Chess South Africa
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Chess South Africa
Posthumus, J (Jan)
Dob:
1995/07/23 (Adult)
Gender:
Male
Chess SA id:
1950147710
FIDE id:
Region:
Cape Town (WCT)
Citizen:
RSA
Title(s):
Last active:
2022/12/18 (520 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
1164.0
Curent Weighted rating
1166.4
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1166.4
Current floor (min rating allowed)
693.3
Current highest rating achieved
1193.3
Current K-factor
40
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)
±174.5
Current Raw change used (final)
0.0
Projected new Raw rating
1164.0
Projected new Weighed rating
1165.7
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1165.7
Projected effective change (new Official - current Official)
-0.7
Projected new highest rating
1193.3
Projected new floor
693.3
Projected new K-facor
40
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
1194.8
Curent Weighted rating
1195.2
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1195.2
Current floor (min rating allowed)
694.8
Current highest rating achieved
1194.8
Current K-factor
40
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)
±167.0
Current Raw change used (final)
0.0
Projected new Raw rating
1194.8
Projected new Weighed rating
1195.1
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1195.1
Projected effective change (new Official - current Official)
-0.1
Projected new highest rating
1194.8
Projected new floor
694.8
Projected new K-facor
40
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
1096.4
Curent Weighted rating
1102.6
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1102.6
Current floor (min rating allowed)
648.4
Current highest rating achieved
1148.4
Current K-factor
40
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)
±192.2
Current Raw change used (final)
0.0
Projected new Raw rating
1096.4
Projected new Weighed rating
1100.7
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1100.7
Projected effective change (new Official - current Official)
-1.9
Projected new highest rating
1148.4
Projected new floor
648.4
Projected new K-facor
40
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
1300.0
Curent Weighted rating
1236.7
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1300.0
Current floor (min rating allowed)
648.4
Current highest rating achieved
1300.0
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)
±143.8
Current Raw change used (final)
0.0
Projected new Raw rating
1300.0
Projected new Weighed rating
1243.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1300.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1300.0
Projected new floor
648.4
Projected new K-facor
36
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
3
Kraaifontein Open 2022 (Intermediate)
2022/12/17
2022/12/18
Cape Town (WCT)
Standard
70
0.87
6
3
1.0
1193.3
1200.0
Analysis
2
Kraaifontein Rapid Open 2022 (Open)
2022/12/16
2022/12/16
Cape Town (WCT)
Rapid
30
0.60
6
5
1.0
1193.3
1148.4
Analysis
1
Kenridge Rapid 2022 (B)
2022/11/05
2022/11/05
Cape Town (WCT)
Rapid
25
0.54
6
5
2.0
1200.0
1200.0
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
13
4
0
9
4.0
30.8
-163.5
1258.8
1095.3
White
7
2
0
5
2.0
28.6
-182.1
1297.3
1115.1
Black
6
2
0
4
2.0
33.3
-141.7
1213.9
1072.3
Standard
All
3
1
0
2
1.0
33.3
-141.7
1374.2
1232.5
White
2
0
0
2
0.0
0.0
-425.0
1424.1
999.1
Black
1
1
0
0
1.0
100.0
425.0
1274.4
1699.4
Rapid
All
10
3
0
7
3.0
30.0
-170.0
1224.2
1054.2
White
5
2
0
3
2.0
40.0
-85.0
1246.6
1161.6
Black
5
1
0
4
1.0
20.0
-255.0
1201.8
946.8
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
1060097568
Mizen, D (Daniel)
2
0.0
0
0
2
0.0
1196.7
-425.0
771.7
View list
2
1110140733
Ngidi, N (Ndumiso)
1
1.0
1
0
0
100.0
1193.3
425.0
1618.3
View list
3
1070148244
Brink, K (Kiran)
1
1.0
1
0
0
100.0
1193.3
425.0
1618.3
View list
4
2030107204
Osborne, N (Nicole)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
5
1080119841
Strydom, B (Barry)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
6
1050148246
Van Staden, J (Julian)
1
0.0
0
0
1
0.0
1193.3
-425.0
768.3
View list
7
1150137343
Stern, M (Mason)
1
0.0
0
0
1
0.0
1193.3
-425.0
768.3
View list
8
211087036
Osborne, H (Hannah)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
9
1070138643
Louw, J (Jean-Francois)
1
0.0
0
0
1
0.0
1193.3
-425.0
768.3
View list
10
107064487
Lee, MJ (Muhammad)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
11
2070148245
Hayward, C (Catherine)
1
0.0
0
0
1
0.0
1193.3
-425.0
768.3
View list
12
1120140113
Guo, A (Aleks)
1
0.0
0
0
1
0.0
1193.3
-425.0
768.3
View list