Player Page

Da Costa, E (Ethan)
Dob: 2012/02/17 (U14)
Gender: Male
Chess SA id: 1120306437
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2024/10/26 (28 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 rating1129.9
Current Weighted rating1183.4
Current Weighted performance1102.2
Current official/published rating (highest between Raw, WR and WP)1183.4
Current highest rating achieved1186.7
Current floor (min rating allowed)686.7
Current K-factor40
Games played this month5
Score (S)4.0
Expected score (We)2.16
Difference (S-We)1.53
Current Raw change (no limits, including tournament time weight)61.1
Current min/max change allowed (with limits)±183.2
Current Raw change used (final)61.1
Projected new Raw rating1191.0
Projected new Weighed rating1088.1
Projected new Weighted performance1218.6
Projected new final Raw rating (if new WP > new Raw)1218.6
Projected new highest rating1218.6
Projected new floor718.6
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1218.6
Projected effective change (new Official - current Official)+35.2
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 rating1122.4
Current Weighted rating1180.8
Current Weighted performance1102.2
Current official/published rating (highest between Raw, WR and WP)1180.8
Current highest rating achieved1182.4
Current floor (min rating allowed)682.4
Current K-factor40
Games played this month5
Score (S)4.0
Expected score (We)2.12
Difference (S-We)1.88
Current Raw change (no limits, including tournament time weight)75.2
Current min/max change allowed (with limits)±185.2
Current Raw change used (final)75.2
Projected new Raw rating1197.6
Projected new Weighed rating1085.6
Projected new Weighted performance1218.6
Projected new final Raw rating (if new WP > new Raw)1218.6
Projected new highest rating1218.6
Projected new floor718.6
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1218.6
Projected effective change (new Official - current Official)+37.8
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved0.0
Current floor (min rating allowed)700.0
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)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating0.0
Projected new floor700.0
Projected new K-facor40
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved0.0
Current floor (min rating allowed)700.0
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)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating0.0
Projected new floor700.0
Projected new K-facor40
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
Tournament: Lardies Ope 2024 (C)
Start: 2024/10/26  End: 2024/10/26  Host: GTP  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 4.0
Main rating: 1129.9  Rating gain/loss: 61.1
Type rating: 1122.4  Rating gain/loss: 75.2
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
7 Lardies Ope 2024 (C) 2024/10/26 2024/10/26 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1129.9 1122.4 Analysis
6 Centurion Chess Open Tournament 2024 (C) 2024/09/21 2024/09/21 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1186.7 1182.4 Analysis
5 2024 Etienne Lewis (U14) 2024/08/30 2024/09/01 Tshwane (GTP) Standard 90 0.94 7 7 2.0 1186.7 1182.4 Analysis
4 2024 Jacaranda Round Robin Open Chess Tournament (N) 2024/08/17 2024/08/17 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1133.6 1117.2 Analysis
3 2024 Midstream College Open Chess Tournament (B2) 2024/07/20 2024/07/20 Tshwane (GTP) Standard 60 0.83 5 4 0.0 1200.0 1200.0 Analysis
2 Menlopark Open Chess Tournament 2024 (C) 2024/07/13 2024/07/13 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1200.0 1200.0 Analysis
1 2024 Prestige College Open Chess Tournament (D) 2024/07/06 2024/07/06 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1200.0 1200.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
7 Lardies Ope 2024 (C) 2024/10/26 2024/10/26 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1129.9 1122.4 Analysis
6 Centurion Chess Open Tournament 2024 (C) 2024/09/21 2024/09/21 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1186.7 1182.4 Analysis
5 2024 Etienne Lewis (U14) 2024/08/30 2024/09/01 Tshwane (GTP) Standard 90 0.94 7 7 2.0 1186.7 1182.4 Analysis
4 2024 Jacaranda Round Robin Open Chess Tournament (N) 2024/08/17 2024/08/17 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1133.6 1117.2 Analysis
3 2024 Midstream College Open Chess Tournament (B2) 2024/07/20 2024/07/20 Tshwane (GTP) Standard 60 0.83 5 4 0.0 1200.0 1200.0 Analysis
2 Menlopark Open Chess Tournament 2024 (C) 2024/07/13 2024/07/13 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1200.0 1200.0 Analysis
1 2024 Prestige College Open Chess Tournament (D) 2024/07/06 2024/07/06 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 36 15 4 17 17.0 47.2 -23.6 1201.8 1178.2
White 20 11 3 6 12.5 62.5 106.3 1198.1 1304.3
Black 16 4 1 11 4.5 28.1 -185.9 1206.5 1020.6
Standard All 36 15 4 17 17.0 47.2 -23.6 1201.8 1178.2
White 20 11 3 6 12.5 62.5 106.3 1198.1 1304.3
Black 16 4 1 11 4.5 28.1 -185.9 1206.5 1020.6
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 36 15 4 17 17.0 47.2 -23.6 1201.8 1178.2
White 20 11 3 6 12.5 62.5 106.3 1198.1 1304.3
Black 16 4 1 11 4.5 28.1 -185.9 1206.5 1020.6
Standard All 36 15 4 17 17.0 47.2 -23.6 1201.8 1178.2
White 20 11 3 6 12.5 62.5 106.3 1198.1 1304.3
Black 16 4 1 11 4.5 28.1 -185.9 1206.5 1020.6
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 2120152264 Du Toit, J (Janri) 2 1.0 1 0 1 50.0 1186.7 0.0 1186.7 View list
2 2120300879 Lombard, C (Cornelia) 1 1.0 1 0 0 100.0 1186.7 425.0 1611.7 View list
3 1130112187 Le Roux, J (Johannes) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
4 1120300007 Labuscagne, W (Waldo) 1 1.0 1 0 0 100.0 1186.7 425.0 1611.7 View list
5 1110300397 Mangena, M (Marklee) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
6 1120302690 Meiring, J (Jacobus) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
7 1120300013 Mashele, N (Naledi) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
8 1110107188 De Beer, L (Liam) 1 1.0 1 0 0 100.0 1129.9 425.0 1554.9 View list
9 1110313119 Njotini, N (Noxolo) 1 1.0 1 0 0 100.0 1129.9 425.0 1554.9 View list
10 1150157427 Nkosi, N (Nsika) 1 1.0 1 0 0 100.0 1133.6 425.0 1558.6 View list
11 1120313121 Sehoka, L (Lesedi) 1 1.0 1 0 0 100.0 1129.9 425.0 1554.9 View list
12 1070303746 Sentsho, K (Keotshepile) 1 1.0 1 0 0 100.0 1133.6 425.0 1558.6 View list
13 1120313123 Thobela, S (Sibusiso) 1 1.0 1 0 0 100.0 1129.9 425.0 1554.9 View list
14 1140303283 Tleane, M (Molemo) 1 1.0 1 0 0 100.0 1133.6 425.0 1558.6 View list
15 1160301116 Udeagha, C (Chinonso) 1 1.0 1 0 0 100.0 1133.6 425.0 1558.6 View list
16 1120304592 Carey, O (Oliver) 1 0.5 0 1 0 50.0 1186.7 0.0 1186.7 View list
17 1120112330 De Kock, C (Chris-Jan) 1 0.5 0 1 0 50.0 1186.7 0.0 1186.7 View list
18 1120162067 Groom, A (Angelo) 1 0.5 0 1 0 50.0 1186.7 0.0 1186.7 View list
19 1120306647 Stander, C (Christiaan) 1 0.5 0 1 0 50.0 1200.0 0.0 1200.0 View list
20 1100148660 Mmakou, L (Lesedi) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list