Player Page

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
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 rating1218.5
Curent Weighted rating1216.9
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1218.5
Current floor (min rating allowed)730.5
Current highest rating achieved1230.5
Current K-factor36
Games played this month0
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 rating1218.5
Projected new Weighed rating1217.2
Projected new Weighted performance0.0
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 rating1230.5
Projected new floor730.5
Projected new K-facor36
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 rating1193.2
Curent Weighted rating1189.7
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1193.2
Current floor (min rating allowed)693.2
Current highest rating achieved1193.2
Current K-factor40
Games played this month0
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 rating1193.2
Projected new Weighed rating1190.5
Projected new Weighted performance0.0
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 rating1193.2
Projected new floor693.2
Projected new K-facor40
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 rating1242.4
Curent Weighted rating1242.4
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1242.4
Current floor (min rating allowed)742.4
Current highest rating achieved1242.4
Current K-factor36
Games played this month0
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 rating1242.4
Projected new Weighed rating1242.4
Projected new Weighted performance0.0
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 rating1242.4
Projected new floor742.4
Projected new K-facor36
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 rating1200.0
Curent Weighted rating1200.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1200.0
Current floor (min rating allowed)742.4
Current highest rating achieved1200.0
Current K-factor36
Games played this month0
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 rating1200.0
Projected new Weighed rating1200.0
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 rating1200.0
Projected new floor742.4
Projected new K-facor36
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
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
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 idNameGamesScoreWinsDrawsLosses%AorDpPerformView
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