Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Ohlson, C (Cecil)
Dob:
1961/08/27 (Adult)
Gender:
Male
Chess SA id:
161066248
FIDE id:
Region:
Cape Town (WCT)
Citizen:
RSA
Title(s):
Last active:
2024/04/02 (17 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
1646.6
Curent Weighted rating
1590.4
Curent Weighted performance
1604.1
Current official/published rating (highest between Raw, WR and WP)
1646.6
Current floor (min rating allowed)
1191.1
Current highest rating achieved
1691.1
Current K-factor
28
Games played this month
11
Score (S)
3.5
Expected score (We)
4.12
Difference (S-We)
-0.62
Current Raw change (no limits, including tournament time weight)
-17.4
Current min/max change allowed (with limits)
±87.8
Current Raw change used (final)
-17.4
Projected new Raw rating
1629.2
Projected new Weighed rating
1593.2
Projected new Weighted performance
1604.1
Projected new official/published rating (highest between new Raw, new WR and new WP)
1629.2
Projected effective change (new Official - current Official)
-17.4
Projected new highest rating
1691.1
Projected new floor
1191.1
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
1661.5
Curent Weighted rating
1595.3
Curent Weighted performance
1592.2
Current official/published rating (highest between Raw, WR and WP)
1661.5
Current floor (min rating allowed)
1186.7
Current highest rating achieved
1686.7
Current K-factor
28
Games played this month
11
Score (S)
3.5
Expected score (We)
4.24
Difference (S-We)
-0.74
Current Raw change (no limits, including tournament time weight)
-20.7
Current min/max change allowed (with limits)
±85.9
Current Raw change used (final)
-20.7
Projected new Raw rating
1640.8
Projected new Weighed rating
1598.7
Projected new Weighted performance
1592.2
Projected new official/published rating (highest between new Raw, new WR and new WP)
1640.8
Projected effective change (new Official - current Official)
-20.7
Projected new highest rating
1686.7
Projected new floor
1186.7
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
1668.2
Curent Weighted rating
1655.8
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1668.2
Current floor (min rating allowed)
1168.2
Current highest rating achieved
1668.2
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)
±85.1
Current Raw change used (final)
0.0
Projected new Raw rating
1668.2
Projected new Weighed rating
1657.0
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1668.2
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1668.2
Projected new floor
1168.2
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
1615.6
Curent Weighted rating
1615.6
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1615.6
Current floor (min rating allowed)
1168.2
Current highest rating achieved
1615.6
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)
±91.7
Current Raw change used (final)
0.0
Projected new Raw rating
1615.6
Projected new Weighed rating
1615.6
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1615.6
