Chess South Africa
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Chess South Africa
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:
2024/10/05 (57 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
Current Raw rating
1222.1
Current Weighted rating
1251.9
Current Weighted performance
1079.5
Current official/published rating (highest between Raw, WR and WP)
1251.9
Current highest rating achieved
1324.1
Current floor (min rating allowed)
824.1
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)
±160.7
Current Raw change used (final)
0.0
Projected new Raw rating
1222.1
Projected new Weighed rating
1150.7
Projected new Weighted performance
1079.5
Projected new final Raw rating (if new WP > new Raw)
1222.1
Projected new highest rating
1324.1
Projected new floor
824.1
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1222.1
Projected effective change (new Official - current Official)
-29.8
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 rating
1227.8
Current Weighted rating
1257.9
Current Weighted performance
1110.8
Current official/published rating (highest between Raw, WR and WP)
1257.9
Current highest rating achieved
1304.8
Current floor (min rating allowed)
804.8
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)
±159.4
Current Raw change used (final)
0.0
Projected new Raw rating
1227.8
Projected new Weighed rating
1156.8
Projected new Weighted performance
1110.8
Projected new final Raw rating (if new WP > new Raw)
1227.8
Projected new highest rating
1304.8
Projected new floor
804.8
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1227.8
Projected effective change (new Official - current Official)
-30.1
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 rating
1199.6
Current Weighted rating
1214.7
Current Weighted performance
954.8
Current official/published rating (highest between Raw, WR and WP)
1214.7
Current highest rating achieved
1253.2
Current floor (min rating allowed)
753.2
Current K-factor
36
s
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)
±165.9
Current Raw change used (final)
0.0
Projected new Raw rating
1199.6
Projected new Weighed rating
1116.5
Projected new Weighted performance
954.8
Projected new final Raw rating (if new WP > new Raw)
1199.6
Projected new highest rating
1253.2
Projected new floor
753.2
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1199.6
Projected effective change (new Official - current Official)
-15.1
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 rating
1218.0
Current Weighted rating
1218.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1218.0
Current highest rating achieved
1218.0
Current floor (min rating allowed)
718.0
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)
±161.6
Current Raw change used (final)
0.0
Projected new Raw rating
1218.0
Projected new Weighed rating
1120.6
Projected new Weighted performance
171.4
Projected new final Raw rating (if new WP > new Raw)
1218.0
Projected new highest rating
1218.0
Projected new floor
718.0
Projected new K-facor
36
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
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
4
Paarl Boys' High Chess Festival 2024 (Elite)
2024/10/04
2024/10/05
Cape Winelands (WCW)
Standard
60
0.83
6
4
1.0
1239.1
1254.1
Analysis
3
Cape Winelands - Top Schools 2024 (U15 Mixed)
2024/07/27
2024/07/27
Cape Winelands (WCW)
Standard
60
0.83
5
4
2.0
1237.0
1259.1
Analysis
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
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
29
Paarl Boys' High Chess Festival 2024 (Elite)
2024/10/04
2024/10/05
Cape Winelands (WCW)
Standard
60
0.83
6
4
1.0
1239.1
1254.1
Analysis
28
Cape Winelands - Top Schools 2024 (U15 Mixed)
2024/07/27
2024/07/27
Cape Winelands (WCW)
Standard
60
0.83
5
4
2.0
1237.0
1259.1
Analysis
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
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
19
7
0
12
7.0
36.8
-111.8
1274.2
1162.3
White
10
1
0
9
1.0
10.0
-340.0
1302.9
962.9
Black
9
6
0
3
6.0
66.7
141.7
1242.3
1383.9
Standard
All
13
5
0
8
5.0
38.5
-98.1
1311.6
1213.6
White
7
1
0
6
1.0
14.3
-303.6
1342.2
1038.6
Black
6
4
0
2
4.0
66.7
141.7
1276.0
1417.7
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
165
82
5
78
84.5
51.2
10.3
1181.1
1191.4
White
84
39
2
43
40.0
47.6
-20.2
1179.5
1159.2
Black
81
43
3
35
44.5
54.9
42.0
1182.9
1224.8
Standard
All
59
30
1
28
30.5
51.7
14.4
1203.9
1218.3
White
30
14
0
16
14.0
46.7
-28.3
1197.5
1169.2
Black
29
16
1
12
16.5
56.9
58.6
1210.4
1269.0
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 id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
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
1080108607
Coetzee, C (Conlinn)
2
0.0
0
0
2
0.0
1281.6
-425.0
856.6
View list
13
2060108662
Luyt, I (Imke)
2
0.0
0
0
2
0.0
1087.7
-425.0
662.7
View list
14
1100118430
Springveldt, L (Lael)
2
0.0
0
0
2
0.0
1198.6
-425.0
773.6
View list
15
1080103429
Winter, C (Cuthanzario)
2
0.0
0
0
2
0.0
1128.9
-425.0
703.9
View list
16
1060117674
Adams, M (Marlin)
1
1.0
1
0
0
100.0
1236.2
425.0
1661.2
View list
17
1090151233
Adams, H (Hyrin)
1
1.0
1
0
0
100.0
1324.1
425.0
1749.1
View list
18
1080161483
Adams, C (Cuan)
1
1.0
1
0
0
100.0
1289.7
425.0
1714.7
View list
19
1100141748
Arries, A (Aldavian)
1
1.0
1
0
0
100.0
1248.5
425.0
1673.5
View list
20
1050132442
Appollis, M (Martino)
1
1.0
1
0
0
100.0
1149.2
425.0
1574.2
View list