Player Page

Cotter, W (Wian)
Dob: 2006/09/04 (U20)
Gender: Male
Chess SA id: 106056199
FIDE id:
Region: West Coast (WCU)
Citizen: RSA
Title(s):
Last active: 2023/07/29 (331 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
Current Raw rating1144.6
Current Weighted rating1072.6
Current Weighted performance1026.0
Current official/published rating (highest between Raw, WR and WP)1144.6
Current highest rating achieved1144.6
Current floor (min rating allowed)644.6
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)±179.4
Current Raw change used (final)0.0
Projected new Raw rating1144.6
Projected new Weighed rating995.5
Projected new Weighted performance1026.0
Projected new final Raw rating (if new WP > new Raw)1144.6
Projected new highest rating1144.6
Projected new floor644.6
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1144.6
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 rating808.8
Current Weighted rating779.6
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)808.8
Current highest rating achieved808.8
Current floor (min rating allowed)500.0
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)±289.5
Current Raw change used (final)0.0
Projected new Raw rating808.8
Projected new Weighed rating720.9
Projected new Weighted performance614.7
Projected new final Raw rating (if new WP > new Raw)808.8
Projected new highest rating808.8
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)808.8
Projected effective change (new Official - current Official)=0.0
s
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 rating959.6
Current Weighted rating932.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)959.6
Current highest rating achieved959.6
Current floor (min rating allowed)500.0
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)±233.5
Current Raw change used (final)0.0
Projected new Raw rating959.6
Projected new Weighed rating862.0
Projected new Weighted performance867.9
Projected new final Raw rating (if new WP > new Raw)959.6
Projected new highest rating959.6
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)959.6
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 rating590.0
Current Weighted rating590.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)590.0
Current highest rating achieved590.0
Current floor (min rating allowed)500.0
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)±395.4
Current Raw change used (final)0.0
Projected new Raw rating590.0
Projected new Weighed rating542.8
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating590.0
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)590.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
6 Pedro Booyse Top Schools 2023 (High School) 2023/07/29 2023/07/29 West Coast (WCU) Standard 60 0.83 5 1 0.5 1142.3 789.6 Analysis
5 Lower West Coast Top Schools Championships 2023 (High School) 2023/06/10 2023/06/10 West Coast (WCU) Rapid 30 0.60 5 4 2.0 949.3 898.8 Analysis
4 Western Cape HS Individuals 2023 (U17 Boys) 2023/04/01 2023/04/02 Cape Town (WCT) Standard 60 0.83 6 6 2.5 875.9 690.4 Analysis
3 West Coast High School Championships 2023 (U17 Boys) 2023/02/18 2023/02/18 West Coast (WCU) Standard 60 0.83 6 6 3.0 709.3 590.0 Analysis
2 Lower West Coast High Schools Prestige 2023 (U17 Boys) 2023/02/11 2023/02/11 West Coast (WCU) Rapid 30 0.60 5 5 3.0 709.3 788.8 Analysis
1 West Coast Schools Chess Grand Challenge 2022 (HS Development) 2022/10/29 2022/10/29 West Coast (WCU) Rapid 30 0.60 6 6 5.0 590.0 590.0 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 28 14 4 10 16.0 57.1 60.7 1216.0 1276.7
White 14 7 2 5 8.0 57.1 60.7 1204.5 1265.3
Black 14 7 2 5 8.0 57.1 60.7 1227.4 1288.1
Standard All 13 4 4 5 6.0 46.2 -32.7 1254.9 1222.2
White 6 1 2 3 2.0 33.3 -141.7 1207.6 1066.0
Black 7 3 2 2 4.0 57.1 60.7 1295.4 1356.1
Rapid All 15 10 0 5 10.0 66.7 141.7 1182.2 1323.9
White 8 6 0 2 6.0 75.0 212.5 1202.2 1414.7
Black 7 4 0 3 4.0 57.1 60.7 1159.4 1220.1
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 2090131818 Nel, R (Roxaan) 2 2.0 2 0 0 100.0 590.0 425.0 1015.0 View list
2 1070110599 Claase, E (Evan) 2 2.0 2 0 0 100.0 590.0 425.0 1015.0 View list
3 106066235 Fillis, J (Jordan) 2 2.0 2 0 0 100.0 829.3 425.0 1254.3 View list
4 1070134025 Filander, J (Jayrin) 2 1.0 1 0 1 50.0 709.3 0.0 709.3 View list
5 1060138388 Hendricks, G (Guevante) 2 1.0 1 0 1 50.0 590.0 0.0 590.0 View list
6 1100142277 Tieling, D (Denilhio) 1 1.0 1 0 0 100.0 949.3 425.0 1374.3 View list
7 1070110166 Pretorius, W (Willem) 1 1.0 1 0 0 100.0 709.3 425.0 1134.3 View list
8 106088978 Moses, H (Heinrich) 1 1.0 1 0 0 100.0 875.9 425.0 1300.9 View list
9 1060149734 Mason, Z (Zane) 1 1.0 1 0 0 100.0 709.3 425.0 1134.3 View list
10 1070149724 Brickles, J (Jose) 1 1.0 1 0 0 100.0 709.3 425.0 1134.3 View list
11 1060112307 Wilson, J (Joshua) 1 1.0 1 0 0 100.0 875.9 425.0 1300.9 View list
12 106087908 Hall, G (Gregory) 1 0.5 0 1 0 50.0 875.9 0.0 875.9 View list
13 1070110603 Bell, N (Neyo) 1 0.5 0 1 0 50.0 709.3 0.0 709.3 View list
14 107087110 Du Plessis, S (Stefan) 1 0.5 0 1 0 50.0 709.3 0.0 709.3 View list
15 1090131842 Le Fleur, S (Shirano) 1 0.5 0 1 0 50.0 1142.3 0.0 1142.3 View list
16 105093494 Schroeder, C (Carl) 1 0.0 0 0 1 0.0 949.3 -425.0 524.3 View list
17 1060108575 Pietersen, E (Enzalin) 1 0.0 0 0 1 0.0 875.9 -425.0 450.9 View list
18 1070149735 Muller, A (Adrian) 1 0.0 0 0 1 0.0 875.9 -425.0 450.9 View list
19 1060142250 Lintvelt, T (Thomas) 1 0.0 0 0 1 0.0 709.3 -425.0 284.3 View list
20 106088984 Jonas, SG (Sue-Win) 1 0.0 0 0 1 0.0 875.9 -425.0 450.9 View list