Chess South Africa
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Chess South Africa
Cotter, W (Wian)
Dob:
2006/09/04 (U20)
Gender:
Male
Chess SA id:
106056199
FIDE id:
Region:
West Coast (WCU)
Citizen:
RSA
Title(s):
Last active:
2023/07/29 (331 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
1144.6
Current Weighted rating
1072.6
Current Weighted performance
1026.0
Current official/published rating (highest between Raw, WR and WP)
1144.6
Current highest rating achieved
1144.6
Current floor (min rating allowed)
644.6
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)
±179.4
Current Raw change used (final)
0.0
Projected new Raw rating
1144.6
Projected new Weighed rating
995.5
Projected new Weighted performance
1026.0
Projected new final Raw rating (if new WP > new Raw)
1144.6
Projected new highest rating
1144.6
Projected new floor
644.6
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1144.6
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
808.8
Current Weighted rating
779.6
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
808.8
Current highest rating achieved
808.8
Current floor (min rating allowed)
500.0
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)
±289.5
Current Raw change used (final)
0.0
Projected new Raw rating
808.8
Projected new Weighed rating
720.9
Projected new Weighted performance
614.7
Projected new final Raw rating (if new WP > new Raw)
808.8
Projected new highest rating
808.8
Projected new floor
500.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
808.8
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
959.6
Current Weighted rating
932.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
959.6
Current highest rating achieved
959.6
Current floor (min rating allowed)
500.0
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)
±233.5
Current Raw change used (final)
0.0
Projected new Raw rating
959.6
Projected new Weighed rating
862.0
Projected new Weighted performance
867.9
Projected new final Raw rating (if new WP > new Raw)
959.6
Projected new highest rating
959.6
Projected new floor
500.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
959.6
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
590.0
Current Weighted rating
590.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
590.0
Current highest rating achieved
590.0
Current floor (min rating allowed)
500.0
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)
±395.4
Current Raw change used (final)
0.0
Projected new Raw rating
590.0
Projected new Weighed rating
542.8
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
590.0
Projected new floor
500.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
590.0
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
6
Pedro Booyse Top Schools 2023 (High School)
2023/07/29
2023/07/29
West Coast (WCU)
Standard
60
0.83
5
1
0.5
1142.3
789.6
Analysis
5
Lower West Coast Top Schools Championships 2023 (High School)
2023/06/10
2023/06/10
West Coast (WCU)
Rapid
30
0.60
5
4
2.0
949.3
898.8
Analysis
4
Western Cape HS Individuals 2023 (U17 Boys)
2023/04/01
2023/04/02
Cape Town (WCT)
Standard
60
0.83
6
6
2.5
875.9
690.4
Analysis
3
West Coast High School Championships 2023 (U17 Boys)
2023/02/18
2023/02/18
West Coast (WCU)
Standard
60
0.83
6
6
3.0
709.3
590.0
Analysis
2
Lower West Coast High Schools Prestige 2023 (U17 Boys)
2023/02/11
2023/02/11
West Coast (WCU)
Rapid
30
0.60
5
5
3.0
709.3
788.8
Analysis
1
West Coast Schools Chess Grand Challenge 2022 (HS Development)
2022/10/29
2022/10/29
West Coast (WCU)
Rapid
30
0.60
6
6
5.0
590.0
590.0
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
28
14
4
10
16.0
57.1
60.7
1216.0
1276.7
White
14
7
2
5
8.0
57.1
60.7
1204.5
1265.3
Black
14
7
2
5
8.0
57.1
60.7
1227.4
1288.1
Standard
All
13
4
4
5
6.0
46.2
-32.7
1254.9
1222.2
White
6
1
2
3
2.0
33.3
-141.7
1207.6
1066.0
Black
7
3
2
2
4.0
57.1
60.7
1295.4
1356.1
Rapid
All
15
10
0
5
10.0
66.7
141.7
1182.2
1323.9
White
8
6
0
2
6.0
75.0
212.5
1202.2
1414.7
Black
7
4
0
3
4.0
57.1
60.7
1159.4
1220.1
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
2090131818
Nel, R (Roxaan)
2
2.0
2
0
0
100.0
590.0
425.0
1015.0
View list
2
1070110599
Claase, E (Evan)
2
2.0
2
0
0
100.0
590.0
425.0
1015.0
View list
3
106066235
Fillis, J (Jordan)
2
2.0
2
0
0
100.0
829.3
425.0
1254.3
View list
4
1070134025
Filander, J (Jayrin)
2
1.0
1
0
1
50.0
709.3
0.0
709.3
View list
5
1060138388
Hendricks, G (Guevante)
2
1.0
1
0
1
50.0
590.0
0.0
590.0
View list
6
1100142277
Tieling, D (Denilhio)
1
1.0
1
0
0
100.0
949.3
425.0
1374.3
View list
7
1070110166
Pretorius, W (Willem)
1
1.0
1
0
0
100.0
709.3
425.0
1134.3
View list
8
106088978
Moses, H (Heinrich)
1
1.0
1
0
0
100.0
875.9
425.0
1300.9
View list
9
1060149734
Mason, Z (Zane)
1
1.0
1
0
0
100.0
709.3
425.0
1134.3
View list
10
1070149724
Brickles, J (Jose)
1
1.0
1
0
0
100.0
709.3
425.0
1134.3
View list
11
1060112307
Wilson, J (Joshua)
1
1.0
1
0
0
100.0
875.9
425.0
1300.9
View list
12
106087908
Hall, G (Gregory)
1
0.5
0
1
0
50.0
875.9
0.0
875.9
View list
13
1070110603
Bell, N (Neyo)
1
0.5
0
1
0
50.0
709.3
0.0
709.3
View list
14
107087110
Du Plessis, S (Stefan)
1
0.5
0
1
0
50.0
709.3
0.0
709.3
View list
15
1090131842
Le Fleur, S (Shirano)
1
0.5
0
1
0
50.0
1142.3
0.0
1142.3
View list
16
105093494
Schroeder, C (Carl)
1
0.0
0
0
1
0.0
949.3
-425.0
524.3
View list
17
1060108575
Pietersen, E (Enzalin)
1
0.0
0
0
1
0.0
875.9
-425.0
450.9
View list
18
1070149735
Muller, A (Adrian)
1
0.0
0
0
1
0.0
875.9
-425.0
450.9
View list
19
1060142250
Lintvelt, T (Thomas)
1
0.0
0
0
1
0.0
709.3
-425.0
284.3
View list
20
106088984
Jonas, SG (Sue-Win)
1
0.0
0
0
1
0.0
875.9
-425.0
450.9
View list