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1615.6
Projected new floor
1168.2
Projected new K-facor
28
Tournaments
History
Tournament:
South African Closed Chess Championship 2024 (Seniors)
Start:
2024/03/25
End:
2024/04/02
Host:
WCT
Type:
Standard
Time:
150
Time weight:
1.00
Rounds:
11
Games:
11
Score:
3.5
Main rating:
1646.6
Rating gain/loss:
-17.4
Type rating:
1661.5
Rating gain/loss:
-20.7
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
3
South African Closed Chess Championship 2024 (Seniors)
2024/03/25
2024/04/02
Cape Town (WCT)
Standard
150
1.00
11
11
3.5
1646.6
1661.5
Analysis
2
Cape Town Open Chess Championship 2024 (Advanced)
2024/03/15
2024/03/17
Cape Town (WCT)
Standard
90
0.94
6
6
4.5
1621.3
1640.8
Analysis
1
Cape Town Masters Challenge 2024 (Advanced)
2024/01/03
2024/01/07
Cape Town (WCT)
Standard
120
1.00
7
7
5.0
1589.9
1623.2
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
30
South African Closed Chess Championship 2024 (Seniors)
2024/03/25
2024/04/02
Cape Town (WCT)
Standard
150
1.00
11
11
3.5
1646.6
1661.5
Analysis
29
Cape Town Open Chess Championship 2024 (Advanced)
2024/03/15
2024/03/17
Cape Town (WCT)
Standard
90
0.94
6
6
4.5
1621.3
1640.8
Analysis
28
Cape Town Masters Challenge 2024 (Advanced)
2024/01/03
2024/01/07
Cape Town (WCT)
Standard
120
1.00
7
7
5.0
1589.9
1623.2
Analysis
27
Western Cape Closed Championship 2023 (A)
2023/09/23
2023/09/25
Cape Town (WCT)
Standard
120
1.00
6
6
2.5
1592.3
1591.5
Analysis
26
WP Club League 2023 (A)
2023/07/29
2023/09/09
Cape Town (WCT)
Standard
120
1.00
11
11
2.0
1592.3
1591.5
Analysis
25
GPCA Rapid 2023 (Advanced)
2023/06/24
2023/06/24
Cape Town (WCT)
Rapid
25
0.54
7
0
0.0
1594.5
1650.5
Analysis
24
WP Closed 2023 (B)
2023/06/15
2023/06/18
Cape Town (WCT)
Standard
120
1.00
7
7
2.5
1594.5
1592.6
Analysis
23
Cape Town Masters Challenge 2023 (Open)
2023/01/04
2023/01/08
Cape Town (WCT)
Standard
120
1.00
5
5
3.0
1588.6
1589.2
Analysis
22
2022 Western Province Club League (Premier)
2022/08/20
2022/10/01
Cape Town (WCT)
Standard
120
1.00
11
11
5.5
1597.3
1599.0
Analysis
21
South African Open 2022 (Championship)
2022/07/09
2022/07/17
Cape Town (WCT)
Standard
120
1.00
11
11
3.5
1658.9
1660.0
Analysis
20
WP Closed 2022 (B)
2022/06/16
2022/06/16
Cape Town (WCT)
Standard
120
1.00
7
7
3.5
1642.9
1643.5
Analysis
19
2022 South African Closed Chess Championships (Senior)
2022/05/07
2022/05/14
Chess South Africa (CSA)
Standard
120
1.00
9
9
6.5
1614.1
1614.1
Analysis
18
Western Cape Closed 2021 (Championship)
2021/09/24
2021/09/26
Cape Winelands (WCW)
Standard
120
1.00
6
4
0.5
1691.1
1686.1
Analysis
17
CWP Closed 2021 (B)
2021/09/11
2021/09/19
Cape Town (WCT)
Standard
120
1.00
7
7
2.0
1691.1
1686.1
Analysis
16
Western Cape Women`s Month Tournament 2021 (Championship)
2021/08/06
2021/08/09
West Coast (WCU)
Standard
90
0.94
6
6
4.5
1684.3
1686.7
Analysis
15
WP Open 2021 (Championship)
2021/05/08
2021/05/09
Cape Town (WCT)
Standard
70
0.87
6
6
3.0
1668.7
1668.2
Analysis
14
