Chess South Africa
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Chess South Africa
Sierra, O (Oliver)
Dob:
2008/12/11 (U18)
Gender:
Male
Chess SA id:
1080311914
FIDE id:
Region:
Johannesburg Metro (GJM)
Citizen:
RSA
Title(s):
Last active:
2024/09/14 (104 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
1209.8
Current Weighted rating
1201.5
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1209.8
Current highest rating achieved
1209.8
Current floor (min rating allowed)
709.8
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)
±163.5
Current Raw change used (final)
0.0
Projected new Raw rating
1209.8
Projected new Weighed rating
1105.5
Projected new Weighted performance
392.7
Projected new final Raw rating (if new WP > new Raw)
1209.8
Projected new highest rating
1209.8
Projected new floor
709.8
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1209.8
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
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
0.0
Current floor (min rating allowed)
700.0
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)
±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
0.0
Projected new floor
700.0
Projected new K-facor
40
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
1203.6
Current Weighted rating
1200.6
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1203.6
Current highest rating achieved
1203.6
Current floor (min rating allowed)
703.6
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)
±165.0
Current Raw change used (final)
0.0
Projected new Raw rating
1203.6
Projected new Weighed rating
1104.5
Projected new Weighted performance
413.4
Projected new final Raw rating (if new WP > new Raw)
1203.6
Projected new highest rating
1203.6
Projected new floor
703.6
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1203.6
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
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
0.0
Current floor (min rating allowed)
700.0
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)
±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
0.0
Projected new floor
700.0
Projected new K-facor
40
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.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
1
Wits Young Kudu 2024 (Secondary School)
2024/09/14
2024/09/14
Johannesburg Metro (GJM)
Rapid
30
0.60
5
4
2.0
1200.0
1200.0
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
1
Wits Young Kudu 2024 (Secondary School)
2024/09/14
2024/09/14
Johannesburg Metro (GJM)
Rapid
30
0.60
5
4
2.0
1200.0
1200.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
4
2
0
2
2.0
50.0
0.0
1285.9
1285.9
White
2
1
0
1
1.0
50.0
0.0
1337.1
1337.1
Black
2
1
0
1
1.0
50.0
0.0
1234.7
1234.7
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
4
2
0
2
2.0
50.0
0.0
1285.9
1285.9
White
2
1
0
1
1.0
50.0
0.0
1337.1
1337.1
Black
2
1
0
1
1.0
50.0
0.0
1234.7
1234.7
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
4
2
0
2
2.0
50.0
0.0
1285.9
1285.9
White
2
1
0
1
1.0
50.0
0.0
1337.1
1337.1
Black
2
1
0
1
1.0
50.0
0.0
1234.7
1234.7
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
4
2
0
2
2.0
50.0
0.0
1285.9
1285.9
White
2
1
0
1
1.0
50.0
0.0
1337.1
1337.1
Black
2
1
0
1
1.0
50.0
0.0
1234.7
1234.7
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
2080157253
Chan-Henry, S (Sophie)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
2
1080311892
Alemayehu, A (Abigail)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
3
107077218
Lake, E (Ethan)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
4
1080136701
Fritz, W (Wayde)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
