Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
De Koker, C (Christiaan)
Dob:
2010/05/12 (U16)
Gender:
Male
Chess SA id:
110087167
FIDE id:
Region:
Sedibeng (GSV)
Citizen:
RSA
Title(s):
Last active:
2022/04/23 (795 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
1095.3
Current Weighted rating
1095.3
Current Weighted performance
519.3
Current official/published rating (highest between Raw, WR and WP)
1095.3
Current highest rating achieved
1165.4
Current floor (min rating allowed)
665.4
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)
±192.5
Current Raw change used (final)
0.0
Projected new Raw rating
1095.3
Projected new Weighed rating
1007.7
Projected new Weighted performance
519.3
Projected new final Raw rating (if new WP > new Raw)
1095.3
Projected new highest rating
1165.4
Projected new floor
665.4
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1095.3
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
1077.2
Current Weighted rating
1077.2
Current Weighted performance
519.3
Current official/published rating (highest between Raw, WR and WP)
1077.2
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)
±197.5
Current Raw change used (final)
0.0
Projected new Raw rating
1077.2
Projected new Weighed rating
991.0
Projected new Weighted performance
519.3
Projected new final Raw rating (if new WP > new Raw)
1077.2
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)
1077.2
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
5
Dirk De Koster Chess Open 2022 (D)
2022/04/23
2022/04/23
Ekurhuleni (GE)
Standard
61
0.83
5
4
1.5
1098.3
1078.0
Analysis
4
LS Voorwaarts & Dr P Hangelbroek Chess Open 2019 (E)
2019/08/31
2019/08/31
Sedibeng (GSV)
Standard
61
0.83
5
5
2.0
1165.4
1160.8
Analysis
3
D7 Primary School League 2019 (U9)
2019/08/03
2019/08/03
Sedibeng (GSV)
Standard
60
0.83
5
5
1.5
1165.4
1160.8
Analysis
2
D7 Individuals 2019 (U9 Boys)
2019/05/04
2019/05/04
Sedibeng (GSV)
Standard
60
0.83
5
5
3.0
1133.9
1120.4
Analysis
1
D7 Individual 2018 (U9 Boys)
2018/02/24
2018/02/24
Sedibeng (GSV)
Standard
61
0.83
5
5
1.0
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
24
8
2
14
9.0
37.5
-106.3
1142.7
1036.4
White
12
4
1
7
4.5
37.5
-106.3
1182.1
1075.8
Black
12
4
1
7
4.5
37.5
-106.3
1103.3
997.0
Standard
All
24
8
2
14
9.0
37.5
-106.3
1142.7
1036.4
White
12
4
1
7
4.5
37.5
-106.3
1182.1
1075.8
Black
12
4
1
7
4.5
37.5
-106.3
1103.3
997.0
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
210082952
Van Biljon, J (Jessica)
2
0.0
0
0
2
0.0
1165.4
-425.0
740.4
View list
2
111087168
Cronje, E (Emile)
2
0.0
0
0
2
0.0
1167.0
-425.0
742.0
View list
3
1130113595
Bannerman, J (Jared)
1
1.0
1
0
0
100.0
1165.4
425.0
1590.4
View list
4
1110113682
Gloy, B (Bryan)
1
1.0
1
0
0
100.0
1165.4
425.0
1590.4
View list
5
1100113673
Smit, R (Rynhardt)
1
1.0
1
0
0
100.0
1133.9
425.0
1558.9
View list
6
1100097413
Richards, S (Samuel)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
7
2110118607
Raath, M (Meghan-Mari)
1
1.0
1
0
0
100.0
1165.4
425.0
1590.4
View list
8
1110111869
Kriel, I (Ivan)
1
1.0
1
0
0
100.0
1133.9
425.0
1558.9
View list
9
2110139838
Klein, K (Kelly)
1
1.0
1
0
0
100.0
1098.3
425.0
1523.3
View list
10
1100113669
Vorster, K (Kian)
1
1.0
1
0
0
100.0
1133.9
425.0
1558.9
View list
11
2120133676
Smith, MI (Melea Ine)
1
0.5
0
1
0
50.0
1098.3
0.0
1098.3
View list
12
1100116896
Maseloane, T (Tshepang)
1
0.5
0
1
0
50.0
1165.4
0.0
1165.4
View list
13
2130130082
Van Zyl, K (Kiera)
1
0.0
0
0
1
0.0
1098.3
-425.0
673.3
View list
14
110093070
Van Der Westhuizen, J (Janu)
1
0.0
0
0
1
0.0
1165.4
-425.0
740.4
View list
15
1100139840
Smith, KE (Kaiden Elljay)
1
0.0
0
0
1
0.0
1098.3
-425.0
673.3
View list
16
1090097407
Karsten, K (Keagan)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
17
1090097412
Posthumus, E (Ethan)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
18
1110118604
Gebharch, R (Rudolph)
1
0.0
0
0
1
0.0
1165.4
-425.0
740.4
View list
19
110093068
De Rouwe, ED (Eckhard)
1
0.0
0
0
1
0.0
1133.9
-425.0
708.9
View list
20
1120103521
De Lange, H (Henro)
1
0.0
0
0
1
0.0
1165.4
-425.0
740.4
View list