Player Page

Grobbelaar, A (Altus)
Dob: 2009/11/13 (U16)
Gender: Male
Chess SA id: 1090107941
FIDE id:
Region: Cape Winelands (WCW)
Citizen: RSA
Title(s):
Last active: 2024/02/17 (84 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 rating1237.0
Curent Weighted rating1272.8
Curent Weighted performance1077.0
Current official/published rating (highest between Raw, WR and WP)1272.8
Current floor (min rating allowed)824.1
Current highest rating achieved1324.1
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)±157.3
Current Raw change used (final)0.0
Projected new Raw rating1237.0
Projected new Weighed rating1269.9
Projected new Weighted performance1077.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1269.9
Projected effective change (new Official - current Official)-3.0
Projected new highest rating1324.1
Projected new floor824.1
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 rating1259.1
Curent Weighted rating1263.9
Curent Weighted performance1103.7
Current official/published rating (highest between Raw, WR and WP)1263.9
Current floor (min rating allowed)804.8
Current highest rating achieved1304.8
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)±152.4
Current Raw change used (final)0.0
Projected new Raw rating1259.1
Projected new Weighed rating1264.2
Projected new Weighted performance1103.7
Projected new official/published rating (highest between new Raw, new WR and new WP)1264.2
Projected effective change (new Official - current Official)+0.3
Projected new highest rating1304.8
Projected new floor804.8
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 rating1199.6
Curent Weighted rating1234.6
Curent Weighted performance1037.8
Current official/published rating (highest between Raw, WR and WP)1234.6
Current floor (min rating allowed)753.2
Current highest rating achieved1253.2
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)±165.9
Current Raw change used (final)0.0
Projected new Raw rating1199.6
Projected new Weighed rating1231.3
Projected new Weighted performance1037.8
Projected new official/published rating (highest between new Raw, new WR and new WP)1231.3
Projected effective change (new Official - current Official)-3.3
Projected new highest rating1253.2
Projected new floor753.2
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 rating1218.0
Curent Weighted rating1218.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1218.0
Current floor (min rating allowed)753.2
Current highest rating achieved1218.0
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)±161.6
Current Raw change used (final)0.0
Projected new Raw rating1218.0
Projected new Weighed rating1218.0
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1218.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1218.0
Projected new floor753.2
Projected new K-facor36
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
2 Cape Winelands Schools - HS Trials 1 2024 (U15 Boys) 2024/02/17 2024/02/17 Cape Winelands (WCW) Rapid 35 0.66 6 6 2.0 1273.8 1238.8 Analysis
1 Cape Winelands - Marie Delport Memorial 2024 (Open) 2024/01/27 2024/01/28 Cape Winelands (WCW) Standard 70 0.87 6 5 2.0 1278.8 1267.7 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
27 Cape Winelands Schools - HS Trials 1 2024 (U15 Boys) 2024/02/17 2024/02/17 Cape Winelands (WCW) Rapid 35 0.66 6 6 2.0 1273.8 1238.8 Analysis
26 Cape Winelands - Marie Delport Memorial 2024 (Open) 2024/01/27 2024/01/28 Cape Winelands (WCW) Standard 70 0.87 6 5 2.0 1278.8 1267.7 Analysis
25 CW Top Schools 2023 (U15 Mix) 2023/08/26 2023/08/26 Cape Winelands (WCW) Rapid 32 0.63 5 5 2.5 1289.7 1253.2 Analysis
24 Cape Winelands Schools Chess - Trials 1 2023 (U15 Boys) 2023/02/25 2023/02/25 Cape Winelands (WCW) Standard 60 0.83 5 5 2.0 1324.1 1304.8 Analysis
23 CW Grass Roots Tournament 2022 (U13 Boys) 2022/11/19 2022/11/19 Cape Winelands (WCW) Standard 60 0.83 5 5 5.0 1248.5 1191.6 Analysis
22 Stellenbosch Primary 2022 (U13) 2022/08/13 2022/08/13 Cape Winelands (WCW) Rapid 30 0.60 6 6 4.0 1232.1 1230.5 Analysis
21 Rhenish Primary Tournament 2022 (U14) 2022/05/14 2022/05/14 Cape Winelands (WCW) Rapid 30 0.60 5 5 3.0 1222.4 1215.4 Analysis
20 Ceres Open 2022 (B) 2022/04/23 2022/04/23 Cape Winelands (WCW) Standard 65 0.85 6 6 3.0 1236.2 1198.0 Analysis
