Chess South Africa
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Chess South Africa
Botha, J (Jonathan)
Dob:
2005/02/04 (U20)
Gender:
Male
Chess SA id:
105078148
FIDE id:
Region:
Eden (WEG)
Citizen:
RSA
Title(s):
Last active:
2024/04/20 (28 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
1244.1
Curent Weighted rating
1225.5
Curent Weighted performance
1204.7
Current official/published rating (highest between Raw, WR and WP)
1244.1
Current floor (min rating allowed)
747.4
Current highest rating achieved
1247.4
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)
±155.7
Current Raw change used (final)
0.0
Projected new Raw rating
1244.1
Projected new Weighed rating
1227.4
Projected new Weighted performance
1204.7
Projected new official/published rating (highest between new Raw, new WR and new WP)
1244.1
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1247.4
Projected new floor
747.4
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
1236.6
Curent Weighted rating
1220.0
Curent Weighted performance
1194.9
Current official/published rating (highest between Raw, WR and WP)
1236.6
Current floor (min rating allowed)
749.5
Current highest rating achieved
1249.5
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)
±157.4
Current Raw change used (final)
0.0
Projected new Raw rating
1236.6
Projected new Weighed rating
1221.8
Projected new Weighted performance
1194.9
Projected new official/published rating (highest between new Raw, new WR and new WP)
1236.6
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1249.5
Projected new floor
749.5
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
523.6
Curent Weighted rating
523.6
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
523.6
Current floor (min rating allowed)
500.0
Current highest rating achieved
523.6
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)
±434.7
Current Raw change used (final)
0.0
Projected new Raw rating
523.6
Projected new Weighed rating
523.6
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
523.6
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
523.6
Projected new floor
500.0
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
523.6
Curent Weighted rating
523.6
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
523.6
Current floor (min rating allowed)
500.0
Current highest rating achieved
523.6
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)
±434.7
Current Raw change used (final)
0.0
Projected new Raw rating
523.6
Projected new Weighed rating
523.6
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
523.6
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
523.6
Projected new floor
500.0
Projected new K-facor
40
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
3
Eden Chess Trials 2 2024 (U20)
2024/04/13
2024/04/20
Eden (WEG)
Standard
60
0.83
10
10
4.0
1243.5
1240.2
Analysis
2
Western Cape HS Individuals Championship 2024 (U20 Boys+Girls)
2024/03/21
2024/03/22
Overberg (WOS)
Standard
60
0.83
6
6
4.0
1222.3
1216.4
Analysis
1
Eden School Chess Trials 1 2024 (U20 Mix)
2024/03/09
2024/03/09
Eden District (WEG)
Standard
60
0.83
5
5
2.5
1222.3
1216.4
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
16
Eden Chess Trials 2 2024 (U20)
2024/04/13
2024/04/20
Eden (WEG)
Standard
60
0.83
10
10
4.0
1243.5
1240.2
Analysis
15
Western Cape HS Individuals Championship 2024 (U20 Boys+Girls)
2024/03/21
2024/03/22
Overberg (WOS)
Standard
60
0.83
6
6
4.0
1222.3
1216.4
Analysis
14
Eden School Chess Trials 1 2024 (U20 Mix)
2024/03/09
2024/03/09
Eden District (WEG)
Standard
60
0.83
5
5
2.5
1222.3
1216.4
Analysis
13
Eden Trials 2+3 2023 (U20)
2023/04/15
2023/05/13
Eden District (WEG)
Standard
60
0.83
10
5
2.5
1247.4
1249.5
Analysis
12
Eden Trails 1 2023 (U19 Boys)
2023/03/11
2023/03/11
Eden District (WEG)
Standard
60
0.83
5
0
