Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Botha, SB (Stefan)
Dob:
2005/12/14 (U20)
Gender:
Male
Chess SA id:
105087964
FIDE id:
Region:
Sedibeng (GSV)
Citizen:
RSA
Title(s):
Last active:
2023/08/19 (311 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
Current Raw rating
1274.7
Current Weighted rating
1252.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1274.7
Current highest rating achieved
1274.7
Current floor (min rating allowed)
774.7
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)
±149.1
Current Raw change used (final)
0.0
Projected new Raw rating
1274.7
Projected new Weighed rating
1153.3
Projected new Weighted performance
730.5
Projected new final Raw rating (if new WP > new Raw)
1274.7
Projected new highest rating
1274.7
Projected new floor
774.7
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1274.7
Projected effective change (new Official - current Official)
=0.0
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
Current Raw rating
1288.4
Current Weighted rating
1261.6
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1288.4
Current highest rating achieved
1288.4
Current floor (min rating allowed)
788.4
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)
±146.2
Current Raw change used (final)
0.0
Projected new Raw rating
1288.4
Projected new Weighed rating
1162.3
Projected new Weighted performance
730.5
Projected new final Raw rating (if new WP > new Raw)
1288.4
Projected new highest rating
1288.4
Projected new floor
788.4
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1288.4
Projected effective change (new Official - current Official)
=0.0
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
Current Raw rating
1200.0
Current Weighted rating
1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current highest rating achieved
1200.0
Current floor (min rating allowed)
700.0
Current K-factor
36
s
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
1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1200.0
Projected new floor
700.0
Projected new K-facor
36
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
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
Current Raw rating
1200.0
Current Weighted rating
1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current highest rating achieved
1200.0
Current floor (min rating allowed)
700.0
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
1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1200.0
Projected new floor
700.0
Projected new K-facor
36
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
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
2
2023 Gauteng Top Schools (U19 Mixed)
2023/08/19
2023/08/19
West Rand (GWR)
Standard
60
0.83
5
5
2.0
1200.0
1200.0
Analysis
1
Gauteng D7 Teams 2023 (U19)
2023/08/12
2023/08/12
Sedibeng (GSV)
Standard
60
0.83
5
5
5.0
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
10
7
0
3
7.0
70.0
170.0
1208.0
1378.0
White
5
3
0
2
3.0
60.0
85.0
1114.1
1199.1
Black
5
4
0
1
4.0
80.0
255.0
1301.8
1556.8
Standard
All
10
7
0
3
7.0
70.0
170.0
1208.0
1378.0
White
5
3
0
2
3.0
60.0
85.0
1114.1
1199.1
Black
5
4
0
1
4.0
80.0
255.0
1301.8
1556.8
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
1060112781
Benade, R (Ryan)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
2
105090035
Maine, L (Lebohang)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
3
1050159573
Koebu, N (Nhlanhla)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
4
1060159577
Motloung, S (Sibusiso)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
5
1040159579
Van Der Merwe, J (Jason)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
6
107090298
Sithole, N (Nolwazi)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
7
105027920
Nkomo, S (Sibusiso)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
8
1090135172
Ngobe, S (Siyabonga)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
9
107061708
Moss, P (Prince)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
10
1050161204
Chili, N (Njabulo)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
