Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Joubert, J (Joshua)
Dob:
2015/09/16 (U10)
Gender:
Male
Chess SA id:
1150134895
FIDE id:
Region:
Johannesburg Metro (GJM)
Citizen:
RSA
Title(s):
Last active:
2024/05/11 (14 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
1352.8
Curent Weighted rating
1394.0
Curent Weighted performance
1256.8
Current official/published rating (highest between Raw, WR and WP)
1394.0
Current floor (min rating allowed)
981.6
Current highest rating achieved
1481.6
Current K-factor
32
Games played this month
18
Score (S)
11.0
Expected score (We)
8.58
Difference (S-We)
2.42
Current Raw change (no limits, including tournament time weight)
56.9
Current min/max change allowed (with limits)
±133.4
Current Raw change used (final)
56.9
Projected new Raw rating
1409.7
Projected new Weighed rating
1397.2
Projected new Weighted performance
1256.8
Projected new official/published rating (highest between new Raw, new WR and new WP)
1409.7
Projected effective change (new Official - current Official)
+15.7
Projected new highest rating
1481.6
Projected new floor
981.6
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
1320.7
Curent Weighted rating
1380.1
Curent Weighted performance
1183.1
Current official/published rating (highest between Raw, WR and WP)
1380.1
Current floor (min rating allowed)
978.8
Current highest rating achieved
1478.8
Current K-factor
32
Games played this month
18
Score (S)
11.0
Expected score (We)
8.00
Difference (S-We)
3.00
Current Raw change (no limits, including tournament time weight)
96.0
Current min/max change allowed (with limits)
±139.6
Current Raw change used (final)
96.0
Projected new Raw rating
1416.7
Projected new Weighed rating
1384.3
Projected new Weighted performance
1183.1
Projected new official/published rating (highest between new Raw, new WR and new WP)
1416.7
Projected effective change (new Official - current Official)
+36.6
Projected new highest rating
1478.8
Projected new floor
978.8
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
1148.6
Curent Weighted rating
1026.4
Curent Weighted performance
1070.6
Current official/published rating (highest between Raw, WR and WP)
1148.6
Current floor (min rating allowed)
678.4
Current highest rating achieved
1178.4
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)
±178.4
Current Raw change used (final)
0.0
Projected new Raw rating
1148.6
Projected new Weighed rating
1037.0
Projected new Weighted performance
1070.6
Projected new official/published rating (highest between new Raw, new WR and new WP)
1148.6
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1178.4
Projected new floor
678.4
Projected new K-facor
40
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
1034.2
Curent Weighted rating
1034.2
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1034.2
Current floor (min rating allowed)
678.4
Current highest rating achieved
1034.2
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)
±210.0
Current Raw change used (final)
0.0
Projected new Raw rating
1034.2
Projected new Weighed rating
1034.2
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1034.2
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1034.2
Projected new floor
678.4
Projected new K-facor
40
Tournaments
History
Tournament:
JMC Crawford International Sandton 2024 (U10)
Start:
2024/05/11
End:
2024/05/11
Host:
GJM
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
5.0
Main rating:
1352.8
Rating gain/loss:
68.0
Type rating:
1320.7
Rating gain/loss:
88.3
Analysis
Tournament:
JMC Helpmekaar Kollege Tournament 2024 (U10)
Start:
2024/05/04
End:
2024/05/04
Host:
GJM
