Chess South Africa
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Chess South Africa
Bosman, J (Johan)
Dob:
2012/01/26 (U14)
Gender:
Male
Chess SA id:
1120116463
FIDE id:
Region:
Ekurhuleni (GE)
Citizen:
RSA
Title(s):
Last active:
2024/03/09 (68 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
1326.8
Curent Weighted rating
1352.2
Curent Weighted performance
1219.6
Current official/published rating (highest between Raw, WR and WP)
1352.2
Current floor (min rating allowed)
934.9
Current highest rating achieved
1434.9
Current K-factor
32
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)
±138.4
Current Raw change used (final)
0.0
Projected new Raw rating
1326.8
Projected new Weighed rating
1349.9
Projected new Weighted performance
1219.6
Projected new official/published rating (highest between new Raw, new WR and new WP)
1349.9
Projected effective change (new Official - current Official)
-2.3
Projected new highest rating
1434.9
Projected new floor
934.9
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
1288.9
Curent Weighted rating
1328.9
Curent Weighted performance
1154.0
Current official/published rating (highest between Raw, WR and WP)
1328.9
Current floor (min rating allowed)
890.1
Current highest rating achieved
1390.1
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)
±146.1
Current Raw change used (final)
0.0
Projected new Raw rating
1288.9
Projected new Weighed rating
1325.9
Projected new Weighted performance
1154.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1325.9
Projected effective change (new Official - current Official)
-3.1
Projected new highest rating
1390.1
Projected new floor
890.1
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
1347.0
Curent Weighted rating
1323.8
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1347.0
Current floor (min rating allowed)
847.0
Current highest rating achieved
1347.0
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)
±134.5
Current Raw change used (final)
0.0
Projected new Raw rating
1347.0
Projected new Weighed rating
1325.8
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1347.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1347.0
Projected new floor
847.0
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
1200.0
Curent Weighted rating
1200.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current floor (min rating allowed)
847.0
Current highest rating achieved
1200.0
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)
±165.8
Current Raw change used (final)
0.0
Projected new Raw rating
1200.0
Projected new Weighed rating
1200.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1200.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1200.0
Projected new floor
847.0
Projected new K-facor
36
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
3
Benoni Primary School Cluster Individuals 2024 (U13 Boys)
2024/03/09
2024/03/09
Ekurhuleni (GE)
Rapid
30
0.60
5
5
4.0
1308.2
1313.9
Analysis
2
Laerskool Northmead Proewe 2024 (U13)
2024/02/10
2024/02/10
Ekurhuleni (GE)
Rapid
30
0.60
5
5
3.0
1311.7
1320.0
Analysis
1
2024 Gauteng Inter-Region Chess Championship (U12A)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
0.0
1381.5
1371.0
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
21
Benoni Primary School Cluster Individuals 2024 (U13 Boys)
2024/03/09
2024/03/09
Ekurhuleni (GE)
Rapid
30
0.60
5
5
4.0
1308.2
1313.9
Analysis
20
Laerskool Northmead Proewe 2024 (U13)
2024/02/10
2024/02/10
Ekurhuleni (GE)
Rapid
30
0.60
5
5
3.0
1311.7
1320.0
Analysis
19
2024 Gauteng Inter-Region Chess Championship (U12A)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
0.0
1381.5
1371.0
Analysis
18
2023 Ekurhuleni North District Schools Finals (U11)
2023/07/29
2023/07/29
Ekurhuleni (GE)
Standard
60
0.83
5
4
3.0
1365.3
1346.2
Analysis
17
Ekurhuleni Trials 2 2023 (U12)
2023/04/22
2023/04/22
Ekurhuleni (GE)
Standard
60
0.83
5
5
4.0
1346.7
1317.8
Analysis
16
Ekhuruleni Chess Trials 1 2023 (U12)
2023/03/25
2023/03/25
Ekurhuleni (GE)
Standard
60
0.83
5
5
4.0
1321.2
1275.3
Analysis
15
ACB Tournament 2022 (B)
2022/10/08
2022/10/08
Ekurhuleni (GE)
Standard
60
0.83
5
5
2.0
1340.1
1288.3
Analysis
14
ACB Tournament 2022 (A)
2022/10/07
2022/10/08
Ekurhuleni (GE)
Standard
90
0.94
5
0
0.0
1340.1
1288.3