19 Cape Winelands Schools 2022 (U13 Boys) 2022/03/12 2022/03/12 Cape Winelands (WCW) Standard 60 0.83 5 5 3.0 1231.7 1176.8 Analysis
18 Central Winelands Schools Individual Trials 2022 (U13 Boys) 2022/02/19 2022/02/19 Cape Winelands (WCW) Rapid 35 0.66 5 5 3.0 1165.4 1191.8 Analysis
17 Cape Winelands Open 2022 (U14) 2022/02/12 2022/02/13 Cape Winelands (WCW) Standard 70 0.87 6 6 4.0 1165.4 1112.8 Analysis
16 Drakenstein Pioneers Inaugural 2020 (C) 2020/03/14 2020/03/14 Cape Winelands (WCW) Standard 60 0.83 5 5 2.0 1190.3 1138.0 Analysis
15 2020 Welgemoed Chess Challenge (U12) 2020/02/29 2020/02/29 Cape Town (WCT) Rapid 30 0.60 5 5 3.0 1149.2 1153.2 Analysis
14 Paul Roos Blitz 2020 2020/02/22 2020/02/22 Cape Winelands (WCW) Blitz 5 0.18 9 9 4.0 1149.2 1200.0 Analysis
13 Cape Winelands Schools Trials 1 2020 (U11 Boys) 2020/02/08 2020/02/08 Cape Winelands (WCW) Rapid 30 0.60 6 6 3.0 1149.2 1153.2 Analysis
12 Back to School Rapid 2020 (Boys) 2020/02/01 2020/02/01 West Coast (WCU) Rapid 20 0.47 5 5 2.0 1149.2 1153.2 Analysis
11 Stellenbosch Primary 2019 (U12) 2019/08/31 2019/08/31 Cape Winelands (WCW) Rapid 30 0.60 7 7 4.0 1113.9 1149.6 Analysis
10 2019 Western Province League (E) 2019/07/27 2019/08/10 Cape Town (WCT) Standard 60 0.83 9 3 2.0 1113.9 1105.6 Analysis
9 Cape Winelands Schools - Top Schools 2019 (U13 Mix) 2019/07/27 2019/07/27 Cape Winelands (WCW) Rapid 30 0.60 5 5 4.0 1087.7 1108.0 Analysis
8 Drakenstein Dragons Rapid 2019 (U11) 2019/06/15 2019/06/15 Cape Winelands (WCW) Rapid 15 0.39 7 7 3.5 1078.0 1077.6 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 11 4 0 7 4.0 36.4 -115.9 1262.1 1146.2
White 6 1 0 5 1.0 16.7 -283.3 1290.5 1007.1
Black 5 3 0 2 3.0 60.0 85.0 1228.1 1313.1
Standard All 5 2 0 3 2.0 40.0 -85.0 1345.1 1260.1
White 3 1 0 2 1.0 33.3 -141.7 1369.7 1228.1
Black 2 1 0 1 1.0 50.0 0.0 1308.3 1308.3
Rapid All 6 2 0 4 2.0 33.3 -141.7 1192.9 1051.3
White 3 0 0 3 0.0 0.0 -425.0 1211.2 786.2
Black 3 2 0 1 2.0 66.7 141.7 1174.7 1316.4
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 157 79 5 73 81.5 51.9 16.2 1175.6 1191.8
White 80 39 2 39 40.0 50.0 0.0 1172.4 1172.4
Black 77 40 3 34 41.5 53.9 33.1 1178.9 1212.0
Standard All 51 27 1 23 27.5 53.9 33.3 1190.2 1223.6
White 26 14 0 12 14.0 53.8 32.7 1178.5 1211.2
Black 25 13 1 11 13.5 54.0 34.0 1202.5 1236.5
Rapid All 97 48 4 45 50.0 51.5 13.1 1154.1 1167.2
White 50 23 2 25 24.0 48.0 -17.0 1156.1 1139.1
Black 47 25 2 20 26.0 55.3 45.2 1151.8 1197.0
Blitz All 9 4 0 5 4.0 44.4 -47.2 1324.1 1276.8
White 4 2 0 2 2.0 50.0 0.0 1335.7 1335.7
Black 5 2 0 3 2.0 40.0 -85.0 1314.8 1229.8
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1090137694 Lombaard, R (Romelio) 3 2.0 2 0 1 66.7 1265.1 141.7 1406.7 View list
2 109088275 Zungula, C (Chulumanco) 3 0.0 0 0 3 0.0 1143.5 -425.0 718.5 View list
3 2070097094 Baartman, N (Nicole) 2 2.0 2 0 0 100.0 1087.7 425.0 1512.7 View list
4 206078295 Arries, TE (Tyra Elrihia) 2 2.0 2 0 0 100.0 1087.7 425.0 1512.7 View list
5 1100098105 Fransman, B (Benito) 2 2.0 2 0 0 100.0 1087.7 425.0 1512.7 View list
6 2090115876 George, H (Hayley-Ann) 2 2.0 2 0 0 100.0 1173.0 425.0 1598.0 View list
7 2060108658 Marais, C (Chante) 2 2.0 2 0 0 100.0 1087.7 425.0 1512.7 View list
8 1090098025 De Klerk, H (Hanro) 2 1.0 1 0 1 50.0 1255.3 0.0 1255.3 View list
9 1090137478 Koopman, J (Jayden) 2 1.0 1 0 1 50.0 1219.6 0.0 1219.6 View list
10 2090101915 Maart, M (Mia) 2 1.0 1 0 1 50.0 1227.3 0.0 1227.3 View list
11 108068738 Bester, C (Christoff) 2 0.0 0 0 2 0.0 1155.3 -425.0 730.3 View list
12 2060108662 Luyt, I (Imke) 2 0.0 0 0 2 0.0 1087.7 -425.0 662.7 View list
13 1100118430 Springveldt, L (Lael) 2 0.0 0 0 2 0.0 1198.6 -425.0 773.6 View list
14 1080103429 Winter, C (Cuthanzario) 2 0.0 0 0 2 0.0 1128.9 -425.0 703.9 View list
15 1060117674 Adams, M (Marlin) 1 1.0 1 0 0 100.0 1236.2 425.0 1661.2 View list
16 1090151233 Adams, H (Hyrin) 1 1.0 1 0 0 100.0 1324.1 425.0 1749.1 View list
17 1080161483 Adams, C (Cuan) 1 1.0 1 0 0 100.0 1289.7 425.0 1714.7 View list
18 1100141748 Arries, A (Aldavian) 1 1.0 1 0 0 100.0 1248.5 425.0 1673.5 View list
19 1050132442 Appollis, M (Martino) 1 1.0 1 0 0 100.0 1149.2 425.0 1574.2 View list
20 108082122 Carstens, J (Joshua) 1 1.0 1 0 0 100.0 1113.9 425.0 1538.9 View list