Player Page

Coba, J (Joshua)
Dob: 2006/02/21 (U20)
Gender: Male
Chess SA id: 1060153255
FIDE id:
Region: Buffalo City (EBC)
Citizen: RSA
Title(s):
Last active: 2024/04/06 (41 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 rating1193.7
Curent Weighted rating1187.3
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1193.7
Current floor (min rating allowed)693.7
Current highest rating achieved1193.7
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)±167.3
Current Raw change used (final)0.0
Projected new Raw rating1193.7
Projected new Weighed rating1187.5
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1193.7
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1193.7
Projected new floor693.7
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 rating1190.0
Curent Weighted rating1184.1
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1190.0
Current floor (min rating allowed)690.0
Current highest rating achieved1190.0
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)±168.2
Current Raw change used (final)0.0
Projected new Raw rating1190.0
Projected new Weighed rating1184.3
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1190.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1190.0
Projected new floor690.0
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 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)700.0
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 floor700.0
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)700.0
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 floor700.0
Projected new K-facor36
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
1 2nd Buffalo City Chess Trials 2024 (High School B) 2024/04/06 2024/04/06 Buffalo City (EBC) Standard 60 0.83 5 5 2.5 1184.1 1180.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
2 2nd Buffalo City Chess Trials 2024 (High School B) 2024/04/06 2024/04/06 Buffalo City (EBC) Standard 60 0.83 5 5 2.5 1184.1 1180.4 Analysis
1 3rd Vikings Champs 2023 (U18-Adults) 2023/03/23 2023/03/23 Buffalo City (EBC) Standard 60 0.83 5 4 1.5 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 5 2 1 2 2.5 50.0 0.0 1238.9 1238.9
White 3 2 1 0 2.5 83.3 283.3 1200.0 1483.3
Black 2 0 0 2 0.0 0.0 -425.0 1297.2 872.2
Standard All 5 2 1 2 2.5 50.0 0.0 1238.9 1238.9
White 3 2 1 0 2.5 83.3 283.3 1200.0 1483.3
Black 2 0 0 2 0.0 0.0 -425.0 1297.2 872.2
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 9 3 2 4 4.0 44.4 -47.2 1223.0 1175.8
White 5 2 2 1 3.0 60.0 85.0 1210.2 1295.2
Black 4 1 0 3 1.0 25.0 -212.5 1239.0 1026.5
Standard All 9 3 2 4 4.0 44.4 -47.2 1223.0 1175.8
White 5 2 2 1 3.0 60.0 85.0 1210.2 1295.2
Black 4 1 0 3 1.0 25.0 -212.5 1239.0 1026.5
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 idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1060153250 Amankwah, C (Ciara) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
2 1100301802 Ngcenge, Q (Qhayiya) 1 1.0 1 0 0 100.0 1184.1 425.0 1609.1 View list
3 1070301797 Matomane, A (Asakhe) 1 1.0 1 0 0 100.0 1184.1 425.0 1609.1 View list
4 1090301794 Ford, S (Simthandile) 1 0.5 0 1 0 50.0 1184.1 0.0 1184.1 View list
5 1060153254 Boateng, M (Merlene) 1 0.5 0 1 0 50.0 1200.0 0.0 1200.0 View list
6 2070150785 Qubeka, S (Simele) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
7 1070150783 One, L (Lihlumile) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
8 1090301804 Nkasela, E (Enawe) 1 0.0 0 0 1 0.0 1184.1 -425.0 759.1 View list
9 2150149005 Mxabo, M (Masonwabe) 1 0.0 0 0 1 0.0 1184.1 -425.0 759.1 View list