Chess South Africa
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Chess South Africa
Vorster, SPM (Stephanus)
Dob:
1969/10/16 (Adult)
Gender:
Male
Chess SA id:
169042155
FIDE id:
Vorster
Region:
Bojanala Platina (NBR)
Citizen:
RSA
Title(s):
Last active:
2024/07/21 (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
Current Raw rating
1685.8
Current Weighted rating
1750.2
Current Weighted performance
1482.5
Current official/published rating (highest between Raw, WR and WP)
1750.2
Current highest rating achieved
1820.4
Current floor (min rating allowed)
1320.4
Current K-factor
24
Games played this month
10
Score (S)
6.5
Expected score (We)
5.68
Difference (S-We)
0.68
Current Raw change (no limits, including tournament time weight)
16.3
Current min/max change allowed (with limits)
±83.0
Current Raw change used (final)
16.3
Projected new Raw rating
1702.1
Projected new Weighed rating
1608.2
Projected new Weighted performance
1694.3
Projected new final Raw rating (if new WP > new Raw)
1702.1
Projected new highest rating
1820.4
Projected new floor
1320.4
Projected new K-facor
24
Projected new official/published rating (highest between new Raw, new WR and new WP)
1702.1
Projected effective change (new Official - current Official)
-48.1
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
1655.5
Current Weighted rating
1733.5
Current Weighted performance
1421.1
Current official/published rating (highest between Raw, WR and WP)
1733.5
Current highest rating achieved
1821.2
Current floor (min rating allowed)
1321.2
Current K-factor
24
Games played this month
10
Score (S)
6.5
Expected score (We)
5.41
Difference (S-We)
1.09
Current Raw change (no limits, including tournament time weight)
26.2
Current min/max change allowed (with limits)
±86.7
Current Raw change used (final)
26.2
Projected new Raw rating
1681.7
Projected new Weighed rating
1592.3
Projected new Weighted performance
1653.1
Projected new final Raw rating (if new WP > new Raw)
1681.7
Projected new highest rating
1821.2
Projected new floor
1321.2
Projected new K-facor
24
Projected new official/published rating (highest between new Raw, new WR and new WP)
1681.7
Projected effective change (new Official - current Official)
-51.8
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
1761.7
Current Weighted rating
1790.7
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1790.7
Current highest rating achieved
1793.3
Current floor (min rating allowed)
1293.3
Current K-factor
28
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)
±74.5
Current Raw change used (final)
0.0
Projected new Raw rating
1761.7
Projected new Weighed rating
1647.4
Projected new Weighted performance
896.0
Projected new final Raw rating (if new WP > new Raw)
1761.7
Projected new highest rating
1793.3
Projected new floor
1293.3
Projected new K-facor
28
Projected new official/published rating (highest between new Raw, new WR and new WP)
1761.7
Projected effective change (new Official - current Official)
-29.0
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
1789.0
Current Weighted rating
1788.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1789.0
Current highest rating achieved
1789.0
Current floor (min rating allowed)
1289.0
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)
±71.6
Current Raw change used (final)
0.0
Projected new Raw rating
1789.0
Projected new Weighed rating
