Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
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
The
Projected values
below are
NOT
the actual and official values as calculated by the Ratings Bureau.
Main
Standard
Rapid
Blitz
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 rating
1222.1
Curent Weighted rating
1191.6
Curent Weighted performance
1128.1
Current official/published rating (highest between Raw, WR and WP)
1222.1
Current floor (min rating allowed)
731.1
Current highest rating achieved
1231.1
Current K-factor
36
Games played this month
4
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 rating
1220.6
Projected new Weighed rating
1193.7
Projected new Weighted performance
1128.1
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 rating
1231.1
Projected new floor
731.1
Projected new K-facor
36
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 rating
1205.0
Curent Weighted rating
1201.2
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1205.0
Current floor (min rating allowed)
705.0
Current highest rating achieved
1205.0
Current K-factor
36
Games played this month
0
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 rating
1205.0
Projected new Weighed rating
1201.5
Projected new Weighted performance
0.0
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 rating
1205.0
Projected new floor
705.0
Projected new K-facor
36
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 rating
1209.8
Curent Weighted rating
1164.8
Curent Weighted performance
1102.2
Current official/published rating (highest between Raw, WR and WP)
1209.8
Current floor (min rating allowed)
748.7
Current highest rating achieved
1248.7
Current K-factor
36
Games played this month
4
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 rating
1209.1
Projected new Weighed rating
1167.4
Projected new Weighted performance
1102.2
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 rating
1248.7
Projected new floor
748.7
Projected new K-facor
36
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 rating
1200.0
Curent Weighted rating
1200.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current floor (min rating allowed)
748.7
Current highest rating achieved
1200.0
Current K-factor
36
Games played this month
0
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 rating
1200.0
Projected new Weighed rating
1200.0
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 rating
1200.0
Projected new floor
748.7
Projected new K-facor
36
Tournaments
History
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
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
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
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
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
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 id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
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