FIDE World Senior Team Championship 2020
2020/03/06
2020/03/12
Czech Republic (CZE)
Standard
150
1.00
7
6
1.5
1648.8
1648.0
Analysis
13
2019 South African Closed Chess Championships (Senior)
2019/12/07
2019/12/17
Cape Town (WCT)
Standard
150
1.00
11
11
7.0
1547.8
1546.8
Analysis
12
2019 Western Cape Closed Chess Championships (Senior)
2019/09/21
2019/09/24
Cape Winelands (WCW)
Standard
120
1.00
6
6
4.0
1635.7
1622.7
Analysis
11
2019 Western Province League (Premier)
2019/07/27
2019/09/07
Cape Town (WCT)
Standard
120
1.00
11
10
2.0
1635.7
1622.7
Analysis
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
24
12
2
10
13.0
54.2
35.4
1649.1
1684.5
White
14
7
1
6
7.5
53.6
30.4
1664.5
1694.9
Black
10
5
1
4
5.5
55.0
42.5
1627.5
1670.0
Standard
All
24
12
2
10
13.0
54.2
35.4
1649.1
1684.5
White
14
7
1
6
7.5
53.6
30.4
1664.5
1694.9
Black
10
5
1
4
5.5
55.0
42.5
1627.5
1670.0
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
212
82
31
99
97.5
46.0
-34.1
1659.9
1625.8
White
113
42
17
54
50.5
44.7
-45.1
1660.3
1615.2
Black
99
40
14
45
47.0
47.5
-21.5
1659.5
1638.0
Standard
All
205
78
31
96
93.5
45.6
-37.3
1659.3
1622.0
White
110
40
17
53
48.5
44.1
-50.2
1664.6
1614.4
Black
95
38
14
43
45.0
47.4
-22.4
1653.1
1630.8
Rapid
All
7
4
0
3
4.0
57.1
60.7
1678.7
1739.4
White
3
2
0
1
2.0
66.7
141.7
1504.2
1645.9
Black
4
2
0
2
2.0
50.0
0.0
1809.5
1809.5
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
153010181
Galleid, S (Stephen)
6
2.5
2
1
3
41.7
1613.2
-70.8
1542.4
View list
2
147035755
Southey, AM (Andrew)
5
2.0
2
0
3
40.0
1604.9
-85.0
1519.9
View list
3
163002189
Bhawoodien, SH (Shabier)
4
2.0
2
0
2
50.0
1638.1
0.0
1638.1
View list
4
161042919
Willenberg, RC (Roland)
4
2.0
1
2
1
50.0
1594.7
0.0
1594.7
View list
5
1050106200
Braaf, J (Jiraan)
4
1.0
1
0
3
25.0
1630.2
-212.5
1417.7
View list
6
162017968
Lewis, MMM (Mark)
4
1.0
1
0
3
25.0
1624.9
-212.5
1412.4
View list
7
100006449
De Jager, LJ (Luan)
4
0.5
0
1
3
12.5
1645.8
-318.8
1327.0
View list
8
105090611
Mnyasta, T (Tezihano)
3
2.5
2
1
0
83.3
1643.8
283.3
1927.1
View list
9
164009064
Esau, O (Omar)
3
2.0
2
0
1
66.7
1632.2
141.7
1773.8
View list
10
164037225
Talmarkes, AG (Andrew)
3
2.0
2
0
1
66.7
1599.7
141.7
1741.4
View list
11
168040472
Van Schaik, MP (Michael)
3
2.0
1
2
0
66.7
1621.8
141.7
1763.4
View list
12
162042913
Willenberg, GI (Glen)
2
2.0
2
0
0
100.0
1597.2
425.0
2022.2
View list
13
102053666
Blows, KT (Kian)
2
1.5
1
1
0
75.0
1613.6
212.5
1826.1
View list
14
159034766
Sinden, RJ (Reginald)
2
1.5
1
1
0
75.0
1618.4
212.5
1830.9
View list
15
100040966
Van Zyl, A (Albrecht)
2
1.5
1
1
0
75.0
1624.4
212.5
1836.9
View list
16
101005854
Cuthbert, M (Michael)
2
1.0
1
0
1
50.0
1634.9
0.0
1634.9
View list
17
108072311
Karsten, JD (Jan)
2
1.0
1
0
1
50.0
1679.9
0.0
1679.9
View list
18
1060108791
Masoka, L (Lwando)
2
1.0
1
0
1
50.0
1593.4
0.0
1593.4
View list
19
164028262
November, EJ (Edwin)
2
1.0
1
0
1
50.0
1591.8
0.0
1591.8
View list
20
103029456
Paterson, J (Jonny)
2
1.0
1
0
1
50.0
1616.5
0.0
1616.5
View list