Analysis
13
Ekurhuleni Chess Springs Club Open 2022 (D)
2022/09/03
2022/09/03
Ekurhuleni (GE)
Standard
60
0.83
5
5
2.0
1371.4
1321.4
Analysis
12
Ekurhuleni-North Schools Teams 2022 (U11)
2022/08/06
2022/08/06
Ekurhuleni (GE)
Standard
60
0.83
5
5
2.0
1417.1
1376.8
Analysis
11
2022 Gauteng Schools Individual Chess Championship (U11 Boys)
2022/06/18
2022/06/18
Ekurhuleni (GE)
Standard
60
0.83
5
5
3.0
1434.9
1390.1
Analysis
10
RMS Swiss For Rating of Players 2022 (U11)
2022/05/28
2022/05/28
Ekurhuleni (GE)
Rapid
30
0.60
7
6
6.0
1331.8
1200.0
Analysis
9
Ekurhuleni-North Schools Finals Indiv 2022 (U11 Boys)
2022/05/13
2022/05/13
Ekurhuleni (GE)
Standard
60
0.83
5
5
4.0
1331.8
1330.6
Analysis
8
Ekurhuleni Trials 1 2022 (U12)
2022/04/23
2022/04/23
Ekurhuleni (GE)
Standard
62
0.84
5
5
4.0
1215.5
1217.7
Analysis
7
South African Junior Closed Chess Championships 2022 (U10 Open)
2022/03/28
2022/04/02
Chess South Africa (CSA)
Standard
120
1.00
11
11
5.0
1215.5
1217.7
Analysis
6
2022 Gauteng Interregion (U10 Open)
2022/02/26
2022/02/26
Tshwane (GTP)
Standard
60
0.83
5
5
3.5
1172.2
1165.1
Analysis
5
Ekurhuleni Chess Open 2022 (D)
2022/01/08
2022/01/09
Ekurhuleni (GE)
Standard
60
0.83
7
7
3.0
1179.4
1173.0
Analysis
4
Ekurhuleni Trials (3) 2021 (U8+U10)
2021/11/06
2021/11/06
Ekurhuleni (GE)
Standard
62
0.84
5
5
3.0
1166.1
1155.4
Analysis
3
Ekurhuleni Chess Chessa Open 2021 (C)
2021/03/27
2021/03/27
Ekurhuleni (GE)
Standard
60
0.83
5
5
1.0
1213.0
1212.6
Analysis
2
Alberton Chess Club Open 2020 (E)
2020/02/22
2020/02/22
Ekurhuleni (GE)
Standard
60
0.83
5
5
3.0
1204.6
1204.0
Analysis
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
15
7
0
8
7.0
46.7
-28.3
1272.5
1244.2
White
7
4
0
3
4.0
57.1
60.7
1276.3
1337.0
Black
8
3
0
5
3.0
37.5
-106.3
1269.2
1162.9
Standard
All
5
0
0
5
0.0
0.0
-425.0
1406.5
981.5
White
2
0
0
2
0.0
0.0
-425.0
1477.1
1052.1
Black
3
0
0
3
0.0
0.0
-425.0
1359.5
934.5
Rapid
All
10
7
0
3
7.0
70.0
170.0
1205.5
1375.5
White
5
4
0
1
4.0
80.0
255.0
1196.0
1451.0
Black
5
3
0
2
3.0
60.0
85.0
1214.9
1299.9
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
108
61
3
44
62.5
57.9
66.9
1232.6
1299.5
White
55
31
1
23
31.5
57.3
61.8
1232.7
1294.5
Black
53
30
2
21
31.0
58.5
72.2
1232.6
1304.7
Standard
All
92
48
3
41
49.5
53.8
32.3
1237.7
1270.0
White
47
24
1
22
24.5
52.1
18.1
1238.6
1256.7
Black
45
24
2
19
25.0
55.6
47.2
1236.7
1283.9
Rapid
All
16
13
0
3
13.0
81.3
265.6
1203.4
1469.0
White
8
7
0
1
7.0
87.5
318.8
1197.5
1516.2
Black
8
6
0
2
6.0
75.0
212.5
1209.3
1421.8
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
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1120135370
Fick, L (Logan Nicolas)
3
2.0
2
0
1
66.7
1286.2
141.7
1427.9
View list
2
1110139505
Kheswa, S (Spholami)
2
1.0
1
0
1
50.0
1325.2
0.0
1325.2
View list
3
1130131224
Minny, O (Oban)
2
1.0
1
0
1
50.0
1197.5
0.0
1197.5
View list
4
1120140144
Myburgh, L (Liam)
2
1.0
1
0
1
50.0
1290.4
0.0
1290.4
View list
5
1120140146
Tang, K (Kevin)
2
1.0
1
0
1
50.0
1334.0
0.0
1334.0
View list
6
1130135701
Van Loggerenberg, E (Elandre)
2
1.0
1
0
1
50.0
1190.8
0.0
1190.8
View list
7
1120139501
Buitendag, D (Darius)
2
0.0
0
0
2
0.0
1368.3
-425.0
943.3
View list
8
2120111295
Britz, A (Abigail)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
9
1110142672
Bouwer, J (Jayden)
1
1.0
1
0
0
100.0
1331.8
425.0
1756.8
View list
10
1120152983
Chen, Y (Yuqi)
1
1.0
1
0
0
100.0
1346.7
425.0
1771.7
View list
11
1120143235
Buyeza, T (Tshenolo)
1
1.0
1
0
0
100.0
1434.9
425.0
1859.9
View list
12
1130133911
Butner, J (James)
1
1.0
1
0
0
100.0
1215.5
425.0
1640.5
View list
13
1110192043
Bekker, M (Mynhard)
1
1.0
1
0
0
100.0
1311.7
425.0
1736.7
View list
14
2110135380
Coetzee, M (Michelle)
1
1.0
1
0
0
100.0
1215.5
425.0
1640.5
View list
15
1110192045
Cronje, A (Alexander)
1
1.0
1
0
0
100.0
1308.2
425.0
1733.2
View list
16
1120142675
Costelha, M (Miguel)
1
1.0
1
0
0
100.0
1331.8
425.0
1756.8
View list
17
1120133960
Deulkar, R (Ronit)
1
1.0
1
0
0
100.0
1213.0
425.0
1638.0
View list
18
1090135387
Del Grosso, G (Gianluca Gabriele)
1
1.0
1
0
0
100.0
1179.4
425.0
1604.4
View list
19
1120134231
De Bruyn, DP (Dylan Patrick)
1
1.0
1
0
0
100.0
1321.2
425.0
1746.2
View list
20
1120301275
Fagan, N (Nathan)
1
1.0
1
0
0
100.0
1308.2
425.0
1733.2
View list