Player Page

Grobbelaar, R (Ruan)
Dob: 2011/12/06 (U14)
Gender: Male
Chess SA id: 1110150423
FIDE id:
Region: Cape Town (WCT)
Citizen: RSA
Title(s):
Last active: 2024/05/11 (6 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 rating1222.1
Curent Weighted rating1191.6
Curent Weighted performance1128.1
Current official/published rating (highest between Raw, WR and WP)1222.1
Current floor (min rating allowed)731.1
Current highest rating achieved1231.1
Current K-factor36
Games played this month4
Score (S)1.5
Expected score (We)1.59
Difference (S-We)-0.09
Current Raw change (no limits, including tournament time weight)-1.5
Current min/max change allowed (with limits)±160.7
Current Raw change used (final)-1.5
Projected new Raw rating1220.6
Projected new Weighed rating1193.7
Projected new Weighted performance1128.1
Projected new official/published rating (highest between new Raw, new WR and new WP)1220.6
Projected effective change (new Official - current Official)-1.5
Projected new highest rating1231.1
Projected new floor731.1
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 rating1205.0
Curent Weighted rating1201.2
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1205.0
Current floor (min rating allowed)705.0
Current highest rating achieved1205.0
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)±164.6
Current Raw change used (final)0.0
Projected new Raw rating1205.0
Projected new Weighed rating1201.5
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1205.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1205.0
Projected new floor705.0
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 rating1209.8
Curent Weighted rating1164.8
Curent Weighted performance1102.2
Current official/published rating (highest between Raw, WR and WP)1209.8
Current floor (min rating allowed)748.7
Current highest rating achieved1248.7
Current K-factor36
Games played this month4
Score (S)1.5
Expected score (We)1.52
Difference (S-We)-0.02
Current Raw change (no limits, including tournament time weight)-0.7
Current min/max change allowed (with limits)±163.5
Current Raw change used (final)-0.7
Projected new Raw rating1209.1
Projected new Weighed rating1167.4
Projected new Weighted performance1102.2
Projected new official/published rating (highest between new Raw, new WR and new WP)1209.1
Projected effective change (new Official - current Official)-0.7
Projected new highest rating1248.7
Projected new floor748.7
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)748.7
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 floor748.7
Projected new K-facor36
Tournaments
Tournament: Steinitz Chess Festival 2024 (U14)
Start: 2024/05/11  End: 2024/05/11  Host: WCT  Type: Rapid   Time: 20  Time weight: 0.47  Rounds: 4
Games: 4  Score: 1.5
Main rating: 1222.1  Rating gain/loss: -1.5
Type rating: 1209.8  Rating gain/loss: -0.7
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
3 Steinitz Chess Festival 2024 (U14) 2024/05/11 2024/05/11 Cape Town (WCT) Rapid 20 0.47 5 4 1.5 1222.1 1209.8 Analysis
2 Cape Town Open Rapid Chess Championship 2024 (U14) 2024/03/16 2024/03/16 Cape Town (WCT) Rapid 25 0.54 6 6 4.0 1181.9 1129.9 Analysis
1 North District School Trials 2024 (U13 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 5 2.5 1173.5 1200.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