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
4.0
Main rating:
1352.8
Rating gain/loss:
32.4
Type rating:
1320.7
Rating gain/loss:
43.8
Analysis
Tournament:
South African Junior Closed Chess Championship 2024 (U10 Open)
Start:
2024/04/27
End:
2024/05/01
Host:
GE
Type:
Standard
Time:
120
Time weight:
1.00
Rounds:
8
Games:
8
Score:
2.0
Main rating:
1352.8
Rating gain/loss:
-43.5
Type rating:
1320.7
Rating gain/loss:
-36.2
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
9
JMC Crawford International Sandton 2024 (U10)
2024/05/11
2024/05/11
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
5.0
1352.8
1320.7
Analysis
8
JMC Helpmekaar Kollege Tournament 2024 (U10)
2024/05/04
2024/05/04
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
4.0
1352.8
1320.7
Analysis
7
South African Junior Closed Chess Championship 2024 (U10 Open)
2024/04/27
2024/05/01
Ekurhuleni (GE)
Standard
120
1.00
9
8
2.0
1352.8
1320.7
Analysis
6
Hermanus Chess Club Open 2024 (Intermediate)
2024/04/20
2024/04/20
Overberg (WOS)
Rapid
20
0.47
7
7
3.5
1374.0
1142.2
Analysis
5
CPH St Andrew's Rapid 2024 (C)
2024/03/30
2024/03/30
Ekurhuleni (GE)
Rapid
20
0.47
5
5
4.5
1342.3
1003.8
Analysis
4
2024 Tshwane Chess AHS Open Chess Tournament (C2)
2024/02/24
2024/02/24
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1408.2
1394.3
Analysis
3
2024 Blou Bul Open Chess Tournament (C)
2024/02/10
2024/02/10
Tshwane (GTP)
Standard
60
0.83
5
5
1.5
1408.2
1394.3
Analysis
2
JMC Kick Off Tournament 2024 (D)
2024/01/28
2024/01/28
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.0
1435.1
1423.4
Analysis
1
2024 Gauteng Inter-Region Chess Championship (U10A)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
4.0
1435.1
1423.4
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
36
JMC Crawford International Sandton 2024 (U10)
2024/05/11
2024/05/11
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
5.0
1352.8
1320.7
Analysis
35
JMC Helpmekaar Kollege Tournament 2024 (U10)
2024/05/04
2024/05/04
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
4.0
1352.8
1320.7
Analysis
34
South African Junior Closed Chess Championship 2024 (U10 Open)
2024/04/27
2024/05/01
Ekurhuleni (GE)
Standard
120
1.00
9
8
2.0
1352.8
1320.7
Analysis
33
Hermanus Chess Club Open 2024 (Intermediate)
2024/04/20
2024/04/20
Overberg (WOS)
Rapid
20
0.47
7
7
3.5
1374.0
1142.2
Analysis
32
CPH St Andrew's Rapid 2024 (C)
2024/03/30
2024/03/30
Ekurhuleni (GE)
Rapid
20
0.47
5
5
4.5
1342.3
1003.8
Analysis
31
2024 Tshwane Chess AHS Open Chess Tournament (C2)
2024/02/24
2024/02/24
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1408.2
1394.3
Analysis
30
2024 Blou Bul Open Chess Tournament (C)
2024/02/10
2024/02/10
Tshwane (GTP)
Standard
60
0.83
5
5
1.5
1408.2
1394.3
Analysis
29
JMC Kick Off Tournament 2024 (D)
2024/01/28
2024/01/28
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.0
1435.1
1423.4
Analysis
28
2024 Gauteng Inter-Region Chess Championship (U10A)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
4.0
1435.1
1423.4
Analysis
27
2023 Centurion Chess Open (C)
2023/09/23
2023/09/23
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1481.6
1478.8
Analysis
26
Chess Power House 2023 (C)
2023/08/19
2023/08/19
Johannesburg Metro (GJM)
Standard
90
0.94
5
4
3.0
1477.7
1469.8
Analysis
25
JMC Closed Aug 2023 (U10)
2023/08/04
2023/08/06
Johannesburg Metro (GJM)
Standard
90
0.94
6
6
4.0
1477.7
1469.8
Analysis
24
Bojanala's FIDE in the Sparkling Waters 2023 (Junior)
2023/07/29
2023/07/29
Bojanala Platina (NBR)
Standard
120
1.00
6
6
5.0
1414.1
1404.8
Analysis
23
JMC Trinity Little Falls 2023 (U10)
2023/07/02
2023/07/02
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
