Chess South Africa
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Chess South Africa
De Koker, Z (Zian)
Dob:
2012/06/26 (U14)
Gender:
Male
Chess SA id:
1120138748
FIDE id:
Region:
Cape Town (WCT)
Citizen:
RSA
Title(s):
Last active:
2023/02/04 (469 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
Curent Raw rating
1218.5
Curent Weighted rating
1216.9
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1218.5
Current floor (min rating allowed)
730.5
Current highest rating achieved
1230.5
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)
±161.5
Current Raw change used (final)
0.0
Projected new Raw rating
1218.5
Projected new Weighed rating
1217.2
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1218.5
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1230.5
Projected new floor
730.5
Projected new K-facor
36
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
Curent Raw rating
1193.2
Curent Weighted rating
1189.7
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1193.2
Current floor (min rating allowed)
693.2
Current highest rating achieved
1193.2
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)
±167.4
Current Raw change used (final)
0.0
Projected new Raw rating
1193.2
Projected new Weighed rating
1190.5
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1193.2
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1193.2
Projected new floor
693.2
Projected new K-facor
40
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
Curent Raw rating
1242.4
Curent Weighted rating
1242.4
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1242.4
Current floor (min rating allowed)
742.4
Current highest rating achieved
1242.4
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)
±156.1
Current Raw change used (final)
0.0
Projected new Raw rating
1242.4
Projected new Weighed rating
1242.4
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1242.4
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1242.4
Projected new floor
742.4
Projected new K-facor
36
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
Curent Raw rating
1200.0
Curent Weighted rating
1200.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current floor (min rating allowed)
742.4
Current highest rating achieved
1200.0
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
1200.0
Projected new Weighted performance
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
Projected new highest rating
1200.0
Projected new floor
742.4
Projected new K-facor
36
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
3
District East Schools Chess Individual Trials 2023 (U11 Boys)
2023/02/03
2023/02/04
Cape Town (WCT)
Standard
60
0.83
6
6
3.5
1205.1
1164.4
Analysis
2
Metro WP Schools Chess Trials 2022 (U11 Boys)
2022/04/22
2022/04/23
Cape Town (WCT)
Standard
60
0.83
6
6
2.0
1230.5
1200.0
Analysis
1
2022 East Dist Individuals (U11)
2022/03/13
2022/03/13
Cape Town (WCT)
Rapid
45
0.74
6
6
4.0
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
18
9
1
8
9.5
52.8
23.6
1217.8
1241.4
White
9
7
0
2
7.0
77.8
236.1
1204.2
1440.3
Black
9
2
1
6
2.5
27.8
-188.9
1231.3
1042.4
Standard
All
12
5
1
6
5.5
45.8
-35.4
1224.1
1188.7
White
6
5
0
1
5.0
83.3
283.3
1201.3
1484.7
Black
6
0
1
5
0.5
8.3
-354.2
1246.9
892.8
Rapid
All
6
4
0
2
4.0
66.7
141.7
1205.0
1346.7
White
3
2
0
1
2.0
66.7
141.7
1210.0
1351.7
Black
3
2
0
1
2.0
66.7
141.7
1200.0
1341.7
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
1110138055
Solomons, C (Christanzo)
1
1.0
1
0
0
100.0
1230.5
425.0
1655.5
View list
2
1120138782
Scott, M (Markal)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
3
1110138763
Mafilika, O (Onikayo)
1
1.0
1
0
0
100.0
1230.5
425.0
1655.5
View list
4
1110138777
Nyumbeka, V (Velile Samuel Junior)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
5
1120097961
Kruger, D (Dawid)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
6
1120150132
Janya, E (Endinako)
1
1.0
1
0
0
100.0
1205.1
425.0
1630.1
View list
7
1130147715
Herman, V (Victor)
1
1.0
1
0
0
100.0
1205.1
425.0
1630.1
View list
8
1120147731
Harding, J (Jodie)
1
1.0
1
0
0
100.0
1205.1
425.0
1630.1
View list
9
2110138752
Ganjana, N (Namndikhona)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
10
1130150129
Esterhuysen, M (Matthew)
1
0.5
0
1
0
50.0
1205.1
0.0
1205.1
View list
11
1120134372
Weideman, J (Janko)
1
0.0
0
0
1
0.0
1230.5
-425.0
805.5
View list
12
1120118992
Van Zyl, F (Frede)
1
0.0
0
0
1
0.0
1205.1
-425.0
780.1
View list
13
1110118988
Schutte, D (Daniel)
1
0.0
0
0
1
0.0
1230.5
-425.0
805.5
View list
14
1120138780
Rall, L (Lian)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
15
1110108081
Muller, H (Helgard)
1
0.0
0
0
1
0.0
1230.5
-425.0
805.5
View list
16
1110138766
Mcweba, S (Sange)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
17
1110108459
Lee, S (Shakoor)
1
0.0
0
0
1
0.0
1230.5
-425.0
805.5
View list
18
1120150098
Arendse, V (Virgil)
1
0.0
0
0
1
0.0
1205.1
-425.0
780.1
View list