1645.3
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1789.0
Projected new floor
1289.0
Projected new K-facor
28
Projected new official/published rating (highest between new Raw, new WR and new WP)
1789.0
Projected effective change (new Official - current Official)
=0.0
Tournaments
History
Tournament:
Incognito Invitational 2024 (A)
Start:
2024/07/21
End:
2024/07/21
Host:
NBR
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
4.0
Main rating:
1685.8
Rating gain/loss:
30.7
Type rating:
1655.5
Rating gain/loss:
40.1
Analysis
Tournament:
Chess Power House July Open 2024 (A)
Start:
2024/07/20
End:
2024/07/20
Host:
GJM
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
2.5
Main rating:
1685.8
Rating gain/loss:
-14.3
Type rating:
1655.5
Rating gain/loss:
-13.9
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
6
Incognito Invitational 2024 (A)
2024/07/21
2024/07/21
Bojanala Platina (NBR)
Standard
60
0.83
5
5
4.0
1685.8
1655.5
Analysis
5
Chess Power House July Open 2024 (A)
2024/07/20
2024/07/20
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.5
1685.8
1655.5
Analysis
4
Boksburg Rapid 2024 (A)
2024/05/14
2024/06/11
Ekurhuleni (GE)
Rapid
30
0.60
5
5
3.0
1687.2
1793.3
Analysis
3
Spartan Bishops Chess Championships 2024 (Seniors)
2024/05/04
2024/05/05
Bojanala Platina (NBR)
Standard
60
0.83
5
5
4.5
1691.4
1659.1
Analysis
2
NG Kerk Vanderbijlpark Suid 2024 (A+B)
2024/02/24
2024/02/24
Sedibeng (GSV)
Standard
61
0.84
5
5
3.0
1709.7
1679.5
Analysis
1
2024 Piet Robbertse Open Chess Tournament (A)
2024/02/03
2024/02/04
Tshwane (GTP)
Standard
90
0.94
5
4
0.0
1779.6
1752.2
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
37
Incognito Invitational 2024 (A)
2024/07/21
2024/07/21
Bojanala Platina (NBR)
Standard
60
0.83
5
5
4.0
1685.8
1655.5
Analysis
36
Chess Power House July Open 2024 (A)
2024/07/20
2024/07/20
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.5
1685.8
1655.5
Analysis
35
Boksburg Rapid 2024 (A)
2024/05/14
2024/06/11
Ekurhuleni (GE)
Rapid
30
0.60
5
5
3.0
1687.2
1793.3
Analysis
34
Spartan Bishops Chess Championships 2024 (Seniors)
2024/05/04
2024/05/05
Bojanala Platina (NBR)
Standard
60
0.83
5
5
4.5
1691.4
1659.1
Analysis
33
NG Kerk Vanderbijlpark Suid 2024 (A+B)
2024/02/24
2024/02/24
Sedibeng (GSV)
Standard
61
0.84
5
5
3.0
1709.7
1679.5
Analysis
32
2024 Piet Robbertse Open Chess Tournament (A)
2024/02/03
2024/02/04
Tshwane (GTP)
Standard
90
0.94
5
4
0.0
1779.6
1752.2
Analysis
31
2023 Moja Chess Extravaganza (Prestige)
2023/09/30
2023/10/04
Frances Baard (NCF)
Standard
120
1.00
9
9
4.5
1740.0
1730.8
Analysis
30
Chess Power House 2023 (A)
2023/08/19
2023/08/20
Johannesburg Metro (GJM)
Standard
90
0.94
5
5
2.0
1792.3
1786.2
Analysis
29
Eureka Open 2023 (A)
2023/07/29
2023/07/29
Sedibeng (GSV)
Standard
60
0.83
5
5
2.5
1820.4
1821.2
Analysis
28
Boksburg Chess Club Rapid 2023
2023/06/20
2023/06/20
Ekurhuleni (GE)
Rapid
30
0.60
5
1
1.0
1820.3
1793.0
Analysis
27
Chess Power House 2nd RR 2022 (A)
2022/08/20
2022/08/21
Johannesburg Metro (GJM)
Standard
90
0.94
5
5
2.5
1745.4
1742.8
Analysis
26
2022 Alekhine Open (A)
2022/08/13
2022/08/14
Tshwane (GTP)
Standard
90
0.94
5
5
2.0
1745.4
1742.8
Analysis
25
JMC Womens Day 2022 (FIDE Open)
2022/08/06
2022/08/09
Johannesburg Metro (GJM)
Standard
120
1.00
6
6
4.0
1745.4
1742.8
Analysis
24
Chessheroes Youth Day 2022 (A1)
2022/06/16
2022/06/18
Johannesburg Metro (GJM)
