Player Page

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: 2024/04/20 (28 days ago)
Ratings
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 rating1623.7
Curent Weighted rating1592.7
Curent Weighted performance1589.5
Current official/published rating (highest between Raw, WR and WP)1623.7
Current floor (min rating allowed)1191.1
Current highest rating achieved1691.1
Current K-factor28
Games played this month0
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)±90.7
Current Raw change used (final)0.0
Projected new Raw rating1623.7
Projected new Weighed rating1595.1
Projected new Weighted performance1589.5
Projected new official/published rating (highest between new Raw, new WR and new WP)1623.7
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1691.1
Projected new floor1191.1
Projected new K-facor28
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 rating1640.8
Curent Weighted rating1598.7
Curent Weighted performance1599.2
Current official/published rating (highest between Raw, WR and WP)1640.8
Current floor (min rating allowed)1186.7
Current highest rating achieved1686.7
Current K-factor28
Games played this month0
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)±88.5
Current Raw change used (final)0.0
Projected new Raw rating1640.8
Projected new Weighed rating1602.2
Projected new Weighted performance1599.2
Projected new official/published rating (highest between new Raw, new WR and new WP)1640.8
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1686.7
Projected new floor1186.7
Projected new K-facor28
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 rating1622.6
Curent Weighted rating1653.3
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1653.3
Current floor (min rating allowed)1168.2
Current highest rating achieved1668.2
Current K-factor28
Games played this month0
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)±90.8
Current Raw change used (final)0.0
Projected new Raw rating1622.6
Projected new Weighed rating1651.0
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1651.0
Projected effective change (new Official - current Official)-2.4
Projected new highest rating1668.2
Projected new floor1168.2
Projected new K-facor28
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 rating1615.6
Curent Weighted rating1615.6
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1615.6
Current floor (min rating allowed)1168.2
Current highest rating achieved1615.6
Current K-factor28
Games played this month0
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 rating1615.6
Projected new Weighed rating1615.6
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 rating1615.6
Projected new floor1168.2
Projected new K-facor28
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
4 Hermanus Chess Club Open 2024 (Advanced) 2024/04/20 2024/04/20 Overberg (WOS) Rapid 20 0.47 7 7 4.0 1646.6 1668.2 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
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
31 Hermanus Chess Club Open 2024 (Advanced) 2024/04/20 2024/04/20 Overberg (WOS) Rapid 20 0.47 7 7 4.0 1646.6 1668.2 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
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 31 16 2 13 17.0 54.8 41.1 1624.1 1665.2
White 18 8 1 9 8.5 47.2 -23.6 1640.3 1616.6
Black 13 8 1 4 8.5 65.4 130.8 1601.6 1732.4
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 7 4 0 3 4.0 57.1 60.7 1538.2 1599.0
White 4 1 0 3 1.0 25.0 -212.5 1555.4 1342.9
Black 3 3 0 0 3.0 100.0 425.0 1515.4 1940.4
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 219 86 31 102 101.5 46.3 -31.1 1656.0 1625.0
White 117 43 17 57 51.5 44.0 -50.9 1656.7 1605.9
Black 102 43 14 45 50.0 49.0 -8.3 1655.2 1646.9
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 14 8 0 6 8.0 57.1 60.7 1608.5 1669.2
White 7 3 0 4 3.0 42.9 -60.7 1533.5 1472.7
Black 7 5 0 2 5.0 71.4 182.1 1683.4 1865.6
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 idNameGamesScoreWinsDrawsLosses%AorDpPerformView
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