Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Botha, B (Bertus)
Dob:
2010/12/02 (U16)
Gender:
Male
Chess SA id:
110095383
FIDE id:
Region:
Eden (WEG)
Citizen:
RSA
Title(s):
Last active:
2020/03/07 (1533 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
1058.3
Curent Weighted rating
1058.3
Curent Weighted performance
474.7
Current official/published rating (highest between Raw, WR and WP)
1058.3
Current floor (min rating allowed)
649.2
Current highest rating achieved
1149.2
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)
±202.9
Current Raw change used (final)
0.0
Projected new Raw rating
1058.3
Projected new Weighed rating
1058.3
Projected new Weighted performance
474.7
Projected new official/published rating (highest between new Raw, new WR and new WP)
1058.3
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1149.2
Projected new floor
649.2
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
1060.4
Curent Weighted rating
1060.4
Curent Weighted performance
472.9
Current official/published rating (highest between Raw, WR and WP)
1060.4
Current floor (min rating allowed)
638.8
Current highest rating achieved
1138.8
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)
±202.3
Current Raw change used (final)
0.0
Projected new Raw rating
1060.4
Projected new Weighed rating
1060.4
Projected new Weighted performance
472.9
Projected new official/published rating (highest between new Raw, new WR and new WP)
1060.4
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1138.8
Projected new floor
638.8
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
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)
700.0
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
700.0
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)
700.0
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
700.0
Projected new K-facor
36
Tournaments
History
Did not participate this month.
Did not participate this year.
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
9
Eden Schools Closed Trials 1 2020 (U11 Boys)
2020/03/07
2020/03/07
Eden District (WEG)
Standard
65
0.85
5
5
2.0
1030.4
1032.8
Analysis
8
Knysna School Trials Round 2 2020 (Juniors)
2020/02/22
2020/02/22
Eden District (WEG)
Standard
60
0.83
5
5
2.0
1009.8
1008.0
Analysis
7
Eden Trials 3 2019 (U10 Open)
2019/05/11
2019/05/11
Eden District (WEG)
Standard
60
0.83
5
5
1.0
1018.8
1016.0
Analysis
6
Eden Trials 2 2019 (U10 Open)
2019/04/13
2019/04/13
Eden District (WEG)
Standard
60
0.83
5
5
1.5
997.9
986.0
Analysis
5
Eden Trials 1 2019 (U10 Open)
2019/03/02
2019/03/02
Eden District (WEG)
Standard
60
0.83
5
5
1.0
1004.2
982.0
Analysis
4
Knysna School Trials #2 2019
2019/02/16
2019/02/16
Eden District (WEG)
Standard
60
0.83
5
5
2.0
1069.9
1044.8
Analysis
3
Knysna School Trials #1 2019
2019/02/02
2019/02/02
Eden District (WEG)
Standard
60
0.83
5
5
2.0
1069.9
1044.8
Analysis
2
EDENSC Closed 1 2018 (U10)
2018/03/10
2018/03/10
Eden District (WEG)
Standard
60
0.83
5
5
1.0
1149.2
1138.8
Analysis
1
Knysna Junior Chess Trials #1 2018
2018/02/10
2018/02/10
Eden District (WEG)
Standard
60
0.83
5
4
1.0
1200.0
1200.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
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
Standard
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
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
44
13
1
30
13.5
30.7
-164.2
1122.2
957.9
White
21
5
1
15
5.5
26.2
-202.4
1224.5
1022.2
Black
23
8
0
15
8.0
34.8
-129.3
1028.7
899.3
Standard
All
44
13
1
30
13.5
30.7
-164.2
1122.2
957.9
White
21
5
1
15
5.5
26.2
-202.4
1224.5
1022.2
Black
23
8
0
15
8.0
34.8
-129.3
1028.7
899.3
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
2070098430
Van Tonder, M (Monique)
2
1.0
1
0
1
50.0
1135.0
0.0
1135.0
View list
2
1110108602
Zhu, D (David)
2
1.0
1
0
1
50.0
1069.9
0.0
1069.9
View list
3
1110108531
Joseph, W (William)
2
0.0
0
0
2
0.0
1011.5
-425.0
586.5
View list
4
2110107823
Boshoff, C (Carla)
2
0.0
0
0
2
0.0
1008.3
-425.0
583.3
View list
5
1100108128
Prins, R (Reinhart)
2
0.0
0
0
2
0.0
1014.2
-425.0
589.2
View list
6
2100108140
Van Niekerk, N (Nina)
2
0.0
0
0
2
0.0
1011.5
-425.0
586.5
View list
7
2080131503
Bosman, C (Conlyn)
1
1.0
1
0
0
100.0
1009.8
425.0
1434.8
View list
8
1110102781
Adams, J (Jay-D)
1
1.0
1
0
0
100.0
1004.2
425.0
1429.2
View list
9
1100131508
Kuka, A (Avelodwa)
1
1.0
1
0
0
100.0
1030.4
425.0
1455.4
View list
10
1080131513
Perks, K (Kai)
1
1.0
1
0
0
100.0
1009.8
425.0
1434.8
View list
11
1100098405
Odendaal, L (Ludwig)
1
1.0
1
0
0
100.0
997.9
425.0
1422.9
View list
12
108095369
Talmaggies, L (Liron)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
13
1110108601
Van Der Vywer, L (Liam)
1
1.0
1
0
0
100.0
1069.9
425.0
1494.9
View list
14
1110109548
Van Lill, J (Jandre)
1
1.0
1
0
0
100.0
1069.9
425.0
1494.9
View list
15
1090131521
Vermaak, M (Markne)
1
1.0
1
0
0
100.0
1030.4
425.0
1455.4
View list
16
2100108139
Vos, M (Mieke)
1
1.0
1
0
0
100.0
1018.8
425.0
1443.8
View list
17
110086220
Willemse, J (Jesrial)
1
1.0
1
0
0
100.0
1149.2
425.0
1574.2
View list
18
1110108535
Manho, M (Matthew)
1
0.5
0
1
0
50.0
997.9
0.0
997.9
View list
19
1090131999
Lewendal, E (Eliah)
1
0.0
0
0
1
0.0
1030.4
-425.0
605.4
View list
20
1090100454
Law, A (Aaron)
1
0.0
0
0
1
0.0
1069.9
-425.0
644.9
View list