Standard
120
1.00
5
4
2.5
1726.6
1724.0
Analysis
23
Moja Open 2022 (Prestige)
2022/03/19
2022/03/22
Frances Baard (NCF)
Standard
120
1.00
7
7
3.5
1706.4
1703.3
Analysis
22
Ekurhuleni Chess Open 2022 (A)
2022/01/07
2022/01/09
Ekurhuleni (GE)
Standard
90
0.94
7
7
4.0
1734.3
1732.4
Analysis
21
NC Open 2021 (A)
2021/10/22
2021/10/24
Frances Baard (NCF)
Standard
120
1.00
5
5
4.0
1716.4
1711.7
Analysis
20
Pinnacle College Waterfall Open (Premier)
2021/10/02
2021/10/03
Johannesburg Metro (GJM)
Standard
90
0.94
6
6
2.5
1716.4
1711.7
Analysis
19
2021 Gauteng North Open Tournament (A)
2021/08/28
2021/08/29
Tshwane (GTP)
Standard
90
0.94
5
5
2.0
1733.2
1726.5
Analysis
18
2021 Alekhine Open (A)
2021/08/14
2021/08/15
Tshwane (GTP)
Standard
90
0.94
5
5
2.5
1733.2
1726.5
Analysis
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
29
14
6
9
17.0
58.6
73.3
1526.0
1599.3
White
16
10
3
3
11.5
71.9
185.9
1439.4
1625.3
Black
13
4
3
6
5.5
42.3
-65.4
1632.6
1567.3
Standard
All
24
12
4
8
14.0
58.3
70.8
1512.2
1583.0
White
13
9
1
3
9.5
73.1
196.2
1440.3
1636.4
Black
11
3
3
5
4.5
40.9
-77.3
1597.1
1519.8
Rapid
All
5
2
2
1
3.0
60.0
85.0
1592.4
1677.4
White
3
1
2
0
2.0
66.7
141.7
1435.4
1577.0
Black
2
1
0
1
1.0
50.0
0.0
1828.0
1828.0
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
194
90
44
60
112.0
57.7
65.7
1616.6
1682.4
White
98
51
20
27
61.0
62.2
104.1
1593.3
1697.3
Black
96
39
24
33
51.0
53.1
26.6
1640.5
1667.1
Standard
All
168
71
40
57
91.0
54.2
35.4
1650.1
1685.5
White
84
42
17
25
50.5
60.1
86.0
1633.8
1719.8
Black
84
29
23
32
40.5
48.2
-15.2
1666.4
1651.2
Rapid
All
26
19
4
3
21.0
80.8
261.5
1400.6
1662.2
White
14
9
3
2
10.5
75.0
212.5
1350.2
1562.7
Black
12
10
1
1
10.5
87.5
318.8
1459.5
1778.2
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
103007373
Dinham, J (James)
5
3.0
2
2
1
60.0
1722.4
85.0
1807.4
View list
2
187025727
Mpya, TM (Tshediso)
5
1.5
1
1
3
30.0
1739.7
-170.0
1569.7
View list
3
182025885
Mthunzi, B (Brighton)
5
1.5
1
1
3
30.0
1717.7
-170.0
1547.7
View list
4
194073176
Chueu, C (Calvin)
4
2.5
2
1
1
62.5
1725.5
106.3
1831.8
View list
5
1070104078
Price, DR (Daelen)
4
2.5
1
3
0
62.5
1740.6
106.3
1846.8
View list
6
104069713
Vorster, T (Tyrone)
4
2.0
0
4
0
50.0
1771.4
0.0
1771.4
View list
7
104053107
Govender, Y (Yaduvir)
4
1.5
0
3
1
37.5
1716.3
-106.3
1610.0
View list
8
103046660
Schroeder, D (Daniel)
3
1.0
1
0
2
33.3
1725.4
-141.7
1583.7
View list
9
101023373
Mlahleki, V (Vusimuzi)
3
0.5
0
1
2
16.7
1741.3
-283.3
1458.0
View list
10
191012376
Hercules, BV (Benjamin)
3
0.0
0
0
3
0.0
1711.1
-425.0
1286.1
View list
11
105058538
Smit, D (Devon)
3
0.0
0
0
3
0.0
1733.4
-425.0
1308.4
View list
12
194019178
Madiba, CM (Carpediem)
2
2.0
2
0
0
100.0
1717.8
425.0
2142.8
View list
13
1790140016
Monamatha, M (Moeketsi)
2
2.0
2
0
0
100.0
1688.6
425.0
2113.6
View list
14
1100103439
Mungal, E (Ethan)
2
2.0
2
0
0
100.0
1725.3
425.0
2150.3
View list
15
108076196
Potgieter, E (Edward)
2
2.0
2
0
0
100.0
1709.9
425.0
2134.9
View list
16
106053297
Govender, S (Shevern)
2
1.5
1
1
0
75.0
1707.4
212.5
1919.9
View list
17
107069948
Jones, W (William)
2
1.5
1
1
0
75.0
1739.3
212.5
1951.8
View list
18
182017839
Lesuthu, KM (Kali)
2
1.5
1
1
0
75.0
1715.3
212.5
1927.8
View list
19
155022650
Mendelsohn, DC (David)
2
1.5
1
1
0
75.0
1706.2
212.5
1918.7
View list
20
173022117
Mbedza, R (Richard)
2
1.0
1
0
1
50.0
1727.6
0.0
1727.6
View list