Chess South Africa
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Chess South Africa
Grootboom, EE (Elrich)
Dob:
1977/04/17 (Adult)
Gender:
Male
Chess SA id:
177011444
FIDE id:
Region:
Ekurhuleni (GE)
Citizen:
RSA
Title(s):
PA,NI
Last active:
2023/12/15 (154 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
1673.1
Curent Weighted rating
1681.3
Curent Weighted performance
1139.0
Current official/published rating (highest between Raw, WR and WP)
1681.3
Current floor (min rating allowed)
1195.2
Current highest rating achieved
1695.2
Current K-factor
28
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)
±84.5
Current Raw change used (final)
0.0
Projected new Raw rating
1673.1
Projected new Weighed rating
1680.8
Projected new Weighted performance
1139.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1680.8
Projected effective change (new Official - current Official)
-0.4
Projected new highest rating
1695.2
Projected new floor
1195.2
Projected new K-facor
28
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
1710.5
Curent Weighted rating
1699.3
Curent Weighted performance
1035.2
Current official/published rating (highest between Raw, WR and WP)
1710.5
Current floor (min rating allowed)
1210.5
Current highest rating achieved
1710.5
Current K-factor
28
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)
±80.1
Current Raw change used (final)
0.0
Projected new Raw rating
1710.5
Projected new Weighed rating
1701.0
Projected new Weighted performance
1035.2
Projected new official/published rating (highest between new Raw, new WR and new WP)
1710.5
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1710.5
Projected new floor
1210.5
Projected new K-facor
28
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
1604.4
Curent Weighted rating
1644.9
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1644.9
Current floor (min rating allowed)
1173.0
Current highest rating achieved
1673.0
Current K-factor
28
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)
±93.2
Current Raw change used (final)
0.0
Projected new Raw rating
1604.4
Projected new Weighed rating
1640.7
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1640.7
Projected effective change (new Official - current Official)
-4.3
Projected new highest rating
1673.0
Projected new floor
1173.0
Projected new K-facor
28
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
1675.5
Curent Weighted rating
1675.5
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1675.5
Current floor (min rating allowed)
1173.0
Current highest rating achieved
1675.5
Current K-factor
28
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)
±84.2
Current Raw change used (final)
0.0
Projected new Raw rating
1675.5
Projected new Weighed rating
1675.5
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1675.5
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1675.5
Projected new floor
1173.0
Projected new K-facor
28
Tournaments
History
Did not participate this month.
Did not participate this year.
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
8
Chess Power House Festive Rapid 2023 (B)
2023/12/15
2023/12/15
Johannesburg Metro (GJM)
Rapid
20
0.47
6
6
3.0
1695.2
1675.5
Analysis
7
Chess Power House Feb RR 2023 (C)
2023/02/18
2023/02/18
Johannesburg Metro (GJM)
Standard
62
0.84
5
4
3.0
1663.2
1660.5
Analysis
6
Heidelberg Open 2020 (Prestige)
2020/01/31
2020/02/02
Sedibeng (GSV)
Standard
120
1.00
5
4
1.5
1672.2
1673.1
Analysis
5
2019 Inter Region Chess Championships
2020/01/09
2020/01/12
4 Knights (4K)
Standard
120
1.00
7
5
3.0
1657.1
1656.9
Analysis
4
Chess Power House 2019 (B)
2019/08/24
2019/08/24
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1667.1
1668.7
Analysis
3
Chess Power House Closed 2019
2019/01/17
2019/02/28
Ekurhuleni (GE)
Standard
90
0.94
7
7
1.5
1658.4
1658.9
Analysis
2
2018 Inter Region Chess Championships
2018/12/21
2018/12/24
4 Knights (4K)
Standard
120
1.00
7
6
3.5
1639.9
1639.9
Analysis
1
South African Inter Regional Championships 2017
2018/01/09
2018/01/12
4 Knights (4K)
Standard
120
1.00
7
6
2.0
1675.5
1675.5
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
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
Standard
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
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
43
15
11
17
20.5
47.7
-19.8
1657.9
1638.2
White
22
9
5
8
11.5
52.3
19.3
1603.9
1623.3
Black
21
6
6
9
9.0
42.9
-60.7
1714.5
1653.8
Standard
All
37
12
11
14
17.5
47.3
-23.0
1710.6
1687.6
White
19
9
5
5
11.5
60.5
89.5
1624.4
1713.8
Black
18
3
6
9
6.0
33.3
-141.7
1801.5
1659.9
Rapid
All
6
3
0
3
3.0
50.0
0.0
1333.3
1333.3
White
3
0
0
3
0.0
0.0
-425.0
1474.5
1049.5
Black
3
3
0
0
3.0
100.0
425.0
1192.2
1617.2
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
195028678
Oberholzer, F (Francois)
2
0.5
0
1
1
25.0
1657.7
-212.5
1445.2
View list
2
186020282
Maluleke, PE (Pfumelani)
1
1.0
1
0
0
100.0
1657.1
425.0
2082.1
View list
3
183068085
Magagula, R (Raymond)
1
1.0
1
0
0
100.0
1663.2
425.0
2088.2
View list
4
100017074
Landitho, M (Mzwandile)
1
1.0
1
0
0
100.0
1639.9
425.0
2064.9
View list
5
107077218
Lake, E (Ethan)
1
1.0
1
0
0
100.0
1667.1
425.0
2092.1
View list
6
197013325
Jacobs, CL (Cavan)
1
1.0
1
0
0
100.0
1657.1
425.0
2082.1
View list
7
1760157178
Ambrose, T (Thomas)
1
1.0
1
0
0
100.0
1695.2
425.0
2120.2
View list
8
183057228
Mathabe, K (Kabelo)
1
1.0
1
0
0
100.0
1695.2
425.0
2120.2
View list
9
173022117
Mbedza, R (Richard)
1
1.0
1
0
0
100.0
1658.4
425.0
2083.4
View list
10
174024260
Mokomele, A (Andrew)
1
1.0
1
0
0
100.0
1663.2
425.0
2088.2
View list
11
1060107811
Mokwena, TK (Thato Kole)
1
1.0
1
0
0
100.0
1667.1
425.0
2092.1
View list
12
1990190892
Molefe, K (Kgosiemang)
1
1.0
1
0
0
100.0
1695.2
425.0
2120.2
View list
13
163027064
Nel, A (Andre)
1
1.0
1
0
0
100.0
1672.2
425.0
2097.2
View list
14
107092639
Simpson, M (Michael)
1
1.0
1
0
0
100.0
1639.9
425.0
2064.9
View list
15
172035522
Snijders, K (Kees)
1
1.0
1
0
0
100.0
1639.9
425.0
2064.9
View list
16
197042228
Vreken, J (Jandre)
1
1.0
1
0
0
100.0
1675.5
425.0
2100.5
View list
17
110086011
Felix, R (Raphael)
1
0.5
0
1
0
50.0
1663.2
0.0
1663.2
View list
18
105059134
De Swardt, E (Eduan)
1
0.5
0
1
0
50.0
1672.2
0.0
1672.2
View list
19
103092822
Booi, N (Nande)
1
0.5
0
1
0
50.0
1667.1
0.0
1667.1
View list
20
188012841
Hoole, CG (Christian)
1
0.5
0
1
0
50.0
1675.5
0.0
1675.5
View list