Chess South Africa
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Chess South Africa
Pretorius, S (Sonya)
Dob:
2009/03/02 (U16)
Gender:
Female
Chess SA id:
2090132122
FIDE id:
Region:
Cape Town (WCT)
Citizen:
RSA
Title(s):
Last active:
2023/04/22 (434 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
1123.6
Current Weighted rating
1129.8
Current Weighted performance
672.5
Current official/published rating (highest between Raw, WR and WP)
1129.8
Current highest rating achieved
1185.1
Current floor (min rating allowed)
685.1
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)
±184.9
Current Raw change used (final)
0.0
Projected new Raw rating
1123.6
Projected new Weighed rating
1038.6
Projected new Weighted performance
672.5
Projected new final Raw rating (if new WP > new Raw)
1123.6
Projected new highest rating
1185.1
Projected new floor
685.1
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1123.6
Projected effective change (new Official - current Official)
-6.2
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
1172.8
Current Weighted rating
1172.8
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1172.8
Current highest rating achieved
1172.8
Current floor (min rating allowed)
672.8
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)
±172.4
Current Raw change used (final)
0.0
Projected new Raw rating
1172.8
Projected new Weighed rating
1079.0
Projected new Weighted performance
166.1
Projected new final Raw rating (if new WP > new Raw)
1172.8
Projected new highest rating
1172.8
Projected new floor
672.8
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1172.8
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
1076.8
Current Weighted rating
1091.5
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1091.5
Current highest rating achieved
1180.8
Current floor (min rating allowed)
680.8
Current K-factor
40
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)
±197.6
Current Raw change used (final)
0.0
Projected new Raw rating
1076.8
Projected new Weighed rating
1002.4
Projected new Weighted performance
673.6
Projected new final Raw rating (if new WP > new Raw)
1076.8
Projected new highest rating
1180.8
Projected new floor
680.8
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1076.8
Projected effective change (new Official - current Official)
-14.7
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
5
Hermanus Rapid 2023 (B)
2023/04/22
2023/04/22
Overberg (WOS)
Rapid
25
0.54
6
5
0.0
1162.0
1165.2
Analysis
4
Overberg Schools Open Tournament 2023 (U14)
2023/02/11
2023/02/11
Overberg (WOS)
Rapid
20
0.47
5
5
2.0
1166.5
1180.8
Analysis
3
2020 Western Province Open (Development)
2020/03/07
2020/03/07
Cape Town (WCT)
Standard
60
0.83
5
5
2.0
1185.1
1200.0
Analysis
2
2020 Welgemoed Chess Challenge (U12)
2020/02/29
2020/02/29
Cape Town (WCT)
Rapid
30
0.60
5
5
3.0
1200.0
1200.0
Analysis
1
Cape Winelands Schools Trials 1 2020 (U11 Girls)
2020/02/08
2020/02/08
Cape Winelands (WCW)
Rapid
30
0.60
6
6
2.5
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
26
9
1
16
9.5
36.5
-114.4
1193.7
1079.3
White
13
6
1
6
6.5
50.0
0.0
1167.9
1167.9
Black
13
3
0
10
3.0
23.1
-228.8
1219.5
990.6
Standard
All
5
2
0
3
2.0
40.0
-85.0
1166.5
1081.5
White
2
1
0
1
1.0
50.0
0.0
1165.2
1165.2
Black
3
1
0
2
1.0
33.3
-141.7
1167.5
1025.8
Rapid
All
21
7
1
13
7.5
35.7
-121.4
1200.2
1078.7
White
11
5
1
5
5.5
50.0
0.0
1168.4
1168.4
Black
10
2
0
8
2.0
20.0
-255.0
1235.1
980.1
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
2090097016
Siebert, E (Emily)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
2
2100138478
Sidanga, R (Ronique)
1
1.0
1
0
0
100.0
1166.5
425.0
1591.5
View list
3
2090097165
May, A (Audrey)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
4
2100130925
Lau, Z (Zoe)
1
1.0
1
0
0
100.0
1185.1
425.0
1610.1
View list
5
1090132965
James, F (Fadwa)
1
1.0
1
0
0
100.0
1185.1
425.0
1610.1
View list
6
2090097166
Lombard, E (Elri)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
7
2100118009
De Villiers, L (Lienka)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
8
1100109824
Daniels, E (Ethan)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
9
1100151354
Swarts, A (Anesto)
1
1.0
1
0
0
100.0
1166.5
425.0
1591.5
View list
10
210089562
Bester, M (Milla)
1
0.5
0
1
0
50.0
1200.0
0.0
1200.0
View list
11
109094924
Matinywa, T (Thobani)
1
0.0
0
0
1
0.0
1166.5
-425.0
741.5
View list
12
1070097558
Maruma, K (Katlego)
1
0.0
0
0
1
0.0
1162.0
-425.0
737.0
View list
13
1100108988
Rule, C (Calem)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
14
1120109662
Roberts, I (Iwan)
1
0.0
0
0
1
0.0
1162.0
-425.0
737.0
View list
15
1090150663
Pietersen, C (Christiano)
1
0.0
0
0
1
0.0
1166.5
-425.0
741.5
View list
16
2090108395
Mqadi, O (Olethiwe)
1
0.0
0
0
1
0.0
1185.1
-425.0
760.1
View list
17
1100152325
Mitchell, M (Matthew)
1
0.0
0
0
1
0.0
1166.5
-425.0
741.5
View list
18
1100151347
Liebenberg, C (Christiaan)
1
0.0
0
0
1
0.0
1162.0
-425.0
737.0
View list
19
2100132323
Laurance, E (Emma)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
20
1850130543
Harmse, A (Andre)
1
0.0
0
0
1
0.0
1185.1
-425.0
760.1
View list