4.0
1414.1
1404.8
Analysis
22
JNW Open - Trinityhouse Little Falls 2023 (U10)
2023/06/24
2023/06/24
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
4.0
1359.2
1360.9
Analysis
21
JNW Open - Trinityhouse Little Falls 2023 (U10)
2023/05/13
2023/05/13
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
4.0
1323.9
1311.2
Analysis
20
Silver Lakes Open Chess Tournament (C)
2023/04/15
2023/04/15
Tshwane (GTP)
Standard
60
0.83
5
5
2.5
1292.6
1278.4
Analysis
19
2023 South African Junior Closed Chess Championships (U8 Open)
2023/03/31
2023/04/04
Chess South Africa (CSA)
Standard
120
1.00
9
9
4.5
1292.6
1278.4
Analysis
18
Chris Greyling Open Tournament 2023 (D1)
2023/03/21
2023/03/21
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1370.7
1398.3
Analysis
17
JMC 1 St Peters 2023 (C)
2023/03/18
2023/03/18
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
1.0
1370.7
1398.3
Analysis
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
50
27
3
20
28.5
57.0
59.5
1312.8
1372.3
White
24
13
2
9
14.0
58.3
70.8
1299.2
1370.0
Black
26
14
1
11
14.5
55.8
49.0
1325.4
1374.4
Standard
All
38
20
1
17
20.5
53.9
33.6
1327.0
1360.6
White
18
9
1
8
9.5
52.8
23.6
1309.3
1333.0
Black
20
11
0
9
11.0
55.0
42.5
1342.9
1385.4
Rapid
All
12
7
2
3
8.0
66.7
141.7
1267.7
1409.4
White
6
4
1
1
4.5
75.0
212.5
1268.6
1481.1
Black
6
3
1
2
3.5
58.3
70.8
1266.9
1337.7
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
200
109
8
83
113.0
56.5
55.2
1222.6
1277.8
White
99
55
5
39
57.5
58.1
68.7
1212.6
1281.3
Black
101
54
3
44
55.5
55.0
42.1
1232.4
1274.5
Standard
All
160
98
6
56
101.0
63.1
111.6
1243.0
1354.5
White
79
48
4
27
50.0
63.3
113.0
1236.8
1349.8
Black
81
50
2
29
51.0
63.0
110.2
1249.0
1359.2
Rapid
All
32
11
2
19
12.0
37.5
-106.3
1178.3
1072.0
White
16
7
1
8
7.5
46.9
-26.6
1158.5
1131.9
Black
16
4
1
11
4.5
28.1
-185.9
1198.1
1012.2
Blitz
All
8
0
0
8
0.0
0.0
-425.0
992.1
567.1
White
4
0
0
4
0.0
0.0
-425.0
950.0
525.0
Black
4
0
0
4
0.0
0.0
-425.0
1034.3
609.3
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
2160134894
Conradie, M (Minka)
5
3.5
3
1
1
70.0
1235.2
170.0
1405.2
View list
2
1150145631
Stelloh, S (Sebastian)
5
2.0
2
0
3
40.0
1347.9
-85.0
1262.9
View list
3
2150135551
Le Kay, A (Alexa)
4
3.0
3
0
1
75.0
1271.9
212.5
1484.4
View list
4
1140138260
Ma, M (Matthew)
4
1.5
1
1
2
37.5
1397.6
-106.3
1291.4
View list
5
1150143812
Kwint, J (Jack)
3
3.0
3
0
0
100.0
1332.8
425.0
1757.8
View list
6
1170134515
Deysel, Z (Zachariah)
3
2.0
2
0
1
66.7
1215.9
141.7
1357.5
View list
7
1140144042
Motau, N (Neelo)
3
0.5
0
1
2
16.7
1360.9
-283.3
1077.6
View list
8
2140155741
Akole, S (Sara)
2
2.0
2
0
0
100.0
1379.5
425.0
1804.5
View list
9
1160137420
Badat, M (Mikaeel)
2
2.0
2
0
0
100.0
1234.4
425.0
1659.4
View list
10
1150136649
Coetzee, A (Adriaan)
2
2.0
2
0
0
100.0
1138.1
425.0
1563.1
View list
11
1150141656
Du Toit, C (Carel Aaron)
2
2.0
2
0
0
100.0
1243.1
425.0
1668.1
View list
12
1160144300
Hoek, B (Beyers)
2
2.0
2
0
0
100.0
1286.7
425.0
1711.7
View list
13
1160134896
Loots, A (Albert)
2
2.0
2
0
0
100.0
1336.9
425.0
1761.9
View list
14
2140158313
Mann, L (Leane)
2
2.0
2
0
0
100.0
1410.0
425.0
1835.0
View list
15
1150134898
Nagel, R (Raf)
2
2.0
2
0
0
100.0
1192.1
425.0
1617.1
View list
16
2150134902
Steyn, M (Mari-Louise)
2
2.0
2
0
0
100.0
1286.7
425.0
1711.7
View list
17
1140133936
Retief, M (Michael)
2
1.0
1
0
1
50.0
1172.8
0.0
1172.8
View list
18
1150130726
Badenhorst, D (Daniel)
2
0.0
0
0
2
0.0
1227.0
-425.0
802.0
View list
19
1140113413
Eapen, J (Johan)
2
0.0
0
0
2
0.0
1331.0
-425.0
906.0
View list
20
1110143051
Naude, J (Johan)
2
0.0
0
0
2
0.0
1444.9
-425.0
1019.9
View list