0.0
1247.4
1249.5
Analysis
11
Oudussa Proewe 1 2023 (U19 Boys)
2023/02/11
2023/02/11
Eden District (WEG)
Standard
60
0.83
5
5
4.0
1199.6
1190.1
Analysis
10
Eden Proewe 2 2022 (O18 Seuns)
2022/04/09
2022/04/09
Eden District (WEG)
Standard
65
0.85
5
5
2.0
1214.3
1204.9
Analysis
9
Eden Proewe 1 2022 (O18 Seuns)
2022/03/12
2022/03/12
Eden District (WEG)
Standard
65
0.85
5
5
2.5
1212.2
1203.8
Analysis
8
Eden Schools Closed Trials 1 2020 (U15 Boys)
2020/03/07
2020/03/07
Eden District (WEG)
Standard
65
0.85
5
5
3.0
1216.2
1208.5
Analysis
7
Oudtshoorn Proewe 1 2020 (O15)
2020/02/15
2020/02/15
Eden District (WEG)
Standard
60
0.83
5
5
4.0
1167.2
1147.7
Analysis
6
Eden Trials 3 2019 (U16 Open)
2019/05/11
2019/05/11
Eden District (WEG)
Standard
60
0.83
5
5
2.0
1211.7
1203.5
Analysis
5
Eden Trials 2 2019 (U16 Open)
2019/04/13
2019/04/13
Eden District (WEG)
Standard
60
0.83
5
4
3.0
895.1
954.8
Analysis
4
Eden Trials 1 2019 (U16 Open)
2019/03/02
2019/03/02
Eden District (WEG)
Standard
60
0.83
5
5
3.0
820.4
877.2
Analysis
3
Oudtshoorn Trials 3 2019 (U16)
2019/02/16
2019/02/16
Eden District (WEG)
Standard
60
0.83
5
5
3.0
602.6
618.4
Analysis
2
Oudtshoorn Trials 2 2019 (U16)
2019/02/09
2019/02/09
Eden District (WEG)
Standard
60
0.83
5
5
4.0
602.6
618.4
Analysis
1
Oudtshoorn Trials 1 2019 (U16)
2019/01/19
2019/01/19
Eden District (WEG)
Standard
60
0.83
5
4
2.5
523.6
523.6
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
21
9
3
9
10.5
50.0
0.0
1259.5
1259.5
White
10
4
1
5
4.5
45.0
-42.5
1281.9
1239.4
Black
11
5
2
4
6.0
54.5
38.6
1239.3
1277.9
Standard
All
21
9
3
9
10.5
50.0
0.0
1259.5
1259.5
White
10
4
1
5
4.5
45.0
-42.5
1281.9
1239.4
Black
11
5
2
4
6.0
54.5
38.6
1239.3
1277.9
Rapid
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
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
79
43
6
30
46.0
58.2
69.9
1160.1
1230.0
White
37
20
2
15
21.0
56.8
57.4
1185.5
1242.9
Black
42
23
4
15
25.0
59.5
81.0
1137.7
1218.7
Standard
All
79
43
6
30
46.0
58.2
69.9
1160.1
1230.0
White
37
20
2
15
21.0
56.8
57.4
1185.5
1242.9
Black
42
23
4
15
25.0
59.5
81.0
1137.7
1218.7
Rapid
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
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
1050098458
Mostert, R (Richard)
3
2.0
2
0
1
66.7
1031.2
141.7
1172.8
View list
2
105078131
Kiewiet, M (Marvin)
3
0.0
0
0
3
0.0
1223.3
-425.0
798.3
View list
3
2060193111
Cremer, L (Leah)
2
2.0
2
0
0
100.0
1222.3
425.0
1647.3
View list
4
1050107882
Julies, N (Nigeal)
2
2.0
2
0
0
100.0
909.4
425.0
1334.4
View list
5
1060139283
Ribeiro, E (Enrique)
2
1.5
1
1
0
75.0
1227.8
212.5
1440.3
View list
6
204054165
De Villiers, B (Bianca)
2
1.0
1
0
1
50.0
1053.4
0.0
1053.4
View list
7
106092942
Daniels, K (Keanu)
2
1.0
1
0
1
50.0
1232.9
0.0
1232.9
View list
8
104055794
Arries, J (Jodin)
2
1.0
1
0
1
50.0
563.1
0.0
563.1
View list
9
1050098459
Matthews, I (Isiah)
2
1.0
1
0
1
50.0
857.8
0.0
857.8
View list
10
106065429
Petersen, JD (John-Wayne)
2
0.5
0
1
1
25.0
1221.5
-212.5
1009.0
View list
11
1060118499
Claassen, R (Ruwaldo)
2
0.0
0
0
2
0.0
1222.3
-425.0
797.3
View list
12
1050151099
Goliath, P (Peterianho)
2
0.0
0
0
2
0.0
1245.5
-425.0
820.5
View list
13
105065436
Abrahams, L (Liaan)
1
1.0
1
0
0
100.0
523.6
425.0
948.6
View list
14
2090151096
Davids, M (Mikah Rae)
1
1.0
1
0
0
100.0
1199.6
425.0
1624.6
View list
15
1050151329
Geel, R (Ruan)
1
1.0
1
0
0
100.0
1222.3
425.0
1647.3
View list
16
2050132028
Booysen, A (Ash Lee)
1
1.0
1
0
0
100.0
1167.2
425.0
1592.2
View list
17
1060137853
Bolo, K (Khanyisa)
1
1.0
1
0
0
100.0
1212.2
425.0
1637.2
View list
18
105088331
Bezuidenhout, R (Ross)
1
1.0
1
0
0
100.0
1216.2
425.0
1641.2
View list
19
1060109428
Benedito, E (Enrique)
1
1.0
1
0
0
100.0
1167.2
425.0
1592.2
View list
20
105091180
Barends, X (Xavier)
1
1.0
1
0
0
100.0
1211.7
425.0
1636.7
View list