Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Van Der Merwe, R (Rosco)
Dob:
2015/02/10 (U10)
Gender:
Male
Chess SA id:
1150149954
FIDE id:
Region:
Eden (WEG)
Citizen:
RSA
Title(s):
Last active:
2024/02/17 (281 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
1168.8
Current Weighted rating
1169.1
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1169.1
Current highest rating achieved
1168.8
Current floor (min rating allowed)
668.8
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)
±173.4
Current Raw change used (final)
0.0
Projected new Raw rating
1168.8
Projected new Weighed rating
1075.4
Projected new Weighted performance
520.6
Projected new final Raw rating (if new WP > new Raw)
1168.8
Projected new highest rating
1168.8
Projected new floor
668.8
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1168.8
Projected effective change (new Official - current Official)
-0.3
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
1160.8
Current Weighted rating
1161.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1161.2
Current highest rating achieved
1160.8
Current floor (min rating allowed)
660.8
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)
±175.3
Current Raw change used (final)
0.0
Projected new Raw rating
1160.8
Projected new Weighed rating
1068.1
Projected new Weighted performance
520.6
Projected new final Raw rating (if new WP > new Raw)
1160.8
Projected new highest rating
1160.8
Projected new floor
660.8
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1160.8
Projected effective change (new Official - current Official)
-0.4
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.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
1
George Schools Trials 2 2024 (U9 Boys)
2024/02/17
2024/02/17
Eden District (WEG)
Standard
60
0.83
5
0
0.0
1168.8
1160.8
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
3
George Schools Trials 2 2024 (U9 Boys)
2024/02/17
2024/02/17
Eden District (WEG)
Standard
60
0.83
5
0
0.0
1168.8
1160.8
Analysis
2
George Chess Trials 3 2023 (U9 Boys)
2023/02/25
2023/02/25
Eden District (WEG)
Standard
60
0.83
5
5
2.0
1200.0
1200.0
Analysis
1
George Chess Trials 2 2023 (U9 Boys)
2023/02/11
2023/02/11
Cape Town (WCT)
Standard
60
0.83
5
5
2.0
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
4
0
6
4.0
40.0
-85.0
1198.3
1113.3
White
4
3
0
1
3.0
75.0
212.5
1184.8
1397.3
Black
6
1
0
5
1.0
16.7
-283.3
1207.3
924.0
Standard
All
10
4
0
6
4.0
40.0
-85.0
1198.3
1113.3
White
4
3
0
1
3.0
75.0
212.5
1184.8
1397.3
Black
6
1
0
5
1.0
16.7
-283.3
1207.3
924.0
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
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1140148819
Fourie, N (Nicholis)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
2
1150149947
Damons, E (Ernest)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
3
1150142294
Reddy, X (Xander)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
4
1150149950
Opperman, K (Kieran)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
5
1150136957
Van Der Merwe, O (Oliver)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
6
1150148822
Steenberg, R (Regardt)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
7
1140148821
Nel, H (Hanroux Maritz)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
8
1150136953
James, W (William)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
9
1140144672
Brewis, F (Fox)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
10
1140149946
Bond, B (Ben)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