7 Steinitz Chess Festival 2024 (U14) 2024/05/11 2024/05/11 Cape Town (WCT) Rapid 20 0.47 5 4 1.5 1222.1 1209.8 Analysis
6 Cape Town Open Rapid Chess Championship 2024 (U14) 2024/03/16 2024/03/16 Cape Town (WCT) Rapid 25 0.54 6 6 4.0 1181.9 1129.9 Analysis
5 North District School Trials 2024 (U13 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 5 2.5 1173.5 1200.0 Analysis
4 GPCA Rapid 2023 (U14) 2023/06/24 2023/06/24 Cape Town (WCT) Rapid 25 0.54 7 7 1.0 1217.2 1213.1 Analysis
3 Steinitz Open 2023 (U14) 2023/05/27 2023/05/27 Cape Town (WCT) Rapid 20 0.47 5 4 1.0 1231.1 1248.7 Analysis
2 Cape Town Open 2023 (U14) 2023/03/25 2023/03/25 Cape Town (WCT) Rapid 25 0.54 6 6 4.0 1203.5 1208.4 Analysis
1 Laerskool Welgemoed Rapid 2023 (U14) 2023/02/11 2023/02/11 Cape Town (WCT) Rapid 25 0.54 6 6 3.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 15 7 2 6 8.0 53.3 28.3 1293.4 1321.7
White 8 4 2 2 5.0 62.5 106.3 1263.1 1369.4
Black 7 3 0 4 3.0 42.9 -60.7 1327.9 1267.2
Standard All 5 2 1 2 2.5 50.0 0.0 1229.4 1229.4
White 3 1 1 1 1.5 50.0 0.0 1195.7 1195.7
Black 2 1 0 1 1.0 50.0 0.0 1280.0 1280.0
Rapid All 10 5 1 4 5.5 55.0 42.5 1325.4 1367.9
White 5 3 1 1 3.5 70.0 170.0 1303.6 1473.6
Black 5 2 0 3 2.0 40.0 -85.0 1347.1 1262.1
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
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 38 16 2 20 17.0 44.7 -44.7 1269.9 1225.1
White 21 11 2 8 12.0 57.1 60.7 1245.4 1306.2
Black 17 5 0 12 5.0 29.4 -175.0 1300.0 1125.0
Standard All 5 2 1 2 2.5 50.0 0.0 1229.4 1229.4
White 3 1 1 1 1.5 50.0 0.0 1195.7 1195.7
Black 2 1 0 1 1.0 50.0 0.0 1280.0 1280.0
Rapid All 33 14 1 18 14.5 43.9 -51.5 1276.0 1224.5
White 18 10 1 7 10.5 58.3 70.8 1253.7 1324.6
Black 15 4 0 11 4.0 26.7 -198.3 1302.7 1104.4
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1110150425 Haman, R (Rico) 2 0.5 0 1 1 25.0 1202.0 -212.5 989.5 View list
2 2100152908 Adams, S (Sofia) 1 1.0 1 0 0 100.0 1203.5 425.0 1628.5 View list
3 1110132060 Cloete, J (Joel) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
4 1100157083 Dippenaar, R (Ruben) 1 1.0 1 0 0 100.0 1231.1 425.0 1656.1 View list
5 1120193631 Friedrich, M (Max) 1 1.0 1 0 0 100.0 1173.5 425.0 1598.5 View list
6 1110150421 Faure, D (Douglas) 1 1.0 1 0 0 100.0 1181.9 425.0 1606.9 View list
7 2110150428 Kirthan, V (Vajra) 1 1.0 1 0 0 100.0 1181.9 425.0 1606.9 View list
8 1110157959 Kay, T (Tyler) 1 1.0 1 0 0 100.0 1217.2 425.0 1642.2 View list
9 1110103542 Marais, E (Enzo) 1 1.0 1 0 0 100.0 1181.9 425.0 1606.9 View list
10 1100152913 Lucas, K (Kyle) 1 1.0 1 0 0 100.0 1203.5 425.0 1628.5 View list
11 1120193642 Mashuro, D (Devine) 1 1.0 1 0 0 100.0 1173.5 425.0 1598.5 View list
12 2100109062 Mayekiso, A (Amila) 1 1.0 1 0 0 100.0 1203.5 425.0 1628.5 View list
13 1100143762 Nyandebvu, M (Mannasseh) 1 1.0 1 0 0 100.0 1181.9 425.0 1606.9 View list
14 1100150434 Sandi, D (Dylan) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
15 1100150438 Shiceka, O (Okuhle) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
16 2120138446 Stevens, DA (Danielle-Ann) 1 1.0 1 0 0 100.0 1222.1 425.0 1647.1 View list
17 1110152922 Tyakane, A (Amila) 1 1.0 1 0 0 100.0 1203.5 425.0 1628.5 View list
18 1120193651 Slabbert, J (James) 1 0.5 0 1 0 50.0 1173.5 0.0 1173.5 View list
19 210093629 Linde, M (Morgan) 1 0.0 0 0 1 0.0 1217.2 -425.0 792.2 View list
20 1100141893 Hugget, E (Edjuan) 1 0.0 0 0 1 0.0 1217.2 -425.0 792.2 View list