9.0
60.0
85.0
1360.7
1445.7
Blitz
All
9
2
1
6
2.5
27.8
-188.9
1371.2
1182.3
White
4
1
0
3
1.0
25.0
-212.5
1356.7
1144.2
Black
5
1
1
3
1.5
30.0
-170.0
1382.8
1212.8
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1090130895
Arokiam, E (Ethan)
2
2.0
2
0
0
100.0
1374.9
425.0
1799.9
View list
2
2140145625
Shi, P (Peiqi)
2
2.0
2
0
0
100.0
1282.2
425.0
1707.2
View list
3
1120132213
Williams, J (Joshua)
2
1.5
1
1
0
75.0
1378.7
212.5
1591.2
View list
4
210091697
Botha, A (Andrea)
2
1.0
1
0
1
50.0
1344.2
0.0
1344.2
View list
5
1090146564
Reddy, S (Sushen)
2
1.0
1
0
1
50.0
1208.3
0.0
1208.3
View list
6
211091693
Steyn, A (Anneke)
2
1.0
1
0
1
50.0
1239.3
0.0
1239.3
View list
7
1130148664
Thakur, Y (Yuv)
2
1.0
0
2
0
50.0
1315.6
0.0
1315.6
View list
8
110091691
Barker, R (Ryan)
2
0.0
0
0
2
0.0
1259.6
-425.0
834.6
View list
9
1120152458
Chadalavada, B (Bhaarghavarama)
1
1.0
1
0
0
100.0
1409.6
425.0
1834.6
View list
10
2110154018
Buthelezi, O (Owethu)
1
1.0
1
0
0
100.0
1347.7
425.0
1772.7
View list
11
208071873
Chinoruma, T (Tawana)
1
1.0
1
0
0
100.0
1340.2
425.0
1765.2
View list
12
111092267
D`Alton, E (Ezra)
1
1.0
1
0
0
100.0
1409.6
425.0
1834.6
View list
13
1120113412
Eapen, E (Ethan)
1
1.0
1
0
0
100.0
1409.6
425.0
1834.6
View list
14
1130149118
Duggan, O (Oliver)
1
1.0
1
0
0
100.0
1156.6
425.0
1581.6
View list
15
1120151790
Bijker, X (Xander)
1
1.0
1
0
0
100.0
1347.7
425.0
1772.7
View list
16
1150137310
Albetti, A (Adriano)
1
1.0
1
0
0
100.0
1156.6
425.0
1581.6
View list
17
1120152460
Elangbam, K (Kernick)
1
1.0
1
0
0
100.0
1240.4
425.0
1665.4
View list
18
1140142002
Franklin, G (Gabriel)
1
1.0
1
0
0
100.0
1278.7
425.0
1703.7
View list
19
1110149384
Hale, D (Damian)
1
1.0
1
0
0
100.0
1347.7
425.0
1772.7
View list
20
1070157319
Jafta, V (Vuyo Molvin)
1
1.0
1
0
0
100.0
1258.7
425.0
1683.7
View list